1
|
Schmalzl J, Keskeny GÁ, Hermann P, Pál A, Géczi Z, Borbély J, Róth I. Evaluating the influence of palate scanning on the accuracy of complete-arch digital impressions-An in vitro study. J Dent 2024; 145:105014. [PMID: 38648874 DOI: 10.1016/j.jdent.2024.105014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 04/12/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024] Open
Abstract
OBJECTIVES To assess the impact of including the palate and the number of images recorded during intraoral digital scanning procedure on the accuracy of complete arch scans. METHODS An experienced operator conducted 40 digital scans of a 3D printed maxillary model and divided them into two groups: 20 with inclusion of the palate (PAL) and 20 without (NPAL). Each set of scans was performed using an intraoral scanner (IOS) (Trios 5; 3Shape A/S; Copenhagen, Denmark). The resulting STL files were imported into the Geomagic Control X software (3D Systems, Rock Hill, SC, USA) for accuracy comparison. A reference STL file was created using a 3Shape E3 laboratory scanner (3Shape Scanlt Dental 2.2.1.0; Copenhagen, Denmark). The number of images captured was recorded during the scanning procedure. RESULTS In the case of the right side no statistically significant difference in trueness was detected (84 µm ± 45.6 for PAL and 80.4 ± 40.4 µm for NPAL). In the case of the left side no significant difference in trueness was observed (215.1 ± 70.2 µm for PAL and 233.9 ± 70.7 µm for NPAL). In the case of the arch distortion a statistically significant difference in trueness was seen between the two types of scans (135.3 ± 71.9 µm for PAL and 380.4 ± 255.1 µm for NPAL). The average number of images was 831.25, and 593.8 for PAL and NPAL, respectively. CONCLUSIONS Scanning of the palatal area can significantly improve the accuracy of dental scans in cases of complete arches. In terms of the number of images, based on the current results, obvious conclusions could not be drawn, and further investigation is required. CLINICAL SIGNIFICANCE Scanning the palate may be beneficial for improving the accuracy of intraoral scans in dentate patients. Consequently, this should be linked to an appropriate scanning strategy that predicts palatal scanning.
Collapse
Affiliation(s)
- Judit Schmalzl
- Department of Prosthodontics, Semmelweis University, Szentkirályi street 47, Budapest 1088, Hungary; Semmelweis University's School of Ph.D. Studies, Üllői u. 26, Budapest 1085, Hungary.
| | - György Árpád Keskeny
- Semmelweis University's School of Ph.D. Studies, Üllői u. 26, Budapest 1085, Hungary
| | - Péter Hermann
- Department of Prosthodontics, Semmelweis University, Szentkirályi street 47, Budapest 1088, Hungary
| | - Adrienn Pál
- Department of Prosthodontics, Semmelweis University, Szentkirályi street 47, Budapest 1088, Hungary; Semmelweis University's School of Ph.D. Studies, Üllői u. 26, Budapest 1085, Hungary
| | - Zoltán Géczi
- Department of Prosthodontics, Semmelweis University, Szentkirályi street 47, Budapest 1088, Hungary
| | - Judit Borbély
- Department of Prosthodontics, Semmelweis University, Szentkirályi street 47, Budapest 1088, Hungary
| | - Ivett Róth
- Department of Prosthodontics, Semmelweis University, Szentkirályi street 47, Budapest 1088, Hungary
| |
Collapse
|
2
|
Qin C, Li J, Yang J, Cheng Y, Fu X. Soft Palate Dysplasia: Properties and Surgical Techniques. Plast Reconstr Surg 2024; 153:1368-1377. [PMID: 37257150 DOI: 10.1097/prs.0000000000010787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND The authors aimed to report a hitherto undescribed class of patients with the obvious phenotype of a novel soft palate dysplasia (SPD) combining unilateral soft palate hypoplasia with a fully developed uvula. The authors also aimed to investigate and evaluate the corresponding surgical approaches. METHODS Twelve patients were clinically diagnosed with SPD. Clinical examination, including radiographic tests, was performed to characterize the congenital deformity. The effectiveness of velopharyngeal closure and speech were tested preoperatively and postoperatively. RESULTS SPD was featured with velopharyngeal insufficiency, food regurgitation, and speech disorders. It was commonly manifested as structural deformities of the soft palate, tongue palatine arch, pharyngeal palatine arch, and pterygomandibular fold, but with complete uvula shape. According to radiographic analysis, in five patients, the lateral pterygoid processes were poorly developed, and other malformations were present. Velopharyngoplasty based on the unilateral posterior pharyngeal flap can well restore the velopharyngeal closure and speech intelligibility without respiration obstruction. CONCLUSIONS SPD is characterized as congenital velopharyngeal insufficiency manifested as a primary soft palate defect. It is highly associated with other physical deformities but independent of conventionally known syndromes. The cause may be an abnormal development of the pterygoid process. Unilateral velopharyngoplasty based on the posterior pharyngeal flap is a great technique to repair SPD. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, IV.
Collapse
Affiliation(s)
- Chuanqi Qin
- From the The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University
| | - Jian Li
- From the The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology
| | - Jiegang Yang
- From the The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Wuhan University
| | - Yibin Cheng
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University
| | - Xiazhou Fu
- From the The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology
| |
Collapse
|
3
|
Zaiger J, Leblebicioglu B, Meirelles L, Lu WE, Schumacher FL, Tatakis DN. Effects of extraoral storage time on autologous gingival graft early healing: A split-mouth randomized study. J Periodontal Res 2024. [PMID: 38634181 DOI: 10.1111/jre.13268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/25/2024] [Accepted: 03/30/2024] [Indexed: 04/19/2024]
Abstract
AIMS Despite the established use of palatal tissue grafts for mucogingival procedures, there are no studies on the effect of extraoral storage time on graft outcomes. This prospective split-mouth randomized experimental clinical trial aimed to assess whether gingival graft extraoral storage time affects graft healing. METHODS Standardized grafts were harvested from the palate and stored extraorally for 2 (Control) or 40 (Test) minutes before being placed at recipient beds. Intraoral scans, clinical photographs, and tissue blood perfusion were obtained preoperatively, postoperatively, and at follow-up visits (Days 2 (PO2), 3 (PO3), 7 (PO7), and 14 (PO14)). Healing Score Index (HSI) and wound fluid (WF) biomarkers (angiogenin, IL-6, IL-8 (CXCL8), IL-33, VEGF-A, and ENA-78 (CXCL5)) were also assessed. RESULTS Twenty-three participants completed all study visits. Extraoral storage time was 2.3 ± 1.1 min and 42.8 ± 3.4 min for C and T grafts, respectively (p < .0001). Recipient beds remained open for 21.4 ± 1.7 min. No graft underwent necrosis or failed to heal by PO14. Minimal volumetric changes were observed, without significant intergroup differences (p ≥ .11). Graft perfusion initially decreased post-harvesting before peaking on PO7 for both C and T grafts, with no significant intergroup differences (p ≥ .14). HSI values progressively increased, with no significant intergroup differences (p ≥ .22). WF analysis revealed detectable levels for all biomarkers tested, without significant intergroup differences (p ≥ .23). CONCLUSION Extraoral storage time of 40 min has neither statistically significant nor clinically discernible effects on autologous graft revascularization, early healing, or survival, as determined by physiological, wound healing, and molecular parameters.
Collapse
Affiliation(s)
- James Zaiger
- Division of Periodontology, College of Dentistry, The Ohio State University, Columbus, Ohio, USA
| | - Binnaz Leblebicioglu
- Division of Periodontology, College of Dentistry, The Ohio State University, Columbus, Ohio, USA
| | - Luiz Meirelles
- Division of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Columbus, Ohio, USA
| | - Wei-En Lu
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, Ohio, USA
| | - Fernanda L Schumacher
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, Ohio, USA
| | - Dimitris N Tatakis
- Division of Periodontology, College of Dentistry, The Ohio State University, Columbus, Ohio, USA
| |
Collapse
|
4
|
Santhosh Kumar S, Chacko R, Kaur A, Ibrahim G, Ye D. A Systematic Review of the Use of Intraoral Scanning for Human Identification Based on Palatal Morphology. Diagnostics (Basel) 2024; 14:531. [PMID: 38473003 DOI: 10.3390/diagnostics14050531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
A common application for intraoral scanners is the digitization of the morphology of teeth and palatal rugae. Palatal scans are most commonly required to fabricate complete dentures and immediate transitional dentures and serve as a reference point for assessing orthodontic results. However, they are also frequently included by accident, even though the main purpose of intraoral scanning is to reconstruct dentition using computer-aided manufacturing (CAM). The literature shows that the identification of disaster victims has frequently involved palatal rugae impressions. As the skull provides sound insulation, the rugae are resistant to heat, chemicals, and stress. Antemortem data might be difficult to find during a forensic inquiry, particularly in disaster victim identification cases. In contrast with DNA and fingerprints, there is a greater likelihood of having a dental record that contains palatal scans. With specialized software, the scans can be exported as open stereolithography (STL) files. Considering that a full case consumes up to about 100 MB of hard drive space, long-term storage should not be an issue compared to a plaster model. Additionally, dentists widely use online databases to exchange data for smile design, implant registration, and orthodontic purposes. This will produce a digital database that grows quickly and is readily usable for forensic investigations. The uniqueness of forensic features is frequently challenged; however, palatal morphology's unique trait could make it possible as it is characteristic of individuals as well as the most distinguishing factor. This review will highlight how rugae, palatal morphology, mirroring, superimposition, and geometrics can serve in forensic identification.
Collapse
Affiliation(s)
- Sanjana Santhosh Kumar
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY 14620, USA
| | - Rachel Chacko
- Department of Health Promotion and Behavioral Sciences, University of Texas School of Public Health, Houston, TX 77030, USA
| | - Amritpreet Kaur
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY 14620, USA
| | - Gasser Ibrahim
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY 14620, USA
| | - Dongxia Ye
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY 14620, USA
| |
Collapse
|
5
|
Hardan L, Bourgi R, Lukomska-Szymanska M, Hernández-Cabanillas JC, Zamarripa-Calderón JE, Jorquera G, Ghishan S, Cuevas-Suárez CE. Effect of scanning strategies on the accuracy of digital intraoral scanners: a meta-analysis of in vitro studies. J Adv Prosthodont 2023; 15:315-332. [PMID: 38205120 PMCID: PMC10774636 DOI: 10.4047/jap.2023.15.6.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 11/28/2023] [Accepted: 12/15/2023] [Indexed: 01/12/2024] Open
Abstract
PURPOSE This study aimed to investigate whether the accuracy of intraoral scanners is influenced by different scanning strategies in an in vitro setting, through a systematic review and meta-analysis. MATERIALS AND METHODS This review was conducted in accordance with the PRISMA 2020 standard. The following PICOS approach was used: population, tooth impressions; intervention, the use of intraoral scanners with scanning strategies different from the manufacturer's instructions; control, the use of intraoral scanners following the manufacturers' requirements; outcome, accuracy of intraoral scanners; type of studies, in vitro. A comprehensive literature search was conducted across various databases including Embase, SciELO, PubMed, Scopus, and Web of Science. The inclusion criteria were based on in vitro studies that reported the accuracy of digital impressions using intraoral scanners. Analysis was performed using Review Manager software (version 5.3.5; Cochrane Collaboration, Copenhagen, Denmark). Global comparisons were made using a standardized mean difference based on random-effect models, with a significance level of α = 0.05. RESULTS The meta-analysis included 15 articles. Digital impression accuracy significantly improved under dry conditions (P < 0.001). Moreover, trueness and precision were enhanced when artificial landmarks were used (P ≤ 0.02) and when an S-shaped pattern was followed (P ≤ 0.01). However, the type of light used did not have a significant impact on the accuracy of the digital intraoral scanners (P ≥ 0.16). CONCLUSION The accuracy of digital intraoral scanners can be enhanced by employing scanning processes using artificial landmarks and digital impressions under dry conditions.
Collapse
Affiliation(s)
- Louis Hardan
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut, Lebanon
| | - Rim Bourgi
- Department of Restorative Dentistry, School of Dentistry, Saint-Joseph University, Beirut, Lebanon
- Department of Biomaterials and Bioengineering, INSERM UMR_S 1121, University of Strasbourg, Strasbourg, France
| | | | - Juan Carlos Hernández-Cabanillas
- Health Sciences Faculty, Autonomous University of Baja California, Blvd Universitario 1000 Valle de Las Palmas, Tijuana, B.C. Mexico
| | - Juan Eliezer Zamarripa-Calderón
- Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, San Agustín Tlaxiaca, Mexico
| | - Gilbert Jorquera
- Department of Prosthodontics, Universidad de los Andes, Santiago, Chile
| | | | - Carlos Enrique Cuevas-Suárez
- Dental Materials Laboratory, Academic Area of Dentistry, Autonomous University of Hidalgo State, San Agustín Tlaxiaca, Mexico
| |
Collapse
|
6
|
Srivastava G, Padhiary SK, Mohanty N, Molinero-Mourelle P, Chebib N. Accuracy of Intraoral Scanner for Recording Completely Edentulous Arches-A Systematic Review. Dent J (Basel) 2023; 11:241. [PMID: 37886926 PMCID: PMC10605168 DOI: 10.3390/dj11100241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/02/2023] [Accepted: 10/10/2023] [Indexed: 10/28/2023] Open
Abstract
Scanning edentulous arches during complete denture fabrication is a crucial step; however, the quality of the resulting digital scan is still questionable. The purpose of this study is to systematically review studies (both clinical and in vitro) and determine whether intraoral scanners have clinically acceptable accuracy when recording completely edentulous arches for the fabrication of removable complete dentures. An electronic search in medical databases like PubMed, Scopus, and Web of Science (WOS), using a combination of relevant keywords, retrieved 334 articles. After full-text evaluation, twelve articles fulfilled the inclusion criteria for this review (eight clinical studies and four in vitro studies). A quality analysis of the included studies was carried out using the QUADAS-2 tool. The accuracy values varied between different intraoral scanners. Different regions of the edentulous arches showed differences in trueness and precision values in both in vitro and clinical studies. Peripheral borders, the inner seal, and poorly traceable structures like the soft palate showed maximum discrepancies. The accuracy of intraoral scanners in recording clear anatomic landmarks like hard tissues with attached mucosa was comparable to conventional edentulous arch impressions. However, higher discrepancies were recorded when digitizing mobile and poorly traceable structures. Intraoral scanners can be used to digitize denture-bearing areas, but the interpretation of the peripheral border and the soft palate should be carefully carried out.
Collapse
Affiliation(s)
- Gunjan Srivastava
- Department of Prosthodontics, Institute of Dental Sciences, Siksha ‘O’ Anusandhan, Deemed To Be University, Bhubaneswar 751003, Odisha, India;
| | - Subrat Kumar Padhiary
- Department of Oral and Maxillofacial Surgery, Institute of Dental Sciences, Siksha ‘O’ Anusandhan, Deemed To Be University, Bhubaneswar 751003, Odisha, India;
| | - Neeta Mohanty
- Department of Oral Pathology and Microbiology, Institute of Dental Sciences, Siksha ‘O’ Anusandhan, Deemed To Be University, Bhubaneswar 751003, Odisha, India;
| | - Pedro Molinero-Mourelle
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, 3010 Bern, Switzerland;
| | - Najla Chebib
- Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, 1205 Geneva, Switzerland
| |
Collapse
|
7
|
Angelone F, Ponsiglione AM, Ricciardi C, Cesarelli G, Sansone M, Amato F. Diagnostic Applications of Intraoral Scanners: A Systematic Review. J Imaging 2023; 9:134. [PMID: 37504811 PMCID: PMC10381333 DOI: 10.3390/jimaging9070134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/08/2023] [Accepted: 06/19/2023] [Indexed: 07/29/2023] Open
Abstract
In addition to their recognized value for obtaining 3D digital dental models, intraoral scanners (IOSs) have recently been proven to be promising tools for oral health diagnostics. In this work, the most recent literature on IOSs was reviewed with a focus on their applications as detection systems of oral cavity pathologies. Those applications of IOSs falling in the general area of detection systems for oral health diagnostics (e.g., caries, dental wear, periodontal diseases, oral cancer) were included, while excluding those works mainly focused on 3D dental model reconstruction for implantology, orthodontics, or prosthodontics. Three major scientific databases, namely Scopus, PubMed, and Web of Science, were searched and explored by three independent reviewers. The synthesis and analysis of the studies was carried out by considering the type and technical features of the IOS, the study objectives, and the specific diagnostic applications. From the synthesis of the twenty-five included studies, the main diagnostic fields where IOS technology applies were highlighted, ranging from the detection of tooth wear and caries to the diagnosis of plaques, periodontal defects, and other complications. This shows how additional diagnostic information can be obtained by combining the IOS technology with other radiographic techniques. Despite some promising results, the clinical evidence regarding the use of IOSs as oral health probes is still limited, and further efforts are needed to validate the diagnostic potential of IOSs over conventional tools.
Collapse
Affiliation(s)
- Francesca Angelone
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy
| | - Alfonso Maria Ponsiglione
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy
| | - Carlo Ricciardi
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy
| | - Giuseppe Cesarelli
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy
| | - Mario Sansone
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy
| | - Francesco Amato
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy
| |
Collapse
|
8
|
Mancini L, Barootchi S, Thoma DS, Jung RE, Gallucci GO, Wang HL, Tavelli L. The peri-implant mucosa color: A systematic appraisal of methods for its assessment and clinical significance. Clin Implant Dent Relat Res 2023; 25:224-240. [PMID: 36646440 DOI: 10.1111/cid.13180] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/21/2022] [Accepted: 12/28/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND Peri-implant mucosa color (PMC) seems to be one of the main parameters affecting the esthetic outcome of implant therapy. However, more emphasis should be given to its assessment and reporting. PURPOSE To describe the available evidence on methods to assess and report the color of the peri-implant mucosa (PMC) and the respective clinical relevance. MATERIAL AND METHODS A comprehensive electronic and manual search was performed to identify clinical studies reporting on PMC. RESULTS A total of 121 studies were included. PMC was evaluated at the time of the follow-up visit (chairside) in 45.5% studies. PMC assessment was performed qualitatively, by comparing PMC with adjacent and/or contralateral gingiva (78.6%) or quantitatively, using spectrophotometry (20.7%) or a software on clinical photographs (0.8%). The most performed method to assess PMC was through esthetic indices (76.9%), either at the time of the follow-up visit (chairside) or at later time point using photographs. Quantitative reporting of PMC included averages of points from esthetic indices or color differences to natural gingiva expressed with the CIELAB color system. PMC assessment allowed describing color discrepancies compared to natural gingiva, evaluating color changes over time, and comparing the outcomes of different treatment modalities. PMC assessment through spectrophotometry was additionally utilized to assess the role of mucosal thickness (MT) on PMC. CONCLUSIONS Various methods for PMC assessment and reporting were described, including visual assessment, mainly through esthetic indices, and spectrophotometry. PMC evaluation has allowed to demonstrate the factors affecting the color of the peri-implant soft tissue, such as the type of abutment/restoration, MT, and soft tissue augmentation.
Collapse
Affiliation(s)
- Leonardo Mancini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy.,Clinic of Reconstructive Dentistry, University of Zurich, Zurich, Switzerland.,Center for Clinical Research and Evidence Synthesis in Oral Tissue Regeneration (CRITERION), Boston, Massachusetts, USA.,Department of Oral Medicine, Infection, and Immunity, Division of Periodontology, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Shayan Barootchi
- Center for Clinical Research and Evidence Synthesis in Oral Tissue Regeneration (CRITERION), Boston, Massachusetts, USA.,Department of Periodontics & Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Daniel S Thoma
- Clinic of Reconstructive Dentistry, University of Zurich, Zurich, Switzerland.,Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, South Korea
| | - Ronald E Jung
- Clinic of Reconstructive Dentistry, University of Zurich, Zurich, Switzerland
| | - German O Gallucci
- Department of Restorative Dentistry and Biomaterial Science, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Hom-Lay Wang
- Department of Periodontics & Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Lorenzo Tavelli
- Center for Clinical Research and Evidence Synthesis in Oral Tissue Regeneration (CRITERION), Boston, Massachusetts, USA.,Department of Oral Medicine, Infection, and Immunity, Division of Periodontology, Harvard School of Dental Medicine, Boston, Massachusetts, USA.,Department of Periodontics & Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| |
Collapse
|
9
|
Salivary film thickness and MUC5B levels at various intra-oral surfaces. Clin Oral Investig 2023; 27:859-869. [PMID: 35941397 PMCID: PMC9889518 DOI: 10.1007/s00784-022-04626-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 07/13/2022] [Indexed: 02/04/2023]
Abstract
OBJECTIVES In this study, we investigated the salivary film thickness and the MUC5B levels at various intra-oral locations in healthy volunteers, with a focus on the palate. Besides, measurements of the palatal surface area were included to explore the possible relationships between the palatal surface area and the palatal salivary film and MUC5B levels. MATERIALS AND METHODS The salivary film thickness was determined using filter strips, which were pressed to the mucosal surfaces of five different intra-oral locations; conductance was then analysed using a Periotron. After elution of the strips, the MUC5B levels at various intra-oral locations were determined using ELISA. The palatal surface area was measured using an intra-oral scanner. The surface area was subsequently calculated using the software. RESULTS The anterior tongue had the thickest salivary film and also the highest levels of MUC5B, while the anterior palate had the thinnest salivary film and lowest MUC5B levels. There was no association between the palatal surface area and the salivary film thickness of the palate. CONCLUSION The salivary film and MUC5B levels are unequally distributed over the intra-oral regions of the soft tissues. The lack of association between the palatal surface area and the salivary film thickness indicates that a larger surface area is not associated with a relative thinner palatal salivary film. CLINICAL RELEVANCE The results of the current study increase our understanding of saliva distribution in the oral cavity and could be used as reference values for future studies.
Collapse
|
10
|
Deferm JT, Baan F, Nijsink J, Verhamme L, Maal T, Meijer G. Intraoral scanning of the edentulous jaw without additional markers: An in vivo validation study on scanning precision and registration of an intraoral scan with a cone-beam computed tomography scan. Imaging Sci Dent 2023; 53:21-26. [PMID: 37006789 PMCID: PMC10060752 DOI: 10.5624/isd.20220131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 02/05/2023] Open
Abstract
Purpose A fully digital approach to oral prosthodontic rehabilitation requires the possibility of combining (i.e., registering) digital documentation from different sources. This becomes more complex in an edentulous jaw, as fixed dental markers to perform reliable registration are lacking. This validation study aimed to evaluate the reproducibility of 1) intraoral scanning and 2) soft tissue-based registration of an intraoral scan with a cone-beam computed tomography (CBCT) scan for a fully edentulous upper jaw. Materials and Methods Two observers independently performed intraoral scans of the upper jaw in 14 fully edentulous patients. The palatal vault of both surface models was aligned, and the inter-observer variability was assessed by calculating the mean inter-surface distance at the level of the alveolar crest. Additionally, a CBCT scan of all patients was obtained and a soft tissue surface model was generated using patient-specific gray values. This CBCT soft tissue model was registered with the intraoral scans of both observers, and the intraclass correlation coefficient (ICC) was calculated to evaluate the reproducibility of the registration method. Results The mean inter-observer deviation when performing an intraoral scan of the fully edentulous upper jaw was 0.10 ± 0.09 mm. The inter-observer agreement for the soft tissue-based registration method was excellent (ICC=0.94; 95% confidence interval, 0.81-0.98). Conclusion Even when teeth are lacking, intraoral scanning of the jaw and soft tissue-based registration of an intraoral scan with a CBCT scan can be performed with a high degree of precision.
Collapse
Affiliation(s)
- Julie Tilly Deferm
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Frank Baan
- 3D Laboratory, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Johan Nijsink
- 3D Laboratory, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
- Department of Radiology and Nuclear Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Luc Verhamme
- 3D Laboratory, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Thomas Maal
- 3D Laboratory, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Gert Meijer
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
- Department of Implantology and Periodontology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| |
Collapse
|
11
|
Assy Z, Jager DHJ, Brand HS, Bikker FJ. Correlations of palatal surface area with anthropometric dimensions of the head and face. SURGICAL AND RADIOLOGIC ANATOMY : SRA 2022; 44:1261-1267. [PMID: 36056237 PMCID: PMC9492607 DOI: 10.1007/s00276-022-03008-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/14/2022] [Indexed: 11/26/2022]
Abstract
Purpose Saliva distribution over the palatal surface plays an important role in the perception of dry mouth. It is envisaged that non-invasive estimation of the palatal surface area by anthropometric measurements of the head and face can be useful in the assessment of oral dryness. For this purpose, the relationship between the palatal surface area and anthropometric measurements of the head and face was investigated. Methods The palatal surface was measured in 51 healthy volunteers using an intra-oral scanner. The distances between anthropometric landmarks of the head and face were determined using an anatomical sliding caliper. Correlations between the palatal surface area and the anthropometric landmarks were investigated. Results The median palatal surface area for the total study population was found to be 2120.6 mm2. Virtually, all anthropometric measurements showed significant differences between females and males. Various head and face measurements had a significant correlation with the palatal surface area. However, these correlations disappeared when the participants were stratified based on their sex, with the exception of mandibular length and palatal width in females. Conclusion The surface area of the palate correlates with nearly all anthropometric measurements of the head and face included in this study. Yet, the clinical applicability seems limited to females.
Collapse
Affiliation(s)
- Z Assy
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands.
| | - D H J Jager
- Department of Maxillofacial Surgery and Oral Pathology, Amsterdam UMC and Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam, Amsterdam Institute for Infection and Immunity Amsterdam, Amsterdam, The Netherlands
| | - H S Brand
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
| | - F J Bikker
- Department of Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and VU University Amsterdam, Room 12N-37, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, The Netherlands
| |
Collapse
|
12
|
A Digital Way for Fabricating a Resin-Bonded Fixed Partial Denture Combined with Periodontal Splint in the Mandibular Anterior Region. BIOMED RESEARCH INTERNATIONAL 2022; 2022:6254551. [PMID: 36072474 PMCID: PMC9441362 DOI: 10.1155/2022/6254551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 08/03/2022] [Accepted: 08/11/2022] [Indexed: 11/30/2022]
Abstract
Teeth loosening are caused by insufficient supporting tissue, inflammation of periodontal tissue, or occlusal trauma, which is one of the main clinical symptoms of periodontitis. A digital technique for fabricating resin-bonded splinting fixed partial dentures (S-FPDs) is presented. It restores the missing mandible anterior teeth and splints the adjacent periodontally mobile teeth of the patient at the same time. The S-FPDs is designed and fabricated by computer-aided design and computer-aided manufacturing (CAD/CAM) technology with flexible PMMA material. The workflow is straightforward, convenient, and accurate. Meanwhile, the restoration can meet the esthetic requirements and help with the stability of adjacent loosening natural teeth spontaneously. It could be considered a medium-term provisional restorative treatment option, but further controlled investigations still be needed.
Collapse
|
13
|
Plaster Casts vs. Intraoral Scans: Do Different Methods of Determining the Final Occlusion Affect the Simulated Outcome in Orthognathic Surgery? J Pers Med 2022; 12:jpm12081288. [PMID: 36013237 PMCID: PMC9409745 DOI: 10.3390/jpm12081288] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 11/16/2022] Open
Abstract
A virtual occlusal adjustment in orthognathic surgery has many advantages; however, the haptic information offered by plaster casts is missing when using intraoral scans. Feeling the interferences may be helpful in defining the best possible occlusion. Whether the use of a virtual occlusal adjustment instead of the conventional approach has a significant effect on the postsurgical position of the jaws is a question that remains unanswered. This study compares a virtual method to the conventional method of defining the final occlusion. Twenty-five orthognathic patients were included. Bimaxillary and single-jaw orthognathic surgery (mandible only) was simulated. The two methods were compared regarding discrepancies in the simulated postsurgical position of the mandible, measured three-dimensionally using MeshLab (MeshLab 2020.12 3D). An analysis using SPSS revealed no significant differences between the tested methods (p-values: 0.580 to 0.713). The mean absolute discrepancies ranged from 0.14 mm to 0.72 mm, laying within the scope of the clinically acceptable inaccuracies of an osteosynthesis in orthognathic surgery. The lack of haptic information in virtual planning had no relevant influence on the definition of the final occlusion and the simulated postsurgical outcome. However, in individual cases, plaster models might still be helpful in finding the adequate occlusion, especially in the sagittal dimension and in cases of patients with an anterior open bite, but this remains to be tested.
Collapse
|
14
|
Dimensional Changes in Extraction Sockets: A Pilot Study Evaluating Differences between Digital and Conventional Impressions. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12157662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Traditionally, soft tissue records are obtained by dental impression using impression materials; however, accurately recording the soft tissue immediately after tooth extraction is difficult. We measured the tissue changes after tooth extraction and compared two impression modalities (digital versus conventional) by measuring the changes at the soft tissue level. In this case, 15 patients with 17 single extraction sites were enrolled. Conventional impression (CI) using vinyl polysiloxane material and digital impression (DI) using an intraoral scanner were prepared immediately after extraction (T0) and at 2 months post-extraction (T1). Standard tessellation language files were generated for superimposition of the tissue surface. The tissue changes and discrepancies were measured on the superimposed surfaces. The differences in the changes and the discrepancy between the tissue surface impression at each time point were compared. At all measuring levels, the total tissue change was significantly different between groups DI and CI (p < 0.05). DI exhibited a more pronounced tissue surface at both time points, and the total discrepancy was statistically significantly greater at T0 than at T1 (p < 0.05). The values from DI and CI demonstrated small but significantly different for the same study material. The interpretation of such differences may depend on the clinical situation or scientific value.
Collapse
|
15
|
Kuralt M, Cmok Kučič A, Gašperšič R, Grošelj J, Knez M, Fidler A. Gingival shape analysis using surface curvature estimation of the intraoral scans. BMC Oral Health 2022; 22:283. [PMID: 35820843 PMCID: PMC9275066 DOI: 10.1186/s12903-022-02322-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 07/05/2022] [Indexed: 11/15/2022] Open
Abstract
Background Despite many advances in dentistry, no objective and quantitative method is available to evaluate gingival shape. The surface curvature of the optical scans represents an unexploited possibility. The present study aimed to test surface curvature estimation of intraoral scans for objective evaluation of gingival shape. Methods The method consists of four main steps, i.e., optical scanning, surface curvature estimation, region of interest (ROI) definition, and gingival shape analysis. Six different curvature measures and three different diameters were tested for surface curvature estimation on central (n = 78) and interdental ROI (n = 88) of patients with advanced periodontitis to quantify gingiva with a novel gingival shape parameter (GS). The reproducibility was evaluated by repeating the method on two consecutive intraoral scans obtained with a scan-rescan process of the same patient at the same time point (n = 8). Results Minimum and mean curvature measures computed at 2 mm diameter seem optimal GS to quantify shape at central and interdental ROI, respectively. The mean (and standard deviation) of the GS was 0.33 ± 0.07 and 0.19 ± 0.09 for central ROI using minimum, and interdental ROI using mean curvature measure, respectively, computed at a diameter of 2 mm. The method’s reproducibility evaluated on scan-rescan models for the above-mentioned ROI and curvature measures was 0.02 and 0.01, respectively. Conclusions Surface curvature estimation of the intraoral optical scans presents a precise and highly reproducible method for the objective gingival shape quantification enabling the detection of subtle changes. A careful selection of parameters for surface curvature estimation and curvature measures is required. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-022-02322-y.
Collapse
Affiliation(s)
- Marko Kuralt
- Department of Restorative Dentistry and Endodontics, University Medical Centre Ljubljana, Hrvatski trg 6, 1000, Ljubljana, Slovenia. .,Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
| | | | - Rok Gašperšič
- Department of Oral Medicine and Periodontology, University Medical Centre Ljubljana, Ljubljana, Slovenia.,Department of Oral Medicine and Periodontology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Jan Grošelj
- Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia
| | - Marjeta Knez
- Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, Slovenia
| | - Aleš Fidler
- Department of Restorative Dentistry and Endodontics, University Medical Centre Ljubljana, Hrvatski trg 6, 1000, Ljubljana, Slovenia.,Department of Endodontics and Operative Dentistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| |
Collapse
|
16
|
Osman R, Alharbi N. Does the palatal vault form have an influence on the scan time and accuracy of intraoral scans of completely edentulous arches? An in-vitro study. J Adv Prosthodont 2022; 14:294-304. [DOI: 10.4047/jap.2022.14.5.294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 08/01/2022] [Accepted: 08/23/2022] [Indexed: 11/10/2022] Open
Affiliation(s)
- Reham Osman
- Prosthodontics Department, Faculty of Dentistry, Cairo University, Giza, Egypt
| | - Nawal Alharbi
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| |
Collapse
|
17
|
Tabatabaian F, Beyabanaki E, Alirezaei P, Epakchi S. Visual and digital tooth shade selection methods, related effective factors and conditions, and their accuracy and precision: A literature review. J ESTHET RESTOR DENT 2021; 33:1084-1104. [PMID: 34498789 DOI: 10.1111/jerd.12816] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/09/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Despite developments of dental shade selection methods, shade selection is still a challenge affecting esthetic outcomes. The purpose of this review was to discuss visual and digital shade taking methods, related effective factors and conditions, and their accuracy and precision to find out the most accurate, precise shade selection method available in dentistry. OVERVIEW The key terms of accuracy, background, ceramic, color, colorimeter, color analysis, color science, color measurement, color measuring instrument, color matching, composite resin, dental/tooth shade guide, digital camera, esthetics, imaging, imaging application/program/ software, intraoral scanner, light source, photography, precision, shade, shade matching/ determination/prediction/reproduction/selection, shade taking device, spectrophotometer, spectrophotometry, tooth color measurement, tooth color/shade, and visual perception were used separately and jointly to detect related English-language articles published between January 1, 1985, and January 1, 2021. Electronic/non-electronic searches of Google Scholar/PubMed/Scopus/Web of Science were accomplished. Consequently, 249 articles were considered. Accordingly, the digital methods show higher accuracy and precision compared to the visual methods while requiring to be enhanced regarding accuracy to achieve ideal shade taking results. CONCLUSIONS Dental spectrophotometers provide the highest overall accuracy and precision among different shade selection methods while needing clinical setting to control related effective factors/conditions and technological improvement to perform optimally. CLINICAL SIGNIFICANCE Different factors can affect the accuracy and precision of tooth shade selection methods and devices. The understanding of these effective factors may lead to a standard shade taking protocol using accurate, precise methods and devices.
Collapse
Affiliation(s)
- Farhad Tabatabaian
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elaheh Beyabanaki
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Parisa Alirezaei
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saied Epakchi
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
18
|
The Chairside Periodontal Diagnostic Toolkit: Past, Present, and Future. Diagnostics (Basel) 2021; 11:diagnostics11060932. [PMID: 34067332 PMCID: PMC8224643 DOI: 10.3390/diagnostics11060932] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/07/2021] [Accepted: 05/19/2021] [Indexed: 12/22/2022] Open
Abstract
Periodontal diseases comprise a group of globally prevalent, chronic oral inflammatory conditions caused by microbial dysbiosis and the host immune response. These diseases specifically affect the tooth-supporting tissues (i.e., the periodontium) but are also known to contribute to systemic inflammation. If left untreated, periodontal diseases can ultimately progress to tooth loss, lead to compromised oral function, and negatively impact the overall quality of life. Therefore, it is important for the clinician to accurately diagnose these diseases both early and accurately chairside. Currently, the staging and grading of periodontal diseases are based on recording medical and dental histories, thorough oral examination, and multiple clinical and radiographic analyses of the periodontium. There have been numerous attempts to improve, automate, and digitize the collection of this information with varied success. Recent studies focused on the subgingival microbiome and the host immune response suggest there is an untapped potential for non-invasive oral sampling to assist clinicians in the chairside diagnosis and, potentially, prognosis. Here, we review the available toolkit available for diagnosing periodontal diseases, discuss commercially available options, and highlight the need for collaborative research initiatives and state-of-the-art technology development across disciplines to overcome the challenges of rapid periodontal disease diagnosis.
Collapse
|
19
|
Deferm JT, Nijsink J, Baan F, Verhamme L, Meijer G, Maal T. Soft tissue-based registration of intraoral scan with cone beam computed tomography scan. Int J Oral Maxillofac Surg 2021; 51:263-268. [PMID: 33933335 DOI: 10.1016/j.ijom.2021.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 01/28/2021] [Accepted: 04/06/2021] [Indexed: 10/21/2022]
Abstract
The aim of this study was to evaluate a novel soft tissue-based method to register an intraoral scan (IOS) with a cone beam computed tomography (CBCT) scan. IOS and CBCT data were obtained from eight dentate patients (mean age 21±2 years; three male, five female) and 14 fully edentulous patients (mean age 56±9 years; eight male, six female). An algorithm was developed to create a soft tissue model of the CBCT scan, which allowed a soft tissue-based registration to be performed with the IOS. First, validation was performed on dentate jaws with registration of the palatal mucosal surface and accuracy evaluation at the level of the teeth. Second, fully edentulous jaws were registered using both the palatal and alveolar crest mucosal surfaces. Distance maps were created to measure the method accuracy. The mean registration error was 0.49±0.26mm for the dentate jaws. Registration of the fully edentulous jaws had a mean error of 0.16±0.08mm at the palate and 0.16±0.05mm at the alveolar crest. In conclusion, the high accuracy of this registration method may allow the digital workflow to be optimized when no teeth are available to perform a regular registration procedure.
Collapse
Affiliation(s)
- J T Deferm
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands.
| | - J Nijsink
- 3D Laboratory, Department of Radiology ad Nuclear Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| | - F Baan
- 3D Laboratory, Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| | - L Verhamme
- 3D Laboratory, Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| | - G Meijer
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands; Department of Implantology and Periodontology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| | - T Maal
- 3D Laboratory, Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| |
Collapse
|
20
|
Rasaie V, Abduo J, Hashemi S. Accuracy of Intraoral Scanners for Recording the Denture Bearing Areas: A Systematic Review. J Prosthodont 2021; 30:520-539. [PMID: 33554361 DOI: 10.1111/jopr.13345] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
PURPOSE To systematically review clinical and laboratory studies that investigated the accuracy of intraoral scanners in recording denture bearing areas. MATERIALS AND METHODS Electronic and manual searches were conducted to identify all the available clinical and laboratory studies reporting the accuracy of digital impressions for recording denture related soft tissues. After the application of predetermined inclusion and exclusion criteria, the final list of articles was reviewed to meet the objective of this study. RESULTS The inclusion criteria were met by 18 studies out of which 8 were clinical and the rest were laboratory investigations. The eligible studies assessed the accuracy of intraoral scanners in recording both the denture supporting structures and the peripheral mobile tissues. The accuracy results were different among the various intraoral scanners. Likewise, the effect of several influencing factors, such as artificial markers, scanner head size, scanning strategy, and the operator's experience, were evaluated. CONCLUSION While the accuracy of intraoral scanners was comparable to the conventional techniques in recording bony structures with attached mucosa, they were not capable of accurately registering the mobile tissues. In addition, factors such as presence of a marker, larger scanner head size and specific scanning techniques appeared to improve the accuracy of the digital impression.
Collapse
Affiliation(s)
- Vanya Rasaie
- Department of Prosthodontics, Dental School, Ilam University of Medical Sciences, Ilam, Iran
| | - Jaafar Abduo
- Department of Prosthodontics, Melbourne Dental School, Melbourne University, Melbourne, Australia
| | - Saloumeh Hashemi
- Department of Prosthodontics, Melbourne Dental School, Melbourne University, Melbourne, Australia
| |
Collapse
|
21
|
3D Scanners in Orthodontics-Current Knowledge and Future Perspectives-A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18031121. [PMID: 33513981 PMCID: PMC7908072 DOI: 10.3390/ijerph18031121] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/19/2021] [Accepted: 01/25/2021] [Indexed: 11/16/2022]
Abstract
Background: Nowadays the use of intraoral scanners has become a routine practice in orthodontics. It allows the introduction of many treatment innovations. One should consider to what extent intraoral scanners have influenced the everyday orthodontic practice and in what direction should the further research in this field be conducted. This study is aimed to systematically review and synthesize available controlled trials investigating the accuracy and efficacy of intraoral scanners for orthodontic purpose to provide clinically useful information and to direct further research in this field. Methods: A literature search of free text and MeSH terms was performed by using MedLine (PubMed), Scopus, Web of Science and Embase. The search engines were used to find studies on application of intraoral scanners in orthodontics (from 1950 to 30 September 2020). The following keywords were used: “intraoral scanners AND efficiency AND accuracy AND orthodontics”. Results: The number of potential identified articles was 71, including 61 from PubMed, two from Scopus, three from Web of Science and five from Embase. After removal of duplicates, 67 full-text articles were analyzed for inclusion criteria, 16 of them were selected and finally included in the qualitative synthesis. Conclusions: There are plenty of data available on accuracy and efficacy of different scanners. Scanners of the same generation from different manufacturers have almost identical accuracy. This is the reason why future similar research will not introduce much to the orthodontics. The challenge for the coming years is to find new applications of digital impressions in the orthodontic practice.
Collapse
|
22
|
Comparison of the Accuracy of 3D Images Obtained fromDifferent Types of Scanners: A Systematic Review. JOURNAL OF HEALTHCARE ENGINEERING 2021; 2020:8854204. [PMID: 33414902 PMCID: PMC7752290 DOI: 10.1155/2020/8854204] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/24/2020] [Accepted: 12/02/2020] [Indexed: 12/30/2022]
Abstract
Introduction The purpose of this systematic review was to compare the accuracy of the three-dimensional images among different scanners, scanning techniques, and substrates. Materials and methods. Electronic databases (PubMed and Elsevier) were searched until March 2020. The systematic search was performed to identify the most precise method of obtaining a 3D image of the dentition. Results Thirteen articles out of 221, considering the accuracy of 3D images, were selected. The main factors that are considered to have an influence on the precision are substrate type in the oral cavity, experience of the scanner's operator, direct vs. indirect scanning, and the reproducibility of the procedure. Conclusion Substrate type does have an impact on the overall accuracy of intraoral scans where dentin has the most and enamel the least accurately recorded dental structure. Experience of the operator has an influence on the accuracy, where more experienced operators and smaller scan sizes are made for more accurate scans. A conventional impression technique in a full-arch image provided the lowest deviation. The reproducibility of direct scanning was comparable to indirect scanning although a slight difference was noticeable (0.02 mm).
Collapse
|
23
|
Baan F, van Meggelen EM, Verhulst AC, Bruggink R, Xi T, Maal TJJ. Virtual occlusion in orthognathic surgery. Int J Oral Maxillofac Surg 2020; 50:1219-1225. [PMID: 33358521 DOI: 10.1016/j.ijom.2020.12.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 10/08/2020] [Accepted: 12/09/2020] [Indexed: 11/25/2022]
Abstract
The aim of this retrospective study was to determine whether a virtually created occlusion is as accurate as a conventionally created occlusion. Seventeen orthognathic patients were included in the study, which was conducted in a university clinic. Plaster cast models were obtained and digitized. Two experienced observers created the conventional (gold standard) and virtual occlusion to assess inter-observer variability. One observer created the conventional and virtual occlusion a second time to assess the intra-observer variability. The criterion for accepting the virtual occlusion was that the difference between the gold standard and the virtual occlusion was not larger than the intra-observer variability for the gold standard. A non-parametric Kruskal-Wallis H test was performed to detect statistically significant differences between the intra- and inter-observer groups for both the conventional and virtual occlusion. No statistically significant differences were found between the different groups. The difference between the conventional and virtual occlusion group was 0.20mm larger than the intra-observer variability of the gold standard. The virtual occlusion tool presented here can be utilized in daily clinical practice and makes the use of physical dental models redundant.
Collapse
Affiliation(s)
- F Baan
- Radboudumc 3DLab The Netherlands, Radboud University Medical Centre, Radboud Institute for Health Sciences, Nijmegen, The Netherlands; Department of Oral and Maxillofacial Surgery, Radboud University Medical Centre, Nijmegen, The Netherlands.
| | - E M van Meggelen
- Department of Oral and Maxillofacial Surgery, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - A C Verhulst
- Radboudumc 3DLab The Netherlands, Radboud University Medical Centre, Radboud Institute for Health Sciences, Nijmegen, The Netherlands; Department of Oral and Maxillofacial Surgery, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - R Bruggink
- Radboudumc 3DLab The Netherlands, Radboud University Medical Centre, Radboud Institute for Health Sciences, Nijmegen, The Netherlands; Department of Oral and Maxillofacial Surgery, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - T Xi
- Department of Oral and Maxillofacial Surgery, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - T J J Maal
- Radboudumc 3DLab The Netherlands, Radboud University Medical Centre, Radboud Institute for Health Sciences, Nijmegen, The Netherlands; Department of Oral and Maxillofacial Surgery, Radboud University Medical Centre, Nijmegen, The Netherlands
| |
Collapse
|
24
|
Zhang J, Huang Z, Cai Y, Luan Q. Digital assessment of gingiva morphological changes and related factors after initial periodontal therapy. J Oral Sci 2020; 63:59-64. [PMID: 33229796 DOI: 10.2334/josnusd.20-0157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
PURPOSE To establish a digital assessment method for changes in gingiva morphology following initial periodontal therapy. METHODS Ten periodontal-healthy participants were selected, and digital models obtained by intraoral scanning and digitizing conventional impressions. Using dentition as a reference, best fit alignment between digital models was carried out. Root mean square (RMS) was calculated to evaluate differences in models, and gingival volume discrepancy (GVD) was calculated after combining separated models. Trueness of intraoral scanning used on the gingiva was evaluated using RMS and GVD between intraoral and conventional models with conventional models as references; precision was evaluated among different intraoral models of one participant. Twenty-three periodontitis-affected participants underwent intraoral scanning immediately after supragingival scaling and two weeks after initial periodontal therapy. The GVD of gingiva between two digital models was calculated to assess gingival changes and related factors after therapy. RESULTS Trueness of intraoral scanning used on the entire gingiva was 83.65 ± 14.43 μm; precision was 70.71 ± 25.58 μm; GVD error measured by digital models was 15.28 ± 10.00 mm³. Gingival volume in periodontitis-affected participants decreased 104.04-1155.09 mm³ after therapy. Probing depth, bleeding index, and keratinized gingival width positively correlated with changes in gingival volume. CONCLUSION Intraoral scanning can be recommended as a method of evaluating morphological changes in gingiva.
Collapse
Affiliation(s)
- Jingran Zhang
- Department of Periodontology, Peking University School and Hospital of Stomatology
| | - Zhen Huang
- Department of Periodontology, Peking University School and Hospital of Stomatology
| | - Yu Cai
- Department of Periodontology, Peking University School and Hospital of Stomatology
| | - Qingxian Luan
- Department of Periodontology, Peking University School and Hospital of Stomatology
| |
Collapse
|
25
|
Revilla-León M, Methani MM, Özcan M. Impact of the ambient light illuminance conditions on the shade matching capabilities of an intraoral scanner. J ESTHET RESTOR DENT 2020; 33:906-912. [PMID: 32959520 DOI: 10.1111/jerd.12662] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/09/2020] [Accepted: 09/09/2020] [Indexed: 11/30/2022]
Abstract
PURPOSE To compare the shade matching capabilities between an intraoral scanner (IOS) and a spectrophotometer under different ambient light illuminance conditions. MATERIAL AND METHODS The shade of three teeth of a patient was obtained using an IOS (IOS group) (TRIOS 3; 3Shape) and a spectrophotometer (DS group) (EasyShade V; Vita Zahnfabrik) at 4 ambient illuminances: 10000-, 1000-, 500-, and 0-lx. Ten shade measurements were documented using Vita Classical and 3D-Master guides per tooth at each lighting condition. Data was analyzed using the Kruskal-Wallis and Mann Whitney U tests (α = .05). RESULTS Significant shade discrepancies were obtained between the groups in different lighting conditions (P < .05). The IOS group presented significant shade discrepancies in different lighting conditions when evaluated using either shade guide, with lower variation under the 0-lx condition. However, the DS group did not present significant shade discrepancies among the different lighting conditions with either shade guide, except for the maxillary lateral incisor measured under 10 000-lx condition using the 3D-Master guide. CONCLUSIONS Lighting conditions influenced the shade matching competency of an IOS. The IOS tested obtained high variation in the different lighting conditions evaluated and provided a lower shade value than the spectrophotometer. The spectrophotometer revealed high consistency amongst the various lighting conditions evaluated. CLINICAL IMPLICATIONS Ambient light illuminance conditions can impact the shade matching capabilities of IOSs. The results of this investigation suggest the use of a supplementary instrumental method for assessment of tooth shade.
Collapse
Affiliation(s)
- Marta Revilla-León
- Assistant Professor and Assistant Program Director AEGD, Comprehensive Dentistry Department, College of Dentistry, Texas A&M University, Dallas, TX; Affiliate Faculty Graduate Prosthodontics, Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, WA; and Researcher at Revilla Research Center, Madrid, Spain
| | | | - Mutlu Özcan
- Professor and Head, Division of Dental Biomaterials, Center for Dental and Oral Medicine, University of Zürich, Zürich, Switzerland
| |
Collapse
|
26
|
de Gouyon Matignon de Pontouraude MA, Von den Hoff JW, Baan F, Bruggink R, Bloemen M, Bronkhorst EM, Ongkosuwito EM. Highly variable rate of orthodontic tooth movement measured by a novel 3D method correlates with gingival inflammation. Clin Oral Investig 2020; 25:1945-1952. [PMID: 32809076 PMCID: PMC7966628 DOI: 10.1007/s00784-020-03502-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 08/05/2020] [Indexed: 11/30/2022]
Abstract
Objectives Individual orthodontic treatment duration is hard to predict. Individual biological factors are amongst factors influencing individual rate of orthodontically induced tooth movement (OTM). The study aim is to determine the rate of OTM by a novel 3D method and investigate parameters that may predict the rate of tooth movement. Materials and methods In this prospective cohort study, rate of OTM was determined from 90 three-dimensional intra-oral scans in 15 patients (aged 12–15) undergoing orthodontic treatment. For each patient, intra-oral scans were taken every week for up to 6 weeks (T0–T5). The teeth were segmented from the scans and the scans were superimposed on the palatal rugae. The rate of OTM was calculated for each tooth. Other parameters were gingival inflammation, contact-point displacement and the biological markers, matrix metalloproteinases (MMP), MMP-9 and MMP-2 in gingival crevicular fluid (GCF). Results Our study showed a high variation in the rate of OTM, varying from 0.15 to 1.24 mm/week. Teeth in the anterior segment tended to move more compared with the posterior segment. The contact point displacement and gingival inflammation varied greatly amongst the patients. The MMPs measured did not correlate with tooth movement. However, the gingival inflammation index showed a significant correlation with OTM. Future studies should include other biological markers related to bone-remodeling. Conclusion This novel and efficient 3D method is suitable for measuring OTM and showed large individual variation in rate of OTM. Clinical relevance Patients show different rates of OTM. The rate of OTM in an individual patient can provide guidance in timing of follow-up appointments.
Collapse
Affiliation(s)
| | - Johannes W Von den Hoff
- Department of Dentistry, section of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Frank Baan
- Department of Dentistry, section of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
- 3D Lab, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Robin Bruggink
- Department of Dentistry, section of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
- 3D Lab, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Marjon Bloemen
- Department of Dentistry, section of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Ewald M Bronkhorst
- Department of Dentistry, section of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Edwin M Ongkosuwito
- Department of Dentistry, section of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
| |
Collapse
|
27
|
Deferm JT, Baan F, Schreurs R, Willaert R, Maal T, Meijer G. Digital surface scanning in flap perfusion. Int J Oral Maxillofac Surg 2020; 50:38-42. [PMID: 32593512 DOI: 10.1016/j.ijom.2020.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 04/05/2020] [Accepted: 05/21/2020] [Indexed: 10/24/2022]
Abstract
Monitoring vascular perfusion of transferred tissue is essential in reconstructive surgery to recognize early flap failure. The aim of this study was to evaluate the ability of a digital surface scanner to detect vascular perfusion disorders through the monitoring of skin colour changes. A total of 160 surface scans of the forearm skin were performed with a TRIOS 3D scanner. Vascular compromise was simulated at different time-points by intermittent occlusion of the blood supply to the forearm skin (first the arterial blood supply and then the venous blood supply). Skin colour changes were examined according to the hue, saturation, and value colour scale. Colour differences were analysed with a paired t-test. Significant differences were observed between the colour of the normal skin and that of the vascular compromised skin (P<0.01). The surface scanner could distinguish between arterial occlusion and venous congestion (P<0.01). A digital surface scan is an objective, non-invasive tool to detect early vascular perfusion disorders of the skin.
Collapse
Affiliation(s)
- J T Deferm
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
| | - F Baan
- Department of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Radboudumc 3D Lab, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - R Schreurs
- Radboudumc 3D Lab, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Oral and Maxillofacial Surgery, Amsterdam UMC Location AMC and Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, The Netherlands
| | - R Willaert
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium; Department of Head and Neck Surgery, Ghent University Hospital, Ghent, Belgium
| | - T Maal
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Radboudumc 3D Lab, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - G Meijer
- Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands; Department of Implantology and Periodontology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| |
Collapse
|
28
|
Zhang Y, Hong G, Zhang Y, Sasaki K, Wu H. Minimally invasive procedures for deficient interdental papillae: A review. J ESTHET RESTOR DENT 2020; 32:463-471. [PMID: 32519508 DOI: 10.1111/jerd.12608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 04/11/2020] [Accepted: 05/15/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Deficient interdental papillae cause a series of problems, including food impaction, phonetic difficulties, and esthetic concerns. The purpose of this article is to provide valid clinical recommendations for clinicians to address these problems in a predictable and less invasive way. OVERVIEW Numerous treatments are available for interdental papillae reconstruction, but most of them involve surgery and yield unpredictable outcomes. Minimally invasive treatments have the advantages of being effective, predictable, and involving only slight injury as compared to surgical treatments. We included 66 studies obtained after searching for relevant papers in PubMed and Web of Science. The etiology and classification of deficient interdental papillae are explained and minimally invasive procedures for deficient interdental papillae reconstruction are summarized. CONCLUSIONS Minimally invasive procedures are promising ways to reconstruct deficient interdental papillae, and have the advantages of slight pain and rapid recovery. It should be noticed that some of the minimally invasive treatments still require further long-term observation to confirm their efficacy. CLINICAL SIGNIFICANCE Familiarity with etiology and classification of deficient interdental papillae can help clinicians to choose the appropriate minimally invasive approach as well as help with case collection to enhance esthetics status in patients with deficient interdental papillae.
Collapse
Affiliation(s)
- Yiding Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hosepital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China.,Division for Globalization Initiative, Liaison Center for Innovative Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Guang Hong
- Division for Globalization Initiative, Liaison Center for Innovative Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Yifan Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hosepital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China.,Division of Advanced Prosthetic Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Keiichi Sasaki
- Division of Advanced Prosthetic Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Hongkun Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hosepital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China
| |
Collapse
|
29
|
Choi YD, Mai HN, Mai HY, Ha JH, Li LJ, Lee DH. The Effects of Distribution of Image Matched Fiducial Markers on Accuracy of Computer-Guided Implant Surgery. J Prosthodont 2020; 29:409-414. [PMID: 32237001 DOI: 10.1111/jopr.13171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/17/2020] [Accepted: 03/24/2020] [Indexed: 11/27/2022] Open
Abstract
PURPOSE Image registration of the optical intraoral scan to computed tomography image is essential for computer-guided implant surgery. The remaining teeth, which are considered to be congruent structures observed in the scan and radiographic images, are used to perform the image registration. The purpose of this study was to evaluate the effects of the distribution of matching fiducial points on the accuracy of the image registration. MATERIALS AND METHODS A partially edentulous model with three anterior remaining teeth was prepared. Two mini dental implants were inserted in the posterior edentulous areas on both sides, and computed tomography and surface scan data were obtained. Three groups were set according to the distribution of the image matching points used: localized distribution, unilateral distribution, and bilateral distribution. Fifteen graduate students performed the registration process in each group using the same image matching method. The accuracy of image registration was evaluated by measuring the geometric discrepancies between the radiographic and registered scan images in the anterior, middle, and posterior regions. One-way and two-way analysis of variance with the Tukey HSD post hoc test were used for statistical analysis (α = 0.05) RESULTS: In general, the registration discrepancy was lowest in the bilateral distribution group, followed by the unilateral distribution and localized distribution groups (p< 0.001). In the regional analysis, the registration error tended to increase as the measurement region moved farther from the matching points. The distribution of the matching points and measurement regions had a statistical interaction in the accuracy of image registration. CONCLUSION The accuracy of image registration of the surface scan to the computed tomography is affected by the matching point distribution that can be improved by placing artificial markers in the edentulous areas.
Collapse
Affiliation(s)
- Yong-Do Choi
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - Hang-Nga Mai
- Institute for Translational Research in Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - Hai Yen Mai
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - Jung-Hong Ha
- Department of Conservative Dentistry, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | | | - Du-Hyeong Lee
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea.,Institute for Translational Research in Dentistry, Kyungpook National University, Daegu, Republic of Korea
| |
Collapse
|
30
|
Lee JS, Jeon YS, Strauss FJ, Jung HI, Gruber R. Digital scanning is more accurate than using a periodontal probe to measure the keratinized tissue width. Sci Rep 2020; 10:3665. [PMID: 32111855 PMCID: PMC7048786 DOI: 10.1038/s41598-020-60291-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 02/10/2020] [Indexed: 11/28/2022] Open
Abstract
This study aimed to compare the accuracy and reliability of digital versus conventional clinical measurements of the width of keratinized tissue. To this end, the keratinized tissue width was measured at 110 tooth sites in 5 pig jaws. The measurements were made at each site using three-dimensional (3D) scanned images and a periodontal probe. The actual keratinized tissue width was subsequently measured on histologic slides prepared from the same sites, and differences between the histologic slides and the digital and clinical measurements were analyzed to determine their accuracy in two measurement rounds. Furthermore, intrarater and interrater reliabilities were evaluated using the intraclass correlation coefficient (ICC). Here we show that the mean differences (and lower/upper limits of agreement) between the histologic and the digital/clinical measurements were 0.10 mm (−1.34/1.54 mm) and 1.11 mm (−0.69/2.92 mm), respectively, in the first round of measurements (p < 0.01), and 0.04 mm (−1.52/1.59 mm) and 1.05 mm (−0.37/2.48 mm) in the second round of measurements (p < 0.01). Moreover, we found that the intrarater reliability was higher for the digital measurements (ICC = 0.97, confidence interval [CI] = 0.96–0.97) than for the clinical measurements (ICC = 0.87, CI = 0.86–0.89; p < 0.01). Taken together, our results demonstrate that digital measurements of the keratinized tissue width using 3D scanned images can replace conventional clinical measurements using a periodontal probe since they are more accurate and reliable.
Collapse
Affiliation(s)
- Jung-Seok Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
| | - Yoon-Sun Jeon
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Franz-Josef Strauss
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.,Department of Oral Biology, School of Dentistry, Medical University of Vienna, Vienna, Austria.,Department of Conservative Dentistry, School of Dentistry, University of Chile, Santiago, Chile
| | - Hoi-In Jung
- Department of Preventive Dentistry & Public Oral Health, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Reinhard Gruber
- Department of Oral Biology, School of Dentistry, Medical University of Vienna, Vienna, Austria
| |
Collapse
|
31
|
Liu Y, Zhang R, Ye H, Wang S, Wang KP, Liu Y, Zhou Y. The development of a 3D colour reproduction system of digital impressions with an intraoral scanner and a 3D printer: a preliminary study. Sci Rep 2019; 9:20052. [PMID: 31882952 PMCID: PMC6934843 DOI: 10.1038/s41598-019-56624-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 12/16/2019] [Indexed: 11/09/2022] Open
Abstract
This study aimed to develop a three-dimensional (3D) colour reproduction system to improve the aesthetic effects of dental prostheses. The system's colour accuracy was also evaluated. Based on the concept of colour management, 96 colour patches were selected to develop colour profiles for an intraoral scanner and a 3D printer using polynomial regression. The colour differences Δ[Formula: see text] between colour patches reproduced using different colour profiles and the original colour patches were analysed to select the best combinations of colour profiles. The 3D colour reproduction system with the best-performing (i.e. third-order polynomial regression) colour profiles was finally evaluated using tooth and gum shades. The median Δ[Formula: see text] was 6.940 ranging from 1.504 to 32.660. In terms of tooth and gum shade, the median Δ[Formula: see text] was 6.313, and half of the shade blocks were above the mismatch threshold (Δ[Formula: see text] > 6.80). In conclusion, the colour management based on polynomial regression can decrease the colour difference of the 3D colour reproduction system, but not to clinically acceptable levels. Further advances are needed to improve the methods and hardware.
Collapse
Affiliation(s)
- Yushu Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Rui Zhang
- Department of Prosthodontics, Stomatology Center, Peking University Shenzhen Hospital, Shenzhen, 518001, Guangdong, China
| | - Hongqiang Ye
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Shimin Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Kuan-Paul Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Yunsong Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, 100081, China.
| |
Collapse
|
32
|
Tasaka A, Uekubo Y, Mitsui T, Kasahara T, Takanashi T, Homma S, Matsunaga S, Abe S, Yoshinari M, Yajima Y, Sakurai K, Yamashita S. Applying intraoral scanner to residual ridge in edentulous regions: in vitro evaluation of inter-operator validity to confirm trueness. BMC Oral Health 2019; 19:264. [PMID: 31791324 PMCID: PMC6889518 DOI: 10.1186/s12903-019-0918-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 09/20/2019] [Indexed: 11/17/2022] Open
Abstract
Background The purpose of this study was to investigate the trueness of intraoral scanning of residual ridge in edentulous regions during in vitro evaluation of inter-operator validity. Methods Both edentulous maxillary and partially edentulous mandibular models were selected as a simulation model. As reference data, scanning of two models was performed using a dental laboratory scanner (D900, 3Shape A/S). Five dentists used an intraoral scanner (TRIOS 2, 3Shape A/S) five times to capture intraoral scanner data, and the “zig-zag” scanning technique was used. They did not have experience with using intraoral scanners in clinical treatment. The intraoral scanner data was overlapped with the reference data (Dental System, 3Shape A/S). Regarding differences that occurred between the reference and intraoral scanner data, the vertical maximum distance of the difference and the integral value obtained by integrating the total distance were analyzed. Results In terms of the maximum distances of the difference on the maxillary model, the means of five operators were as follows: premolar region, 0.30 mm; molar region, 0.18 mm; and midline region, 0.18 mm. The integral values were as follows: premolar region, 4.17 mm2; molar region, 6.82 mm2; and midline region, 4.70 mm2. Significant inter-operator differences were observed with regard to the integral values of the distance in the premolar and midline regions and with regard to the maximum distance in the premolar region, respectively. The maximum distances of the difference in the free end saddles on mandibular model were as follows: right side, 0.05 mm; and left side, 0.08 mm. The areas were as follows: right side, 0.78 mm2; and left side, 1.60 mm2. No significant inter-operator differences were observed in either region. Conclusions The present study demonstrated satisfactory trueness of intraoral scanning of the residual ridge in edentulous regions during in vitro evaluation of inter-operator validity.
Collapse
Affiliation(s)
- Akinori Tasaka
- Department of Removable Partial Prosthodontics, Tokyo Dental College, 2-9-18 Kandamisakicho Chiyoda-ku, Tokyo, 101-0061, Japan. .,Oral Health Science Center, Tokyo Dental College, Tokyo, Japan.
| | - Yuuki Uekubo
- Department of Removable Partial Prosthodontics, Tokyo Dental College, 2-9-18 Kandamisakicho Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Tomoharu Mitsui
- Department of Removable Partial Prosthodontics, Tokyo Dental College, 2-9-18 Kandamisakicho Chiyoda-ku, Tokyo, 101-0061, Japan
| | - Takao Kasahara
- Department of Prosthodontics, Matsumoto Dental University, Shiojiri, Japan
| | - Takuya Takanashi
- Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
| | - Shinya Homma
- Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
| | - Satoru Matsunaga
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan.,Department of Anatomy, Tokyo Dental College, Tokyo, Japan
| | - Shinichi Abe
- Department of Anatomy, Tokyo Dental College, Tokyo, Japan
| | - Masao Yoshinari
- Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - Yasutomo Yajima
- Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
| | - Kaoru Sakurai
- Department of Removable Prosthodontics and Gerodontology, Tokyo Dental College, Tokyo, Japan
| | - Shuichiro Yamashita
- Department of Removable Partial Prosthodontics, Tokyo Dental College, 2-9-18 Kandamisakicho Chiyoda-ku, Tokyo, 101-0061, Japan
| |
Collapse
|
33
|
Evaluation of intraoral digital impressions for obtaining gingival contour in the esthetic zone: accuracy outcomes. Clin Oral Investig 2019; 24:1401-1410. [DOI: 10.1007/s00784-019-03105-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 09/30/2019] [Indexed: 10/25/2022]
|
34
|
Preoperative Planning and Simulation in Patients With Cleft Palate Using Intraoral Three-Dimensional Scanning and Printing. J Craniofac Surg 2019; 30:2245-2248. [DOI: 10.1097/scs.0000000000005983] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
35
|
Zhang Y, Tian J, Wei D, Di P, Lin Y. Quantitative clinical adjustment analysis of posterior single implant crown in a chairside digital workflow: A randomized controlled trial. Clin Oral Implants Res 2019; 30:1059-1066. [DOI: 10.1111/clr.13519] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/20/2019] [Accepted: 07/08/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Yifan Zhang
- Department of Oral Implantology Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Disease & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology Beijing China
| | - Jiehua Tian
- Department of Oral Implantology Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Disease & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology Beijing China
| | - Donghao Wei
- Department of Oral Implantology Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Disease & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology Beijing China
| | - Ping Di
- Department of Oral Implantology Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Disease & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology Beijing China
| | - Ye Lin
- Department of Oral Implantology Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Disease & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology Beijing China
| |
Collapse
|
36
|
Tian J, Wei D, Zhao Y, Di P, Jiang X, Lin Y. Labial soft tissue contour dynamics following immediate implants and immediate provisionalization of single maxillary incisors: A 1‐year prospective study. Clin Implant Dent Relat Res 2019; 21:492-502. [PMID: 31058433 DOI: 10.1111/cid.12786] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jiehua Tian
- Department of Oral ImplantologyPeking University School and Hospital of Stomatology Beijing China
| | - Donghao Wei
- Department of Oral ImplantologyPeking University School and Hospital of Stomatology Beijing China
| | - Yijiao Zhao
- Center of Digital DentistryPeking University School and Hospital of Stomatology; National Engineering Laboratory for Digital and Material Technology of Stomatology; Beijing Key Laboratory of Digital Stomatology Beijing China
| | - Ping Di
- Department of Oral ImplantologyPeking University School and Hospital of Stomatology Beijing China
| | - Xi Jiang
- Department of Oral ImplantologyPeking University School and Hospital of Stomatology Beijing China
| | - Ye Lin
- Department of Oral ImplantologyPeking University School and Hospital of Stomatology Beijing China
| |
Collapse
|
37
|
Isola G, Matarese M, Ramaglia L, Iorio-Siciliano V, Cordasco G, Matarese G. Efficacy of a drug composed of herbal extracts on postoperative discomfort after surgical removal of impacted mandibular third molar: a randomized, triple-blind, controlled clinical trial. Clin Oral Investig 2019; 23:2443-2453. [PMID: 30311061 DOI: 10.1007/s00784-018-2690-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 10/02/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVES This study investigated and compared the effectiveness of a phytotherapeutic drug composed of herbal extracts on postsurgical discomfort after mandibular third molar surgery. MATERIALS AND METHODS Eighty-two patients requiring the surgical removal of a mandibular third molar were randomly assigned to receive placebo (group 1), ibuprofen (group 2), and a phytotherapeutic drug (composed of baicalin, 190 mg; bromelain, 50 mg; escin, 30 mg) (group 3). Drugs were administered after tooth extraction twice a day for 5 days. The primary outcome, pain, was evaluated using a visual analogue scale at 2 h, 6 h, 12 h, 24 h, 48 h, and 7 and 10 days after surgery. The secondary outcomes were the changes in maximum mouth opening and facial contours (mm) between baseline and at 24 h, 72 h, and 7 and 10 days after surgery. RESULTS Compared to the baseline, all treatments demonstrated an improvement in the primary and secondary outcomes. Moreover, compared to groups 1 and 2, patients in group 3 yielded a significant reduction of the postoperative pain score at 12 h (p < 0.001), 24 h (p = 0.010), and 48 h (p = 0.048) after surgery. The mean reduction of the swelling and trismus was similar between groups. CONCLUSIONS The results of this study suggest that a postoperative administration of a phytotherapeutic drug was found to be effective in postoperative pain management after the surgical removal of impacted mandibular third molars. CLINICAL RELEVANCE The phytotherapeutic drug composed of herbal extract determined a decrease in the severity of postoperative pain compared to ibuprofen and placebo.
Collapse
Affiliation(s)
- Gaetano Isola
- Department of Biomedical, Odontostomatological Sciences and of Morphological and Functional Images, School of Dentistry, University of Messina, AOU Policlinico "G. Martino", Via C. Valeria 1, 98125, Messina, Italy.
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Medicine, University of Naples "Federico II", Via G. Pansini 5, 80131, Naples, Italy.
| | - Marco Matarese
- Department of Biomedical, Odontostomatological Sciences and of Morphological and Functional Images, School of Dentistry, University of Messina, AOU Policlinico "G. Martino", Via C. Valeria 1, 98125, Messina, Italy
| | - Luca Ramaglia
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Medicine, University of Naples "Federico II", Via G. Pansini 5, 80131, Naples, Italy
| | - Vincenzo Iorio-Siciliano
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Medicine, University of Naples "Federico II", Via G. Pansini 5, 80131, Naples, Italy
| | - Giancarlo Cordasco
- Department of Biomedical, Odontostomatological Sciences and of Morphological and Functional Images, School of Dentistry, University of Messina, AOU Policlinico "G. Martino", Via C. Valeria 1, 98125, Messina, Italy
| | - Giovanni Matarese
- Department of Biomedical, Odontostomatological Sciences and of Morphological and Functional Images, School of Dentistry, University of Messina, AOU Policlinico "G. Martino", Via C. Valeria 1, 98125, Messina, Italy
| |
Collapse
|
38
|
Zhongpeng Y, Tianmin X, Ruoping J. Deviations in palatal region between indirect and direct digital models: an in vivo study. BMC Oral Health 2019; 19:66. [PMID: 31029133 PMCID: PMC6487036 DOI: 10.1186/s12903-019-0751-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 03/31/2019] [Indexed: 11/14/2022] Open
Abstract
Background Studies focusing on accuracy of intraoral digital models in the palatal region are scarce. The present study aimed to investigate the influence of different scanning sequences on palatal trueness and to assess deviation and distribution character of trueness in palate. Methods Overall, 35 participants accepted three types of procedures to acquire upper digital models. Indirect models digitalised from plaster models were considered as the reference. Two direct digital models were acquired using TRIOS 3 POD intraoral scanners, namely Groups Tr1 and Tr2, wherein intraoral scanning differed in terms of palatal scanning sequences. Based on a modified dental-level superimposition method, 3D measurements of trueness in palate and palatal vault region (PVR) for palatal stable regional superimposition in Groups Tr1 and Tr2, respectively, were performed. Absolute deviations were measured for trueness, while signed deviations were analysed for shape distortion. Colour-coded maps were used for quantitative analysis of deviation distribution pattern. Paired t test was used to analyse differences in palatal trueness between different scanning sequences. One-way repeated-measures analysis of variance and Bonferroni test were used to compare trueness measurements among different superimposition methods. Intraclass correlation coefficient (ICC) was used to verify reproducibility of the proposed method. Results Palatal trueness in Group Tr1 (118.59 ± 37.67 μm) was slightly less accurate than that (108.25 ± 33.83 μm) in Group Tr2 (p = 0.012 < 0.05). Trueness of PVR in Groups Tr1 (127.35 ± 54.11 μm) and Tr2 (118.17 ± 49.52 μm) did not differ significantly (p = 0.149). Moreover, no significant difference was noted in distortion of the palatal region and PVR in Groups Tr1 and Tr2 (p = 0.582 and 0.615, respectively). A similar pattern of palatal trueness was noted in a majority of participants (22/35). For 3D palatal trueness measurement, there were different applications for different superimposition methods. ICC for the proposed method was > 0.90. Conclusions Scanning sequences can affect palatal trueness. Palatal scanning should be initiated at the palatal side of the posterior teeth where the initial scan begins. For 3D PVR superimposition, distal boundary of the selected region should be adjusted mesially whilst referring to intraoral digital models. Trial registration The trial has been registered (registration No: R000039467, Trial ID: UMIN000034617, date of registration: 2018/10/24‘retrospectively registered’).
Collapse
Affiliation(s)
- Yang Zhongpeng
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, No.22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China.,Department of Orthodontics, Peking University School and Hospital of Stomatology, No.22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China
| | - Xu Tianmin
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, No.22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China.,Department of Orthodontics, Peking University School and Hospital of Stomatology, No.22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China
| | - Jiang Ruoping
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, No.22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China. .,Department of Orthodontics, Peking University School and Hospital of Stomatology, No.22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China.
| |
Collapse
|