1
|
Liu X, Gao J, Liu J, Cheng J, Han Z, Li Z, Chang Z, Zhang L, Li M, Tang P. Three-Dimensional-Printed Spherical Hollow Structural Scaffolds for Guiding Critical-Sized Bone Regeneration. ACS Biomater Sci Eng 2024; 10:2581-2594. [PMID: 38489227 DOI: 10.1021/acsbiomaterials.3c01956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
The treatment of bone tissue defects continues to be a complex medical issue. Recently, three-dimensional (3D)-printed scaffold technology for bone tissue engineering (BTE) has emerged as an important therapeutic approach for bone defect repair. Despite the potential of BTE scaffolds to contribute to long-term bone reconstruction, there are certain challenges associated with it including the impediment of bone growth within the scaffolds and vascular infiltration. These difficulties can be resolved by using scaffold structural modification strategies that can effectively guide bone regeneration. This study involved the preparation of biphasic calcium phosphate spherical hollow structural scaffolds (SHSS) with varying pore sizes using 3D printing (photopolymerized via digital light processing). The chemical compositions, microscopic morphologies, mechanical properties, biocompatibilities, osteogenic properties, and impact on repairing critical-sized bone defects of SHSS were assessed through characterization analyses, in vitro cytological assays, and in vivo biological experiments. The results revealed the biomimetic properties of SHSS and their favorable biocompatibility. The scaffolds stimulated cell adhesion, proliferation, differentiation, and migration and facilitated the expression of osteogenic genes and proteins, including Col-1, OCN, and OPN. Furthermore, they could effectively repair a critical-sized bone defect in a rabbit femoral condyle by establishing an osteogenic platform and guiding bone regeneration in the defect region. This innovative strategy presents a novel therapeutic approach for assessing critical-sized bone defects.
Collapse
Affiliation(s)
- Xiao Liu
- Medical School of Chinese PLA, Beijing 100853, China
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Jianpeng Gao
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Jianheng Liu
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Junyao Cheng
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Zhenchuan Han
- Medical School of Chinese PLA, Beijing 100853, China
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Zijian Li
- Medical School of Chinese PLA, Beijing 100853, China
| | | | - Licheng Zhang
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Ming Li
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Peifu Tang
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| |
Collapse
|
2
|
Kakimoto H, Fujii T, Tomita H. Repair of iatrogenic left pulmonary artery to left atrial appendage fistula using a covered CP stent: a case report. Cardiol Young 2024; 34:922-923. [PMID: 38247373 DOI: 10.1017/s1047951123004481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
We report a case of iatrogenic left pulmonary artery-left atrial appendage fistula following percutaneous transluminal angioplasty for residual pulmonary artery stenosis in an 11-year-old boy. This rare complication could have been predicted by understanding the anatomical relationship of these structures. In this study, simulation using three-dimensional printing greatly contributed to successful stent placement.
Collapse
Affiliation(s)
- Hisako Kakimoto
- Pediatric Heart Disease and Adult Congenital Heart Disease Center, Showa University Hospital, Shinagawa-ku, Tokyo, Japan
| | - Takanari Fujii
- Pediatric Heart Disease and Adult Congenital Heart Disease Center, Showa University Hospital, Shinagawa-ku, Tokyo, Japan
| | - Hideshi Tomita
- Pediatric Heart Disease and Adult Congenital Heart Disease Center, Showa University Hospital, Shinagawa-ku, Tokyo, Japan
| |
Collapse
|
3
|
Rathee M, Chahal S, Jain P, Alam M, Divakar S, Singh S. Rehabilitation Using Hybrid Technique for Feeding Plate Fabrication in a 3-Month-Old Infant with Cleft Palate Defect Utilising Digital and Conventional Method: A Case Report. Afr J Paediatr Surg 2024; 21:144-147. [PMID: 38546255 PMCID: PMC11003572 DOI: 10.4103/ajps.ajps_143_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 01/09/2023] [Indexed: 04/04/2024] Open
Abstract
ABSTRACT Cleft palate leads to difficulty in suckling, speech abnormalities, dental problems, hearing loss and middle ear infections. Feeding plate acts as a barrier between the oral and nasal cavities allowing the normal development of jaws and enhanced nutritional supply to the patient. Fabrication of the feeding plate using digital means provide better adaptability due to the engagement of all the possible favourable anatomic undercuts, thereby, providing better retention. This case report discusses the hybrid technique including both the digital and conventional means for fabrication of a feeding plate to obturate the defect between the oral and nasal cavity.
Collapse
Affiliation(s)
- Manu Rathee
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Sujata Chahal
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Prachi Jain
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Maqbul Alam
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - S Divakar
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Sandeep Singh
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| |
Collapse
|
4
|
Díaz-Regañón D, Mendaza-De Cal R, García-Sancho M, Rodríguez-Franco F, Sainz Á, Rodriguez-Quiros J, Rojo C. Canine Upper Digestive Tract 3D Model: Assessing Its Utility for Anatomy and Upper Endoscopy Learning. Animals (Basel) 2024; 14:1070. [PMID: 38612309 PMCID: PMC11010944 DOI: 10.3390/ani14071070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
A teaching strategy using 3D-printed models of the canine upper digestive tract (UDT) for anatomy demonstration and upper endoscopy instruction was evaluated. The canine UDT (esophagus-stomach-duodenum) was scanned and 3D-printed molds were manufactured using silicone casting. First-year students were introduced to these 3D models in practical sessions alongside real specimens. Simultaneously, fifth-year students were trained in endoscope handling and anatomical recognition using 3D specimens. Both groups completed an anonymous survey. Results showed that overall, first-year (n = 93) and fifth-year (n = 45) students agreed or strongly agreed that the 3D-printed model was effective for learning purposes. In summary, first-year students highlighted an improved understanding of size, volume, topography, and easier manipulation of the 3D model compared to fresh specimens. Fifth-year students were more enthusiastic, finding the 3D model valuable for spatial vision and clinical training. While both groups were against completely replacing the natural UDT with the 3D model, first-year students were more hesitant. These findings suggest that the 3D model of the canine UDT is an effective tool for hands-on training in clinical endoscopy and a valuable, albeit complementary, resource for teaching anatomy and topography.
Collapse
Affiliation(s)
- David Díaz-Regañón
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain; (M.G.-S.); (F.R.-F.); (Á.S.); (J.R.-Q.)
| | - Rosa Mendaza-De Cal
- Departmental Section of Anatomy and Embryology, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain;
| | - Mercedes García-Sancho
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain; (M.G.-S.); (F.R.-F.); (Á.S.); (J.R.-Q.)
| | - Fernando Rodríguez-Franco
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain; (M.G.-S.); (F.R.-F.); (Á.S.); (J.R.-Q.)
| | - Ángel Sainz
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain; (M.G.-S.); (F.R.-F.); (Á.S.); (J.R.-Q.)
| | - Jesus Rodriguez-Quiros
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain; (M.G.-S.); (F.R.-F.); (Á.S.); (J.R.-Q.)
| | - Concepción Rojo
- Departmental Section of Anatomy and Embryology, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro s/n, 28040 Madrid, Spain;
| |
Collapse
|
5
|
Hessel E, Ghanta P, Winschel T, Melnyk L, Oyewumi MO. Fabrication of 3D-printed scaffolds loaded with gallium acetylacetonate for potential application in osteoclastic bone resorption. Pharm Dev Technol 2024:1-14. [PMID: 38502579 DOI: 10.1080/10837450.2024.2332459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 03/15/2024] [Indexed: 03/21/2024]
Abstract
We recently reported the potential of a new gallium compound, gallium acetylacetonate (GaAcAc) in combating osteoclastic bone resorption through inhibition of osteoclast differentiation and function. Herein, we focused on 3D-printed polylactic acid scaffolds that were loaded with GaAcAc and investigated the impact of scaffold pretreatment with polydopamine (PDA) or sodium hydroxide (NaOH). We observed a remarkable increase in scaffold hydrophilicity with PDA or NaOH pretreatment while biocompatibility and in vitro degradation were not affected. NaOH-pretreated scaffolds showed the highest amount of GaAcAc loading when compared to other scaffolds (p < 0.05). NaOH-pretreated scaffolds with GaAcAc loading showed effective reduction of osteoclast counts and size. The trend was supported by suppression of key osteoclast differentiation markers such as NFAT2, c-Fos, TRAF6, & TRAP. All GaAcAc-loaded scaffolds, regardless of surface pretreatment, were effective in inhibiting osteoclast function as evidenced by reduction in the number of resorptive pits in bovine cortical bone slices (p < 0.01). The suppression of osteoclast function according to the type of scaffold followed the ranking: GaAcAc loading without surface pretreatment > GaAcAc loading with NaOH pretreatment > GaAcAc loading with PDA pretreatment. Additional studies will be needed to fully elucidate the impact of surface pretreatment on the efficacy and safety of GaAcAc-loaded 3D-printed scaffolds.
Collapse
Affiliation(s)
- Evin Hessel
- Advanced Drug Delivery Laboratory, Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, OH, USA
| | - Pratyusha Ghanta
- Advanced Drug Delivery Laboratory, Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, OH, USA
- School of Biomedical Sciences, Kent State University, Kent, OH, USA
| | - Timothy Winschel
- Advanced Drug Delivery Laboratory, Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, OH, USA
| | - Larissa Melnyk
- Advanced Drug Delivery Laboratory, Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, OH, USA
| | - Moses O Oyewumi
- Advanced Drug Delivery Laboratory, Department of Pharmaceutical Sciences, College of Pharmacy, Northeast Ohio Medical University, Rootstown, OH, USA
| |
Collapse
|
6
|
曾 辉, 郭 芳, 黄 硕, 刘 宁, 郭 亚, 刘 昌. [Study on NaOH improving the surface morphology of three-dimensional printed poly- L- lactic acid mesh scaffolds]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2024; 38:348-355. [PMID: 38500430 PMCID: PMC10982027 DOI: 10.7507/1002-1892.202311089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/07/2024] [Accepted: 02/07/2024] [Indexed: 03/20/2024]
Abstract
Objective To explore the effect of NaOH on the surface morphology of three-dimensional (3D) printed poly- L-lactic acid (PLLA) mesh scaffolds. Methods The 3D printed PLLA mesh scaffolds were prepared by fused deposition molding technology, then the scaffold surfaces were etched with the NaOH solution. The concentrations of NaOH solution were 0.01, 0.1, 0.5, 1.0, and 3.0 mol/L, and the treatment time was 1, 3, 6, 9, and 12 hours, respectively. There were a total of 25 concentration and time combinations. After treatment, the microstructure, energy spectrum, roughness, hydrophilicity, compressive strength, as well as cell adhesion and proliferation of the scaffolds were observed. The untreated scaffolds were used as a normal control. Results 3D printed PLLA mesh scaffolds were successfully prepared by using fused deposition molding technology. After NaOH etching treatment, a rough or micro porous structure was constructed on the surface of the scaffold, and with the increase of NaOH concentration and treatment time, the size and density of the pores increased. The characterization of the scaffolds by energy dispersive spectroscopy showed that the crystal contains two elements, Na and O. The surface roughness of NaOH treated scaffolds significantly increased ( P<0.05) and the contact angle significantly decreased ( P<0.05) compared to untreated scaffolds. There was no significant difference in compressive strength between the untreated scaffolds and treated scaffolds under conditions of 0.1 mol/L/12 h and 1.0 mol/L/3 h ( P>0.05), while the compression strength of the other treated scaffolds were significantly lower than that of the untreated scaffolds ( P<0.05). After co-culturing the cells with the scaffold, NaOH treatment resulted in an increase in the number of cells on the surface of the scaffold and the spreading area of individual cells, and more synapses extending from adherent cells. Conclusion NaOH treatment is beneficial for increasing the surface hydrophilicity and cell adhesion of 3D printed PLLA mesh scaffolds.
Collapse
Affiliation(s)
- 辉 曾
- 西安医学院口腔医学院牙颌面组织再生与修复研究中心(西安 710021)Research Center of Tooth and Maxillofacial Tissue Regeneration and Restoration, School of Stomatology, Xi’an Medical University, Xi’an Shaanxi, 710021, P. R. China
| | - 芳 郭
- 西安医学院口腔医学院牙颌面组织再生与修复研究中心(西安 710021)Research Center of Tooth and Maxillofacial Tissue Regeneration and Restoration, School of Stomatology, Xi’an Medical University, Xi’an Shaanxi, 710021, P. R. China
| | - 硕 黄
- 西安医学院口腔医学院牙颌面组织再生与修复研究中心(西安 710021)Research Center of Tooth and Maxillofacial Tissue Regeneration and Restoration, School of Stomatology, Xi’an Medical University, Xi’an Shaanxi, 710021, P. R. China
| | - 宁 刘
- 西安医学院口腔医学院牙颌面组织再生与修复研究中心(西安 710021)Research Center of Tooth and Maxillofacial Tissue Regeneration and Restoration, School of Stomatology, Xi’an Medical University, Xi’an Shaanxi, 710021, P. R. China
| | - 亚媛 郭
- 西安医学院口腔医学院牙颌面组织再生与修复研究中心(西安 710021)Research Center of Tooth and Maxillofacial Tissue Regeneration and Restoration, School of Stomatology, Xi’an Medical University, Xi’an Shaanxi, 710021, P. R. China
| | - 昌奎 刘
- 西安医学院口腔医学院牙颌面组织再生与修复研究中心(西安 710021)Research Center of Tooth and Maxillofacial Tissue Regeneration and Restoration, School of Stomatology, Xi’an Medical University, Xi’an Shaanxi, 710021, P. R. China
| |
Collapse
|
7
|
Giorgi J, Barbagelata A, Luoma-Overstreet G, Kaplinsky E, Jorge SDC, Scanavacca M, Scordamaglio PR, Mentz RJ. 3D Printing for Left Ventricular Assist Device Exchange: Insights From Real-World Experience. JACC Case Rep 2024; 29:102194. [PMID: 38464795 PMCID: PMC10920099 DOI: 10.1016/j.jaccas.2023.102194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/13/2023] [Accepted: 11/22/2023] [Indexed: 03/12/2024]
Abstract
Left ventricular assist devices (LVADs) are used in end-stage heart failure. Inadequate positioning of the inflow cannula may necessitate replacement of the LVAD. We present the successful use of a three-dimensional printed model used to optimize surgical planning and allow for simulation and training for the LVAD exchange procedure.
Collapse
Affiliation(s)
- Juliana Giorgi
- Sírio Libanês Hospital, São Paulo, Brazil
- Albert Einstein Hospital, São Paulo, Brazil
| | - Alejandro Barbagelata
- Universidad Catolica Argentina, Buenos Aires, Argentina
- Duke University, Durham, North Carolina, USA
| | | | - Edgardo Kaplinsky
- Barcelona University, Badalona Municipal Hospital, Badalona, Barcelona, Spain
| | - Sergio do Carmo Jorge
- Sírio Libanês Hospital, São Paulo, Brazil
- Albert Einstein Hospital, São Paulo, Brazil
| | - Mauricio Scanavacca
- Sírio Libanês Hospital, São Paulo, Brazil
- Albert Einstein Hospital, São Paulo, Brazil
- Instituto do Coração do Hospital das Clínicas, University of São Paulo, São Paulo, Brazil
| | | | | |
Collapse
|
8
|
Lim B, Kim D, Song JS, Kim S, Kim H, Shin Y. Influence of Post-Curing in Nitrogen-Saturated Condition on the Degree of Conversion and Color Stability of 3D-Printed Resin Crowns. Dent J (Basel) 2024; 12:68. [PMID: 38534292 DOI: 10.3390/dj12030068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/19/2024] [Accepted: 03/04/2024] [Indexed: 03/28/2024] Open
Abstract
Post-curing is the process of applying extra light to complete the polymerization process of 3D printing. The mechanical properties of light-cured three-dimensional (3D) printed resin can be improved by decreasing the oxygen concentrations during post-curing, and nitrogen-saturated post-curing has been applied for this purpose. This study aimed to evaluate and compare the color stability of 3D-printed resin crowns that were post-cured in both normal air and nitrogen-saturated conditions. Crowns were fabricated with a 3D printer and post-cured in normal air (control group; air) or nitrogen-saturated conditions (experimental group; nitrogen). The specimens in each group were subdivided into four subgroups, each exposed to different discoloration agents: distilled water, coffee, wine, and curry. Post-immersion color changes were measured using a digital spectrophotometer and analyzed using repeated-measures ANOVA. Fourier transform infrared (FT-IR) spectroscopy evaluated the degree of conversion of resin over immersion times for both post-curing conditions. Upon comparing the effects of post-curing conditions, a significant difference between the control and experimental groups in terms of immersion time in the wine and curry subgroups was found. FT-IR analysis showed a significant difference in the degree of conversion between the air and nitrogen groups from 10 to 300 s. These findings suggest that nitrogen-saturated post-curing can potentially enhance the conversion rate of 3D-printed resin crowns, thereby improving their color stability.
Collapse
Affiliation(s)
- Bohyun Lim
- Department of Conservative Dentistry, College of Dentistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Dohyun Kim
- Department of Conservative Dentistry, College of Dentistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Je Seon Song
- Department of Pediatric Dentistry, College of Dentistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Sunil Kim
- Department of Conservative Dentistry, College of Dentistry, Yonsei University, Seoul 03722, Republic of Korea
| | - Hoon Kim
- Research Institute of Agriculture and Life Sciences, College of Agriculture & Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Yooseok Shin
- Department of Conservative Dentistry, College of Dentistry, Yonsei University, Seoul 03722, Republic of Korea
| |
Collapse
|
9
|
Abstract
STUDY DESIGN Systematic Review. OBJECTIVE 3DP technology use has become increasingly more common in the field of medicine and is notable for its growing utility in spine surgery applications. Many studies have evaluated the use of pedicle screw placement guides and spine models in adult spine patients, but there is little evidence assessing its efficacy in pediatric spine patient populations. This systematic review identifies and evaluates the current applications and surgical outcomes of 3-Dimensional Printing (3DP) technology in pediatric spinal surgery. METHODS A search of publications was conducted using literature databases and relevant keywords in concordance with PRISMA guidelines. Inclusion criteria consisted of original studies, and studies focusing on the use of 3DP technology in pediatric spinal surgery. Studies with a focus on adult populations, non-deformity surgery, animal subjects, systematic or literature reviews, editorials, or non-English studies were excluded from further analysis. RESULTS After application of inclusion/exclusion criteria, we identified 25 studies with 3DP applications in pediatric spinal surgery. Overall, the studies found significantly improved screw placement accuracy using 3DP pedicle screw placement guides but did not identify significant differences in operative time or blood loss. All studies that utilized 3D spine models in preoperative planning found it helpful and noted an increased screw placement accuracy rate of 89.9%. CONCLUSIONS 3DP applications and techniques are currently used in pre-operative planning using pedicle screw drill guides and spine models to improve patient outcomes in pediatric spinal deformity patients.
Collapse
Affiliation(s)
- Prerana Katiyar
- Columbia UniversityVagelos College of Physicians and Surgeons, New York, NY, USA
| | | | | | - Benjamin Roye
- Columbia UniversityIrving Medical Center, New York, NY, USA
| | - Michael Vitale
- Columbia UniversityIrving Medical Center, New York, NY, USA
| | - Lawrence Lenke
- Columbia UniversityIrving Medical Center, New York, NY, USA
- Och Spine Hospital at Columbia New York Presbyterian Hospital, New York, NY, USA
| |
Collapse
|
10
|
Alshaibani RM, Fan Y, Giordano R. Effect of different storage conditions on dimensional accuracy of 3D-printed dental models. J Prosthodont 2024. [PMID: 38409924 DOI: 10.1111/jopr.13834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 02/09/2024] [Indexed: 02/28/2024] Open
Abstract
PURPOSE The objective was to determine the accuracy of 3D-printed dental models subjected to different storage conditions using six different material and printer combinations. MATERIALS AND METHODS Three completely dentate models were designed using dental CAD software (3Shape Dental System). A horseshoe-shaped solid base with a posterior horizontal bar was used. The models were printed in a horizontal direction against the building platform without support. The models were printed using six printers with the corresponding recommended resin material: Carbon M2 (DPR10), HeyGears A2D4K (Model HP UV2.0), Stratasys J5 (MED610), Stratasys Origin One (DM200), Envision One (E-Model LightDLP), and Asiga Pro4K (VeriModel) with a standard layer thickness of 50 μm. All printed models underwent scanning using a laboratory scanner (Sirona inEOS X5) after printing. Subsequently, the models were randomly assigned into three groups of storage conditions, LT: cold environment (4 ± 1°C), HT: hot and dry environment (50 ± 2°C), and RT: room temperature (25 ± 2°C) serving as the control. Each group was kept under the designated condition and was scanned at 1, 2, 3, 4, and 8 weeks. The total number of models (N) was 72, with 6 printers producing 12 models per printer for 3 storage conditions, resulting in 4 models for each storage condition and each printer. The generated STL files were imported into a 3D inspection software for comparison with the original STL files. In-tolerance percentage, the deviation RMS, trueness, and precision were obtained and analyzed with least square mean linear regression using JMP Pro 15 to identify the significant effects (α = 0.05). RESULTS The in-tolerance percentage as-printed was significantly different among different printers. Significant dimension deviations were observed after the first week of storage at HT and with subsequent weeks of storage. RT and LT did not show significant dimensional changes. Models printed with Carbon M2 showed the highest in-tolerance percentages compared to the other printers. CONCLUSIONS The model deviations were affected by storage conditions and the printer used, with high-temperature storage showed least stability compared to low and room temperatures. No significant difference was observed between low and room temperature storage conditions. The Carbon M2 printer showed the highest accuracy among all printers tested. The region had a significant effect on the deviation measured, with the abutment body showing the least deviation. Among the 3D printers evaluated, A2D4K by HeyGears and Carbon M2 printers demonstrated the highest accuracy in terms of both precision and trueness.
Collapse
Affiliation(s)
- Raghdah M Alshaibani
- Department of Restorative Sciences & Biomaterials, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts, USA
- Department of Clinical Dental Sciences, Princess Nourah Bint Abdul Rahman University, Riyadh, Saudi Arabia
| | - Yuwei Fan
- Department of Restorative Sciences & Biomaterials, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts, USA
| | - Russell Giordano
- Department of Restorative Sciences & Biomaterials, Boston University Henry M. Goldman School of Dental Medicine, Boston, Massachusetts, USA
| |
Collapse
|
11
|
Lee PH, Lim MJ, Eun SD. A study on the four-phase design and development process of 3D printed foot-operated safety nail clipper for people with stroke hemiplegia. Disabil Rehabil Assist Technol 2024:1-11. [PMID: 38375803 DOI: 10.1080/17483107.2024.2312191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 01/19/2024] [Indexed: 02/21/2024]
Abstract
PURPOSE Cutting nails is an essential activity of daily living. In this study, a foot-operated safety nail clipper for people with stroke hemiplegia was developed in four phases using three-dimensional (3D) printing technology. MATERIALS AND METHODS A user was identified to develop a foot-operated, safe nail clipper for people with stroke hemiplegia (Phase 1). A single user repeatedly used the technology to determine necessary improvements (Phase 2). Then, the usability was evaluated by four people with disabilities (Phase 3) before the clipper was manufactured at multiple institutions to determine its reproducibility (Phase 4). RESULTS The foot-operated safe nail clipper was upgraded during each phase. The Version 2.0 comprises twenty 3D printing materials and five readily-available materials. CONCLUSIONS A foot-operated safety nail clipper was developed for people with stroke hemiplegia. The number of parts increased as the device was upgraded via the use of 3D printing and available materials. Based on a small-scale usability test, the device was best suited for people with stroke hemiplegia. The assistive device was shared with the assistive technology open platform as an open source. The four-phased process can be used to develop appropriate assistive technology devices through the Makers Movement in the future.
Collapse
Affiliation(s)
- Pyeong Ho Lee
- Assistive Technology Research Team for Independent Living, National Rehabilitation Centre, Seoul, South Korea
| | - Myung-Joon Lim
- Assistive Technology Research Team for Independent Living, National Rehabilitation Centre, Seoul, South Korea
| | - Seon Deok Eun
- Assistive Technology Research Team for Independent Living, National Rehabilitation Centre, Seoul, South Korea
| |
Collapse
|
12
|
Bonvini S, Raunig I, Demi L, Spadoni N, Tasselli S. Unsuspected Limitations of 3D Printed Model in Planning of Complex Aortic Aneurysm Endovascular Treatment. Vasc Endovascular Surg 2024:15385744241232186. [PMID: 38335135 DOI: 10.1177/15385744241232186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2024]
Abstract
OBJECTIVE Static 3-dimensional (3D) printing became attractive for operative planning in cases that involve difficult anatomy. An interactive (low cost, fast) 3D print allowing deliberate surgical practice can be used to improve interventional simulation and planning. BACKGROUND Endovascular treatment of complex aortic aneurysms is technically challenging, especially in case of narrow aortic lumen or significant aortic angulation (hostile anatomy). The risk of complications such as graft kinking and target vessel occlusion is difficult to assess based solely on traditional software measuring methods and remain highly dependent on surgeon skills and expertise. METHODS A patient with juxtarenal AAA with hostile anatomy had a 3-dimensional printed model constructed preoperatively according to computed tomography images. Endovascular graft implantation in the 3D printed aorta with a standard T-Branch Cook (Cook® Medical, Bloomington, IN, USA) was performed preoperatively in the simulation laboratory enabling optimized feasibility, surgical planning and intraoperative decision making. RESULTS The 3D printed aortic model proved to be radio-opaque and allowed simulation of branched endovascular aortic repair (BREVAR). The assessment of intervention feasibility, as well as optimal branch position and orientation was found to be useful for surgeon confidence and the actual intervention in the patient. There was a remarkable agreement between the 3D printed model and both CT and X-ray angiographic images. Although the technical success was achieved as planned, a previously deployed renal stent caused unexpected difficulty in advancing the renal stent, which was not observed in the 3D model simulation. CONCLUSION The 3D printed aortic models can be useful for determining feasibility, optimizing planning and intraoperative decision making in hostile anatomy improving the outcome. Despite already offering satisfying accuracy at present, further advancements could enhance the 3D model capability to replicate minor anatomical deformities and variations in tissue density.
Collapse
Affiliation(s)
- Stefano Bonvini
- Department of Vascular Surgery, Santa Chiara Hospital, Trento, Italy
| | - Igor Raunig
- Department of Vascular Surgery, Santa Chiara Hospital, Trento, Italy
| | - Libertario Demi
- Department of Information Engineering and Computer Science, University of Trento, Trento, Italy
| | - Nicola Spadoni
- Department of Vascular Surgery, Santa Chiara Hospital, Trento, Italy
| | | |
Collapse
|
13
|
Coelho SRG, da Silva MDD, Nunes TSBS, Viotto HEC, Marin DOM, Pero AC. Effect of immersion in disinfectants on the color stability of denture base resins and artificial teeth obtained by 3D printing. J Prosthodont 2024; 33:157-163. [PMID: 36740784 DOI: 10.1111/jopr.13663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 01/27/2023] [Indexed: 02/07/2023] Open
Abstract
PURPOSE To evaluate the effect of immersion in disinfecting solutions on the color stability of denture base resins and artificial teeth obtained by 3D printing. MATERIALS AND METHODS Forty discs (15 × 3 mm) were obtained for each group: Lucitone 550 and Cosmos Denture 3D (denture base resins), Duralay and Cosmos TEMP 3D (artificial teeth resins). The discs were immersed in disinfectant solutions: Corega Tabs, 2% chlorhexidine digluconate, 0.25% sodium hypochlorite, and distilled water. Color measurements were obtained with a spectrophotometer before immersion in disinfectants and after the simulated periods of 6 and 12 months. Data (ΔE00 ) were submitted to mixed three-way ANOVA and Bonferroni post-test. RESULTS For denture base resins, Cosmos Denture 3D showed greater color change regardless of the solution and immersion time. The immersion time of 6 months influenced the color change of the denture base resins regardless of the disinfectant solution. For the artificial teeth resins, the immersion time of 12 months showed a significant color change when compared to 6 months. Cosmos TEMP 3D showed greater color change for all solutions, except for 0.25% sodium hypochlorite. Duralay resin showed greater color change in 2% chlorhexidine, regardless of immersion time. CONCLUSIONS For denture base resins, the immersion time significantly changed the color regardless of the solution. For artificial teeth resins, Cosmos TEMP 3D showed greater color changes in all solutions when compared to Duralay, except for 0.25% sodium hypochlorite. Chlorhexidine digluconate significantly changed the color of Duralay.
Collapse
Affiliation(s)
- Sabrina R G Coelho
- Department of Dental Materials and Prosthodontics, Araraquara Dental School, Universidade Estadual Paulista - UNESP, Araraquara, São Paulo, Brazil
| | - Marcela D D da Silva
- Department of Dental Materials and Prosthodontics, Araraquara Dental School, Universidade Estadual Paulista - UNESP, Araraquara, São Paulo, Brazil
| | - Thais S B S Nunes
- Department of Dental Materials and Prosthodontics, Araraquara Dental School, Universidade Estadual Paulista - UNESP, Araraquara, São Paulo, Brazil
| | - Hamile E C Viotto
- Department of Dental Materials and Prosthodontics, Araraquara Dental School, Universidade Estadual Paulista - UNESP, Araraquara, São Paulo, Brazil
| | - Danny O M Marin
- Department of Dentistry, Federal University of Santa Catarina - UFSC, Florianópolis, Santa Catarina, Brazil
| | - Ana C Pero
- Department of Dental Materials and Prosthodontics, Araraquara Dental School, Universidade Estadual Paulista - UNESP, Araraquara, São Paulo, Brazil
| |
Collapse
|
14
|
d'Avella E, Somma T, Fabozzi GL, Committeri U, Romano A, Cappabianca P, Cavallo LM. Endoscopic transorbital and transcranial multiportal resection of a sphenoorbital meningiomas with custom bone 3D printing reconstruction: Case report. Head Neck 2024; 46:E18-E25. [PMID: 37994687 DOI: 10.1002/hed.27582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 09/29/2023] [Accepted: 11/14/2023] [Indexed: 11/24/2023] Open
Abstract
BACKGROUND Sphenoorbital meningiomas (SOM) harbor intrinsic features that render their surgical management and the reconstruction of the resulting bony defect overtly challenging. METHODS A 70-year-old woman, harboring a long-standing left frontotemporal bony swelling conservatively managed, presented with progressive left proptosis. Radiological features were consistent with an en plaque SOM. A one-step multiportal transcranial and endoscopic transorbital approach (TOA) with custom bone three-dimensional (3D) printing reconstruction using polymethylmethacrylate (PMMA) was scheduled. RESULTS Postoperative functional and aesthetic results were excellent, with proptosis and calvarian deformity resolution. Tumor subtotal resection was achieved. Histopathological diagnosis confirmed a transitional meningioma (WHO grade I). CONCLUSIONS The endoscopic TOA, isolated or as part of a multiportal strategy, has entered the surgical armamentarium for the treatment of SOMs. A customized PMMA cranioplasty can be considered a possible option for the reconstruction of large bony defects in a one-step fashion.
Collapse
Affiliation(s)
- Elena d'Avella
- Division of Neurosurgery, Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University of Naples, Naples, Italy
| | - Teresa Somma
- Division of Neurosurgery, Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University of Naples, Naples, Italy
| | - Gianluca Lorenzo Fabozzi
- Division of Neurosurgery, Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University of Naples, Naples, Italy
| | - Umberto Committeri
- Division of Maxillofacial Surgery Unit, Department of Neurosciences and Reproductive and Dental Sciences, Federico II University of Naples, Naples, Italy
| | - Antonio Romano
- Division of Maxillofacial Surgery Unit, Department of Neurosciences and Reproductive and Dental Sciences, Federico II University of Naples, Naples, Italy
| | - Paolo Cappabianca
- Division of Neurosurgery, Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University of Naples, Naples, Italy
| | - Luigi Maria Cavallo
- Division of Neurosurgery, Department of Neurosciences and Reproductive and Odontostomatological Sciences, Federico II University of Naples, Naples, Italy
| |
Collapse
|
15
|
Iqbal H, Fernandes Q, Idoudi S, Basineni R, Billa N. Status of Polymer Fused Deposition Modeling (FDM)-Based Three-Dimensional Printing (3DP) in the Pharmaceutical Industry. Polymers (Basel) 2024; 16:386. [PMID: 38337275 DOI: 10.3390/polym16030386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/22/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
Additive manufacturing (AM) or 3D printing (3DP) is arguably a versatile and more efficient way for the production of solid dosage forms such as tablets. Of the various 3DP technologies currently available, fused deposition modeling (FDM) includes unique characteristics that offer a range of options in the production of various types of tablets. For example, amorphous solid dispersions (ASDs), enteric-coated tablets or poly pills can be produced using an appropriate drug/polymer combination during FDM 3DP. The technology offers the possibility of evolving personalized medicines into cost-effective production schemes at pharmacies and hospital dispensaries. In this review, we highlight key FDM features that may be exploited for the production of tablets and improvement of therapy, with emphasis on gastrointestinal delivery. We also highlight current constraints that must be surmounted to visualize the deployment of this technology in the pharmaceutical and healthcare industries.
Collapse
Affiliation(s)
- Heba Iqbal
- Pharmaceutical Sciences Department, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Queenie Fernandes
- College of Medicine, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Sourour Idoudi
- Pharmaceutical Sciences Department, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Renuka Basineni
- Pharmaceutical Sciences Department, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| | - Nashiru Billa
- Pharmaceutical Sciences Department, College of Pharmacy, QU Health, Qatar University, Doha P.O. Box 2713, Qatar
| |
Collapse
|
16
|
Sharma S, Tan E, Tran B, Siow HY, Tafesse E, Thong YHJ, Tan RJM, Son J, Todaro L, Teo J, Abduo J. Effect of pilot-guided implant placement concept on the accuracy of osteotomy preparation and implant placement. J Oral Sci 2024; 66:20-25. [PMID: 38030287 DOI: 10.2334/josnusd.23-0157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
PURPOSE To evaluate the accuracy of osteotomy preparation and implant placement for 3 pilot-guided (PG) concepts, namely, a surgical template with a metal sleeve (MS), a surgical template with an in-built nonmetal sleeve (NMS), and a surgical template with an in-built nonmetal sleeve for round bur indentation (RB). METHODS Surgical models with missing maxillary molars were studied. The MS templates were designed to accept metal sleeves, while the NMS and RB templates were designed with in-built nonmetal sleeves. Ten templates were tested per group (n = 10). After each step (pilot drilling, 2nd drilling, 3rd drilling, profiling, and implant placement), the surgical model was scanned and compared against the planning model to determine maximum horizontal deviation (MHD) and maximum angle deviation (MAD). RESULTS The MS and NMS templates exhibited a similar increase in MHD with successive drilling steps. The MAD for the pilot drilling step was significantly lower for MS than for the other groups. However, the differences among groups for MHD and MAD diminished in later steps. All templates had an MHD of 1.0 mm or less and an MAD less than 8°. CONCLUSION The investigated PG implant placement concepts resulted in similar deviations in the placed implants.
Collapse
Affiliation(s)
- Shruti Sharma
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Emilie Tan
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Britney Tran
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Hui Y Siow
- Restorative Section, Melbourne Dental School, Melbourne University
| | | | - Yoong H J Thong
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Row J M Tan
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Jungwoo Son
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Lisa Todaro
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Josephine Teo
- Restorative Section, Melbourne Dental School, Melbourne University
| | - Jaafar Abduo
- Restorative Section, Melbourne Dental School, Melbourne University
| |
Collapse
|
17
|
De Mori A, Karali A, Daskalakis E, Hing R, Da Silva Bartolo PJ, Cooper G, Blunn G. Poly-ε-Caprolactone 3D-Printed Porous Scaffold in a Femoral Condyle Defect Model Induces Early Osteo-Regeneration. Polymers (Basel) 2023; 16:66. [PMID: 38201731 PMCID: PMC10780383 DOI: 10.3390/polym16010066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/17/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Large bone reconstruction following trauma poses significant challenges for reconstructive surgeons, leading to a healthcare burden for health systems, long-term pain for patients, and complex disorders such as infections that are difficult to resolve. The use of bone substitutes is suboptimal for substantial bone loss, as they induce localized atrophy and are generally weak, and unable to support load. A combination of strong polycaprolactone (PCL)-based scaffolds, with an average channel size of 330 µm, enriched with 20% w/w of hydroxyapatite (HA), β-tricalcium phosphate (TCP), or Bioglass 45S5 (Bioglass), has been developed and tested for bone regeneration in a critical-size ovine femoral condyle defect model. After 6 weeks, tissue ingrowth was analyzed using X-ray computed tomography (XCT), Backscattered Electron Microscopy (BSE), and histomorphometry. At this point, all materials promoted new bone formation. Histological analysis showed no statistical difference among the different biomaterials (p > 0.05), but PCL-Bioglass scaffolds enhanced bone formation in the center of the scaffold more than the other types of materials. These materials show potential to promote bone regeneration in critical-sized defects on load-bearing sites.
Collapse
Affiliation(s)
- Arianna De Mori
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, St. Michael’s Building, White Swan Road, Portsmouth PO1 2DT, UK
| | - Aikaterina Karali
- Zeiss Global Centre, School of Mechanical and Design Engineering, University of Portsmouth, Portsmouth PO1 3DJ, UK
| | - Evangelos Daskalakis
- School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK (G.C.)
| | - Richard Hing
- School of Earth and Environmental Sciences, University of Portsmouth, Portsmouth PO1 2HB, UK
| | | | - Glen Cooper
- School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK (G.C.)
| | - Gordon Blunn
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, St. Michael’s Building, White Swan Road, Portsmouth PO1 2DT, UK
| |
Collapse
|
18
|
Corigliano MR, Carlson AM, Sillau SH, Stabio ME. An innovative 3D-printed model of the cerebral arterial circle for dental gross anatomy. J Dent Educ 2023. [PMID: 38129320 DOI: 10.1002/jdd.13440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 12/06/2023] [Accepted: 12/17/2023] [Indexed: 12/23/2023]
Affiliation(s)
- Michael R Corigliano
- Modern Human Anatomy Program, University of Colorado Anschutz Medical Campus, Aurora, Pennsylvania, USA
| | - Aaron M Carlson
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Stefan H Sillau
- Department of Neurology, Department of Biostatistics and Informatics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Maureen E Stabio
- Modern Human Anatomy Program, Department of Cell and Developmental Biology, Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| |
Collapse
|
19
|
Baytur S, Diken Turksayar AA. Effects of post-polymerization conditions on color properties, surface roughness, and flexural strength of 3D-printed permanent resin material after thermal aging. J Prosthodont 2023. [PMID: 38102064 DOI: 10.1111/jopr.13818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/06/2023] [Accepted: 12/09/2023] [Indexed: 12/17/2023] Open
Abstract
PURPOSE To evaluate the color, surface properties, and flexural strength of 3D-printed permanent crown resin subjected to different post-polymerization conditions after artificial aging. MATERIALS AND METHODS Ninety (10 × 2 mm) disc-shaped specimens were printed by using permanent crown resin with SLA technology. Specimens were divided into nine different groups, subject to post-polymerization conditions at three different times (15, 20, and 30 min) and three different temperatures (40, 60, and 80°C) (n = 10). Color and surface roughness measurements were repeated pre-post thermal aging (5.000 cycles, 5-55°C) and a flexural strength test was carried out. Data were analyzed with Shapiro-Wilk, Kruskal-Wallis, ANOVA, Tukey HSD, and Dunn tests (α < 0.05). RESULTS ΔE00 values showed results below the acceptable color threshold, except for the 30 min 40°C group (ΔE00 <1.8). No difference was found between the relative translucency parameter and surface roughness values of the 20 min 60°C group recommended by the manufacturer and the other groups. A significant difference was found between the flexural strength values of the groups (p < 0.001). CONCLUSIONS The color properties, surface topography, and mechanical properties of the printed permanent crown material were affected by different post-polymerization conditions: polymerized at different times and temperatures. Although the flexural strength and color change values showed promising results, more studies are required to evaluate its suitability for clinical use.
Collapse
Affiliation(s)
- Simge Baytur
- Department of Prosthodontics, Faculty of Dentistry, Beykent University, Istanbul, Turkey
| | - Almira Ada Diken Turksayar
- Department of Prosthodontics, Faculty of Dentistry, Biruni University, Istanbul, Turkey
- ADMiRE Research Center-Additive Manufacturing, Intelligent Robotics, Sensors and Engineering, School of Engineering and IT, Carinthia University of Applied Sciences, Villach, Austria
| |
Collapse
|
20
|
Dutta S, Bieling TJ, Verbiest GJ. Evaporation induced acoustic emissions in microfluidic vessels. R Soc Open Sci 2023; 10:231029. [PMID: 38094272 PMCID: PMC10716658 DOI: 10.1098/rsos.231029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 11/20/2023] [Indexed: 01/11/2024]
Abstract
Fluid flow processes such as drainage and evaporation in porous media are crucial in geological and biological systems. The motion of the displacement front of a moving fluid through multi-phase interfaces is often associated with abrupt mechanical energy release, detectable as acoustic emissions (AEs). The exact origin of these pulses and their damping mechanisms are still subjects of debate. Here, we study the characteristics of such AEs during evaporation of water from artificial microfluidic vessels, inspired by the physiology of vascular water-transport in plants. From the extracted settling times of the recorded AEs, we identify three pulse types and attribute their origins to bubble formation, snap-off events and rapid pore invasion. We also show that the resonance frequencies between 10 and 70 kHz present in specific pulse types decrease with increasing vessel radius (ranging from 0.25 to 1.0 mm) and length (ranging from 2.5 to 10.0 mm). Our findings provide insight into evaporation-induced AEs from microfluidic systems, and their potential use in non-invasive inspection or vascular health monitoring.
Collapse
Affiliation(s)
- S. Dutta
- Department of Precision and Microsystems Engineering, Faculty of 3ME, TU Delft, Mekelweg 2, Delft 2628CD, The Netherlands
| | - T. J. Bieling
- Department of Precision and Microsystems Engineering, Faculty of 3ME, TU Delft, Mekelweg 2, Delft 2628CD, The Netherlands
| | - G. J. Verbiest
- Department of Precision and Microsystems Engineering, Faculty of 3ME, TU Delft, Mekelweg 2, Delft 2628CD, The Netherlands
| |
Collapse
|
21
|
Liu F, Lei Q, Cai L, Jiang M, Yang H, Wang K, Ding Z, Liu W. Efficacy comparison between iliosacral screw fixation of the posterior pelvic ring fracture with the assistance of modified percutaneous three-dimensional printing guide template and conventional fluoroscopy. Zhong Nan Da Xue Xue Bao Yi Xue Ban 2023; 48:1703-1710. [PMID: 38432861 PMCID: PMC10929951 DOI: 10.11817/j.issn.1672-7347.2023.230122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Indexed: 03/05/2024]
Abstract
OBJECTIVES The effect of three-dimensional (3D) printed bone-attached guide plate assisted cannulated screw fixation of pelvic fracture is reliable, but extensive soft tissue dissection is still required when installing the guide plate. This study aims to compare the efficacy of posterior pelvic ring fracture fixation with iliosacral screw insertion between the assistance of modified percutaneous patient specific 3D printed guide template and conventional fluoroscopy. METHODS From May, 2019 and September 2021, 28 patients sustained posterior pelvic ring fractures were randomized into 2 groups: A guide template group, in which the iliosacral screw was inserted for fixation of the posterior pelvic ring fracture with the assistance of modified percutaneous patient specific 3D printed guide template, and a fluoroscopy group, in which the iliosacral screw was inserted under the guidance of conventional fluoroscopy. The operation time, fluoroscopic frequency, intraoperative blood loss, and incision length were recorded for each screw insertion. Fracture reduction was evaluated according to the Matta criteria. The screw position was evaluated according to the modified Gras classification, and the functional outcome was evaluated according to Majeed score. The parameters of both groups were compared, and statistical analysis was performed. RESULTS All the 28 patients were followed up for 12-24 months. Of them, 15 iliosacral screws were inserted in 14 patients in the guide template group, and 14 iliosacral screws were inserted in 14 patients in the fluoroscopy group. The operation time, fluoroscopic frequency, screw deviation, incision length, and blood loss in the guide template group were 20-30(25.8±2.8) min, 9-15(12.2±1.9), 2-4(2.6±0.7) mm, 4-5(4.6±0.5) cm, and 5-10 (7.8±1.7) mL, respectively, whereas those in the fluoroscopy group were 30-60(48.1±7.5) min, 40-96(64.7±16.3), 3-6(4.2±0.9) mm, 0.8-1.2(1.0±0.1) cm, and 2-5(3.1±1.3) mL, respectively, and there were statistical significance (all P<0.001). Fracture reduction was evaluated according to the Matta criteria, and all the patients reached excellence and good (P=0.584) in the 2 groups. According to modified Gras classification, there were 12 Grade I screws, 3 Grade II screws, and 0 Grade III screws in the guide template group, and 10 Grade I screws, 3 Grade II screws, and 1 Grade III screw in the fluoroscopy group, with no statistical significance (P=0.334). The functional outcome was evaluated according to Majeed score at the last follow-up, without significant difference between the guide template group and the fluoroscopy group (P=0.908). CONCLUSIONS Compared with the conventional fluoroscopy, it would cost less operation time, less fluoroscopic frequency and increase more accurate screw insertion to fixate the posterior pelvic ring fracture with the assistance of modified percutaneous patient specific 3D printed guide template.
Collapse
Affiliation(s)
- Feng Liu
- Department of Orthopedics, Third Hospital of Changsha, Changsha 410015.
| | - Qing Lei
- Department of Orthopedics, Third Hospital of Changsha, Changsha 410015.
- 3D Printing Technology Medical Application Research Institute of Changsha, Changsha 410015.
| | - Lihong Cai
- 3D Printing Technology Medical Application Research Institute of Changsha, Changsha 410015
- Department of Radiology, Third Hospital of Changsha, Changsha 410015, China
| | - Minghui Jiang
- Department of Orthopedics, Third Hospital of Changsha, Changsha 410015
| | - Hongqi Yang
- Department of Orthopedics, Third Hospital of Changsha, Changsha 410015
| | - Kang Wang
- Department of Orthopedics, Third Hospital of Changsha, Changsha 410015
| | - Zhou Ding
- Department of Orthopedics, Third Hospital of Changsha, Changsha 410015
| | - Wenqian Liu
- Department of Orthopedics, Third Hospital of Changsha, Changsha 410015
| |
Collapse
|
22
|
Tao F, Li L, Wang D, Dong J, Zhou D, Song W. Three-dimensional printing versus traditional surgery for inveterate pelvic and acetabular fractures: A retrospective study of 37 patients. Medicine (Baltimore) 2023; 102:e36149. [PMID: 37986284 PMCID: PMC10659720 DOI: 10.1097/md.0000000000036149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 11/22/2023] Open
Abstract
Treatment of deformed pelvic and acetabular fractures is a considerable challenge for orthopedic surgeons. The aim of this study was to assess the availability of a three-dimensional (3D) printing model used in patients with inveterate pelvic and acetabular fractures by comparing 3D printing technology with conventional surgery. We conducted a retrospective review of patients with inveterate pelvic and acetabular fractures treated in our department between January 2008 and June 2020. The patients were divided into 2 groups according to their willingness. Perioperative data and clinical outcomes were compared to evaluate clinical efficacy. The t-test, Fisher exact test, and multivariable logistic regression analysis were conducted. A P value of .05 or less was considered to be statistically significant (two-tailed). Thirty-seven patients were enrolled in our study. Seventeen patients were divided into the case group treated by 3D printing model-assisted preoperative planning, and 20 patients were divided into the control group treated by conventional surgery. Patients treated with the 3D printing model had significantly shorter operation times, less blood loss, and shorter fluoroscopy times. Patients in the case group also showed better pain relief according to visual analog scale scores. However, the elevations in pelvis and hip joint functional outcomes were similar between the 2 groups, and no significant difference was shown in the radiological result. The usage of 3D printing techniques in patients with inveterate pelvic and acetabular fractures is of great importance in preoperative preparation and optimization of surgery but cannot improve postoperative function compared with conventional treatment.
Collapse
Affiliation(s)
- Fulin Tao
- Department of Orthopedic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Lin Li
- Department of Orthopedic Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Orthopedic Surgery, Tengzhou Central People’s Hospital Affiliated to Jining Medical University, Tengzhou, Shandong, China
| | - Dawei Wang
- Department of Orthopedic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Jinlei Dong
- Department of Orthopedic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Dongsheng Zhou
- Department of Orthopedic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
- Department of Orthopedic Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Wenhao Song
- Department of Orthopedic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| |
Collapse
|
23
|
Raje K, Ohashi K, Fujita S. Three-Dimensional Printer-Assisted Electrospinning for Fabricating Intricate Biological Tissue Mimics. Nanomaterials (Basel) 2023; 13:2913. [PMID: 37999268 PMCID: PMC10675084 DOI: 10.3390/nano13222913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/26/2023] [Accepted: 11/06/2023] [Indexed: 11/25/2023]
Abstract
Although regenerative medicine necessitates advanced three-dimensional (3D) scaffolds for organ and tissue applications, creating intricate structures across scales, from nano- to meso-like biological tissues, remains a challenge. Electrospinning of nanofibers offers promise due to its capacity to craft not only the dimensions and surfaces of individual fibers but also intricate attributes, such as anisotropy and porosity, across various materials. In this study, we used a 3D printer to design a mold with polylactic acid for gel modeling. This gel template, which was mounted on a metal wire, facilitated microfiber electrospinning. After spinning, these structures were treated with EDTA to remove the template and were then cleansed and dried, resulting in 3D microfibrous (3DMF) structures, with average fiber diameters of approximately 1 µm on the outer and inner surfaces. Notably, these structures matched their intended design dimensions without distortion or shrinkage, demonstrating the adaptability of this method for various template sizes. The cylindrical structures showed high elasticity and stretchability with an elastic modulus of 6.23 MPa. Furthermore, our method successfully mimicked complex biological tissue structures, such as the inner architecture of the voice box and the hollow partitioned structure of the heart's tricuspid valve. Achieving specific intricate shapes required multiple spinning sessions and subsequent assemblies. In essence, our approach holds potential for crafting artificial organs and forming the foundational materials for cell culture scaffolds, addressing the challenges of crafting intricate multiscale structures.
Collapse
Affiliation(s)
- Komal Raje
- Department of Advanced Interdisciplinary Science and Technology, University of Fukui, Fukui 910-8507, Japan;
| | - Keisuke Ohashi
- Department of Frontier Fiber Technology and Sciences, University of Fukui, Fukui 910-8507, Japan
| | - Satoshi Fujita
- Department of Advanced Interdisciplinary Science and Technology, University of Fukui, Fukui 910-8507, Japan;
- Department of Frontier Fiber Technology and Sciences, University of Fukui, Fukui 910-8507, Japan
- Life Science Innovation Center, University of Fukui, Fukui 910-8507, Japan
| |
Collapse
|
24
|
Rasmussen KAM, Stewart BC, Janes WE. Feasibility of customized 3D-printed assistive technology within an existing multidisciplinary amyotrophic lateral sclerosis clinic. Disabil Rehabil Assist Technol 2023; 18:1466-1472. [PMID: 35148223 DOI: 10.1080/17483107.2022.2034996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 01/22/2022] [Indexed: 10/19/2022]
Abstract
PURPOSE Three-dimensional (3 D) printing of assistive technology (AT) is an emerging intervention in rehabilitation sciences. Existing research primarily considers narrow applications of this technology with most studies focussing on a single type of assistive device. Individuals with amyotrophic lateral scleroses (ALS) have high abandonment rates of prefabricated AT. Therefore, the goal of this project was to determine the implementation and acceptability feasibility of meeting AT needs through the creation of customized, 3D-printed devices within an existing multidisciplinary ALS clinic. METHODS Implementation feasibility was measured using descriptive statistics about the research team's ability to fulfil device requests. Acceptability was evaluated using semi-structured patient satisfaction interviews after AT device provision. The study utilized thematic analysis to identify patterns in the qualitative data collected from participant interviews. RESULTS Nine participants identified at least one need for 3D-printed assistive devices customized to their unique performance abilities and needs. Seven participants received 3D-printed devices, four of whom completed the follow-up interview. The research team was able to fulfil 20 of 34 device requests, supporting implementation feasibility. Thematic analysis revealed three themes from the interviews: Satisfaction with Devices and Services, Value of Training as a Service, and Increased Participation and Choice. CONCLUSIONS These findings demonstrate implementation feasibility and participant satisfaction with the process of receiving devices, supporting acceptability feasibility. Future research into the efficacy of customized 3D-printed AT is recommended.Implications for rehabilitationIndividuals with ALS have unmet needs in assistive technology.Custom AT development using 3D printing can be implemented within an existing, multidisciplinary ALS clinic.Future 3D printing research should rigorously investigate methods to meet the unique needs and challenges of individuals in this setting.
Collapse
Affiliation(s)
| | - Breanna C Stewart
- Department of Occupational Therapy, University of Missouri, Columbia, MO, USA
| | - William E Janes
- Department of Occupational Therapy, University of Missouri, Columbia, MO, USA
| |
Collapse
|
25
|
Kaushik S, Rathee M, Jain P, Malik S, Agarkar V, Alam M. Effect of conventionally fabricated and three-dimensional printed provisional restorations on hard and soft peri-implant tissues in the mandibular posterior region: A randomized controlled clinical trial. Dent Res J (Isfahan) 2023; 20:109. [PMID: 38020257 PMCID: PMC10680073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 09/07/2022] [Accepted: 09/26/2022] [Indexed: 12/01/2023] Open
Abstract
Background The purpose of this study was to conduct a randomized controlled clinical trial to compare and evaluate the effect of provisional restorations fabricated by two techniques, namely, conventional and three-dimensional (3D) printing processes on the peri-implant hard and soft tissues over early nonfunctional loaded implants in the mandibular posterior region. Materials and Methods A randomized controlled clinical trial was conducted across 24 subjects broadly divided into two groups with 12 dental implants each, i.e., GpIC with conventionally fabricated provisional restoration and GpIID with 3D printed fabricated provisional restoration. The prosthetic phase was carried out at 2 weeks, and subjects were evaluated at baseline (at the time of prosthesis placement), 2 months, and 4 months for peri-implant marginal bone level, mucosal suppuration, sulcular probing depth, and modified sulcular bleeding index. Patient satisfaction was assessed using 5-item questionnaires at 4 months. The intragroup comparison for all the data was done using Wilcoxon signed-rank test. The intergroup comparison for all the data was done using Mann-Whitney U-test. The comparison of frequency of responses between GpIC and GpIID was done using Chi-square test. P < 0.05 was considered to be statistically significant. Results Nonsignificant difference was observed in all the hard and soft tissue parameters between the groups at baseline, 2 months, and 4 months (P > 0.05). Improvement in bleeding on probing was found to be greater around dental implants restored with 3D printed provisional restoration than dental implants restored with conventionally fabricated provisional restoration from baseline to 4 months of follow-up, and the difference in finding was statistically significant (P < 0.05). There was a statistically nonsignificant difference seen for the frequencies between the groups (P > 0.05) for all questions related to patient satisfaction. Conclusion The effect of conventionally fabricated and 3D printed provisional restorations on peri-implant hard and soft tissues was comparable to each other on an early nonfunctionally loaded implant in the mandibular posterior region.
Collapse
Affiliation(s)
- Smriti Kaushik
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Manu Rathee
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Prachi Jain
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Sanju Malik
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Vipul Agarkar
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Maqbul Alam
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| |
Collapse
|
26
|
Chen M, Ren M, Shi Y, Liu X, Wei H. State-of-the-art polyetheretherketone three-dimensional printing and multifunctional modification for dental implants. Front Bioeng Biotechnol 2023; 11:1271629. [PMID: 37929192 PMCID: PMC10621213 DOI: 10.3389/fbioe.2023.1271629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/05/2023] [Indexed: 11/07/2023] Open
Abstract
Polyetheretherketone (PEEK) is a high-performance thermoplastic polymer with an elastic modulus close to that of the jawbone. PEEK has the potential to become a new dental implant material for special patients due to its radiolucency, chemical stability, color similarity to teeth, and low allergy rate. However, the aromatic main chain and lack of surface charge and chemical functional groups make PEEK hydrophobic and biologically inert, which hinders subsequent protein adsorption and osteoblast adhesion and differentiation. This will be detrimental to the deposition and mineralization of apatite on the surface of PEEK and limit its clinical application. Researchers have explored different modification methods to effectively improve the biomechanical, antibacterial, immunomodulatory, angiogenic, antioxidative, osteogenic and anti-osteoclastogenic, and soft tissue adhesion properties. This review comprehensively summarizes the latest research progress in material property advantages, three-dimensional printing synthesis, and functional modification of PEEK in the fields of implant dentistry and provides solutions for existing difficulties. We confirm the broad prospects of PEEK as a dental implant material to promote the clinical conversion of PEEK-based dental implants.
Collapse
Affiliation(s)
- Meiqing Chen
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Mei Ren
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Yingqi Shi
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xiuyu Liu
- Hospital of Stomatogy, Jilin University, Changchun, China
| | - Hongtao Wei
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, China
| |
Collapse
|
27
|
Cameron AB, Tong K, Tadakamadla S, Evans JL, Abuzar M. Effect of build orientation on the trueness of occlusal splints fabricated by three-dimensional printing. J Oral Sci 2023; 65:261-264. [PMID: 37690838 DOI: 10.2334/josnusd.23-0115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
PURPOSE Scientific evidence pertaining to the evaluation of trueness of occlusal splints fabricated using different three-dimensional (3D) printers and build orientations compared to subtractive technologies is lacking. METHODS Overall, one hundred and ten occlusal splints were manufactured using two different 3D printers and a dental mill. Five groups of ten were fabricated using the 3D printers at different build orientations (0, 30, 45, 60, and 90 degrees). In addition, a comparison group of ten occlusal splints was subtractively manufactured using a five-axis dental mill. All occlusal splints were scanned and exported as a standard tessellation language file. Analysis was conducted with metrology software with root mean square estimate average positive deviation and average negative deviation used as the measured outcome. RESULTS The 0 degree printing orientation was the most accurate for printer one with the root mean square value of 0.05 ± 0.01 mm, and 60 degree printing orientation was most accurate for printer two with the RMS value of 0.11 ± 0.01 mm. Subtractively manufactured occlusal splint had significantly higher trueness with the lowest RMS value of 0.03 ± 0.05 mm. CONCLUSION Build orientations influence the trueness of additively manufactured occlusal splints while occlusal splints produced by subtractive manufacturing were statistically significantly more accurate.
Collapse
Affiliation(s)
| | - Keith Tong
- School of Medicine and Dentistry, Griffith University
| | - Santosh Tadakamadla
- Dentistry and Oral Health, Department of Rural Clinical Sciences, La Trobe Rural Health School, La Trobe University
- Violet Vines Marshman Centre for Rural Health Research, La Trobe Rural Health School, La Trobe University
| | - Jane L Evans
- School of Medicine and Dentistry, Griffith University
| | - Menaka Abuzar
- School of Medicine and Dentistry, Griffith University
| |
Collapse
|
28
|
Souza Curinga MR, de Sousa LC, Carneiro Pereira AL, de Melo Segundo HV, Cunha Maciel Dantas LM, Carreiro ADFP. Accuracy of models of partially edentulous arches obtained by three-dimensional printing: An in vitro study. J Indian Prosthodont Soc 2023; 23:356-362. [PMID: 37861612 DOI: 10.4103/jips.jips_130_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023] Open
Abstract
Aim The aim of this study was to evaluate the accuracy of models of partially edentulous arches obtained by three-dimensional (3D) printing. Settings and Design This was an in vitro study. Materials and Methods Fifteen partially edentulous models were evaluated, using two methods of measuring dimensions: virtual, using the Standard Tessellation Language files of the models and software (control group), and physical, through printing the models and digital caliper (test group). For both methods, measurements were made regarding the dimensions of the teeth (width and length - buccal/lingual or palatal/occlusal) and distances between the teeth. Statistical Analysis Used For the variable of linear measurements (width and length) and distances between teeth of the same hemiarch, the Wilcoxon test was used, while for the variable between opposite hemiarches, the paired t-test was used. Results In the evaluation of the linear measurements, a significant difference was observed only when the width of the molar tooth was analyzed (P = 0.014). When the buccal length was measured, all teeth had linear measurements provided by the virtual method that was lower than the physical (P = 0.000), as well as the lingual/palatal length in incisors (P = 0.003) and molars (P = 0.009) and in total (P = 0.001). As for the analyses between teeth, no difference was identified between the measurements provided by the virtual method compared to the physical one. Conclusions The 3D printer used to print partially edentulous models provided linear distortions in the teeth but without changes in the distances between teeth of the same hemiarch and between teeth of opposite hemiarches.
Collapse
Affiliation(s)
| | - Lucas Cavalcante de Sousa
- Department of Dentistry, Federal University of Rio Grande Do Norte (UFRN), Natal, Rio Grande Do Norte, Brazil
| | | | | | | | | |
Collapse
|
29
|
Elrahim RAA, Shown A, Abdellah M, Abualsaud R, Helal MA. Impact of different chemical denture cleansers on the properties of digitally fabricated denture base resin materials. J Prosthodont 2023. [PMID: 37767991 DOI: 10.1111/jopr.13761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 08/25/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023] Open
Abstract
PURPOSE To compare the impact of three different chemical denture cleansers (CDCs) (Corega, chlorhexidine, and hydrogen peroxide) on the surface roughness, microhardness, and color stability of 3D-printed, computer-aided design and computer-aided manufacturing (CAD-CAM) milled, and heat-polymerized denture base material (DBM). MATERIALS AND METHODS A total of 420 disc-shaped specimens (10 ± 0.1 × 2 ±0.1 mm) were fabricated using three different construction techniques: three-dimensional (3D) printing (n = 140), CAD-CAM milling (n = 140), and heat-polymerization (n = 140). Sixty specimens (20 of each DBM) were used for baseline (pre-immersion) measurements (T1 ) for the tested surface properties (hardness [n = 10/material] and roughness [n = 10/material]). The remaining 360 specimens (n = 120/material) were investigated for surface roughness, microhardness, and color change after immersion for 1 year (T2 ) in distilled water or CDCs (n = 30/solution and n = 10/test). The data were analyzed using two-way ANOVA, one-way ANOVA followed by post-hoc Tukey's test at a significance level of less than 0.05. RESULTS Significant differences were observed in the effects of the tested CDCs on the surface roughness, micro-hardness, and color stability of varying DBM specimens (p < 0.05). Corega showed the highest surface roughness and color change in all DBMs while H2 O2 resulted in the lowest microhardness for all DBMs. The lowest changes in all tested properties were seen with distilled water followed by chlorhexidine. A significant effect of type of cleanser, denture base material, and the interaction between the two was seen on all measured properties (p < 0.05). CONCLUSIONS The tested CDCs significantly affected the surface properties of all DBMs but at varying degrees. Corega produced the highest negative effect on roughness and color change while H2 O2 dramatically affected the microhardness. Prolonged use of CDCs should be cautiously followed.
Collapse
Affiliation(s)
| | - Ahmed Shown
- Department of Prosthodontics, Faculty of Dental Medicine, Al-Azhar University, Cairo, Egypt
- Al Mouwasat Hospital, Al Madinah Al Mounawarah, KSA
| | - Mahmoud Abdellah
- Department of Dental Biomaterials, Faculty of Dental Medicine, Al-Azhar University, Assuit, Egypt
| | - Reem Abualsaud
- Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mohamed Ahmed Helal
- Department of Prosthodontics, Faculty of Dental Medicine, Al-Azhar University, Cairo, Egypt
| |
Collapse
|
30
|
Wang Y, Jin P, Meng X, Li L, Mao Y, Zheng M, Liu L, Liu Y, Yang J. Treatment of Severe Pulmonary Regurgitation in Enlarged Native Right Ventricular Outflow Tracts: Transcatheter Pulmonary Valve Replacement with Three-Dimensional Printing Guidance. Bioengineering (Basel) 2023; 10:1136. [PMID: 37892867 PMCID: PMC10604601 DOI: 10.3390/bioengineering10101136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/15/2023] [Accepted: 09/25/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND Severe pulmonary regurgitation (PR) often occurs following a transannular patch repair of tetralogy of Fallot, resulting in an enlarged native right ventricular outflow tract (nRVOT) with varying shapes. METHODS We conducted a single-center study with eight patients having severe PR and enlarged nRVOT (diameters ≥ 29 mm). Transcatheter pulmonary valve replacement (TPVR) was performed using the self-expanding PT-Valve. Preoperative evaluation included echocardiography, computed tomography, and magnetic resonance imaging. A 3D-printed model of the nRVOT was used for preoperative assessment. Follow-up data were collected in 1-year follow-up. RESULTS PT-Valve was successfully implanted in all patients, resulting in immediate improvement of severe PR. Pulmonary artery diastolic pressure increased significantly (p < 0.001). No deaths or coronary compression occurred during the procedure. Over a 1-year follow-up, no stent displacement or fracture occurred. Only two patients had trace paravalvular leaks. Magnetic resonance imaging revealed a reversal of right ventricular remodeling, with a significant reduction in right ventricular end-diastolic volume index (p < 0.001) and improved right ventricular ejection fraction (p < 0.001). All patients achieved primary endpoints. CONCLUSION 3D printing-guided PT-Valve implantation in enlarged nRVOT for severe PR is safe and effective, expanding TPVR indications and offering potential treatment for a broader patient population.
Collapse
Affiliation(s)
- Yiwei Wang
- Department of Cardiovascular Surgery, Xijing Hospital, Air Force Medical University, Xi’an 710032, China; (Y.W.); (P.J.)
| | - Ping Jin
- Department of Cardiovascular Surgery, Xijing Hospital, Air Force Medical University, Xi’an 710032, China; (Y.W.); (P.J.)
| | - Xin Meng
- Department of Ultrasound Medicine, Xijing Hospital, Air Force Medical University, Xi’an 710032, China
| | - Lanlan Li
- Department of Cardiovascular Surgery, Xijing Hospital, Air Force Medical University, Xi’an 710032, China; (Y.W.); (P.J.)
| | - Yu Mao
- Department of Cardiovascular Surgery, Xijing Hospital, Air Force Medical University, Xi’an 710032, China; (Y.W.); (P.J.)
| | - Minwen Zheng
- Department of Radiology, Xijing Hospital, Air Force Medical University, Xi’an 710032, China
| | - Liwen Liu
- Department of Ultrasound Medicine, Xijing Hospital, Air Force Medical University, Xi’an 710032, China
| | - Yang Liu
- Department of Cardiovascular Surgery, Xijing Hospital, Air Force Medical University, Xi’an 710032, China; (Y.W.); (P.J.)
| | - Jian Yang
- Department of Cardiovascular Surgery, Xijing Hospital, Air Force Medical University, Xi’an 710032, China; (Y.W.); (P.J.)
| |
Collapse
|
31
|
Liu Y, Zhang Z, Wang W, Yu C, Liu C, Huang Z, Xu K, Zhang H. Artificial intelligence planning and 3D printing augmented modules in the treatment of a complicated hip joint revision: a case report. Front Surg 2023; 10:1237075. [PMID: 37795146 PMCID: PMC10546305 DOI: 10.3389/fsurg.2023.1237075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 09/05/2023] [Indexed: 10/06/2023] Open
Abstract
Total hip revision with osseous defects can be very difficult. Artificial intelligence offers preoperative planning, real-time measurement, and intraoperative judgment, which can guide prothesis placement more accurately. Three-dimensional printed metel augment modules which are made according to the individualized osseous anatomy, can fit the osseous defects well and provide mechanical support. In this case, we used AI to plan the size and position of the acetabular cup and 3D-printed augmented modules in a complicated hip revision with an acetabular bone defects, which achieved stable fixation and relieved hip pain postoperatively.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Haining Zhang
- Department of Joint Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| |
Collapse
|
32
|
Yang Y, Yang B, Chang Z, Duan J, Chen W. Research Status of and Prospects for 3D Printing for Continuous Fiber-Reinforced Thermoplastic Composites. Polymers (Basel) 2023; 15:3653. [PMID: 37688279 PMCID: PMC10490110 DOI: 10.3390/polym15173653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 09/10/2023] Open
Abstract
Continuous fiber-reinforced thermoplastic composites (CFRTPCs) have advantages such as high specific strength, high specific modulus, corrosion resistance, and recyclability and are widely used in the fields of aerospace, rail transit, new energy, and so on. However, traditional methods for preparing CFRTPCs, such as placement and molding, rely more on forming molds, resulting in high manufacturing costs and a slow response speed, which limits the promotion and application of the new generation of CFRTPCs with complex configurations and designable performance. Three-dimensional printing can efficiently create products with multiple materials, complex structures, and integrated functions, introducing new ways and opportunities for the manufacturing of CFRTPCs. However, poor mechanical properties are the bottleneck problem in achieving 3D printing of CFRTPCs. This paper summarizes the research status of the fused deposition modeling (FDM) 3D printing process and the corresponding mechanical properties of CFRTPCs. The focus is on analyzing the influences of the FDM process parameters, such as the material type, printing temperature, speed parameters, layer thickness, scanning space, stacking direction, and fiber volume content, on the mechanical properties of CFRTPCs. Finally, the main problems and future prospects of current CFRTPCs-FDM are analyzed and forecasted, providing new references and ideas for 3D printing of high-performance CFRTPCs.
Collapse
Affiliation(s)
- Yuan Yang
- Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi’an University of Technology, Xi’an 710048, China
| | - Bo Yang
- Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi’an University of Technology, Xi’an 710048, China
| | - Zhengping Chang
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Jihao Duan
- Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi’an University of Technology, Xi’an 710048, China
| | - Weihua Chen
- Key Laboratory of Manufacturing Equipment of Shaanxi Province, Xi’an University of Technology, Xi’an 710048, China
| |
Collapse
|
33
|
Figueiredo TDM, Do Amaral GCLS, Bezerra GN, Nakao LYS, Villar CC. Three-dimensional-printed scaffolds for periodontal regeneration: A systematic review. J Indian Soc Periodontol 2023; 27:451-460. [PMID: 37781321 PMCID: PMC10538520 DOI: 10.4103/jisp.jisp_350_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 01/14/2023] [Accepted: 01/15/2023] [Indexed: 10/03/2023] Open
Abstract
Background As current ethical codes preclude determining whether the clinical improvements obtained with the use of three-dimensional (3D)-printed scaffolds represent true periodontal regeneration, the histological proof of evidence for regeneration must be demonstrated in animal models. Thus, this systematic review investigated the regenerative potential of 3D-printed scaffolds in animal models of periodontal defects. Materials and Methods A systematic search was performed in four databases (Medline, Embase, Web of Science, and Scopus) to identify preclinical controlled studies that investigated the use of 3D-printed scaffolds for periodontal regeneration. Studies limited to periodontal defects treated with 3D scaffolds were eligible for inclusion. The primary outcome was periodontal regeneration, assessed histologically as new bone, cementum, and periodontal ligament (PDL). This systematic review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Quality was assessed according to the SRYCLE score. Results Six studies met the inclusion criteria. Scaffolds were designed using computer-aided design software. While the absence of a scaffold resulted in defects repaired mainly with fibrous connective tissue, the use of nonguiding 3D scaffolds promoted some bone formation. Notably, the regeneration of cementum and functional PDL fibers perpendicularly inserted into the root surface and the alveolar bone was limited to the defects treated with multi-compartment fiber-guiding or ion-containing 3D scaffolds. Nevertheless, the quality of the evidence was limited due to the unclear risk of bias. Conclusions Despite the limitations of the available evidence, the current data suggest that the use of printed multi-compartment fiber-guiding or ion-containing 3D scaffolds improves periodontal regeneration in animal models.
Collapse
Affiliation(s)
| | | | - Gabriela Neiva Bezerra
- Department of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Lais Yumi Souza Nakao
- Department of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Cristina Cunha Villar
- Department of Periodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
34
|
Felton H, Schiffmann O, Goudswaard M, Gopsill J, Snider C, Real R, McClenaghan A, Hicks B. Maker communities and the COVID-19 pandemic: a longitudinal analysis of Thingiverse's response to supply shortages. R Soc Open Sci 2023; 10:230790. [PMID: 37771964 PMCID: PMC10523067 DOI: 10.1098/rsos.230790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/29/2023] [Indexed: 09/30/2023]
Abstract
The COVID-19 pandemic profoundly affected various aspects of daily life, particularly the supply and demand of essential goods, resulting in critical shortages. This included personal protective equipment for medical professionals and the general public. To address these shortages, online 'maker communities' emerged, aiming to develop and locally manufacture critical products. While some organized efforts existed, the majority of initiatives originated from individuals and groups on platforms like Thingiverse. This paper presents a longitudinal analysis of Thingiverse, one of the largest maker community websites, to examine the pandemic's effects. Our findings reveal a surge in community output during the initial lockdown periods in major contributing nations (primarily those in the Western Hemisphere), followed by a subsequent decline. Additionally, throughout 2020, pandemic-related products dominated uploads and interactions during this period. Based on these observations, we propose recommendations to expedite the community's ability to support local, national and international responses to future disasters.
Collapse
Affiliation(s)
- H. Felton
- Design Manufacturing Futures Laboratory, Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, UK
| | - O. Schiffmann
- Design Manufacturing Futures Laboratory, Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, UK
| | - M. Goudswaard
- Design Manufacturing Futures Laboratory, Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, UK
| | - J. Gopsill
- Design Manufacturing Futures Laboratory, Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, UK
| | - C. Snider
- Design Manufacturing Futures Laboratory, Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, UK
| | - R. Real
- Design Manufacturing Futures Laboratory, Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, UK
| | - A. McClenaghan
- Design Manufacturing Futures Laboratory, Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, UK
| | - B. Hicks
- Design Manufacturing Futures Laboratory, Department of Mechanical Engineering, University of Bristol, Bristol BS8 1TR, UK
| |
Collapse
|
35
|
Carter CB, Gallardo FF, Colburn HE, Schlieder DW. Novel Digital Workflow for Nasoalveolar Molding and Postoperative Nasal Stent for Infants With Cleft Lip and Palate. Cleft Palate Craniofac J 2023; 60:1176-1181. [PMID: 35477311 DOI: 10.1177/10556656221095393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE We present a novel digital workflow to provide presurgical infant orthopedic (PSIO) treatment for a patient with a unilateral cleft lip/palate utilizing nasoalveolar molding (NAM) and a custom postsurgical nasal stent. SETTING Within the US military healthcare system, the Joint Base San Antonio Craniofacial Anomalies Team utilizes dental scanners, predictive 3D modeling software, and 3D printing technology in a digital workflow for NAM appliance fabrication. WORKFLOW Soft tissue facial scanning, peri-oral scanning, and dental putty impressions are used to facilitate fabrication and measure outcomes. Digital modeling software and 3D resin printing are utilized to manufacture the prescribed devices. MAIN OUTCOME MEASURES AND RESULTS Extra-oral facial scans and intra-oral impressions are compared between 3 timepoints: pre-treatment, posttreatment with NAM, and postsurgical treatment. CONCLUSIONS The ability to share workflows, establish outcome standards, and streamline patient care will continue to advance best practices in digital PSIO.
Collapse
Affiliation(s)
- Chad B Carter
- Air Force Postgraduate Dental School and Uniformed Services University of the Health Sciences, Postgraduate Dental College, Joint Base San Antonio, Lackland Air Force Base, TX, USA
| | - Francisco F Gallardo
- Uniformed Services University of Health Sciences, Nellis Air Force Base, NV, USA
| | - Hannah E Colburn
- Uniformed Services University of Health Sciences, Joint Base San Antonio, Lackland Air Force Base, TX, USA
| | - Daniel W Schlieder
- Uniformed Services University of Health Sciences, Brooke Army Medical Center, TX, USA
| |
Collapse
|
36
|
Liu X, Gao J, Cui X, Nie S, Wu X, Zhang L, Tang P, Liu J, Li M. Functionalized 3D-Printed PLA Biomimetic Scaffold for Repairing Critical-Size Bone Defects. Bioengineering (Basel) 2023; 10:1019. [PMID: 37760121 PMCID: PMC10526104 DOI: 10.3390/bioengineering10091019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/04/2023] [Accepted: 08/24/2023] [Indexed: 09/29/2023] Open
Abstract
The treatment of critical-size bone defects remains a complicated clinical challenge. Recently, bone tissue engineering has emerged as a potential therapeutic approach for defect repair. This study examined the biocompatibility and repair efficacy of hydroxyapatite-mineralized bionic polylactic acid (PLA) scaffolds, which were prepared through a combination of 3D printing technology, plasma modification, collagen coating, and hydroxyapatite mineralization coating techniques. Physicochemical analysis, mechanical testing, and in vitro and animal experiments were conducted to elucidate the impact of structural design and microenvironment on osteogenesis. Results indicated that the PLA scaffold exhibited a porosity of 84.1% and a pore size of 350 μm, and its macrostructure was maintained following functionalization modification. The functionalized scaffold demonstrated favorable hydrophilicity and biocompatibility and promoted cell adhesion, proliferation, and the expression of osteogenic genes such as ALP, OPN, Col-1, OCN, and RUNX2. Moreover, the scaffold was able to effectively repair critical-size bone defects in the rabbit radius, suggesting a novel strategy for the treatment of critical-size bone defects.
Collapse
Affiliation(s)
- Xiao Liu
- Medical School of Chinese PLA, Beijing 100853, China; (X.L.); (J.G.)
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China; (X.C.); (S.N.); (X.W.); (L.Z.); (P.T.)
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Jianpeng Gao
- Medical School of Chinese PLA, Beijing 100853, China; (X.L.); (J.G.)
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China; (X.C.); (S.N.); (X.W.); (L.Z.); (P.T.)
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Xiang Cui
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China; (X.C.); (S.N.); (X.W.); (L.Z.); (P.T.)
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Shaobo Nie
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China; (X.C.); (S.N.); (X.W.); (L.Z.); (P.T.)
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Xiaoyong Wu
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China; (X.C.); (S.N.); (X.W.); (L.Z.); (P.T.)
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Licheng Zhang
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China; (X.C.); (S.N.); (X.W.); (L.Z.); (P.T.)
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Peifu Tang
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China; (X.C.); (S.N.); (X.W.); (L.Z.); (P.T.)
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Jianheng Liu
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China; (X.C.); (S.N.); (X.W.); (L.Z.); (P.T.)
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| | - Ming Li
- Department of Orthopaedics, The Fourth Medical Center of the Chinese PLA General Hospital, Beijing 100853, China; (X.C.); (S.N.); (X.W.); (L.Z.); (P.T.)
- National Clinical Research Center for Orthopedics, Sports Medicine & Rehabilitation, Beijing 100853, China
| |
Collapse
|
37
|
Hasanzade M, Zabandan D, Mosaddad SA, Habibzadeh S. Comparison of marginal and internal adaptation of provisional polymethyl methacrylate restorations fabricated by two three-dimensional printers: An in vitro study. Dent Res J (Isfahan) 2023; 20:87. [PMID: 37810446 PMCID: PMC10557992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/02/2023] [Accepted: 07/17/2023] [Indexed: 10/10/2023] Open
Abstract
Background Chairside fabrication of provisional restorations using three-dimensional (3D) printers is rising in digital dentistry. The purpose of this research was to compare the marginal and internal adaptation of provisional polymethyl methacrylate (PMMA) restorations fabricated by two different 3D printers. Materials and Methods In this in vitro investigation, an intact maxillary 1st molar acrylic model was first digitalized by a laboratory scanner. It was then prepared for an all-ceramic restoration and scanned again by the same scanner. The final restoration was designed in Exocad according to the scan files with a 50 μm cement gap. PMMA restorations were printed by two 3D printers; Group 1: Asiga (n = 10) and Group 2: Digident (n = 10). The replica technique was used to assess the marginal and internal fit of the restorations, and one-way ANOVA was used to analyze the data. P <0.05 was regarded as statistically significant. Results The mean marginal gap of crowns in Group 1 was significantly lower than that of Group 2 (75 vs. 195 μm, P = 0.001). Regarding internal adaptation, no significant difference was found between the axial gap values in both groups (P > 0.05). The mean occluso-axial gap (90 vs. 140 μm, P = 0.026) and the mean occlusal gap (116 vs. 300 μm, P = 0.001) of crowns in Group 1 were significantly smaller compared to the equivalent values in Group 2. Conclusion Provisional PMMA crowns fabricated by the Asiga printer showed significantly higher marginal and internal adaptation than those manufactured by Digident at all points except for the axial surface.
Collapse
Affiliation(s)
- Mahya Hasanzade
- Department of Prosthodontics, School of Dentistry, International Campus, Tehran University of Medical Sciences, Tehran, Iran
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Dariush Zabandan
- Department of Prosthodontics, School of Dentistry, International Campus, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Ali Mosaddad
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sareh Habibzadeh
- Department of Prosthodontics, School of Dentistry, International Campus, Tehran University of Medical Sciences, Tehran, Iran
- Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
38
|
Zhang C, Zhou Z, Liu N, Chen J, Wu J, Zhang Y, Lin K, Zhang S. Osteogenic differentiation of 3D-printed porous tantalum with nano-topographic modification for repairing craniofacial bone defects. Front Bioeng Biotechnol 2023; 11:1258030. [PMID: 37671184 PMCID: PMC10475942 DOI: 10.3389/fbioe.2023.1258030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 08/09/2023] [Indexed: 09/07/2023] Open
Abstract
Introduction: Congenital or acquired bone defects in the oral and cranio-maxillofacial (OCMF) regions can seriously affect the normal function and facial appearance of patients, and cause great harm to their physical and mental health. To achieve good bone defect repair results, the prosthesis requires good osteogenic ability, appropriate porosity, and precise three-dimensional shape. Tantalum (Ta) has better mechanical properties, osteogenic ability, and microstructure compared to Ti6Al4V, and has become a potential alternative material for bone repair. The bones in the OCMF region have unique shapes, and 3D printing technology is the preferred method for manufacturing personalized prosthesis with complex shapes and structures. The surface characteristics of materials, such as surface morphology, can affect the biological behavior of cells. Among them, nano-topographic surface modification can endow materials with unique surface properties such as wettability and large surface area, enhancing the adhesion of osteoblasts and thereby enhancing their osteogenic ability. Methods: This study used 3D-printed porous tantalum scaffolds, and constructed nano-topographic surface through hydrothermal treatment. Its osteogenic ability was verified through a series of in vitro and in vivo experiments. Results: The porous tantalum modified by nano-topographic surface can promote the proliferation and osteogenic differentiation of BMSCs, and accelerate the formation of new bone in the Angle of the mandible bone defect of rabbits. Discussion: It can be seen that 3D-printed nano-topographic surface modified porous tantalum has broad application prospects in the repair of OCMF bone defects.
Collapse
Affiliation(s)
- Chuxi Zhang
- Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral and Cranio-Maxillofacial Surgery, National Clinical Research Center, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhongwei Zhou
- Ningxia Key Laboratory of Oral Diseases Research, Department of Oral and Maxillofacial Surgery, General Hospital of Ningxia Medical University, Institute of Medical Sciences, Yinchuan, Ningxia, China
| | - Nian Liu
- Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral and Cranio-Maxillofacial Surgery, National Clinical Research Center, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiangping Chen
- Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral and Cranio-Maxillofacial Surgery, National Clinical Research Center, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinyang Wu
- Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral and Cranio-Maxillofacial Surgery, National Clinical Research Center, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yong Zhang
- Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral and Cranio-Maxillofacial Surgery, National Clinical Research Center, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kaili Lin
- Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral and Cranio-Maxillofacial Surgery, National Clinical Research Center, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shilei Zhang
- Shanghai Key Laboratory of Stomatology and Shanghai Research Institute of Stomatology, Department of Oral and Cranio-Maxillofacial Surgery, National Clinical Research Center, Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
39
|
盛 宏, 张 瑀, 尤 奇, 龚 涛, 李 壮, 何 宣, 唐 凡, 周 勇, 王 一, 卢 敏, 罗 翼, 闵 理, 屠 重. [Mid-term effectiveness of hip preservation in the reconstruction of ultrashort bone segments in the proximal femur with three-dimensional printed customized cementless intercalary endoprosthesis with an intra-neck curved stem]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2023; 37:970-977. [PMID: 37586797 PMCID: PMC10435341 DOI: 10.7507/1002-1892.202304057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/14/2023] [Indexed: 08/18/2023]
Abstract
Objective To explore the design points of a three-dimensional (3D) printed customized cementless intercalary endoprosthesis with an intra-neck curved stem and to evaluate the key points and mid-term effectiveness of its application in the reconstruction of ultrashort bone segments in the proximal femur. Methods Between October 2015 and January 2021, 17 patients underwent reconstruction with a 3D printed-customized cementless intercalary endoprosthesis with an intra-neck curved stem. There were 11 males and 6 females, the age ranged from 10 to 76 years, with an average of 30.1 years. There were 9 cases of osteosarcoma, 4 cases of Ewing sarcoma, 2 cases of chondrosarcoma, 1 case of liposarcoma, and 1 case of myofibroblastoma. The disease duration was 5-14 months, with an average of 9.5 months. Enneking staging included 16 cases of stage ⅡB and 1 case of stage ⅢB. The distances from the center of the femoral head to the body midline and the acetabular apex were measured preoperatively on X-ray images. Additionally, the distances from the tip of the intra-neck curved stem to the body midline and the acetabular apex were measured at immediate postoperatively and last follow-up. The neck-shaft angle was also measured preoperatively, at immediate postoperatively, and at last follow-up. The status of osseointegration at the bone-prosthesis interface and bone growth into the prosthesis surface were assessed by X-ray films, CT, and Tomosynthesis-Shimadzu metal artefact reduction technology (T-SMART). The survival status of the patients, presence of local recurrence or distant metastasis, and occurrence of postoperative complications were assessed. The recovery of lower limb function was evaluated pre- and post-operatively using the Musculoskeletal Tumor Society (MSTS) scoring system, and pain relief was evaluated using the visual analogue scale (VAS) scores. Results The patient's femoral resection length was (163.1±57.5) mm, the remaining proximal femoral length was (69.6±9.3) mm, and the percentage of femoral resection length/total femoral length was 38.7%±14.6%. All 17 patients were followed up 25-86 months with an average of 58.1 months. During the follow-up, 1 patient died of lung metastasis at 46 months postoperatively, and the remaining 16 patients survived tumor-free. There was no complication such as periprosthetic infection, delayed incision healing, aseptic loosening, prosthesis fracture, or periprosthetic fracture. No evidence of micromotion or wear around the implanted stem of the prosthesis was detected in X-ray and T-SMART evaluations. There was no significant radiolucent lines, and radiographic evidence of bone ingrowth into the bone-prosthesis interface was observed in all stems. There was no significant difference in the distance from the tip of the curved stem to the body midline and the apex of the acetabulum at immediate postoperatively and last follow-up compared with the distance from the center of the femoral head to the body midline and the apex of the acetabulum before operation, respectively (P>0.05), and there was no significant difference in the above indexes between immediate postoperatively and last follow-up (P>0.05). The differences in the neck-shaft angle at various time points before and after operation were also not significant (P>0.05). At last follow-up, the MSTS score was 26.1±1.2 and the VAS score was 0.1±0.5, which were significantly improved when compared with those before operation [19.4±2.1 and 5.7±1.0, respectively] (t=14.735, P<0.001; t=21.301, P<0.001). At last follow-up, none of the patients walked with the aid of crutches or other walkers. Conclusion The 3D printed customized cementless intercalary endoprosthesis with an intra-neck curved stem is an effective method for reconstructing ultrashort bone segments in the proximal femur following malignant tumor resection. The operation is reliable, the postoperative lower limb function is satisfactory, and the incidence of complications is low.
Collapse
Affiliation(s)
- 宏涛 盛
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 瑀琦 张
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 奇 尤
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 涛军 龚
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 壮壮 李
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 宣虹 何
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 凡 唐
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 勇 周
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 一天 王
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 敏勋 卢
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 翼 罗
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 理 闵
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| | - 重棋 屠
- 四川大学华西医院骨科 骨科研究所(成都 610041)Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China
| |
Collapse
|
40
|
Sun T, Wang J, Huang H, Liu X, Zhang J, Zhang W, Wang H, Li Z. Low-temperature deposition manufacturing technology: a novel 3D printing method for bone scaffolds. Front Bioeng Biotechnol 2023; 11:1222102. [PMID: 37622000 PMCID: PMC10445654 DOI: 10.3389/fbioe.2023.1222102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 08/01/2023] [Indexed: 08/26/2023] Open
Abstract
The application of three-dimensional printing technology in the medical field has great potential for bone defect repair, especially personalized and biological repair. As a green manufacturing process that does not involve liquefication through heating, low-temperature deposition manufacturing (LDM) is a promising type of rapid prototyping manufacturing and has been widely used to fabricate scaffolds in bone tissue engineering. The scaffolds fabricated by LDM have a multi-scale controllable pore structure and interconnected micropores, which are beneficial for the repair of bone defects. At the same time, different types of cells or bioactive factor can be integrated into three-dimensional structural scaffolds through LDM. Herein, we introduced LDM technology and summarize its applications in bone tissue engineering. We divide the scaffolds into four categories according to the skeleton materials and discuss the performance and limitations of the scaffolds. The ideas presented in this review have prospects in the development and application of LDM scaffolds.
Collapse
Affiliation(s)
- Tianze Sun
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Dalian, Liaoning, China
- Division of Energy Materials (DNL22), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Jinzuo Wang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Dalian, Liaoning, China
| | - Huagui Huang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Dalian, Liaoning, China
| | - Xin Liu
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Dalian, Liaoning, China
| | - Jing Zhang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Dalian, Liaoning, China
| | - Wentao Zhang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Dalian, Liaoning, China
| | - Honghua Wang
- Division of Energy Materials (DNL22), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Zhonghai Li
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Dalian, Liaoning, China
| |
Collapse
|
41
|
Asciak L, Gilmour L, Williams JA, Foster E, Díaz-García L, McCormick C, Windmill JFC, Mulvana HE, Jackson-Camargo JC, Domingo-Roca R. Investigating multi-material hydrogel three-dimensional printing for in vitro representation of the neo-vasculature of solid tumours: a comprehensive mechanical analysis and assessment of nitric oxide release from human umbilical vein endothelial cells. R Soc Open Sci 2023; 10:230929. [PMID: 37593713 PMCID: PMC10427827 DOI: 10.1098/rsos.230929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 07/25/2023] [Indexed: 08/19/2023]
Abstract
Many solid tumours (e.g. sarcoma, carcinoma and lymphoma) form a disorganized neo-vasculature that initiates uncontrolled vessel formation to support tumour growth. The complexity of these environments poses a significant challenge for tumour medicine research. While animal models are commonly used to address some of these challenges, they are time-consuming and raise ethical concerns. In vitro microphysiological systems have been explored as an alternative, but their production typically requires multi-step lithographic processes that limit their production. In this work, a novel approach to rapidly develop multi-material tissue-mimicking, cell-compatible platforms able to represent the complexity of a solid tumour's neo-vasculature is investigated via stereolithography three-dimensional printing. To do so, a series of acrylate resins that yield covalently photo-cross-linked hydrogels with healthy and diseased mechano-acoustic tissue-mimicking properties are designed and characterized. The potential viability of these materials to displace animal testing in preclinical research is assessed by studying the morphology, actin expression, focal adhesions and nitric oxide release of human umbilical vein endothelial cells. These materials are exploited to produce a simplified multi-material three-dimensional printed model of the neo-vasculature of a solid tumour, demonstrating the potential of our approach to replicate the complexity of solid tumours in vitro without the need for animal testing.
Collapse
Affiliation(s)
- Lisa Asciak
- Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, UK
| | - Lauren Gilmour
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK
| | | | - Euan Foster
- Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, UK
| | - Lara Díaz-García
- Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, UK
| | | | - James F. C. Windmill
- Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, UK
| | - Helen E. Mulvana
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, UK
| | | | - Roger Domingo-Roca
- Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, UK
| |
Collapse
|
42
|
Sakong SY, Cho JW, Kim BS, Park SJ, Lim EJ, Oh JK. The Clinical Efficacy of Contouring Periarticular Plates on a 3D Printed Bone Model. J Pers Med 2023; 13:1145. [PMID: 37511758 PMCID: PMC10381594 DOI: 10.3390/jpm13071145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/12/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
We report our experience of preoperative plate contouring for periarticular fractures using three-dimensional printing (3DP) technology and describe its benefits. We enrolled 34 patients, including 11 with humerus midshaft fractures, 12 with tibia plateau fractures, 2 with pilon fractures, and 9 with acetabulum fractures. The entire process of plate contouring over the 3DP model was videotaped and retrospectively analyzed. The total time and number of trials for the intraoperative positioning of precontoured plates and any further intraoperative contouring events were prospectively recorded. The mismatch between the planned and postoperative plate positions was evaluated. The average plate contouring time was 9.2 min for humerus shaft, 13.8 min for tibia plateau fractures, 8.8 min for pilon fractures, and 11.6 min for acetabular fractures. Most precontoured plates (88%, 30/34) could sit on the planned position without mismatch. In addition, only one patient with humerus shaft fracture required additional intraoperative contouring. Preoperative patient specific periarticular plate contouring using a 3DP model is a simple and efficient method that may alleviate the surgical challenges involved in plate contouring and positioning.
Collapse
Affiliation(s)
- Seung-Yeob Sakong
- Department of Orthopaedic SurgeryAjou University Hospital, Ajou University College of Medicine, Suwon 16499, Republic of Korea
| | - Jae-Woo Cho
- Department of Orthopedic Surgery, Korea University Guro Hospital, Seoul 08308, Republic of Korea
| | - Beom-Soo Kim
- Department of Orthopedic Surgery, Keimyung University Dongsan Hospital, Keimyung University Medicine, Daegu 41931, Republic of Korea
| | - Sung-Jun Park
- Department of Mechanical Engineering, Korea National University of Transportation, Chungbuk 27469, Republic of Korea
| | - Eic-Ju Lim
- Department of Orthopaedic Surgery, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju 28644, Republic of Korea
| | - Jong-Keon Oh
- Department of Orthopedic Surgery, Korea University Guro Hospital, Seoul 08308, Republic of Korea
| |
Collapse
|
43
|
Ilieva S, Georgieva D, Petkova V, Dimitrov M. Study and Characterization of Polyvinyl Alcohol-Based Formulations for 3D Printlets Obtained via Fused Deposition Modeling. Pharmaceutics 2023; 15:1867. [PMID: 37514053 PMCID: PMC10384282 DOI: 10.3390/pharmaceutics15071867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 07/30/2023] Open
Abstract
Three-dimensional (3D) printing has emerged as a new promising technique for the production of personalized dosage forms and medical devices. Polyvinyl alcohol is prominently used as a source material to produce 3D-printed medicines via fused deposition modeling (FDM)-a technology that combines hot melt extrusion and 3D printing. A preliminary screening of three grades of PVA indicated that partially hydrolyzed PVA with a molecular weight (MW) of 31,000-50,000 and plasticized with sorbitol was most suitable for 3D printing. Paracetamol was used as a model drug. The materials and the produced filaments were characterized by X-ray powder diffraction (XRPD), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The complex viscosity (η*) of the polymer melts was determined as a function of the angular frequency (ω) at the printing temperature to assess their printability. Three-dimensional printlets with a 40% infill exhibited an immediate release of the API, while tablets with a higher infill were prone to a prolonged release regardless of the filament drug loading. A factorial design was used to give more insight into the influence of the drug-loading of the filaments and the tablet infill as independent variables on the production of 3D printlets. The Pareto chart confirmed that the infill had a statistically significant effect on the dissolution rate after 45 min, which was chosen as the response variable.
Collapse
Affiliation(s)
- Sofiya Ilieva
- Department of Pharmaceutical Technology and Biopharmacy, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria
| | - Dilyana Georgieva
- Department of Pharmaceutical Technology and Biopharmacy, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria
| | - Valentina Petkova
- Department of Organisation and Economics of Pharmacy, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria
| | - Milen Dimitrov
- Department of Pharmaceutical Technology and Biopharmacy, Faculty of Pharmacy, Medical University of Sofia, 2 Dunav Str., 1000 Sofia, Bulgaria
| |
Collapse
|
44
|
Rani P, Yadav V, Pandey P, Yadav K. Recent patent-based review on the role of three-dimensional printing technology in pharmaceutical and biomedical applications. Pharm Pat Anal 2023; 12:159-175. [PMID: 37882734 DOI: 10.4155/ppa-2023-0018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
Three-dimensional printing (3DP) is emerging as an innovative manufacturing technology for biomedical and pharmaceutical applications, since the US FDA approval of Spritam as a 3D-printed drug. In the present review, we have highlighted the potential benefits of 3DP technology in healthcare, such as the ability to create patient-specific medical devices and implants, as well as the possibility of on-demand production of drugs and personalized dosage forms. We have further discussed future research to optimize 3DP processes and materials for pharmaceutical and biomedical applications. Cohesively, we have put forward the current state of active patents and applications related to 3DP technology in the healthcare and pharmaceutical industries including hearing aids, prostheses, medical devices and drug-delivery systems.
Collapse
Affiliation(s)
- Palak Rani
- Chandigarh College of Pharmacy, Chandigarh Group of Colleges, Mohali, 140307, Punjab, India
| | - Vikas Yadav
- Department of Translational Medicine, Clinical Research Centre, Skane University Hospital, Lund University, Malmö SE-20213, Sweden
| | - Parijat Pandey
- Department of Pharmaceutical Sciences, Gurugram University, Gurugram, 122018, Haryana, India
| | - Kiran Yadav
- Chandigarh College of Pharmacy, Chandigarh Group of Colleges, Mohali, 140307, Punjab, India
| |
Collapse
|
45
|
Rathee M, Chahal S, Alam M, Singh S, Divakar S. Surgical Rehabilitation of a Continuous Orbital and Maxillary Defect from Rhino-Orbital Mucormycosis Utilising Digital Technology - A Case Report. Ann Maxillofac Surg 2023; 13:224-227. [PMID: 38405554 PMCID: PMC10883209 DOI: 10.4103/ams.ams_54_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 07/13/2023] [Accepted: 09/02/2023] [Indexed: 02/27/2024] Open
Abstract
Rationale COVID-19 has led to a resurgence in cases of mucormycosis, especially the rhino-orbital form affecting the oral cavity, nasal, orbital and cerebral regions. Patient Concerns The surgical treatment in this patient led to the exenteration of orbital contents and segmental maxillectomy of the affected side leading to facial disfigurement and inability to masticate. Diagnosis A combined mucormycosis-associated oro-orbital defect was present leading to a communication between oral and orbital cavities. Treatment Rehabilitation utilising digital technology for removable prosthesis was planned for the combined orbital and oral defect. Outcomes The independent intraoral and orbital prosthesis reduced the mobility of the orbital prosthesis while performing functional movements. The advancements in digital technology led to the convenient and resilient fabrication of prostheses for large facial defects. Take-away Lessons The prosthetic rehabilitation of a continuous orbital and oral defect with a hybrid of both digital and conventional means provided an aesthetic, feasible and financially sound solution to the patient.
Collapse
Affiliation(s)
- Manu Rathee
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Sujata Chahal
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Maqbul Alam
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - Sandeep Singh
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| | - S. Divakar
- Department of Prosthodontics, Post Graduate Institute of Dental Sciences, Pt. B.D. Sharma University of Health Sciences, Rohtak, Haryana, India
| |
Collapse
|
46
|
Masada KM, Cristino DM, Dear KA, Hast MW, Mehta S. 3-D Printed Fracture Models Improve Resident Performance and Clinical Outcomes in Operative Fracture Management. J Surg Educ 2023; 80:1020-1027. [PMID: 37198080 DOI: 10.1016/j.jsurg.2023.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 12/30/2022] [Accepted: 04/09/2023] [Indexed: 05/19/2023]
Abstract
OBJECTIVE To determine if preoperative examination of patient additive manufactured (AM) fracture models can be used to improve resident operative competency and patient outcomes. DESIGN Prospective cohort study. Seventeen matched pairs of fracture fixation surgeries (for a total of 34 surgeries) were performed. Residents first performed a set of baseline surgeries (n = 17) without AM fracture models. The residents then performed a second set of surgeries randomly assigned to include an AM model (n = 11) or to omit it (n = 6). Following each surgery, the attending surgeon evaluated the resident using an Ottawa Surgical Competency Operating Room Evaluation (O-Score). The authors also recorded clinical outcomes including operative time, blood loss, fluoroscopy duration, and patient reported outcome measurement information system (PROMIS) scores of pain and function at 6 months. SETTING Single-center academic level one trauma center. PARTICIPANTS Twelve orthopaedic residents, between postgraduate year (PGY) 2 and 5, participated in this study. RESULTS Residents significantly improved their O-Scores between the first and second surgery when they trained with AM models for the second surgery (p = 0.004, 2.43 ± 0.79 versus 3.73 ± 0.64). Similar improvements were not observed in the control group (p = 0.916, 2.69 ± 0.69 versus 2.77 ± 0.36). AM model training also significantly improved clinical outcomes, including surgery time (p = 0.006), fluoroscopy exposure time (p = 0.002), and patient reported functional outcomes (p = 0.0006). CONCLUSIONS Conclusions: Training with AM fracture models improves the performance of orthopaedic surgery residents during fracture surgery.
Collapse
Affiliation(s)
- Kendall M Masada
- Hospital of the University of Pennsylvania, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania.
| | - Danielle M Cristino
- Hospital of the University of Pennsylvania, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Kayley A Dear
- Hospital of the University of Pennsylvania, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michael W Hast
- Hospital of the University of Pennsylvania, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Samir Mehta
- McKay Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| |
Collapse
|
47
|
Charoenphol K, Peampring C. Fit Accuracy of Complete Denture Base Fabricated by CAD/CAM Milling and 3D-Printing Methods. Eur J Dent 2023; 17:889-894. [PMID: 36513334 PMCID: PMC10569868 DOI: 10.1055/s-0042-1757211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE Digital complete denture fabrication can be accomplished by either milling or three-dimensional (3D)-printing approach in which minimal distortion during processing contributes to effective denture base adaption, which leads to good denture retention. The purpose of this study was to compare the fit accuracy of milled and 3D-printed complete denture bases. MATERIALS AND METHODS The reference edentulous maxillary arch model was scanned to generate virtual denture bases using computer-aided manufacturing software that exports as standard tessellation language files. Denture bases were constructed using a milling and 3D-printing technique using digital light processing method (n = 10). Intaglio surfaces of denture bases were scanned and superimposed on the reference model. The fit accuracy was quantified as root mean square error and evaluated statistically using independent t-test comparisons with a significance level of 0.05. RESULTS Milled denture bases were significantly more accurate in adaptation than 3D-printed dentures in the overall intaglio area and primary bearing area of denture bases. 3D-printed denture bases demonstrated significantly greater accuracy in adaptation than milled denture bases in the peripheral/posterior palatal seal area. CONCLUSION Milled denture bases fit better in the overall and primary stress-bearing areas than 3D-printed dentures, while 3D-printed dentures appeared more accurate in the peripheral seal area, which had a minor undercut that is not suitable for using milling technology.
Collapse
Affiliation(s)
- Kanyakorn Charoenphol
- Department of Prosthetic Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Chaimongkon Peampring
- Department of Prosthetic Dentistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| |
Collapse
|
48
|
Kende PP, Sarda AS, Landge J, Wadewale M, Kri M, Ranganath S. Pre-adjusted Three-Dimensional Plate Employing Printing versus Conventional Plate in the Management of Mandibular Fractures - A Comparative Study. Ann Maxillofac Surg 2023; 13:163-166. [PMID: 38405567 PMCID: PMC10883210 DOI: 10.4103/ams.ams_197_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 08/25/2023] [Accepted: 09/21/2023] [Indexed: 02/27/2024] Open
Abstract
Introduction The aim of this study was to compare the efficacy of pre-adjusted three-dimensional (3D) plating system employing 3D printing with conventional 3D plating in the management of mandibular fractures. Materials and Methods A randomised, clinical trial was conducted where the study sample (n = 20) was divided into two groups. In Group 1, 3D plate and in Group 2, pre-bent 3D plate was fixed to the fracture site. The parameters assessed were number of bends required for adaptation, duration of fixation, pain, occlusal stability, reduction in lingual splaying and post-operative complications. Results Statistically significant difference was seen for the number of bends required (P = 0.000, P < 0.01) and duration of fracture fixation (P = 0.001, P < 0.01). There was statistically significant difference between the values of pain during the adaptation of 3D plate (P = 0.033, P < 0.05). Discussion The application of pre-adjusted 3D plate is superior to conventional 3D plating in terms of reducing number of bends, duration of fixation and pain during adaptation.
Collapse
Affiliation(s)
- Prajwalit P Kende
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Mumbai, Maharashtra, India
| | - Ashish Sunilkumar Sarda
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Mumbai, Maharashtra, India
| | - Jayant Landge
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Mumbai, Maharashtra, India
| | - Maroti Wadewale
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Mumbai, Maharashtra, India
| | - Mrimingsi Kri
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Mumbai, Maharashtra, India
| | - Suleka Ranganath
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Mumbai, Maharashtra, India
| |
Collapse
|
49
|
Alshamrani A, Alhotan A, Kelly E, Ellakwa A. Mechanical and Biocompatibility Properties of 3D-Printed Dental Resin Reinforced with Glass Silica and Zirconia Nanoparticles: In Vitro Study. Polymers (Basel) 2023; 15:polym15112523. [PMID: 37299322 DOI: 10.3390/polym15112523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
This study aimed to assess the mechanical and biocompatibility properties of dental resin reinforced with different nanoparticle additives. Temporary crown specimens were 3D-printed and grouped based on nanoparticle type and amount, including zirconia and glass silica. Flexural strength testing evaluated the material's ability to withstand mechanical stress using a three-point bending test. Biocompatibility was tested using MTT and dead/live cell assays to assess effects on cell viability and tissue integration. Fractured specimens were analysed using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) for fracture surface examination and elemental composition determination. Results show that adding 5% glass fillers and 10-20% zirconia nanoparticles significantly improves the flexural strength and biocompatibility of the resin material. Specifically, the addition of 10%, 20% zirconia, and 5% glass silica by weight significantly increases the flexural strength of the 3D-printed resins. Biocompatibility testing reveals cell viabilities greater than 80% in all tested groups. Reinforced 3D-printed resin holds clinical potential for restorative dentistry, as zirconia and glass fillers have been shown to enhance mechanical and biocompatibility properties of dental resin, making it a promising option for dental restorations. The findings of this study may contribute to the development of more effective and durable dental materials.
Collapse
Affiliation(s)
- Abdullah Alshamrani
- Oral Rehabilitation & Dental Biomaterial and Bioengineering, The University of Sydney, Sydney 2006, Australia
- Department of Dental Health, College of Applied Medical Sciences, King Saud University, Riyadh P.O. Box 12372, Saudi Arabia
| | - Abdulaziz Alhotan
- Department of Dental Health, College of Applied Medical Sciences, King Saud University, Riyadh P.O. Box 12372, Saudi Arabia
| | - Elizabeth Kelly
- The Cellular and Molecular Pathology Research Unit, Oral Pathology and Oral Medicine, School of Dentistry, The University of Sydney, Westmead Hospital, Westmead 2145, Australia
| | - Ayman Ellakwa
- Oral Rehabilitation & Dental Biomaterial and Bioengineering, The University of Sydney, Sydney 2006, Australia
| |
Collapse
|
50
|
Sun Z, Jia R, Wang X, Pang X. Three-dimensional simulation/printing-assisted surgery for symptomatic metastatic epidural spinal cord compression of posterior column: efficacy assessment based on 2-year follow-up. Front Surg 2023; 10:1177280. [PMID: 37304181 PMCID: PMC10250737 DOI: 10.3389/fsurg.2023.1177280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 05/04/2023] [Indexed: 06/13/2023] Open
Abstract
Background Surgical intervention is necessary for resolving the symptoms of the spinal cord and nerve compression caused by symptomatic metastatic epidural spinal cord compression. However, surgeons are constantly seeking ways to improve surgical efficiency and safety. This study aims to evaluate the efficacy of 3D simulation/printing-assisted surgery for symptomatic metastatic epidural spinal cord compression of the posterior column. Methods We retrospectively analyzed the clinical data of patients who underwent surgical treatment for symptomatic metastatic epidural spinal cord compression of the posterior column in our hospital from January 2015 to January 2020. The simulated group underwent a 3D digital simulation of the lesion area using imaging data before surgery. Twelve patients in the simulated group also received 3D printing, while the direct surgery group did not receive any 3D simulation or printing. All patients were followed up for at least 2 years. We collected clinical data, including operation time, intraoperative blood loss, pedicle screw adjustment rate, intraoperative fluoroscopy times, the incidence of dural injury and cerebrospinal fluid leakage, VAS score, postoperative neurological function improvement, and tumor recurrence. Statistical analysis was performed using SPSS23.0, and P < 0.05 was considered statistically significant. Results A total of 46 patients were included in this study, with 20 in the simulated group and 26 in the non-simulated group. The simulated group had better operation time, intraoperative blood loss, screw adjustment rate, fluoroscopy times, and incidence of dural injury/cerebrospinal fluid leakage compared to the non-simulated group. The VAS scores of the two groups improved significantly after the operation and at the last follow-up compared to before the operation. However, there was no statistically significant difference between the two groups. There was also no statistically significant difference in neurological function improvement between the two groups. In the simulated group, 25% of patients relapsed, while in the non-simulated group, 34.61% of patients relapsed. However, there was no statistical difference between the two groups. Conclusion Preoperative 3D simulation/printing-assisted surgery is a practical and feasible approach for treating symptomatic metastatic epidural spinal cord compression of the posterior column.
Collapse
|