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Troeltzsch D, Neckel N, Neyer J, Preissner S, Raguse JD, Motzkus Y, Heiland M, Vach K, Nahles S. Clinical and social success in epithetic ear rehabilitation - Retrospectively evaluating the long-term survival of auricular implants. J Craniomaxillofac Surg 2024; 52:884-889. [PMID: 39019745 DOI: 10.1016/j.jcms.2024.02.003] [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: 08/16/2023] [Revised: 11/25/2023] [Accepted: 02/01/2024] [Indexed: 07/19/2024] Open
Abstract
PURPOSE The aim of this study was to evaluate existing staging recommendations for peri-implantitis and its applicability for auricular bone anchoring. MATERIALS AND METHODS In this cross-sectional study, 44 patients treated with 47 ear epitheses and 128 implants were analyzed over 191.6 months (mean). Peri-implant sulcus depth, sulcus fluid flow rate, and peri-implant skin reaction, as well as cleaning habits and patients' quality of life, were analyzed. Mixed effect linear and mixed effect ordered logistic regression models were used. RESULTS Two of the 128 implants were lost (1.6 %). A total of 14.5 % of all patients presented light erythemas, 19.4 % showed stage 2, 4.8 % stage 3, and 12.9 % an acute infection according to Holgers. A correlation between skin reaction and sulcus fluid flow rate was observed, when grouping patients with acute signs of inflammation. Concerning patient satisfaction, 58.1 % of the patients were highly satisfied with their epitheses, 39.5 % very satisfied, and one patient was just satisfied. Younger age correlated with lower satisfaction rates. CONCLUSION Implant-retained auricular epitheses are a safe, highly sufficient and satisfying way of extending ear reconstruction. Sulcus depth and skin reaction are quick and valuable assessment tools in auricular implants, but skin reaction alone was clinically insufficient to predict peri-implant pocket inflammation.
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Affiliation(s)
- D Troeltzsch
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. Dr. M. Heiland), Charité-Universitätsmedizin Berlin, Berlin, Germany.
| | - N Neckel
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. Dr. M. Heiland), Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - J Neyer
- Department of Oral and Maxillofacial Surgery, (Head: Dr. Dr. T. Teltzrow), Klinikum Ernst von Bergmann Gemeinnützige GmbH, Charlottenstraße 72, 14467, Potsdam, Germany
| | - Saskia Preissner
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. Dr. M. Heiland), Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - J-D Raguse
- Department of Oral and Maxillofacial Surgery, (Head: PD Dr. Dr. J-D Raguse), Fachklinik Hornheide, Dorbaumstrasse 300, 48157, Münster, Germany
| | - Y Motzkus
- Berliner Zentrum für Künstliche Gesichtsteile/ BZkG, Augustenburger Platz 1, 13353, Berlin, Germany
| | - M Heiland
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. Dr. M. Heiland), Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - K Vach
- Department of Operative Dentistry and Periodontology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - S Nahles
- Department of Oral and Maxillofacial Surgery, (Head: Prof. Dr. Dr. M. Heiland), Charité-Universitätsmedizin Berlin, Berlin, Germany
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Orhan ZD, Ciğerim L. A New Approach to Implant Stability Using a Flexible Synthetic Silicate-Additive Beta-Tricalcium Phosphate-Poly(D,L-lactide- co-caprolactone) Bone Graft: An In Vitro Study. Polymers (Basel) 2024; 16:1101. [PMID: 38675020 PMCID: PMC11054415 DOI: 10.3390/polym16081101] [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: 03/18/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The aim of this study was to evaluate the use of a flexible synthetic polymer bone graft to provide implant stability during implant placement in a dense cortical bone model. In the control group (Group 1), sockets were prepared on polyurethane blocks according to the standard implant socket drilling protocol; both oversizing and deepening were applied in Group 2; and only oversizing was applied in Group 3. In Groups 2 and 3, flexible synthetic polymer bone grafts were placed in the sockets prior to implant placement. The implants were placed at the bone level in all groups. The highest torque value obtained was recorded as the insertion torque. In this study, 75 implant sites were included across three groups. The torque values of the implants in the control group were significantly higher than those of the implants with the oversized and deepened sockets and the oversized-only sockets (p < 0.05; p < 0.01). The torque values of the implants with the oversized and deepened sockets were significantly higher than those of the implants with the oversized-only sockets (p < 0.01). In this study, a flexible synthetic polymer bone graft was shown to be effective in achieving implant stability in the management of implants where there has been a loss of primary stability.
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Affiliation(s)
| | - Levent Ciğerim
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Van Yuzuncu Yil University, 65090 Van, Turkey;
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Heimes D, Becker P, Pabst A, Smeets R, Kraus A, Hartmann A, Sagheb K, Kämmerer PW. How does dental implant macrogeometry affect primary implant stability? A narrative review. Int J Implant Dent 2023; 9:20. [PMID: 37405709 DOI: 10.1186/s40729-023-00485-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 06/21/2023] [Indexed: 07/06/2023] Open
Abstract
PURPOSE The macrogeometry of a dental implant plays a decisive role in its primary stability. A larger diameter, a conical shape, and a roughened surface increase the contact area of the implant with the surrounding bone and thus improve primary stability. This is considered the basis for successful implant osseointegration that different factors, such as implant design, can influence. This narrative review aims to critically review macro-geometric features affecting the primary stability of dental implants. METHODS For this review, a comprehensive literature search and review of relevant studies was conducted based on formulating a research question, searching the literature using keywords and electronic databases such as PubMed, Embase, and Cochrane Library to search for relevant studies. These studies were screened and selected, the study quality was assessed, data were extracted, the results were summarized, and conclusions were drawn. RESULTS The macrogeometry of a dental implant includes its surface characteristics, size, and shape, all of which play a critical role in its primary stability. At the time of placement, the initial stability of an implant is determined by its contact area with the surrounding bone. Larger diameter and a conical shape of an implant result in a larger contact area and better primary stability. But the linear relationship between implant length and primary stability ends at 12 mm. CONCLUSIONS Several factors must be considered when choosing the ideal implant geometry, including local factors such as the condition of the bone and soft tissues at the implant site and systemic and patient-specific factors such as osteoporosis, diabetes, or autoimmune diseases. These factors can affect the success of the implant procedure and the long-term stability of an implant. By considering these factors, the surgeon can ensure the greatest possible therapeutic success and minimize the risk of implant failure.
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Affiliation(s)
- Diana Heimes
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131, Mainz, Germany.
| | - Philipp Becker
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131, Mainz, Germany
- Department of Oral and Maxillofacial Surgery, Federal Armed Forces Hospital, Rübenacherstraße 170, 56072, Koblenz, Germany
| | - Andreas Pabst
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131, Mainz, Germany
- Department of Oral and Maxillofacial Surgery, Federal Armed Forces Hospital, Rübenacherstraße 170, 56072, Koblenz, Germany
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
- Department of Oral and Maxillofacial Surgery, Division of "Regenerative Orofacial Medicine", University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Annika Kraus
- Department of Prosthetic Dentistry, University Medical Center Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - Amely Hartmann
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131, Mainz, Germany
- Private Practice for Oral Surgery, Echterdinger Straße 7, 70794, Filderstadt, Germany
| | - Keyvan Sagheb
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - Peer W Kämmerer
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131, Mainz, Germany
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Vargas-Moreno VF, Ribeiro MCDO, Gomes RS, Faot F, Del Bel Cury AA, Marcello-Machado RM. Clinical performance of short and extrashort dental implants with wide diameter: A systematic review with meta-analysis. J Prosthet Dent 2023:S0022-3913(23)00010-0. [PMID: 36841707 DOI: 10.1016/j.prosdent.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 02/26/2023]
Abstract
STATEMENT OF PROBLEM Rehabilitation with wide-diameter reduced-length implants has become popular for patients with minimal vertical bone. However, a consensus on the benefits of this approach is lacking. PURPOSE The purpose of this systematic review with meta-analysis was to evaluate the influence of wide compared with regular diameter on the clinical performance of short (<10 mm) and extrashort (≤6 mm) dental implants used for rehabilitations with single crowns, fixed partial dentures, or both, in the posterior region. MATERIAL AND METHODS A search in 6 databases was conducted to select randomized controlled trials (RCTs) and nonrandomized controlled trials (N-RCTs). Five meta-analyses were performed, where the risk ratio (RR) was evaluated. The certainty of evidence was evaluated, and the risk of bias was determined from the Joanna Briggs Institute checklist. RESULTS Fourteen articles were included, 272 wide- and 478 regular-diameter implants. One study presented a low, 3 an unclear, and 11 a high risk of bias. Meta-analyses showed no statistical difference: implant survival, short dental implants in N-RCTs (up to 1 year - RR 1.01 [0.98; 1.03], 1 to 5 years - RR 1.01 [0.94; 1.08], more than 5 years - RR 1.01 [0.97; 1.06]), extrashort dental implants in N-RCTs (RR 1.04 [0.90; 1.20]), RCTs (RR 1.05 [0.88; 1.25]); implant success in N-RCTs (RR 1.01 [0.97; 1.05]); prosthesis success in N-RCTs (RR 1.01 [0.97; 1.05]). CONCLUSIONS Short and extrashort dental implants with a wide and regular diameter appear to be clinically appropriate options for implant-supported posterior restorations, with high survival, success, and prosthesis success rates.
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Affiliation(s)
- Vanessa Felipe Vargas-Moreno
- PhD student, Department of Prosthodontics and Periodontology; Piracicaba Dental School (UNICAMP), Piracicaba, SP, Brazil
| | | | - Rafael Soares Gomes
- Professor, Department of Prosthodontics, Faculty of Technology and Sciences (UniFTC), Salvador, BA, Brazil
| | - Fernanda Faot
- Professor, Department of Restorative Dentistry, Federal University of Pelotas, Pelotas (UFPel), RS, Brazil
| | - Altair Antoninha Del Bel Cury
- Professor, Department of Prosthodontics and Periodontology; Piracicaba Dental School (UNICAMP), Piracicaba, SP, Brazil
| | - Raissa Micaella Marcello-Machado
- Postdoctoral Research Fellow, Department of Prosthodontics and Periodontology; Piracicaba Dental School (UNICAMP), Piracicaba, SP, Brazil.
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Costa RC, Nagay BE, Dini C, Borges MHR, Miranda LFB, Cordeiro JM, Souza JGS, Sukotjo C, Cruz NC, Barão VAR. The race for the optimal antimicrobial surface: perspectives and challenges related to plasma electrolytic oxidation coating for titanium-based implants. Adv Colloid Interface Sci 2023; 311:102805. [PMID: 36434916 DOI: 10.1016/j.cis.2022.102805] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/01/2022] [Accepted: 10/20/2022] [Indexed: 01/24/2023]
Abstract
Plasma electrolytic oxidation (PEO) is a low-cost, structurally reliable, and environmentally friendly surface modification method for orthopedic and dental implants. This technique is successful for the formation of porous, corrosion-resistant, and bioactive coatings, besides introducing antimicrobial compounds easily. Given the increase in implant-related infections, antimicrobial PEO-treated surfaces have been widely proposed to surmount this public health concern. This review comprehensively discusses antimicrobial implant surfaces currently produced by PEO in terms of their in vitro and in vivo microbiological and biological properties. We present a critical [part I] and evidence-based [part II] review about the plethora of antimicrobial PEO-treated surfaces. The mechanism of microbial accumulation on implanted devices and the principles of PEO technology to ensure antimicrobial functionalization by one- or multi-step processes are outlined. Our systematic literature search showed that particular focus has been placed on the metallic and semi-metallic elements incorporated into PEO surfaces to facilitate antimicrobial properties, which are often dose-dependent, without leading to cytotoxicity in vitro. Meanwhile, there are concerns over the biocompatibility of PEO and its long-term antimicrobial effects in animal models. We clearly highlight the importance of using clinically relevant infection models and in vivo long-term assessments to guarantee the rational design of antimicrobial PEO-treated surfaces to identify the 'finish line' in the race for antimicrobial implant surfaces.
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Affiliation(s)
- Raphael C Costa
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Bruna E Nagay
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Caroline Dini
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Maria H R Borges
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Luís F B Miranda
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil
| | - Jairo M Cordeiro
- Department of Dentistry, Centro Universitário das Faculdades Associadas de Ensino (UNIFAE), Sāo Joāo da Boa Vista, Sāo Paulo 13870-377, Brazil
| | - Joāo G S Souza
- Dental Research Division, Guarulhos University, Guarulhos, Sāo Paulo 07023-070, Brazil; Dentistry Science School (Faculdade de Ciências Odontológicas - FCO), Montes Claros, Minas Gerais 39401-303, Brazil
| | - Cortino Sukotjo
- Department of Restorative Dentistry, University of Illinois at Chicago College of Dentistry, Chicago, IL 60612, USA
| | - Nilson C Cruz
- Laboratory of Technological Plasmas, Institute of Science and Technology, Sāo Paulo State University (UNESP), Sorocaba, Sāo Paulo 18087-180, Brazil
| | - Valentim A R Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sāo Paulo 13414-903, Brazil.
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Roy M, Corti A, Dorocka-Bobkowska B, Pompella A. Positive Effects of UV-Photofunctionalization of Titanium Oxide Surfaces on the Survival and Differentiation of Osteogenic Precursor Cells-An In Vitro Study. J Funct Biomater 2022; 13:jfb13040265. [PMID: 36547525 PMCID: PMC9783962 DOI: 10.3390/jfb13040265] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 11/30/2022] Open
Abstract
INTRODUCTION The UVC-irradiation ("UV-photofunctionalization") of titanium dental implants has proved to be capable of removing carbon contamination and restoring the ability of titanium surfaces to attract cells involved in the process of osteointegration, thus significantly enhancing the biocompatibility of implants and favoring the post-operative healing process. To what extent the effect of UVC irradiation is dependent on the type or the topography of titanium used, is still not sufficiently established. OBJECTIVE The present study was aimed at analyzing the effects of UV-photofunctionalization on the TiO2 topography, as well as on the gene expression patterns and the biological activity of osteogenic cells, i.e., osteogenic precursors cultured in vitro in the presence of different titanium specimens. METHODOLOGY The analysis of the surface roughness was performed by atomic force microscopy (AFM) on machined surface grade 2, and sand-blasted/acid-etched surface grades 2 and 4 titanium specimens. The expression of the genes related with the process of healing and osteogenesis was studied in the MC3T3-E1 pre-osteoblastic murine cells, as well as in MSC murine stem cells, before and after exposure to differently treated TiO2 surfaces. RESULTS The AFM determinations showed that the surface topographies of titanium after the sand-blasting and acid-etching procedures, look very similar, independently of the grade of titanium. The UVC-irradiation of the TiO2 surface was found to induce an increase in the cell survival, attachment and proliferation, which was positively correlated with an increased expression of the osteogenesis-related genes Runx2 and alkaline phosphatase (ALP). CONCLUSION Overall, our findings expand and further support the current view that UV-photofunctionalization can indeed restore biocompatibility and osteointegration of TiO2 implants, and suggest that this at least in part occurs through a stimulation of the osteogenic differentiation of the precursor cells.
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Affiliation(s)
- Marco Roy
- Department of Prosthodontics and Gerostomatology, Poznan University of Medical Sciences, 60-792 Poznan, Poland
- Correspondence:
| | - Alessandro Corti
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa Medical School, 56126 Pisa, Italy
| | - Barbara Dorocka-Bobkowska
- Department of Prosthodontics and Gerostomatology, Poznan University of Medical Sciences, 60-792 Poznan, Poland
| | - Alfonso Pompella
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa Medical School, 56126 Pisa, Italy
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Yu H, Qiu L. Analysis of fractured dental implant body from five different implant systems: a long-term retrospective study. Int J Oral Maxillofac Surg 2022; 51:1355-1361. [PMID: 35562314 DOI: 10.1016/j.ijom.2022.04.010] [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: 05/30/2021] [Revised: 04/16/2022] [Accepted: 04/21/2022] [Indexed: 10/18/2022]
Abstract
The aim of this study was to perform an analysis of the incidence of implant body fracture and to identify possible risk factors. A long-term follow-up retrospective evaluation of 3477 patients who received 8588 implants from five implant systems was performed. Overall, 2810 patients who received 7502 implants, with an average follow-up of 6.9 years, were included in the analysis. The overall body fracture rate was 0.49% (37/7502), among which 32.4% (12/37) were implants with a reduced diameter. The estimated cumulative fracture rate was 1.24%. Fractures were observed in two patients with three Brånemark implants, 13 patients with 15 Nobel Replace implants, eight patients with eight Camlog implants, eight patients with 11 Ankylos implants, and none of the patients with Thommen implants. Most fractures occurred in the molar region (29/37) and in single implant-supported restorations (30/37). The results showed significant differences between splinted and unsplinted restorations (P = 0.005) and between regular and narrow diameter implants (P = 0.009). Within the limitations of this retrospective analysis, a narrow implant diameter is a potential risk factor for implant body fracture in the posterior region. Furthermore, unsplinted restorations appear to be associated with a higher rate of implant fracture.
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Affiliation(s)
- H Yu
- Fourth Division Department, Peking University School and Hospital of Stomatology, Chaoyang District, Beijing, China.
| | - L Qiu
- Fourth Division Department, Peking University School and Hospital of Stomatology, Chaoyang District, Beijing, China.
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Huang X, Bai J, Liu X, Meng Z, Shang Y, Jiao T, Chen G, Deng J. Scientometric Analysis of Dental Implant Research over the Past 10 Years and Future Research Trends. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6634055. [PMID: 33954187 PMCID: PMC8057884 DOI: 10.1155/2021/6634055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/28/2021] [Accepted: 03/30/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND We conducted a bibliometrics analysis to explore the recent trends in dental implant research which could help researchers have a clear grasp of the relevant research hotspots and prospects. Material and Methods. Altogether, 15,770 articles on dental implants, from January 1, 2010, to October 31, 2019, were selected from the Web of Science Core Collection. We used BICOMB software to extract the high-frequency MeSH terms and construct binary and coword matrices. gCLUTO software was used for biclustering and visual analysis, Ucinet 6 software for social network analysis, SCIMAT software for strategic diagram building, Citespace 5.5 software to form timeline visualization, and VOSviewer software, eventually, for bibliometrics cocitation network. RESULTS Altogether, 72 high-frequency keywords were extracted from the selected articles and 4 clusters and 7 subcategories were identified through biclustering analysis in the dental implant research field. The use of the strategic diagram also enabled us to find the research hotspot and development trends. CONCLUSIONS The survival rate of dental implants and subsequent restoration have always been the core focus of research. Sinus floor elevation and guided bone regeneration are worthy of constant exploration owing to their reliability. With continuous improvement in technology, immediate loading could become a future research hot spot.
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Affiliation(s)
- Xin Huang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Tianjin Medical University, Tianjin, China
| | - Jin Bai
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Tianjin Medical University, Tianjin, China
| | - Xu Liu
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Tianjin Medical University, Tianjin, China
| | - Zhaosong Meng
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Tianjin Medical University, Tianjin, China
| | - Yuli Shang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Tianjin Medical University, Tianjin, China
| | - Tiejun Jiao
- Department of Oral Implantology, Stomatological Hospital of Tianjin Medical University, Tianjin, China
| | - Gang Chen
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital of Tianjin Medical University, Tianjin, China
| | - Jiayin Deng
- Department of Periodontics, Stomatological Hospital of Tianjin Medical University, Tianjin, China
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Haj Yahya B, Chaushu G, Hamzani Y. Computed Tomography for the Assessment of the Potential Risk After Implant Placement in Fresh Extraction Sites in the Posterior Mandible. J ORAL IMPLANTOL 2021; 47:2-8. [PMID: 32662837 DOI: 10.1563/aaid-joi-d-18-00227] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Immediate implant placement (IIP) is considered a reliable procedure, with survival rates of 94.9%-98.4%. Nevertheless, in the posterior mandible, it poses a high risk of damage to anatomic structures. The aim of this study was to determine the risk of anatomic structures injury associated with IIP in the posterior mandible based on apical primary stability, respecting a safe distance from the inferior alveolar nerve and lingual plate, and to evaluate the influence of different factors on those risks. Pre-extraction cone beam computed tomography scans of 100 patients were retrospectively analyzed. Measurements were taken from tooth apices to lingual plate and to mandibular canal. Values of <4 mm of the former and <6 mm of the latter were categorized as considerable risk. Values of <2 mm at both measurements were considered high risk. Two-sided P < .05 was considered statistically significant. Mean root-to-alveolar canal distance was 7.6 ± 2.7 mm in the first molar, 6.5 ± 3mm in the second premolar, and 5.4 ± 3 mm in the second molar (P < .005). The mean distance to the outer lingual cortex was 3.9 ± 2.1 mm in the first molar and 3.2 ± 0.1 mm in the second molar. Thus, second molars were at higher risk of inferior alveolar nerve injury and lingual plate perforation during IIP. Background factors associated with higher IIP risk were female sex and age < 40 years. In the mandible, the anatomic risk posed by IIP is greatest for second molars and lowest for first molars. Several background factors affect the distances between root apices and the mandibular canal.
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Affiliation(s)
- Bahaa Haj Yahya
- Department of Oral and Maxillofacial Surgery, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel
| | - Gavriel Chaushu
- Department of Oral and Maxillofacial Surgery, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel.,Department of Oral and Maxillofacial Surgery, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yafit Hamzani
- Department of Oral and Maxillofacial Surgery, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel
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Boboeva O, Kwon TG, Kim JW, Lee ST, Choi SY. Comparing factors affecting dental-implant loss between age groups: A retrospective cohort study. Clin Implant Dent Relat Res 2020; 23:208-215. [PMID: 33314636 DOI: 10.1111/cid.12967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 11/23/2020] [Accepted: 11/26/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND There is a growing interest in factors leading to implant failure in older people as the population aged 65 years or older continues to expand. PURPOSE We sought to identify differences of results in the implant survival rate and the influence of certain factors on implant failure in the older (≥65 years) and younger (<65 years) patients. MATERIALS AND METHODS Patients who underwent their first dental-implant surgery between July 2008 and June 2018 were included. Data on age, sex, smoking habits, medical conditions, implant location, implant size, and the presence and type of bone graft and membrane were collected and analyzed according to age group. Moreover, cumulative survival rates of implants (by Kaplan-Meier analysis) and hazard ratios (HR) of each factor (using Cox regression analysis with shared frailty) in each group were assessed and results compared between groups. RESULTS A total of 628 implants in 308 patients and 1904 implants in 987 patients in the older and younger groups, respectively, were assessed, with failure rates of 3.9% and 3.4%. Per Kaplan-Meier analysis, the 11-year patient-level cumulative survival rate of implant treatment was 95.3% (95% CI: 0.91-0.97) in the older and 93.9% (95% CI: 0.88-0.97) in the younger group. The HR for implant failure of the variables, except diameter of dental implants, were not statistically significant in both groups. CONCLUSION The outcomes of implant treatment were not considerably different between the age groups.
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Affiliation(s)
- Obida Boboeva
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - Tae-Geon Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - Jin-Wook Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - Sung-Tak Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - So-Young Choi
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, South Korea
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Mechanical analysis of a dental implant system under 3 contact conditions and with 2 mechanical factors. J Prosthet Dent 2019; 122:376-382. [PMID: 30948302 DOI: 10.1016/j.prosdent.2018.10.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 10/04/2018] [Accepted: 10/04/2018] [Indexed: 12/21/2022]
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Abstract
Data sources OVID Medline, EMBASE, and SCOPUS databases from 1991 till 2018. Manual search of the reference lists of review and related articles.Study selection Prospective and retrospective clinical studies reporting survival rate of dental implants placed at sites of failed implants. The selection was limited to studies that comprised at least 15 partially edentulous patients and 20 dental implants. Only papers published in English language were included.Data extraction and synthesis The first and second authors independently reviewed the literature and agreed on abstracted data. The Newcastle-Ottawa scale for cohort studies was used to assess quality and risk of bias in the selected studies. The primary outcome was the survival rate of replacement dental implants. The survival rate of replacement implants in relation to surface design (smooth versus rough) and implant sites (anterior versus posterior) were considered as secondary outcomes.Results The mean survival rate of replacement dental implants was 86.3%. The follow-up period ranged from less than one year to more than five years. Rough-surfaced implants showed a significantly higher survival rate compared to smooth-surfaced implants (90% versus 68.7%). It was not possible to assess the impact of patient- or treatment-related factors on survival rate of replacement dental implants.Conclusions Replacement dental implants have a high survival rate but it is less than that for initial implant placement. In retreatment, a higher survival rate is associated with rough-surfaced implants. It seems that initial implant failures are mostly related to modifiable risk factors.
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Hattingh A, De Bruyn H, Vandeweghe S. A retrospective study on ultra‐wide diameter dental implants for immediate molar replacement. Clin Implant Dent Relat Res 2019; 21:879-887. [DOI: 10.1111/cid.12759] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 03/06/2019] [Accepted: 03/07/2019] [Indexed: 12/26/2022]
Affiliation(s)
- André Hattingh
- Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health SciencesGhent University Gent Belgium
- Private Practice for Periodontology and Oral Implantology Sevenoaks United Kingdom
| | - Hugo De Bruyn
- Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health SciencesGhent University Gent Belgium
- Section Implantology and Periodontology, Department of DentistryRadboud University Medical Centre Nijmegen The Netherlands
| | - Stefan Vandeweghe
- Reconstructive DentistryDental School, Faculty of Medicine and Health Sciences, Ghent University Gent Belgium
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He RT, Tu MG, Huang HL, Tsai MT, Wu J, Hsu JT. Improving the prediction of the trabecular bone microarchitectural parameters using dental cone-beam computed tomography. BMC Med Imaging 2019; 19:10. [PMID: 30674282 PMCID: PMC6343305 DOI: 10.1186/s12880-019-0313-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 01/15/2019] [Indexed: 12/28/2022] Open
Abstract
Background In this study, we explored how various preprocessing approaches can be employed to enhance the capability of dental CBCT to accurately estimate trabecular bone microarchitectural parameters. Methods In total, 30 bovine vertebrae cancellous bone specimens were used for in study. Voxel resolution 18-μm micro-computed tomography (micro-CT) and 100-μm dental CBCT were used to scan each specimen. Micro-CT images were used to calculate trabecular bone microarchitectural parameters; the results were set as the gold standard. Subsequently, before the dental CBCT images were converted into binary images to calculate trabecular bone microarchitectural parameters, three preprocessing approaches were used to process the dental CBCT images. For Group 1, no preprocessing approach was applied. For Group 2, images were sharpened and despeckable noises were removed. For Group 3, the function of local thresholding was added to Group 2 to form Group 3. For Group 4, the air pixels was removed from Group 3 to form Group 4. Subsequently, all images were imported into a software package to estimate trabecular bone microarchitectural parameters (bone volume fraction (BV/TV), trabecular thickness (TbTh), trabecular number (TbN), and trabecular separation (TbSp)). Finally, a paired t-test and a Pearson correlation test were performed to compare the capability of micro-CT with the capability of dental CBCT for estimating trabecular bone microarchitectural parameters. Results Regardless of whether dental CBCT images underwent image preprocessing (Groups 1 to 4), the four trabecular bone microarchitectural parameters measured using dental CBCT images were significantly different from those measured using micro-CT images. However, after three image preprocessing approaches were applied to the dental CBCT images (Group 4), the BV/TV obtained using dental CBCT was highly positively correlated with that obtained using micro-CT (r = 0.87, p < 0.001); the correlation coefficient was greater than that of Group 1 (r = −0.15, p = 0.412), Group 2 (r = 0.16, p = 0.386), and Group 3 (r = 0.47, p = 0.006). After dental CBCT images underwent image preprocessing, the efficacy of using dental CBCT for estimating TbN and TbSp was enhanced. Conclusions Image preprocessing approaches can be used to enhance the efficacy of using dental CBCT for predicting trabecular bone microarchitectural parameters.
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Affiliation(s)
- Rong-Ting He
- School of Dentistry, College of Dentistry, China Medical University, Taichung, 404, Taiwan, Republic of China
| | - Ming-Gene Tu
- School of Dentistry, College of Dentistry, China Medical University, Taichung, 404, Taiwan, Republic of China.,Department of Dentistry, China Medical University and Hospital, 91 Hsueh-Shih Road, Taichung, 404, Taiwan, Republic of China
| | - Heng-Li Huang
- School of Dentistry, College of Dentistry, China Medical University, Taichung, 404, Taiwan, Republic of China.,Department of Bioinformatics and Medical Engineering, Asia University, Taichung, 413, Taiwan, Republic of China
| | - Ming-Tzu Tsai
- Department of Biomedical Engineering, Hungkuang University, Taichung, 433, Taiwan, Republic of China
| | - Jay Wu
- Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei, 112, Taiwan, Republic of China.
| | - Jui-Ting Hsu
- School of Dentistry, College of Dentistry, China Medical University, Taichung, 404, Taiwan, Republic of China. .,Department of Bioinformatics and Medical Engineering, Asia University, Taichung, 413, Taiwan, Republic of China.
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15
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Subirà-Pifarré C, Masuet-Aumatell C, Rodado Alonso C, Medina Madrid R, Galletti C. Assessment of Dental Implants with Modified Calcium-Phosphate Surface in a Multicenter, Prospective, Non-Interventional Study: Results up to 50 Months of Follow-Up. J Funct Biomater 2019; 10:jfb10010005. [PMID: 30641939 PMCID: PMC6463049 DOI: 10.3390/jfb10010005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/03/2019] [Accepted: 01/04/2019] [Indexed: 12/19/2022] Open
Abstract
Prescription of implant treatments is very widespread at present, mainly due to the low rate of annual loss and, to date, few studies have assessed their survival in the routine clinical practice of dentistry. The purpose of this observational study was to evaluate the effectiveness of dental implants with a calcium-phosphate surface in the daily practice of dental clinics. A multicenter, prospective, non-interventional, observational study was performed, in which three experienced practitioners (one maxillofacial and two oral surgeons) inserted implants using standard external and internal hexagon connections in adult patients requiring ≥1 osseointegrated implants to replace missing teeth. Follow-up was performed for 24 months after implant loading. Two hundred and twelve subjects were included (51.5% men), with a mean age of 51.2 ± 11.90 years, in whom 544 implants were inserted. 87.2% of the patients received 1–4 implants. The preferred connection system was internal hexagon (73.5%). There were nine failures, with an interval survival rate (ISR) at 24 months of 100% and a cumulative survival rate (CSR) of 98.3%. In conclusion, implants with a modified calcium-phosphate surface are associated with a high rate of survival and may be considered a method of choice in clinical practice.
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Affiliation(s)
- Carles Subirà-Pifarré
- Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, 08907 Catalonia, Spain.
- Comprehensive Dentistry Department, Faculty of Dentistry, Universitat de Barcelona, L'Hospitalet de Llobregat (Barcelona), 08907 Catalonia, Spain.
| | - Cristina Masuet-Aumatell
- Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, 08907 Catalonia, Spain.
- Preventive Medicine Department, University Hospital of Bellvitge, IDIBELL, L'Hospitalet de Llobregat (Barcelona), 08907 Catalonia, Spain.
| | | | | | - Cosimo Galletti
- Comprehensive Dentistry Department, Faculty of Dentistry, Universitat de Barcelona, L'Hospitalet de Llobregat (Barcelona), 08907 Catalonia, Spain.
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16
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Leão RS, Moraes SLD, Vasconcelos BCE, Lemos CAA, Pellizzer EP. Splinted and unsplinted overdenture attachment systems: A systematic review and meta-analysis. J Oral Rehabil 2018; 45:647-656. [PMID: 29761853 DOI: 10.1111/joor.12651] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2018] [Indexed: 12/01/2022]
Abstract
Splinted and unsplinted overdenture attachment systems have unique advantages and disadvantages. The aim of the present systematic review was to determine the influence of splinted and unsplinted overdenture attachment systems on the marginal bone loss, prosthetic complications and implant survival rate. PubMed/MEDLINE, Scopus and Cochrane databases were searched for articles published up to October 2017, using the following search terms: "overdenture AND attachment OR overdenture AND bar OR overdenture splinted." The PICO question "Do splinted overdenture attachment systems promote better clinical results in comparison to unsplinted systems?" was evaluated. Eligible studies included randomized controlled clinical trials, prospective studies with at least 10 participants and a minimum follow-up of 6 months, and studies published in English that compared splinted and unsplinted attachment systems within the same study. The 95% confidence interval (CI) was considered for all outcomes analysed. After completion of the different steps in the article selection process, nine articles were included in the qualitative and quantitative analyses. A total of 984 implants were placed in 380 patients (mean age: 62.8 years). The meta-analysis demonstrated no statistically significant differences between splinted and unsplinted attachment systems with regard to marginal bone loss (P = .39; MD: -0.11; 95% CI: -0.37 to 0.14), complications (P = .31; RR: 1.26; CI: 0.80-1.99) and implant survival rate (P = .14; RR: 0.37% CI: 0.10-1.36). In addition, splinted and unsplinted overdenture attachment systems achieved similar results with regard to marginal bone loss, prosthetic complications and implant survival rate.
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Affiliation(s)
- R S Leão
- Department of Prosthodontics, Dentistry School, University of Pernambuco (UPE), Recife, Brazil
| | - S L D Moraes
- Department of Prosthodontics, Dentistry School, University of Pernambuco (UPE), Recife, Brazil
| | - B C E Vasconcelos
- Department of Oral and Maxillofacial Surgery, Dentistry School, University of Pernambuco (UPE), Recife, Brazil
| | - C A A Lemos
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, São Paulo State University (UNESP), Araçatuba, Brazil
| | - E P Pellizzer
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, São Paulo State University (UNESP), Araçatuba, Brazil
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Abstract
Systematic reviews of literature over the period between 2008 and 2017 are discussed regarding clinical evidence for the factors affecting survival and failure of dental implants. The factors addressed include publication bias, tooth location, insertion torque, collar design, implant-abutment connection design, implant length, implant width, bone augmentation, platform switching, surface roughness, implant coatings, and the use of ceramic materials in the implant body and abutment.
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Affiliation(s)
- Jason A Griggs
- Biomedical Materials Science, The University of Mississippi Medical Center School of Dentistry, 2500 North State Street, Room D528, Jackson, MS 39216-4505, USA.
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18
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Annual review of selected scientific literature: Report of the committee on scientific investigation of the American Academy of Restorative Dentistry. J Prosthet Dent 2017; 118:281-346. [DOI: 10.1016/j.prosdent.2017.04.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 04/27/2017] [Accepted: 04/27/2017] [Indexed: 01/19/2023]
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19
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Seemann R, Jirku A, Wagner F, Wutzl A. What do sales data tell us about implant survival? PLoS One 2017; 12:e0171128. [PMID: 28222128 PMCID: PMC5319692 DOI: 10.1371/journal.pone.0171128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/30/2016] [Indexed: 11/19/2022] Open
Abstract
Objective The aim of this study was to evaluate the influence of implant diameter, length and shape on a surrogate parameter of implant survival; i.e. the implant return rate in a big data analysis. Materials and methods A retrospective study was conducted and the factors influencing the success rates of 69,377 sold implants over a seven-year period were evaluated. The osseointegration program of a reseller provides reliable data of a single country. Implant loss rates were investigated using logistic regression models and regressed by implant type, diameter, and length. Results The return rate of 69,377 sold implants was 2.78% and comparable to implant loss rates in previous published prospective studies as its surrogate parameter. A total of 80% of implant returns had occurred within 157 days, and an additional 15% within 750.25 days. Diameters of 3.8 to 5.0mm showed the lowest return rates with its bottom in the 4.3mm implant whilst 6.0mm implants had significantly higher return rates. In comparison to the most sold implant length (13mm) shorter implants showed significantly higher early return rates. Conclusions The study provides evidence that in cases of standard indications and sufficient bone, the use of screw typed dental implants with 3.8 or 4.3 diameter and 11 or 13 mm length shows the lowest implant return rates. Other implants may be selected only in specific indications.
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Affiliation(s)
- Rudolf Seemann
- University Clinic of Cranio-, Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria
- * E-mail:
| | | | - Florian Wagner
- University Clinic of Cranio-, Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria
| | - Arno Wutzl
- University Clinic of Cranio-, Maxillofacial and Oral Surgery, Medical University of Vienna, Vienna, Austria
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20
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Sampaio Fernandes M, Vaz P, Braga AC, Sampaio Fernandes JC, Figueiral MH. The role of IL-1 gene polymorphisms (IL1A, IL1B, and IL1RN) as a risk factor in unsuccessful implants retaining overdentures. J Prosthodont Res 2017; 61:439-449. [PMID: 28223139 DOI: 10.1016/j.jpor.2017.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 10/19/2016] [Accepted: 01/17/2017] [Indexed: 11/18/2022]
Abstract
PURPOSE Implant-supported overdentures are an alternative predictable rehabilitation method that has a high impact on improving the patient's quality of life. However, some biological complications may interfere with the maintenance and survival of these overdenture implants. The goal of this article was to assess the factors that affect peri-implant success, through a hypothetical prediction model for biological complications of implant overdentures. METHODS A retrospective observational, prevalence study was conducted in 58 edentulous Caucasian patients rehabilitated with implant overdentures. A total of 229 implants were included in the study. Anamnestic, clinical, and implant-related parameters were collected and recorded in a single database. "Patient" was chosen as the unit of analysis, and a complete screening protocol was established. The data analytical study included assessing the odds ratio, concerning the presence or absence of a particular risk factor, by using binary logistic regression modeling. Probability values (p values) inferior to 0.05 were considered as representing statistically significant evidence. RESULTS The performed prediction model included the following variables: mean probing depth, metal exposure, IL1B_allele2, maxillary edentulousness, and Fusobacterium nucleatum. The F. nucleatum showed significant association with the outcome. Introducing a negative coefficient appeared to prevent complications or even boost the biological defense when associated with other factors. CONCLUSIONS The prediction model developed in this study could serve as a basis for further improved models that would assist clinicians in the daily diagnosis and treatment planning practice of oral rehabilitation with implant overdentures.
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Affiliation(s)
| | - Paula Vaz
- Department of Orofacial Genetics, Faculty of Dental Medicine of the University of Porto, Portugal.
| | - Ana Cristina Braga
- Department of Production and Systems Engineering-Algoritmi Centre, University of Minho, Braga, Portugal.
| | | | - Maria Helena Figueiral
- Department of Removable Prosthesis, Faculty of Dental Medicine of the University of Porto, Portugal.
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Consecutive Case Series of Healed Single-Molar Sites Immediately Restored with Wide-Diameter Implants: A 1-Year Evaluation. Int J Dent 2016; 2016:5645892. [PMID: 27195008 PMCID: PMC4852344 DOI: 10.1155/2016/5645892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 03/03/2016] [Accepted: 03/20/2016] [Indexed: 11/18/2022] Open
Abstract
Introduction. To evaluate outcomes of wide-diameter (6 mm) implants immediately provisionalized with cement-retained single crowns in posterior molar sites. Materials and Methods. Forty-eight consecutive patients received a total of 53 moderately rough-surface, 6 mm diameter implants in healed sites. All implants were immediately provisionalized with a cement-retained provisional crown. Final prosthesis with cement-retained porcelain fused to metal crowns was delivered 3–6 months later. Patients were followed up for 1 year. Outcome measures were implant failures and success rate, complications, marginal bone levels, bone level changes, papilla index, bleeding on probing, and inflammation. Results. One patient was lost to follow-up. At one year, the implant survival and success rate were 98.1%. The mean marginal bone loss after 1 year was −0.17 ± 1.84 mm. Ideal papilla score was recorded at 83.8% of the sites. More than 95.6% of the sites showed no bleeding or inflammation. No procedure-related or device-related adverse events were reported. Conclusion. Wide-diameter (6 mm) implants can safely and successfully replace single posterior molars. Longer follow-up studies are necessary to evaluate the long-term success of these implants.
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