1
|
Shi Y, Lai Y, Guo Y, Cai Z, Mao C, Lu M, Ren C, Ong JL, Chen W. Aspirin/amoxicillin loaded chitosan microparticles and polydopamine modified titanium implants to combat infections and promote osteogenesis. Sci Rep 2024; 14:7624. [PMID: 38561345 PMCID: PMC10984998 DOI: 10.1038/s41598-024-57156-1] [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: 12/09/2023] [Accepted: 03/14/2024] [Indexed: 04/04/2024] Open
Abstract
It is known that titanium (Ti) implant surfaces exhibit poor antibacterial properties and osteogenesis. In this study, chitosan particles loaded with aspirin, amoxicillin or aspirin + amoxicillin were synthesized and coated onto implant surfaces. In addition to analysing the surface characteristics of the modified Ti surfaces, the effects of the modified Ti surfaces on the adhesion and viability of rat bone marrow-derived stem cells (rBMSCs) were evaluated. The metabolic activities of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) biofilms on the modified Ti surfaces were also measured in vitro. Moreover, S. aureus was tested for its antibacterial effect by coating it in vivo. Using water as the droplet medium, the contact angles of the modified Ti surfaces increased from 44.12 ± 1.75° to 58.37 ± 4.15°. In comparison to those of the other groups tested, significant increases in rBMSC adhesion and proliferation were observed in the presence of aspirin + amoxicillin-loaded microspheres, whereas a significant reduction in the metabolic level of biofilms was observed in the presence of aspirin + amoxicillin-loaded microspheres both in vitro and in vivo. Aspirin and amoxicillin could be used in combination to coat implant surfaces to mitigate bacterial activities and promote osteogenesis.
Collapse
Affiliation(s)
- Yun Shi
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Yongzhen Lai
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Yan Guo
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Zhiyu Cai
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Chuanqing Mao
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Meng Lu
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Chengyan Ren
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Joo L Ong
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA.
| | - Weihui Chen
- Department of Oral and Maxillofacial Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.
| |
Collapse
|
2
|
Fujii Y, Hatori A, Minami S, Kanno Y, Hamada H, Miyazawa T, Chikazu D. Characteristics and Risk Factors for the Fracture of One-Piece Implants. J Maxillofac Oral Surg 2023; 22:1091-1098. [PMID: 38105858 PMCID: PMC10719176 DOI: 10.1007/s12663-023-02033-z] [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: 03/13/2023] [Accepted: 10/16/2023] [Indexed: 12/19/2023] Open
Abstract
Objective The one-piece dental implant was originally designed to overcome the structural weaknesses of the two-piece implant. However, a fractured one-piece implant requires removal because the abutment cannot be repaired or replaced to support new prosthetic restorations. The aim of this study was to clarify the features and risk factors for fracture of the one-piece implant. Methods This study was designed as a retrospective case series research. The subjects were patients who were treated for fractures of the one-piece implant at a clinic in Japan between 2012 and 2021. Fractures of the one-piece implant were diagnosed by cone-beam computed tomography, and the association between age and duration from implant placement to fracture was analyzed by one-way ANOVA followed by the Tukey test. Results Eighteen patients and 20 one-piece implants (under 39 years: 5 patients and 6 implants; 40-59 years: 7 patients and 7 implants; over 60 years: 6 patients and 7 implants) had fractures in their one-piece implants. Of the fractured implants, 11 had a diameter of 3 mm, and 9 had a diameter of 4 mm. The mean durations up to implant fracture were 662 days in the younger group, 1467 days in the middle group, and 1239 days in older group, and the duration was significantly shorter in the younger group. In addition, 83.3% of fracture implants in the younger group were in the molar region. All fractures of the one-piece implants occurred under the bone margin. Two patients had torus mandibularis, and 1 patient was had bruxism. Conclusions One-piece implants in younger patients that are located in the lower molar position are the most susceptible to implant fracture, and the fracture occurred under the bone margin in all cases.
Collapse
Affiliation(s)
- Yasuyuki Fujii
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-Ku, Tokyo, Japan
- Tokyo Ekimae Dental Clinic, 3-3-11 Kyobashi, Chuo-Ku, Tokyo, Japan
| | - Ayano Hatori
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-Ku, Tokyo, Japan
| | - Sakura Minami
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-Ku, Tokyo, Japan
| | - Yuki Kanno
- Tokyo Ekimae Dental Clinic, 3-3-11 Kyobashi, Chuo-Ku, Tokyo, Japan
- Department of Oral and Maxillofacial Surgery, Tokyo Women’s Medical University, 8-1 Kawada-Cho, Shinjuku-Ku, Tokyo, Japan
| | - Hayato Hamada
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-Ku, Tokyo, Japan
| | | | - Daichi Chikazu
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-Ku, Tokyo, Japan
| |
Collapse
|
3
|
Lee D, Ko YC, Seol YJ, Koo KT, Lee YM, Lee J. Risk factors impacting the survival of implants replaced following failure: A retrospective study. Clin Implant Dent Relat Res 2023; 25:1008-1018. [PMID: 37574782 DOI: 10.1111/cid.13265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 07/29/2023] [Indexed: 08/15/2023]
Abstract
AIM This study aimed to investigate factors influencing the survival of replaced dental implants. MATERIALS AND METHODS Charts from 2005 to 2021 were reviewed. Replaced implants after removal for the first time were identified. Depending on their survival, the replaced group was divided into the surviving and second-removal groups. Risk factors affecting survival of replaced implants were evaluated considering clustering of multiple implants within patients. RESULTS The present study included 464 replaced implants of 370 patients, of which 429 and 35 implants were categorized into the surviving group and the second-removal group. The 5-year survival rate was 90.2 ± 0.18% in replaced implants at sites with a periodontitis history and 97.0 ± 0.15% at sites without a periodontitis history (p = 0.008). The 5-year survival rate was 89.1 ± 0.27% in replaced implants with guided bone regeneration (GBR) at first implant placement and 93.9 ± 0.14% at non-GBR (p = 0.032). The 5-year survival rate was 97.6 ± 0.13% in replaced implants with GBR and 90.3 ± 0.17% in replaced implants without GBR (p = 0.026). In the multivariable analysis adjusted for clinical variables, periodontitis history (adjusted hazard ratio [aHR] = 3.417; 95% confidence interval [CI] = 1.161-10.055), GBR at first implant placement (aHR = 2.152; 95% CI = 1.052-4.397) and non-GBR at primary implant replacement (aHR = 0.262; 95% CI = 0.088-0.778) were identified as independent risk factors for second implant removal. CONCLUSIONS Periodontitis history, GBR at first implant placement and non-GBR at primary implant replacement were identified as risk factors affecting the survival of replaced implants.
Collapse
Affiliation(s)
- Dongseob Lee
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- National Dental Care Center for Persons With Special Needs, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Young-Chang Ko
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Periodontology, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Yang-Jo Seol
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Periodontology, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Ki-Tae Koo
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Periodontology, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Yong-Moo Lee
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- Department of Periodontology, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Jungwon Lee
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
- One-Stop Specialty Center, Seoul National University Dental Hospital, Seoul, Republic of Korea
| |
Collapse
|
4
|
Do JH, Cobb CM. Perigraftitis and implant therapy: A case report. Clin Adv Periodontics 2023. [PMID: 37986692 DOI: 10.1002/cap.10271] [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: 09/13/2023] [Revised: 10/14/2023] [Accepted: 10/21/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND A previous case study reported periimplantitis and concomitant perigraftitis of a second implant placed at a site that had alveolar ridge preservation three decades earlier. Infection at the site persisted 4 months after implant removal by flapless implant reversal. A flap was subsequently reflected, the grafted bone was removed, and a second alveolar ridge preservation was performed with a freeze-dried bone allograft. The publication reported infection resolved, and the site healed uneventfully. However, it is unknown if placement of another implant at the site would be successful. The purpose of this paper is to report on the findings at surgical reentry and outcome of the third implant. METHODS Eleven months after the second alveolar ridge preservation, the site was reentered. The bone graft was found to be partially soft tissue encapsulated. All encapsulated graft materials and soft tissue were removed. An implant was placed, and the alveolar defect was grafted with a demineralized bone allograft. Seventeen months after implant placement, a buccal free gingival graft was performed during which the crestal bone adjacent to the implant was found to be hard and corticated. The implant was deemed to be osseointegrated and restored after soft tissue healing. RESULTS Twenty-five months after implant placement, the third implant remained functional and asymptomatic with the peri-implant bone exhibiting normal trabeculation. CONCLUSIONS Implant therapy can be successful following treatment and resolution of perigraftitis. KEY POINTS Perigraftitis may play a contributing role in the biologic complications of implants that have been placed into grafted bone. Perigraftitis may be successfully resolved by completely removing all grafted bone. Once perigraftitis has been eliminated, an implant may be successfully placed.
Collapse
Affiliation(s)
- Jonathan H Do
- Section of Periodontics, UCLA School of Dentistry, Los Angeles, California, USA
- Private Practice, Poway, California, USA
| | - Charles M Cobb
- Department of Periodontics, School of Dentistry, University of Missouri-Kansas City, Kansas City, Missouri, USA
| |
Collapse
|
5
|
De Stefano M, Lanza A, Sbordone L, Ruggiero A. Stress-strain and fatigue life numerical evaluation of two different dental implants considering isotropic and anisotropic human jaw. Proc Inst Mech Eng H 2023; 237:1190-1201. [PMID: 37667892 DOI: 10.1177/09544119231193879] [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] [Indexed: 09/06/2023]
Abstract
Dental prostheses are currently a valid solution for replacing potential missing tooth or edentulism clinical condition. Nevertheless, the oral cavity is a dynamic and complex system: occlusal loads, external agents, or other unpleasant events can impact on implants functionality and stability causing a future revision surgery. One of the failure origins is certainly the dynamic loading originated from daily oral activities like eating, chewing, and so on. The aim of this paper was to evaluate, by a numerical analysis based on Finite Elements Method (FEM), and to discuss in a comparative way, firstly, the stress-strain of two different adopted dental implants and, subsequently, their fatigue life according to common standard of calculations. For this investigation, the jawbone was modeled accounting for either isotropic or anisotropic behavior. It was composed of cortical and cancellous regions, considering it completely osseointegrated with the implants. The impact of implants' fixture design, loading conditions, and their effect on the mandible bone was finally investigated, on the basis of the achieved numerical results. Lastly, the life cycle of the investigated implants was estimated according to the well-established theories of Goodman, Soderberg, and Gerber by exploiting the outcomes obtained by the numerical simulations, providing interesting conclusions useful in the dental practice.
Collapse
Affiliation(s)
- Marco De Stefano
- Department of Industrial Engineering, University of Salerno, Fisciano, Italy
| | - Antonio Lanza
- Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana," University of Salerno, Baronissi, Italy
| | - Ludovico Sbordone
- Department of Medicine and Health Sciences, University of Molise, V Campobasso, Italy
| | - Alessandro Ruggiero
- Department of Industrial Engineering, University of Salerno, Fisciano, Italy
| |
Collapse
|
6
|
Seo BY, Son K, Son YT, Dahal RH, Kim S, Kim J, Hwang J, Kwon SM, Lee JM, Lee KB, Kim JW. Influence of Dental Titanium Implants with Different Surface Treatments Using Femtosecond and Nanosecond Lasers on Biofilm Formation. J Funct Biomater 2023; 14:297. [PMID: 37367261 DOI: 10.3390/jfb14060297] [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: 05/09/2023] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 06/28/2023] Open
Abstract
This study aimed to evaluate the impact of different surface treatments (machined; sandblasted, large grit, and acid-etched (SLA); hydrophilic; and hydrophobic) on dental titanium (Ti) implant surface morphology, roughness, and biofilm formation. Four groups of Ti disks were prepared using distinct surface treatments, including femtosecond and nanosecond lasers for hydrophilic and hydrophobic treatments. Surface morphology, wettability, and roughness were assessed. Biofilm formation was evaluated by counting the colonies of Aggregatibacter actinomycetemcomitans (Aa), Porphyromonas gingivalis (Pg), and Prevotella intermedia (Pi) at 48 and 72 h. Statistical analysis was conducted to compare the groups using the Kruskal-Wallis H test and the Wilcoxon signed-rank test (α = 0.05). The analysis revealed that the hydrophobic group had the highest surface contact angle and roughness (p < 0.05), whereas the machined group had significantly higher bacterial counts across all biofilms (p < 0.05). At 48 h, the lowest bacterial counts were observed in the SLA group for Aa and the SLA and hydrophobic groups for Pg and Pi. At 72 h, low bacterial counts were observed in the SLA, hydrophilic, and hydrophobic groups. The results indicate that various surface treatments affect implant surface properties, with the hydrophobic surface using femtosecond laser treatment exerting a particularly inhibitory effect on initial biofilm growth (Pg and Pi).
Collapse
Affiliation(s)
- Bo Yun Seo
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea
| | - KeunBaDa Son
- Advanced Dental Device Development Institute (A3DI), Kyungpook National University, Daegu 41940, Republic of Korea
| | - Young-Tak Son
- Advanced Dental Device Development Institute (A3DI), Kyungpook National University, Daegu 41940, Republic of Korea
- Department of Dental Science, Graduate School, Kyungpook National University, Daegu 41940, Republic of Korea
| | - Ram Hari Dahal
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea
| | - Shukho Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea
| | - Jungmin Kim
- Department of Microbiology, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea
| | - JunHo Hwang
- Institute of Advanced Convergence Technology, Kyungpook National University, Daegu 41061, Republic of Korea
| | - Sung-Min Kwon
- Institute of Advanced Convergence Technology, Kyungpook National University, Daegu 41061, Republic of Korea
| | - Jae-Mok Lee
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea
| | - Kyu-Bok Lee
- Advanced Dental Device Development Institute (A3DI), Kyungpook National University, Daegu 41940, Republic of Korea
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea
| | - Jin-Wook Kim
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea
| |
Collapse
|
7
|
Zhou M, Wang J, Wang J, Yu J, Huang S, Wang T, Wei H. Construction of a Localized and Long-Acting CCN2 Delivery System on Percutaneous Ti Implant Surfaces for Enhanced Soft-Tissue Integration. ACS APPLIED MATERIALS & INTERFACES 2023; 15:22864-22875. [PMID: 37133335 DOI: 10.1021/acsami.3c00884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Soft-tissue integration (STI) plays an essential role in the long-term success of percutaneous Ti implants since it acts as a biological barrier that protects the soft and hard tissue around implants. Surface modification of Ti implants with drug-release properties to achieve soft-tissue regeneration has been proven to be effective in STI. However, the short-acting effect caused by the uncontrolled drug release of the topical delivery system limits long-term STI enhancement. Herein, a long-acting protein delivery system for Ti implants that involved micro-arc oxidation of Ti surfaces (MAO-Ti) and localized immobilization of cellular communication network factor 2 (CCN2) bearing mesoporous silica nanoparticles (MSNs) on MAO-Ti was prepared, namely, CCN2@MSNs-Ti. The CCN2 release study of CCN2@MSNs-Ti demonstrated a sustained-release profile for 21 days, which was able to maintain long-term stable STI. In addition, in vitro cell behavior evaluation results indicated that CCN2@MSNs-Ti could promote the STI-related biological response of human dermal fibroblasts via the FAK-MAPK pathway. More importantly, the system could effectively enhance STI after 4 weeks and proinflammatory factors in the soft tissue decreased significantly in a rat model of implantation. These results denote that CCN2@MSNs-Ti showed an appealing application prospect for enhanced STI around transcutaneous Ti implants, which would ultimately result in an increased success rate of percutaneous Ti implants.
Collapse
Affiliation(s)
- Minghao Zhou
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, Shaanxi, P. R. China
| | - Jing Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, Shaanxi, P. R. China
| | - Jia Wang
- Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, Shaanxi, P. R. China
| | - Jingwei Yu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, Shaanxi, P. R. China
| | - Shitou Huang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, Shaanxi, P. R. China
| | - Tengjiao Wang
- Frontiers Science Center for Flexible Electronics (FSCFE), Xi'an Institute of Flexible Electronics (IFE) & Xi'an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University (NPU), Xi'an 710129, Shaanxi, P. R. China
| | - Hongbo Wei
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, Shaanxi, P. R. China
| |
Collapse
|
8
|
Aslan M. The Influence of Health Behavior on Immediate Loading Implant Success and Patient Satisfaction In The Complete Edentulous Treatment. Am J Health Behav 2023; 47:75-86. [PMID: 36945102 DOI: 10.5993/ajhb.47.1.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Objective: The cases of edentulous treatment are increasing in Turkey. The patients are less satisfied with the health care facilities of the public sector health institutes. The government of Turkey is facing critical challenges for medical reforms in the public sector to improve the living standards of the public. The objective of current research is to determine the influence of health behavior on immediate loading implant success and patient satisfaction in complete edentulous treatment. Method: A Likert scale questionnaire is employed and the response rate of this research is 71%. The population of this research is the patients visiting different clinics for edentulous treatment and loading implant success. Results: The research findings demonstrate the satisfaction of the patients and implant success is influenced by the health behavior of patients. Conclusion: The model of this research is enrichment in the knowledge of the edentulous treatment of the patients. The practical implications of this research are outstanding to influence the satisfaction of the edentulous treatment patients who are getting the treatment of loading implant success. The research has certain limitations that are straightforwardly presented with future directions to enrich the knowledge of edentulous treatment by the research work of scholars in health care.
Collapse
Affiliation(s)
- Muzaffer Aslan
- Istanbul Health and Technology University, Faculty of Dentistry, Department of Oral and Maxillofacial Surgery, Türkiye;,
| |
Collapse
|
9
|
Tak S, Noh G, Jeong Y, Lee H. Automated vector analysis to design implant-supported prostheses: A dental technique. J Prosthet Dent 2023; 129:257-261. [PMID: 34217508 DOI: 10.1016/j.prosdent.2021.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/20/2021] [Accepted: 05/20/2021] [Indexed: 11/18/2022]
Abstract
The prosthesis loading force is an important factor for dental implant survival. Even if adequate osseointegration of the dental implant has been achieved, if the occlusal forces are not correctly distributed, lateral torque can be generated causing high stress on surrounding tissues. The stress value of implant prostheses could be different whether the direction of load is vertical or oblique, affected by the shape of the occlusal surface. When an implant-supported prosthesis is designed with a dental computer-aided design software program, the average vectors from each occlusal contact point can be visualized. If the visualized vector generates lateral torque, the occlusal surface design can be modified before finalizing the design. The described technique uses automated vector analysis to enable visualization of the occlusal vector to improve prosthesis design, optimizing occlusal forces.
Collapse
Affiliation(s)
- Sangmyeong Tak
- Doctoral student, Department of Prosthodontics, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
| | - Gunwoo Noh
- Assistant Professor, School of Mechanical Engineering, Korea University, Seoul, Republic of Korea
| | - Yuwon Jeong
- Researcher, Department of Prosthodontics, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
| | - Hyeonjong Lee
- Assistant Professor, Department of Prosthodontics, Dental Research Institute, Dental and Life Science Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea.
| |
Collapse
|
10
|
Kshirsagar M, Dhatrak P. Strain based in vitro analysis of dental implant using artificial bone model and validation by numerical technique. Med Eng Phys 2023; 111:103931. [PMID: 36792245 DOI: 10.1016/j.medengphy.2022.103931] [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: 08/04/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND/PURPOSE Dental implant fails due to mechanical failure of the implant contribute to about 10-15 % of implant failures. It is necessary to prevent the design failure of the implant since it leads to bone loss which further leads to complications in reimplantation. This makes it important to test the design of a dental implant using FEM and in vitro testing before its application. The purpose of this article is to test the design of a dental implant using in vitro testing by using an artificial bone model and validation of the data using Finite Element Method (FEM). METHODS A dental implant was selected for in vitro testing and 3D FE analysis was conducted to observe the stress values. The in vitro study was done on a custom designed testing rig where the implant was drilled into a ABS and sawbone (polyurethane) bone model. Vertical and lateral loads of 100 N and 40 N respectively, were applied to evaluate the micro-strains using strain gauge technique. 3D FEA technique was used to evaluate stress concentrations and micro-strains in the bone-implant interface. RESULTS The strain values were found to be higher in the case of lateral loading than vertical loading with in vitro testing. The von-mises stresses on the cortical bone were greater at the bone-implant interface near the neck region of the implant. CONCLUSIONS The results obtained from the in vitro analysis and FEA were found to have a good agreement with an error percentage of 2-5 %.
Collapse
Affiliation(s)
- Mihir Kshirsagar
- School of Mechanical Engineering, Dr. Vishwanath Karad, MIT-World Peace University, Pune-38, India.
| | - Pankaj Dhatrak
- School of Mechanical Engineering, Dr. Vishwanath Karad, MIT-World Peace University, Pune-38, India
| |
Collapse
|
11
|
Can the Immediate Implantation With Immediate Loading Achieve an Acceptable Esthetic Outcome? A Prospective Observational Clinical Study. J Craniofac Surg 2023; 34:e79-e84. [PMID: 35996220 DOI: 10.1097/scs.0000000000008876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 06/04/2022] [Indexed: 01/11/2023] Open
Abstract
The trending protocol in implantology aims at integrating the esthetic on par with function while reducing discomfort and treatment time with optimal results. The purpose of this study was to evaluate the pink esthetic score in sites treated by graftless instant implantation that was boosted by instant provisionalization with a 2 to 3 mm jumping distance. Thirty-five implants were inserted in the extraction sockets of teeth of 29 healthy qualified patients (22 females and 7 males) with an age range of 23 to 60 years [mean±SD age 41.11±9.9 y). Preoperative assessment was complemented clinically and radiographically for each patient. The used system was Medentika dental implant (Germany). Osstell implant stability quotient was used to measure implant stability at the time of surgery (baseline) and at 16 weeks. Four implants in 3 patients failed. The implant survival rate was 88.6%. The protocol of this study produced a significant decrease in the jumping distance which is 2 to 3 mm at cone-beam computed tomography evaluation with satisfactory esthetic outcomes clinically. Further comparative studies with long-term and larger samples are needed to confirm the conclusion of this study.
Collapse
|
12
|
Ripszky Totan A, Imre MM, Parvu S, Meghea D, Radulescu R, Enasescu DSA, Moisa MR, Pituru SM. Autophagy Plays Multiple Roles in the Soft-Tissue Healing and Osseointegration in Dental Implant Surgery-A Narrative Review. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6041. [PMID: 36079421 PMCID: PMC9457242 DOI: 10.3390/ma15176041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/21/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
Dental endo-osseous implants have become a widely used treatment for replacing missing teeth. Dental implants are placed into a surgically created osteotomy in alveolar bone, the healing of the soft tissue lesion and the osseointegration of the implant being key elements to long-term success. Autophagy is considered the major intracellular degradation system, playing important roles in various cellular processes involved in dental implant integration. The aim of this review is an exploration of autophagy roles in the main cell types involved in the healing and remodeling of soft tissue lesions and implant osseointegration, post-implant surgery. We have focused on the autophagy pathway in macrophages, endothelial cells; osteoclasts, osteoblasts; fibroblasts, myofibroblasts and keratinocytes. In macrophages, autophagy modulates innate and adaptive immune responses playing a key role in osteo-immunity. Autophagy induction in endothelial cells promotes apoptosis resistance, cell survival, and protection against oxidative stress damage. The autophagic machinery is also involved in transporting stromal vesicles containing mineralization-related factors to the extracellular matrix and regulating osteoblasts' functions. Alveolar bone remodeling is achieved by immune cells differentiation into osteoclasts; autophagy plays an important and active role in this process. Autophagy downregulation in fibroblasts induces apoptosis, leading to better wound healing by improving excessive deposition of extracellular matrix and inhibiting fibrosis progression. Autophagy seems to be a dual actor on the scene of dental implant surgery, imposing further research in order to completely reveal its positive features which may be essential for clinical efficacy.
Collapse
Affiliation(s)
- Alexandra Ripszky Totan
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Marina Melescanu Imre
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Simona Parvu
- Department of Complementary Sciences, Hygiene and Medical Ecology Discipline, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Daniela Meghea
- Department of Complete Denture, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Radu Radulescu
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Dan Sebastian Alexandru Enasescu
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Mihai Radu Moisa
- Department of Biochemistry, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Silviu Mirel Pituru
- Department of Professional Organization and Medical Legislation-Malpractice, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania
| |
Collapse
|
13
|
Lackington WA, Fleyshman L, Schweizer P, Elbs-Glatz Y, Guimond S, Rottmar M. The response of soft tissue cells to Ti implants is modulated by blood-implant interactions. Mater Today Bio 2022; 15:100303. [PMID: 35655805 PMCID: PMC9151735 DOI: 10.1016/j.mtbio.2022.100303] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/10/2022] [Accepted: 05/18/2022] [Indexed: 11/18/2022] Open
Abstract
Titanium-based dental implants have been highly optimized to enhance osseointegration, but little attention has been given to the soft tissue-implant interface, despite being a major contributor to long term implant stability. This is strongly linked to a lack of model systems that enable the reliable evaluation of soft tissue-implant interactions. Current in vitro platforms to assess these interactions are very simplistic, thus suffering from limited biological relevance and sensitivity to varying implant surface properties. The aim of this study was to investigate how blood-implant interactions affect downstream responses of different soft tissue cells to implants in vitro, thus taking into account not only the early events of blood coagulation upon implantation, but also the multicellular nature of soft tissue. For this, three surfaces (smooth and hydrophobic; rough and hydrophobic; rough and hydrophilic with nanostructures), which reflect a wide range of implant surface properties, were used to study blood-material interactions as well as cell-material interactions in the presence and absence of blood. Rough surfaces stimulated denser fibrin network formation compared to smooth surfaces and hydrophilicity accelerated the rate of blood coagulation compared to hydrophobic surfaces. In the absence of blood, smooth surfaces supported enhanced attachment of human gingival fibroblasts and keratinocytes, but limited changes in gene expression and cytokine production were observed between surfaces. In the presence of blood, rough surfaces supported enhanced fibroblast attachment and stimulated a stronger anti-inflammatory response from macrophage-like cells than smooth surfaces, but only smooth surfaces were capable of supporting long-term keratinocyte attachment and formation of a layer of epithelial cells. These findings indicate that surface properties not only govern blood-implant interactions, but that this can in turn also significantly modulate subsequent soft tissue cell-implant interactions.
Collapse
Affiliation(s)
- William A. Lackington
- Biointerfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| | - Lada Fleyshman
- Biointerfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| | - Peter Schweizer
- Mechanics of Materials & Nanostructures Lab, Empa, Swiss Federal Laboratories for Materials Science and Technology, Thun, Switzerland
| | - Yvonne Elbs-Glatz
- Biointerfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| | - Stefanie Guimond
- Biointerfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| | - Markus Rottmar
- Biointerfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| |
Collapse
|
14
|
Yu W, Chen S, Ma L, Ma X, Xu X. Biomechanical Analysis of Different Framework Design, Framework Material and Bone Density in the Edentulous Mandible With Fixed Implant-Supported Prostheses: A Three-Dimensional Finite Element Study. J Prosthodont 2022; 32:309-317. [PMID: 35546271 DOI: 10.1111/jopr.13532] [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: 07/09/2021] [Accepted: 04/24/2022] [Indexed: 11/30/2022] Open
Abstract
PURPOSE The objective of this finite element study was to investigate the effect of different framework designs, framework materials, and bone densities on the stress distribution of fixed implant-supported prostheses for edentulous mandibles. MATERIALS AND METHODS Under the condition of 2-mm cortical bone, 16 models were created in the edentulous mandible to simulate different framework designs (1-piece or 3-piece frameworks) with different framework material (pure titanium, zirconia, polyetheretherketone, or carbon fiber-reinforced polyetheretherketone) in-high or low-density trabecular bone. Then, vertical loading and oblique loading at 75° were applied to the anterior and posterior regions. The stress distribution and stress concentration region of implant and peri-implant bone with different combinations were compared by finite element analysis. RESULTS The use of the 1-piece zirconia framework in high-density trabecular bone improved stress distribution on implants and peri-implant bone. The region of stress concentration is located in the buccal cervix of the distal implants and the distobuccal portion of the cortical bone in all models. To improve the stress distribution on fixed implant-supported dentures for edentulous mandibles, the 1-piece framework and zirconia represent the better combinations. CONCLUSION Under the condition of 2-mm cortical bone thickness, the full-arch zirconia framework had minimum von Mises stress on implants and peri-implant bone in all models, and high trabecular bone density greatly decreased the stress on cortical bone. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Wenqian Yu
- Department of Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Siyi Chen
- Department of Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Li Ma
- Department of Vip center, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Xiaoni Ma
- Department of Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Xin Xu
- Department of Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| |
Collapse
|
15
|
Torrejon-Moya A, Izquierdo-Gómez K, Pérez-Sayáns M, Jané-Salas E, Marí Roig A, López-López J. Patients with Thyroid Disorder, a Contraindication for Dental Implants? A Systematic Review. J Clin Med 2022; 11:jcm11092399. [PMID: 35566524 PMCID: PMC9102443 DOI: 10.3390/jcm11092399] [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: 03/22/2022] [Revised: 04/16/2022] [Accepted: 04/22/2022] [Indexed: 01/25/2023] Open
Abstract
The thyroid gland is composed of the thyroid follicles, considered to be the functional units of the thyroid gland. The synthesis of the thyroid hormones occurs in these follicles. Triiodothyronine (T3) and thyroxine (T4) are the thyroid hormones and affect metabolic processes all through the body. This systematic evaluation was performed to answer the following PICO question: “Can patients with thyroid disorders undergo dental implant rehabilitation with the same survival rate as patients without thyroid disorders?”. A systematic review of the literature was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statements to gather available and current evidence of thyroid disorders and its relationship with dental implants. The electronic search, in the PubMed and Cochrane databases, yielded 22 articles. Out of the 22 articles, only 11 fulfilled the inclusion criteria. Manual research of the reference list yielded no additional papers. According to the SORT criteria and answering our PICO question, level B can be established to conclude that patients with thyroid disorders can be rehabilitated with dental implants, with similar survival rates as patients without thyroid disorders. Papers with higher scientific evidence and bigger sample size should be carried out.
Collapse
Affiliation(s)
- Aina Torrejon-Moya
- Department of Odontoestomatology, Faculty of Medicine and Health Sciences, School of Dentistry, University Campus of Bellvitge, University of Barcelona, 08907 Barcelona, Spain; (A.T.-M.); (K.I.-G.); (E.J.-S.)
- Oral Health and Masticatory System Group, IDIBELL (Bellvitge Biomedical Research Institute), University of Barcelona, 08907 Barcelona, Spain
| | - Keila Izquierdo-Gómez
- Department of Odontoestomatology, Faculty of Medicine and Health Sciences, School of Dentistry, University Campus of Bellvitge, University of Barcelona, 08907 Barcelona, Spain; (A.T.-M.); (K.I.-G.); (E.J.-S.)
- Oral Health and Masticatory System Group, IDIBELL (Bellvitge Biomedical Research Institute), University of Barcelona, 08907 Barcelona, Spain
| | - Mario Pérez-Sayáns
- Oral Medicine, Oral Surgery and Implantology Unit (MedOralRes), School of Medicine and Dentistry, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain;
| | - Enric Jané-Salas
- Department of Odontoestomatology, Faculty of Medicine and Health Sciences, School of Dentistry, University Campus of Bellvitge, University of Barcelona, 08907 Barcelona, Spain; (A.T.-M.); (K.I.-G.); (E.J.-S.)
- Oral Health and Masticatory System Group, IDIBELL (Bellvitge Biomedical Research Institute), University of Barcelona, 08907 Barcelona, Spain
| | - Antonio Marí Roig
- Department of Maxillofacial Surgery, Bellvitge University Hospital, L’Hospitalet de Llobregrat, 08907 Barcelona, Spain;
| | - José López-López
- Department of Odontoestomatology, Faculty of Medicine and Health Sciences, School of Dentistry, University Campus of Bellvitge, University of Barcelona, 08907 Barcelona, Spain; (A.T.-M.); (K.I.-G.); (E.J.-S.)
- Oral Health and Masticatory System Group, IDIBELL (Bellvitge Biomedical Research Institute), University of Barcelona, 08907 Barcelona, Spain
- Correspondence:
| |
Collapse
|
16
|
Oh SL, Shiau HJ, Ashour I, Chen H, Cruz C. Early crestal bone loss around implants placed at previously failed sites compared with initially integrated implants: A retrospective cohort study. Clin Implant Dent Relat Res 2022; 24:233-241. [PMID: 35320613 DOI: 10.1111/cid.13076] [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: 08/30/2021] [Revised: 02/11/2022] [Accepted: 02/14/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND There is minimal information on early crestal bone loss (CBL) associated with implants placed at failed sites. PURPOSE This retrospective cohort study aimed to evaluate CBL of surviving and restored implants placed at previously failed sites (replaced implants [RIs]) compared to that of implants initially integrated and restored (pristine implants [PIs]), within the same subjects from implant placement to 17 months post-delivery of restoration. METHODS Subjects who had both PI(s) and RI(s) were recruited. The following data were retrieved: patient demographics, implant locations, types of implant failure, use of bone graft procedure(s), and intraoral radiographs at implant placement (T0), restoration delivery (T1), and the post-restoration follow-up (T2). A blinded evaluator measured crestal bone levels at T0, T1, and T2. RESULTS Forty-four implants (22 in the RI and 22 in the PI group) from the 22 subjects were reviewed. The 22 implants in the RI group were placed either at early failure (17) or late failure (5) sites. There was a 4.6 times higher likelihood of bone graft procedures performed in association with RIs compared to PIs when using a generalized linear mixed model. Differences in crestal bone levels were compared between the two groups at each time point. There were no significant differences in the mesial and mean crestal bone levels between the PI and RI groups. The RI group exhibited lower crestal bone levels on the distal side compared to the PI group at all time points. However, this difference was due to crestal bone level at T0 (p = 0.039) not due to implant replacement (p = 0.413) or bone graft procedure (p = 0.302) when using mixed regression modeling. CONCLUSION The effect of replacements of implants at failed sites on CBL was not significant. RIs, once integrated, exhibited the same pattern of CBL as pristine implants.
Collapse
Affiliation(s)
- Se-Lim Oh
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Harlan J Shiau
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | | | - Hegang Chen
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Christopher Cruz
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| |
Collapse
|
17
|
Afshari A, Shahmohammadi R, Mosaddad SA, Pesteei O, Hajmohammadi E, Rahbar M, Alam M, Abbasi K. Free-Hand versus Surgical Guide Implant Placement. ADVANCES IN MATERIALS SCIENCE AND ENGINEERING 2022; 2022:1-12. [DOI: 10.1155/2022/6491134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
One of the most key areas of dentistry is dental implant surgery. The use of digital equipment and software in dentistry has developed considerably in recent years compared to other fields of medicine. Since examining the advantages and disadvantages of each approach, along with case studies, can help physicians make informed decisions, this review study aims to raise the awareness of dentists to make easier decisions about using guided or free-hand surgery. When planning for a dental implant, one of the most challenging questions that doctors face is which method to use (guided surgery or free-hand). Choosing the right method, such as other clinical considerations, will depend on the individual circumstances of each patient and the preference of the treating physician. Free-hand surgery is a cost-effective method in which the flap is reflected, and, according to the doctor's diagnostic information, an implant is placed, which in many cases is a useful method. Guided surgery has the highest level of accuracy and control, in which osteotomy is designed and printed through a digital surgery guide, and depending on the complexity of the case and the patient's anatomy, it has a higher level of value than free surgery. The surgical guide helps the surgeon make the implant surgery more accurate, safer, simpler, at a lower cost, and in less time. In fact, there are patterns that convey information about the position of the tooth to the dentist before the implant is placed.
Collapse
Affiliation(s)
- Aysooda Afshari
- Postgraduate Student of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Rojin Shahmohammadi
- Postgraduate Student of Periodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Ali Mosaddad
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ozra Pesteei
- Postgraduate Student of Periodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Emran Hajmohammadi
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mahdi Rahbar
- Department of Restorative Dentistry, School of Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mostafa Alam
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kamyar Abbasi
- Department of Prosthodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
18
|
Abstract
Healthy peri-implant tissues have become synonymous with implant success and a major challenge in contemporary implant dentistry. Numerous local and systemic factors, as well as iatrogenic and other hitherto underappreciated factors of potential clinical relevance may influence the outcome of implant therapy. In this volume of Periodontology 2000, a group of outstanding experts has elaborated on the latest insights on the prevention and management of major surgical, biological and technical complications, to facilitate the establishment and maintenance of peri-implant health. This volume focusses on factors affecting early and late implant loss and the potential role of systemic diseases and local conditions. It comprehensively discusses the implementation of guided implant surgery to facilitate the cleansibility of implant-supported restorations, as well as iatrogenic factors related to bone augmentation/sinus grafting procedures. The challenges associated with soft-tissue grafting and the prevention of esthetic complications are also reviewed as the paradigm of success in implant dentistry shifts from implant survival towards a greater focus on patient-reported outcomes. Prosthetic failures remain a significant challenge and are discussed in light of new evidence, as is the relevance of the structural dimensions of the peri-implant mucosa. The volume closes with detailed and well-illustrated appraisals of the surgical management of peri-implantitis, the management and sequelae of dental implant removal, and the latest evidence for the oral health related quality of life in patients treated with dental implants.
Collapse
Affiliation(s)
- Frank Schwarz
- Department of Oral Surgery and Implantology, Carolinum, Goethe University, Frankfurt, Germany
| | - Ausra Ramanauskaite
- Department of Oral Surgery and Implantology, Carolinum, Goethe University, Frankfurt, Germany
| |
Collapse
|
19
|
Abstract
Inappropriate and unnecessary implant therapy driven by an erroneous belief that dental implants provide enhanced function and esthetics over diseased or failing teeth has led to a growing burden of implant complications across the globe. Specifically, esthetic and biological complications frequently lead to the unfavorable prognosis of dental implants. Often, these cannot be managed predictably to improve the condition or satisfy patients' demands. In such circumstances, implant removal needs to be considered. Currently, minimally invasive methods based on reverse torque engineering are key to preserve peri-implant soft and hard tissues. Implant replacement is now feasible, as evidenced by the high survival rates of implants placed at previously failed sites. Notwithstanding these data, clinicians should still consider carefully the expendability of an implant and whether its replacement will satisfy the prosthetic, biomechanical, and esthetic demands of the patient. In the scenario where future implant placement is desired, protocols undertaken for soft/hard tissue grafting and implant placement should be based upon defect morphology and soft and hard-tissue characteristics. Currently, however, a lack of knowledge of the biological events and dimensional changes that arise following implant removal renders decision-making complex and challenging, and recommendations remain largely based upon empirical speculation. This chapter will review the indications for implant replacement for prosthetic, biomechanical, and esthetic complications, alongside considerations in decision-making, planning, implementation, and outcomes of implant replacement.
Collapse
Affiliation(s)
- Alberto Monje
- Department of Periodontics and Oral Medicine, School of Dental Medicine, University of Michigan, Ann Arbor, MI, USA.,Department of Periodontology, Universidad Internacional de Catalunya, Barcelona, Spain
| | - José Nart
- Department of Periodontology, Universidad Internacional de Catalunya, Barcelona, Spain
| |
Collapse
|
20
|
da Fonseca GAMD, Cavalcanti MFXB, de Souza Maior JD, da Silva Pereira J, Pinto LA, Matias M, Frigo L. Laser-photobiomodulation on titanium implant bone healing in rat model: comparison between 660- and 808-nm wavelength. Lasers Med Sci 2022; 37:2179-2184. [PMID: 35028766 DOI: 10.1007/s10103-021-03481-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 11/26/2021] [Indexed: 10/19/2022]
Abstract
Laser-photobiomodulation (L-PBM) has been widely studied and its biomodulatory effects have been established on irradiated cells, increasing viability and proliferation and on damaged tissues. In addition, L-PBM may reduce and modulate the inflammatory process. The effect of 660-nm and 808-nm laser-photobiomodulation on bone repair around titanium dental implants placed in rat's femur was evaluated by histomorphometry. Twenty-seven Wistar rats were divided into 3 groups of nine animals: group C - non-irradiated control; group R - λ=660nm irradiated; and group IR - λ=808nm irradiated. Each group was further divided in 3 subgroups of three animals each, according to histomorphometry analysis in 3 days, 7 days, and 14 days after irradiation. Histological H.E.-stained slides were photographed, and bone matrix measured in new-formed bone area. Bone matrix histomorphometry analysis indicates that at 7 days in the irradiated groups (R and IR), a bigger area matrix was observed in relation to control group (C) (p=0.04 and p=0.048 respectively). On the other hand, at 14 days, control group (C) presented a bigger area than infrared irradiated (IR) (p=0.001) and red irradiated group (R) also showed a bigger area than infrared irradiated group (IR) (p=0.019). Histological analysis indicates that irradiated groups (R and IR) exhibited a faster bone tissue matrix production than control group.
Collapse
Affiliation(s)
| | | | - José Daniel de Souza Maior
- Experimental Surgery Department of Pernambuco Federal University, Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, PE, Cep 50670-901, Brazil
| | - Juliana da Silva Pereira
- Periodontology Program of Guarulhos University, praça Teresa Cristina 01, Guarulhos, São Paulo, SP, Cep 07023-070, Brazil
| | - Leandro Augusto Pinto
- Periodontology Program of Guarulhos University, praça Teresa Cristina 01, Guarulhos, São Paulo, SP, Cep 07023-070, Brazil
| | - Murilo Matias
- Implantology Program of Guarulhos University, praça Teresa Cristina 01, Guarulhos, São Paulo, Cep 07023-070, Brazil
| | - Lucio Frigo
- Implantology Program of Guarulhos University, praça Teresa Cristina 01, Guarulhos, São Paulo, Cep 07023-070, Brazil.
| |
Collapse
|
21
|
Liang S, Zheng J, Yuan F. Preliminary study on the osseointegration effects of contactless automated implant cavity preparation via femtosecond laser ablation. BIOMEDICAL OPTICS EXPRESS 2022; 13:82-92. [PMID: 35154855 PMCID: PMC8803009 DOI: 10.1364/boe.446602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/25/2021] [Accepted: 11/25/2021] [Indexed: 06/14/2023]
Abstract
Microrobots were used to control the femtosecond laser ablation of bone tissues to prepare implant cavities for dental implant surgery. The method was optimized through depth-of-cut experiments of ex vivo rabbit femurs, and the optimized method was used to prepare implant cavities on the left femurs of eight live rabbits. A power of 10 W and a scanning rate of 4000 mm/s were found to be optimal. After seven days of osteoinduction, the expression of collagen type I was significantly higher in the experimental group than in the control group (manually drilled implant cavities). The bone-implant contacts of the experimental group at 4 and 8 weeks were 9.65% and 23.08%, respectively.
Collapse
Affiliation(s)
- Shanshan Liang
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
- National Center of Stomatology & National Clinical Research Center for Oral Diseases, Beijing 100081, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing 100081, China
- Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
- NHC Research Center of Engineering and Technology for Computerized Dentistry, Beijing 100081, China
| | - Jianqiao Zheng
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
- National Center of Stomatology & National Clinical Research Center for Oral Diseases, Beijing 100081, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing 100081, China
- Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
- NHC Research Center of Engineering and Technology for Computerized Dentistry, Beijing 100081, China
| | - Fusong Yuan
- Center of Digital Dentistry/Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
- National Center of Stomatology & National Clinical Research Center for Oral Diseases, Beijing 100081, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing 100081, China
- Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
- NHC Research Center of Engineering and Technology for Computerized Dentistry, Beijing 100081, China
| |
Collapse
|
22
|
Park YS, Lee BA, Choi SH, Kim YT. Evaluation of failed implants and reimplantation at sites of previous dental implant failure: survival rates and risk factors. J Periodontal Implant Sci 2022; 52:230-241. [PMID: 35775698 PMCID: PMC9253280 DOI: 10.5051/jpis.2105020251] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/11/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Purpose The purpose of this study was to evaluate failed implants and reimplantation survival and to identify the relative risk factors for implant re-failure. Methods Ninety-one dental implants were extracted between 2006 and 2020 at the National Health Insurance Service Ilsan Hospital, including 56 implants in the maxilla and 35 implants in the mandible that were removed from 77 patients. Patient information (e.g., age, sex, and systemic diseases) and surgical information (e.g., the date of surgery and location of the implants and bone grafts) were recorded. If an implant prosthesis was used, prosthesis information was also recorded. Results In total, 91 first-time failed dental implants in 77 patients were analyzed. Of them, 69 implants in 61 patients received reimplantation after failure. Sixteen patients (22 implants) refused reimplantation or received reimplantation at a different site. Eight of the 69 reimplants failed again. The 1-year survival rate of the 69 reimplants was 89.4%. Age at reimplantation and smoking significantly increased the risk of reimplantation failure. However, a history of taking anti-thrombotic agents showed a statistically significant negative association with reimplantation failure. Of the failed implants, 66% showed early failure and 34% showed late failure of the initial implantation. All 8 re-failed implants showed early failure. Only 3 of these 8 failed reimplants were re-tried and the second reimplants all survived. Conclusions The total survival rate of implants, which included reimplants and second reimplants was 99.2%, although the survival rate of the initial implantations was 96.3%. Previous failure did not affect the success of the next trial. Reimplantation failure was more strongly affected by patient factors than by implant factors. Therefore, each patient’s specific factors need to be meticulously controlled to achieve successful reimplantation.
Collapse
Affiliation(s)
- Yu-Seon Park
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Bo-Ah Lee
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
| | - Young-Taek Kim
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| |
Collapse
|
23
|
Effect of Application of a Bio-Adhesive on the Removal Torque Value and Rotational Misfit at the Implant-Abutment Junction: An In Vitro Study. MATERIALS 2021; 14:ma14226832. [PMID: 34832236 PMCID: PMC8618869 DOI: 10.3390/ma14226832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 12/26/2022]
Abstract
The aim of this study was to assess the effect of application of a recently developed bio-adhesive (Impladhesive) to abutment screw threads on the removal torque value and rotational misfit at the implant–abutment junction. This in vitro study evaluated 20 implant fixtures and 20 straight abutments. Specimens were randomly divided into two groups (n = 10) with/without adhesive application. In the adhesive group, the abutment was dipped in Impladhesive before torquing. In the control group, the abutment was torqued conventionally without adhesive application. The removal torque value was recorded after completion of the cyclic loading of 500,000 cycles with 2 Hz frequency and 75 N load. Rotational misfit was recorded using a video measuring machine. After applying the torque, the change in the bisector angle on the abutment hex was recorded for each implant. The biocompatibility of Impladhesive was evaluated using a MTT cell vitality assay. Normal distribution of data was assessed using the Kolmogorov–Smirnov test. Data were analyzed using a t-test and Pearson’s correlation coefficient The application of Impladhesive at the implant–abutment interface resulted in significantly greater mean removal torque value compared to the control group (p = 0.008). In addition, the mean rotational misfit at the implant–abutment interface was significantly lower in the use of Impladhesive compared to the control group (p = 0.001). In addition, the cell vitality was found to be greater than 80% at all evaluated time points. It can be concluded that the application of Impladhesive on the abutment screw significantly decreased rotational misfit and increased the removal torque value. Future studies are needed to evaluate the efficacy of this bio-adhesive an in vivo setting.
Collapse
|
24
|
Immediate Restoration of Single-Piece Zirconia Implants: A Prospective Case Series-Long-Term Results after 11 Years of Clinical Function. MATERIALS 2021; 14:ma14226738. [PMID: 34832139 PMCID: PMC8621133 DOI: 10.3390/ma14226738] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The aim of this prospective case series was to evaluate single-piece zirconia implants restored with lithium disilicate CAD/CAM crowns through a long-term follow-up. METHODS In this trial, 20 one-piece zirconia implants were placed in 20 patients. Implants were restored (i) immediately with lithium disilicate CAD/CAM provisionals, and (ii) permanently four months after surgery. Patients were followed for 11 years. Clinical parameters and radiological measurements of the zirconia implants were assessed. For the statistical analysis, paired t-test was applied. RESULTS Four implants were counted as implant failure due to the loss of implant stability, resulting in a Kaplan-Meier survival rate of 80% up to 11 years. The mean bleeding on probing values were 19.1% (SD ± 13.1) and 18.2% (SD ± 17.6) 96 and 11 years after implant placement, respectively. The plaque index revealed a significant decrease over time (p < 0.001) with a value between 25.9% (SD ± 5.7) and 12.6% (SD ± 10.0) at baseline and 11-years follow-up respectively. The marginal bone level revealed a significant decrease 4, 8, and 11 years after implant insertion (p = 0.001, p = 0.019, and p = 0.027, respectively). CONCLUSIONS Immediately loaded zirconia single-piece implants showed a suitable success rate in clinical and radiographic outcomes.
Collapse
|
25
|
Hou J, Xiao Z, Liu Z, Zhao H, Zhu Y, Guo L, Zhang Z, Ritchie RO, Wei Y, Deng X. An Amorphous Peri-Implant Ligament with Combined Osteointegration and Energy-Dissipation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2103727. [PMID: 34569118 DOI: 10.1002/adma.202103727] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 07/18/2021] [Indexed: 06/13/2023]
Abstract
Progress toward developing metal implants as permanent hard-tissue substitutes requires both osteointegration to achieve load-bearing support, and energy-dissipation to prevent overload-induced bone resorption. However, in existing implants these two properties can only be achieved separately. Optimized by natural evolution, tooth-periodontal-ligaments with fiber-bundle structures can efficiently orchestrate load-bearing and energy dissipation, which make tooth-bone complexes survive extremely high occlusion loads (>300 N) for prolonged lifetimes. Here, a bioinspired peri-implant ligament with simultaneously enhanced osteointegration and energy-dissipation is presented, which is based on the periodontium-mimetic architecture of a polymer-infiltrated, amorphous, titania nanotube array. The artificial ligament not only provides exceptional osteoinductivity owing to its nanotopography and beneficial ingredients, but also produces periodontium-similar energy dissipation due to the complexity of the force transmission modes and interface sliding. The ligament increases bone-implant contact by more than 18% and simultaneously reduces the effective stress transfer from implant to peri-implant bone by ≈30% as compared to titanium implants, which as far as is known has not previously been achieved. It is anticipated that the concept of an artificial ligament will open new possibilities for developing high-performance implanted materials with increased lifespans.
Collapse
Affiliation(s)
- Junyu Hou
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Zuohui Xiao
- Department of Geriatric Dentistry, NMPA Key Laboratory for Dental Materials, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China
| | - Zengqian Liu
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China
| | - Hewei Zhao
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Yankun Zhu
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China
| | - Lin Guo
- Beijing Advanced Innovation Center for Biomedical Engineering, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Zhefeng Zhang
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, P. R. China
| | - Robert O Ritchie
- Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Yan Wei
- Department of Geriatric Dentistry, NMPA Key Laboratory for Dental Materials, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China
| | - Xuliang Deng
- Department of Geriatric Dentistry, NMPA Key Laboratory for Dental Materials, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing, 100081, P. R. China
| |
Collapse
|
26
|
Minetti E, Celko M, Contessi M, Carini F, Gambardella U, Giacometti E, Santillana J, Beca Campoy T, Schmitz JH, Libertucci M, Ho H, Haan S, Mastrangelo F. Implants Survival Rate in Regenerated Sites with Innovative Graft Biomaterials: 1 Year Follow-Up. MATERIALS 2021; 14:ma14185292. [PMID: 34576516 PMCID: PMC8472708 DOI: 10.3390/ma14185292] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/07/2021] [Accepted: 09/09/2021] [Indexed: 01/26/2023]
Abstract
In thirteen different dental clinics in Singapore, Spain, Czech Republic and Italy, 504 patients were selected, and 483 dental implants were placed in maxillary sites after alveolar socket preservation (ASP) procedures with an autologous demineralized tooth extracted as graft material from an innovative Tooth Transformer device was obtained. All procedures used were reported in n°638 Ethical Committee surgical protocol of University of Chieti and approved. After 4 months, at dental implant placing, bone biopsies were performed to evaluate the histologic outcomes, and 12 months after implant loading, global implant survival rate, failure percentage and peri-implant bone loss were detected. After ASP, only 27 post-operative complications were observed and after 4 months, bone biopsy histomorphometric analysis showed a high percentage of bone volume (BV) 43.58 (±12.09), and vital new bone (NB) 32.38 (±17.15) with an absence of inflammation or necrosis areas. Twelve months after loading, only 10 dental implants failed (2.3%), with a 98.2% overall implant survival rate, nine cases showed mucositis (1.8%) and eight showed peri-implantitis (1.6%). At mesial sites, 0.43 mm (±0.83) of bone loss around the implants was detected and 0.23 mm (±0.38) at the distal sites with an average value of 0.37 mm (±0.68) (p > 0.568). Several studies with a longer follow-up will be necessary to confirm the preliminary data observed. However, clinical results seem to suggest that the post-extraction socket preservation procedure using innovative demineralized autologous tooth-derived biomaterial may be a predictable procedure to produce new vital bone able to support dental implant rehabilitation of maxilla edentulous sites.
Collapse
Affiliation(s)
- Elio Minetti
- Department of Biomedical, Surgical, Dental Science, University of Milan, 20161 Milan, Italy
- Correspondence: (E.M.); (F.M.)
| | - Martin Celko
- Independent Researcher, 500 02 Hradec Kralove, Czech Republic;
| | | | - Fabrizio Carini
- Department School of Medicine and Surgery, University of Milano Bicocca, 20100 Milan, Italy;
| | | | - Edoardo Giacometti
- Department of Medical Sciences and Diagnostic Integrated, University of Genoa, 16121 Genova, Italy;
| | | | | | | | | | - Henrykim Ho
- Independent Researcher, Singapore 238863, Singapore; (H.H.); (S.H.)
| | - Simon Haan
- Independent Researcher, Singapore 238863, Singapore; (H.H.); (S.H.)
| | - Filiberto Mastrangelo
- Clinical and Experimental Medicine Department, School of Dentistry University of Foggia, 71122 Foggia, Italy
- Correspondence: (E.M.); (F.M.)
| |
Collapse
|
27
|
Cagna DR, Donovan TE, McKee JR, Eichmiller F, Metz JE, Albouy JP, Marzola R, Murphy KG, Troeltzsch M. Annual review of selected scientific literature: A report of the Committee on Scientific Investigation of the American Academy of Restorative Dentistry. J Prosthet Dent 2021; 126:276-359. [PMID: 34489050 DOI: 10.1016/j.prosdent.2021.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/22/2021] [Accepted: 06/22/2021] [Indexed: 11/26/2022]
Abstract
The Scientific Investigation Committee of the American Academy of Restorative Dentistry offers this review of the 2020 professional literature in restorative dentistry to inform busy dentists regarding noteworthy scientific and clinical progress over the past year. Each member of the committee brings discipline-specific expertise to this work to cover this broad topic. Specific subject areas addressed include prosthodontics; periodontics, alveolar bone, and peri-implant tissues; implant dentistry; dental materials and therapeutics; occlusion and temporomandibular disorders (TMDs); sleep-related breathing disorders; oral medicine and oral and maxillofacial surgery; and dental caries and cariology. The authors focused their efforts on reporting information likely to influence day-to-day dental treatment decisions with a keen eye on future trends in the profession. With the tremendous volume of dentistry and related literature being published today, this review cannot possibly be comprehensive. The purpose is to update interested readers and provide important resource material for those interested in pursuing greater detail. It remains our intent to assist colleagues in navigating the extensive volume of important information being published annually. It is our hope that readers find this work useful in successfully managing the dental patients they encounter.
Collapse
Affiliation(s)
- David R Cagna
- Professor, Associate Dean, Chair and Residency Director, Department of Prosthodontics, University of Tennessee Health Sciences Center College of Dentistry, Memphis, Tenn.
| | - Terence E Donovan
- Professor, Department of Comprehensive Oral Health, University of North Carolina School of Dentistry, Chapel Hill, NC
| | | | - Frederick Eichmiller
- Vice President and Science Officer, Delta Dental of Wisconsin, Stevens Point, Wis
| | | | - Jean-Pierre Albouy
- Assistant Professor of Prosthodontics, Department of Restorative Sciences, University of North Carolina School of Dentistry, Chapel Hill, NC
| | | | - Kevin G Murphy
- Associate Clinical Professor, Department of Periodontics, University of Maryland College of Dentistry, Baltimore, Md; Private practice, Baltimore, Md
| | - Matthias Troeltzsch
- Associate Professor, Department of Oral and Maxillofacial Surgery, Ludwig-Maximilians University of Munich, Munich, Germany; Private practice, Ansbach, Germany
| |
Collapse
|
28
|
Abdelhay N, Prasad S, Gibson MP. Failure rates associated with guided versus non-guided dental implant placement: a systematic review and meta-analysis. BDJ Open 2021; 7:31. [PMID: 34408127 PMCID: PMC8373900 DOI: 10.1038/s41405-021-00086-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 07/16/2021] [Accepted: 07/24/2021] [Indexed: 12/12/2022] Open
Abstract
Objective The purpose of the systematic review and meta-analysis was to evaluate implant failure rates and their association with guided and free-hand implant placement techniques. Materials and methods A literature search was conducted across PubMed, Medline via Ovid, Cochrane database, and Google Scholar. The search was completed in September 2020. Series of meta-analyses were conducted to compare implant failure rates with guided and free-hand techniques. Results A total of 3387 articles were identified from the electronic search. After applying the inclusion criteria, eight articles were selected for qualitative assessment and four for quantitative synthesis (meta-analysis). The included studies had a risk ratio of 0.29 (95% CI: 0.15, 0.58), P < 0.001 for the use of guided implant placement. Implant failure rates were affected by the different placement techniques indicated by the test for overall effect (Z = 3.53, P = 0.0004). The incidence of implant failure in guided surgery versus free-hand surgery was found to be 2.25% and 6.42%, respectively. Conclusion Both guided and free-hand implant placement techniques resulted in a high implant survival rate. However, implant failure rates were almost three times higher in the free-hand implant placement category. A guided implant placement approach is recommended for a successful outcome.
Collapse
Affiliation(s)
- Nancy Abdelhay
- Faculty of Medicine and Dentistry, Department of Dentistry, University of Alberta, Edmonton, AB, Canada.,Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Soni Prasad
- Graduate Prosthodontics, Marquette University School of Dentistry, Milwaukee, WI, USA
| | - Monica Prasad Gibson
- Faculty of Medicine and Dentistry, Division of Periodontology, University of Alberta, Edmonton, AB, Canada.
| |
Collapse
|
29
|
The Role of Biomaterials and Biocompatible Materials in Implant-Supported Dental Prosthesis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:3349433. [PMID: 34394378 PMCID: PMC8360736 DOI: 10.1155/2021/3349433] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 07/27/2021] [Indexed: 12/24/2022]
Abstract
The dental implant is one of the appropriate instances of the different dental materials and their application, which is the combined procedure of technology and science in physics, biomechanics, and surface chemistry from macroscale to nanoscale surface engineering and manufactured technologies. In recent decades, biomaterials in implant therapy promote bone response and biomechanical ability, which is long-term from surgical equipment to final prosthetic restoration. Biomaterials have a crucial role in rehabilitating the damaged structure of the tooth and supplying acceptable outcomes correlated with clinical performance. There are some challenges in implantation such as bleeding, mobility, peri-implant infections, and the solution associated with modern strategies which are regarded to biomaterials. Various materials have been known as promising candidates for coatings of dental implants which contain polyhydroxyalkanoates, calcium phosphate, carbon, bisphosphonates, hydroxyapatite, bone stimulating factors, bioactive glass, bioactive ceramics, collagen, chitosan, metal and their alloys, fluoride, and titanium/titanium nitride. It is pivotal that biomaterials should be biodegradable; for example, polyhydroxyalkanoates are biodegradable; also, they do not have bad effects on tissues and cells. Despite this, biomaterials have important roles in prosthetic conditions such as dental pulp regeneration, the healing process, and antibacterial and anti-inflammatory effects. In this review study, the role of biocompatible materials in dental implants is investigated in in vitro and in vivo studies.
Collapse
|
30
|
Antimicrobial Properties of Strontium Functionalized Titanium Surfaces for Oral Applications, A Systematic Review. COATINGS 2021. [DOI: 10.3390/coatings11070810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The aim of this systematic review was to assess the current scientific evidence of the antimicrobial potential of strontium (Sr) when used to functionalize titanium (Ti) for oral applications. Out of an initial list of 1081 potentially relevant publications identified in three electronic databases (MEDLINE via PubMed, Scopus, and Cochrane) up to 1 February 2021, nine publications based on in vitro studies met the inclusion criteria. The antimicrobial potential of Sr was investigated on different types of functionalized Ti substrates, employing different application methods. Nine studies reported on the early, i.e., 6–24 h, and two studies on the late, i.e., 7–28 days, antimicrobial effect of Sr, primarily against Staphylococcus aureus (S. aureus) and/or Escherichia coli (E. coli). Sr-modified samples demonstrated relevant early antimicrobial potential against S. aureus in three studies; only one of which presented statistical significance values, while the other two presented only the percentage of antimicrobial rate and biofilm inhibition. A relevant late biofilm inhibition potential against S. aureus of 40% and 10%—after 7 and 14 days, respectively—was reported in one study. Combining Sr with other metal ions, i.e., silver (Ag), zinc (Zn), and fluorine (F), demonstrated a significant antimicrobial effect and biofilm inhibition against both S. aureus and E. coli. Sr ion release within the first 24 h was generally low, i.e., below 50 µg/L and 0.6 ppm; however, sustained Sr ion release for up to 30 days, while maintaining up to 90% of its original content, was also demonstrated. Thus, in most studies included herein, Sr-functionalized Ti showed a limited immediate (i.e., 24 h) antimicrobial effect, likely due to a low Sr ion release; however, with an adequate Sr ion release, a relevant antimicrobial effect, as well as a biofilm inhibition potential against S. aureus—but not E. coli—was observed at both early and late timepoints. Future studies should assess the antimicrobial potential of Ti functionalized with Sr against multispecies biofilms associated with peri-implantitis.
Collapse
|
31
|
Leisner L, Kronsteiner D, Rammelsberg P. Effect of previous implant failure on the prognosis of subsequent implants: A retrospective study. Clin Oral Implants Res 2021; 32:863-870. [PMID: 33949012 DOI: 10.1111/clr.13762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/11/2021] [Accepted: 04/06/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To compare the long-term survival of dental implants placed in patients with and without a history of implant failure. MATERIAL AND METHODS Within a retrospective analysis, an experimental group was selected consisting of 59 patients with 137 implants placed after previous failure. The control group included 1,072 patients with 2,664 implants without previous failure. Kaplan-Meier curves were used to describe the group-specific long-term implant survival. Mixed-effects Cox regression models were applied to examine the effects of patient- and site-specific risk factors. To take multiple implants into account, a random intercept model was applied. RESULTS During the observation period of up to 15 years, 11 implants (8%) failed in the experimental group and 74 implants (2.5%) in the control group (p < .001). Five-year cumulative survival was 96.8% (95% CI 0.96-0.98) in the control group and 91.5% (95% CI 0.86-0.97) in the experimental group. The variables group assignment and simultaneous augmentation had a significant effect on survival, but this effect was lost in the random intercept model. The effect of implant location remained, whereby the risk of failure was five times lower for mandible implants, irrespective of group (p = .013; 95% CI 0.103-0.767; HR: 0.281). CONCLUSIONS Long-term implant survival was lower in the experimental group than in the control group. The effect of previous failure was negligible. However, a patient-specific "clustering effect" was observed. Irrespective of previous implant failure, the risk of long-term failure is two times higher for maxillary implants than for mandibular implants.
Collapse
Affiliation(s)
- Laura Leisner
- Department of Prosthodontics, Heidelberg University Hospital, University of Heidelberg, Heidelberg, Germany
| | - Dorothea Kronsteiner
- Institute of Medical Biometry and Informatics, Heidelberg University Hospital, University of Heidelberg, Heidelberg, Germany
| | - Peter Rammelsberg
- Department of Prosthodontics, Heidelberg University Hospital, University of Heidelberg, Heidelberg, Germany
| |
Collapse
|
32
|
Kaur M, Abou-Arraj RV, Lin CP, Geisinger ML, Geurs NC. A 5-year retrospective analysis of biologic and prosthetic complications associated with single-tooth endosseous dental implants: Practical applications. Clin Adv Periodontics 2021; 11:225-232. [PMID: 33829671 DOI: 10.1002/cap.10155] [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: 02/27/2020] [Accepted: 02/28/2021] [Indexed: 11/11/2022]
Abstract
FOCUSED CLINICAL QUESTION What are the key considerations of the incidence and timing for single-tooth implant complications, including early failure, biological complications, and prosthetic complications? SUMMARY Single-tooth dental implants have been shown to have a high overall survival rate, but implant complications affect patient satisfaction and may lead to costly and/or time-consuming repair and revision. Assessing the incidence and types of biologic and prosthetic complications and the timing of such complications is helpful so that the underlying causes can be addressed during the treatment planning process. Furthermore, identification of patient demographics, patient-, implant-, and site-specific factors associated with such complications may allow for more comprehensive risk assessment during treatment planning. CONCLUSIONS Overall, dental implants have a high survival rate. Identification of the incidence of both biologic and prosthetic complications and minimizing their impact in patients with dental implants is critical to overall implant success. Utilization of careful treatment planning and dental implant fixtures, surgical protocols, and prosthetic designs that reduce complication rates can improve patient acceptance and outcomes. Further research is necessary to fully assess complication rates and risk factors.
Collapse
Affiliation(s)
- Maninder Kaur
- Department of Periodontology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Ramzi V Abou-Arraj
- Department of Periodontology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Chee Paul Lin
- Center for Clinical and Translational Science, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Maria L Geisinger
- Department of Periodontology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Nicolaas C Geurs
- Department of Periodontology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| |
Collapse
|
33
|
Saad I, Salem S. Knowledge, awareness, and perception of dental students, interns, and freshly graduated dentists regarding dental implant complications in Saudi Arabia: a web-based anonymous survey. BMC Oral Health 2021; 21:161. [PMID: 33766004 PMCID: PMC7995726 DOI: 10.1186/s12903-021-01506-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 03/09/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND It is necessary for dental students and freshly graduated dentists to apply their education and practice to different clinical and preclinical procedures. The implant success rate and durability are high. Therefore, this study was designed to assess the level of knowledge, awareness and perception of dental students, interns and freshly graduated students regarding dental implant complications in Saudi Arabia. METHODS A cross-sectional study design using a web-based method was conducted at different dental institutions in Saudi Arabia from December 2019 to March 2020. Data were collected from all (n = 288) undergraduate students, interns and freshly graduated dentists using a pretested standardized self-administered web-based questionnaire that was prepared and circulated using a template provided by Google Forms (Google, Inc., USA). Descriptive statistics and chi-square tests were performed to analyse the data using SPSS (version 20). RESULTS A total of 288 participants completed the questionnaire, with a response rate of 83.4%. Of the total participants, 37.5% showed a good level of knowledge regarding dental implant procedures, and 38.9% showed the same level of knowledge regarding implant complications. The most important cause of complications associated with dental implants was case selection, which accounted for 54.17%. Most participants (58.33%) chose massive bone loss related to implant failure as the most common late dental complication, while 26.39% chose postoperative infection as the most common early dental complication. In addition, 30.56% of the participants selected screw loosening as the most frequent mechanical complication. However, lack of implant primary stability was the most common hard-tissue implant complication. Based on aesthetic and reversible complications, restorations that were too buccal or too palatal and prosthetic-related, respectively, were the least common dental implant complications. CONCLUSIONS The level of knowledge among participants regarding dental implant complications differed among the institutions participating in this study. This difference reflects a significant variation that necessitates reviewing and standardizing dental implant curricula among these institutions.
Collapse
Affiliation(s)
- Islam Saad
- Department of Periodontology and Oral Medicine, College of Dentistry, Qassim University, King Abdulaziz Road, Mulaidah, Buraidah, Qassim, 51452, Kingdom of Saudi Arabia.
| | - Suzan Salem
- Department of Maxillofacial Surgery and Diagnostic Science, College of Dentistry, Qassim University, King Abdulaziz Road, Mulaidah, Buraidah, Qassim, 51452, Kingdom of Saudi Arabia
| |
Collapse
|
34
|
Sesha MR, Sunduram R, Eid Abdelmagyd HA. Biomechanical Evaluation of Stress Distribution in Subcrestal Placed Platform-switched Short Dental Implants in D4 Bone: In Vitro Finiteelement Model Study. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2020; 12:S134-S139. [PMID: 33149444 PMCID: PMC7595558 DOI: 10.4103/jpbs.jpbs_44_20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 03/10/2020] [Accepted: 03/10/2020] [Indexed: 11/04/2022] Open
Abstract
The present study was carried out to assess stress distribution in the maxillary posterior bone region (D4 bone) with the help of a short platform switched subcrestal dental implants using the FEM model. Missing teeth surfaces related to the maxillary posterior region were stimulated. The bone model had a cancellous core of (0.5 mm) which represents D4 bone. A 7.5x4.6 mm screw type implant system with 3.5 platform switch abutment was selected. ANSYS WORKBENCH was used to model all the finite element structures. Force of 100 N was tested and adapted at an angle of 0º, 15º, 30º on the tooth model. Overall results from the current study showed that a high amount of stress was seen in cortical than in relation to cancellous bone. Stress values reduced from equicrestal to subcrestal (2 mm) placement of dental implants irrespective of angulation of load from 0o to 30o in both types of bone. However higher stress values were seen when force was applied in an oblique direction (30o) in comparison to a vertical load (0o). Least amount of stress was noticed when platform switched implants were placed 0.5 mm subcrestatlly irrespective of angulations of a load. Platform switched short subcrestal implants reduced the stress in the D4 cortical bone than in contrary equicrestal implant placement. This results in the preservation of marginal bone leading to implant success.
Collapse
Affiliation(s)
- Manchala R Sesha
- Department of Periodontics, College of Dentistry, Gulf Medical University, Ajman, UAE
| | - Rajashekar Sunduram
- Department of Periodontics, Rajah Muthiah Dental College & Hospital, Annamalai Nagar, Tamil Nadu, India
| | | |
Collapse
|
35
|
Loewenstein AG, Bidra AS, Balshi TJ. Management of Maxillary Cluster Implant Failures with Extra-Maxillary Implants: A Clinical Report. J Prosthodont 2020; 29:369-373. [PMID: 32304120 DOI: 10.1111/jopr.13178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 04/12/2020] [Accepted: 04/13/2020] [Indexed: 11/27/2022] Open
Abstract
Late cluster implant failures can be one of the most devasting outcomes of implant therapy for patients. It can have anatomic, functional, psychological and financial consequences for patients, and sometimes the loss of residual bone can preclude subsequent implant placement. Fortunately, management of cluster implant failures in the maxilla can be mitigated by using implant anchorage from remote sites like zygomatic and pterygoid regions. Few reports exist in the literature that have described the management of cluster implant failure using extra-maxillary implants such as zygomatic and pterygoid implants. This case report describes the management of a female patient with bruxism who experienced late cluster implant failure in the maxilla after 9 years of function with an overdenture. Due to the loss of residual bone, subsequent implant therapy involved the use of bilateral zygomatic, pterygoid and anterior maxillary implants, which were immediately loaded and thereafter used to support a complete arch fixed implant-supported zirconia prosthesis.
Collapse
Affiliation(s)
| | - Avinash S Bidra
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, Connecticut
| | | |
Collapse
|
36
|
Yang G, Chen L, Gao Y, Liu H, Dong H, Mou Y. Risk factors and reoperative survival rate of failed narrow‐diameter implants in the maxillary anterior region. Clin Implant Dent Relat Res 2019; 22:29-41. [PMID: 31797552 DOI: 10.1111/cid.12867] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/04/2019] [Accepted: 10/23/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Guangwen Yang
- Department of Oral Implantology Nanjing Stomatological Hospital, Medical School of Nanjing University Nanjing Jiangsu China
| | - Li Chen
- Department of Oral Implantology Nanjing Stomatological Hospital, Medical School of Nanjing University Nanjing Jiangsu China
| | - Ying Gao
- The 461 Clinical Department of the 964 Hospital of People's Liberation Army Changchun Jilin China
| | - Hui Liu
- Department of Oral Implantology Nanjing Stomatological Hospital, Medical School of Nanjing University Nanjing Jiangsu China
| | - Heng Dong
- Department of Oral Implantology Nanjing Stomatological Hospital, Medical School of Nanjing University Nanjing Jiangsu China
| | - Yongbin Mou
- Department of Oral Implantology Nanjing Stomatological Hospital, Medical School of Nanjing University Nanjing Jiangsu China
| |
Collapse
|
37
|
Chowdhary R, Sangolikar D, Mishra S. Masticatory overload due to areca nut chewing on dental implants. SAUDI JOURNAL FOR HEALTH SCIENCES 2019. [DOI: 10.4103/sjhs.sjhs_31_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
|