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Schimmel M, Janner SFM, Joda T, Wittneben JG, McKenna G, Brägger U. Mandibular implant-supported fixed complete dental prostheses on implants with ultrashort and standard length: A pilot treatment. J Prosthet Dent 2020; 126:137-143. [PMID: 32736866 DOI: 10.1016/j.prosdent.2020.04.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 04/17/2020] [Accepted: 04/17/2020] [Indexed: 11/18/2022]
Abstract
Edentulous patients may be restored with complete-arch implant-supported fixed complete dental prostheses (IFCDPs) on angled distal implants or on parallel implants distributed equally across the mandible to increase the area of support. A treatment is presented to introduce the clinical concept of providing edentulous patients with an implant-supported fixed complete dental prosthesison parallel tissue-level implants in the mandible with standard length implants interforaminally and ultrashort implants distally. A structured prosthetic approach was used for the tooth arrangement with a modified workflow as per the Biofunctional Prosthetic System adapted for static computer-aided implant surgery (s-CAIS) and computer-aided design and computer-aided manufacturing (CAD-CAM) of the screw-retained implant-supported fixed complete dental prosthesis. The concept offered advantages in challenging anatomic, surgical, and prosthetic conditions; providing distal nonangled abutments and implant platforms, which were straightforward to clean. If necessary, the prosthesis could have been easily converted into a removable overdenture using the existing digital prosthetic arrangement. Should implant removal be required, the extrashort implants can be removed with minimal surgical risk or morbidity.
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Affiliation(s)
- Martin Schimmel
- Full Professor, Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland.
| | - Simone F M Janner
- Senior Lecturer, Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Tim Joda
- Associate Professor, Department of Reconstructive Dentistry, University Center for Dental Medicine, Basel, Switzerland
| | - Julia G Wittneben
- Senior Lecturer, Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Gerald McKenna
- Senior Lecturer, Centre for Public Health, Institute of Clinical Sciences Block B, Queens University Belfast, Belfast, United Kingdom
| | - Urs Brägger
- Full Professor, Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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52
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Pilawski I, Tulu US, Ticha P, Schüpbach P, Traxler H, Xu Q, Pan J, Coyac BR, Yuan X, Tian Y, Liu Y, Chen J, Erdogan Y, Arioka M, Armaro M, Wu M, Brunski JB, Helms JA. Interspecies Comparison of Alveolar Bone Biology, Part I: Morphology and Physiology of Pristine Bone. JDR Clin Trans Res 2020; 6:352-360. [PMID: 32660303 DOI: 10.1177/2380084420936979] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Few interspecies comparisons of alveolar bone have been documented, and this knowledge gap raises questions about which animal models most accurately represent human dental conditions or responses to surgical interventions. OBJECTIVES The objective of this study was to employ state-of-the-art quantitative metrics to directly assess and compare the structural and functional characteristics of alveolar bone among humans, mini pigs, rats, and mice. METHODS The same anatomic location (i.e., the posterior maxillae) was analyzed in all species via micro-computed tomographic imaging, followed by quantitative analyses, coupled with histology and immunohistochemistry. Bone remodeling was evaluated with alkaline phosphatase activity and tartrate-resistant acid phosphatase staining to identify osteoblast and osteoclast activities. In vivo fluorochrome labeling was used as a means to assess mineral apposition rates. RESULTS Collectively, these analyses demonstrated that bone volume differed among the species, while bone mineral density was equal. All species showed a similar density of alveolar osteocytes, with a highly conserved pattern of collagen organization. Collagen maturation was equal among mouse, rat, and mini pig. Bone remodeling was a shared feature among the species, with morphologically indistinguishable hemiosteonal appearances, osteocytic perilacunar remodeling, and similar mineral apposition rates in alveolar bone. CONCLUSIONS Our analyses demonstrated equivalencies among the 4 species in a plurality of the biological features of alveolar bone. Despite contradictory results from older studies, we found no evidence for the superiority of pig models over rodent models in representing human bone biology. KNOWLEDGE TRANSFER STATEMENT Animal models are extensively used to evaluate bone tissue engineering strategies, yet there are few state-of-the-art studies that rigorously compare and quantify the factors influencing selection of a given animal model. Consequently, there is an urgent need to assess preclinical animal models for their predictive value to dental research. Our article addresses this knowledge gap and, in doing so, provides a foundation for more effective standardization among animal models commonly used in dentistry.
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Affiliation(s)
- I Pilawski
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - U S Tulu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - P Ticha
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - P Schüpbach
- Schupbach Ltd, Service and Research Laboratory, Thalwil, Switzerland
| | - H Traxler
- Center of Anatomy and Cell Biology, Division of Anatomy, Medical University of Vienna, Vienna, Austria
| | - Q Xu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - J Pan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - B R Coyac
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - X Yuan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - Y Tian
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - Y Liu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - J Chen
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - Y Erdogan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - M Arioka
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA.,Department of Clinical Pharmacology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M Armaro
- Nobel Biocare Services AG, Zürich-Flughafen, Switzerland
| | - M Wu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - J B Brunski
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
| | - J A Helms
- Division of Plastic and Reconstructive Surgery, Department of Surgery, School of Medicine, Stanford University, Stanford, CA, USA
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53
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Implant-Supported Prosthetic Therapy of an Edentulous Patient: Clinical and Technical Aspects. PROSTHESIS 2020. [DOI: 10.3390/prosthesis2030013] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The purpose of this article is to show how to implement an implant-supported prosthetic overdenture using a digital workflow. Esthetic previewing using a specific software, guided-surgery, construction of the prosthesis, and the esthetic finalization are described in this article. Patients suffering from severe loss of bone and soft tissue volume could benefit from the construction of an overdenture prosthesis as a feasible therapeutic choice for functional and esthetic issues of the patient.
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54
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Ehlicke F, Berndt J, Marichikj N, Steinmüller-Nethl D, Walles H, Berndt EU, Hansmann J. Biomimetic in vitro test system for evaluation of dental implant materials. Dent Mater 2020; 36:1059-1070. [PMID: 32546398 DOI: 10.1016/j.dental.2020.04.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 04/25/2020] [Accepted: 04/30/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Before application in dental practice, novel dental materials are tested in vitro and in vivo to ensure safety and functionality. However, transferability between preclinical and clinical results is often limited. To increase the predictive power of preclinical testing, a biomimetic in vitro test system that mimics the wound niche after implantation was developed. METHODS First, predetermined implant materials were treated with human blood plasma, M2 macrophages and bone marrow stromal stem cells. Thereby, the three-dimensional wound niche was simulated. Samples were cultured for 28 days, and subsequently analyzed for metabolic activity and biomineralization. Second test level involved a cell-infiltrated bone substitute material for an osseointegration assay to measure mechanical bonding between dental material and bone. Standard and novel dental materials validated the developed test approach. RESULTS The developed test system for dental implant materials allowed quantification of biomineralization on implant surface and assessment of the functional stability of mineralized biomaterial-tissue interface. Human blood plasma, M2 macrophages and bone marrow stromal stem cells proved to be crucial components for predictive assessment of implant materials in vitro. Biocompatibility was demonstrated for all tested materials, whereas the degree of deposited mineralized extracellular matrix and mechanical stability differed between the tested materials. Highest amount of functional biomineralization was determined to be on carbon-coated implant surface. SIGNIFICANCE As an ethical alternative to animal testing, the established in vitro dental test system provides an economic and mid-throughput evaluation of novel dental implant materials or modifications thereof, by applying two successive readout levels: biomineralization and osseointegration.
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Affiliation(s)
- Franziska Ehlicke
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine, Roentgenring 11, 97070 Wuerzburg, Germany.
| | - Jonathan Berndt
- Natural Dental Implants AG, Edisonstrasse 63, 12459 Berlin, Germany.
| | - Nina Marichikj
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine, Roentgenring 11, 97070 Wuerzburg, Germany.
| | | | - Heike Walles
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine, Roentgenring 11, 97070 Wuerzburg, Germany; Fraunhofer Institute for Silicate Research ISC, Translational Center Regenerative Therapies, Roentgenring 11, 97070 Wuerzburg, Germany.
| | | | - Jan Hansmann
- University Hospital Wuerzburg, Department Tissue Engineering and Regenerative Medicine, Roentgenring 11, 97070 Wuerzburg, Germany; Fraunhofer Institute for Silicate Research ISC, Translational Center Regenerative Therapies, Roentgenring 11, 97070 Wuerzburg, Germany.
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Current Trends in Research on Bone Regeneration: A Bibliometric Analysis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8787394. [PMID: 32685539 PMCID: PMC7273498 DOI: 10.1155/2020/8787394] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 04/12/2020] [Accepted: 04/29/2020] [Indexed: 12/12/2022]
Abstract
Background Bone regeneration is a frequent research topic in clinical studies, but macroscopic studies on the clinical application of bone regeneration are rare. We conducted a bibliometric analysis, using international databases, to explore the clinical application and mechanism of bone regeneration, to highlight the relevant research hotspots and prospects. Material and Methods. Scientific reports on bone regeneration published during 2009–2019 were retrieved from PubMed. VOSviewer for cooccurrence keywords and authorship analysis. BICOMB software was used to retrieve high-frequency words and construct a text/coword matrix. The matrix was inputted into gCLUTO software, managed by biclustering analysis, in order to identify hotspots, which could achieve mountain and matrix visualizations. The matrix was also analyzed by using Ucinet 6 software for social network analysis. A strategic diagram was used for further analysis of the research hotspots of bone regeneration by “SCIMAT” software. We searched the Web of Science for relevant articles. Results Eighty-nine high-frequency major MeSH terms were obtained from 10237 articles and were divided into 5 clusters. We generated a network visualization map, an overlay visualization mountain map, and a social network diagram. Then, the MeSH terms were subdivided into 7 categories according to each diagram; current research hotspots were identified as scaffold, drug effect, osseointegration in dental implant, guided bone regeneration, factors impacting bone regeneration, treatment of bone and tissue loss, and bone regeneration in dental implants. Conclusion BICOMB, VOSviewer, and other bibliometric tools revealed that dental implants, scaffolds, and factors impacting bone regeneration are hot research topics, while scaffolds also hold promise from the perspective of bone tissue regeneration.
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Wang XH, Liu AP, Deng WZ. [Research advances in the use of digital surgical guides in implantology]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2020; 38:95-100. [PMID: 32037774 DOI: 10.7518/hxkq.2020.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dental implants have become the main choice for patients to fill in their missing teeth. A precise placement is the basis for a functional and aesthetic restoration. A digital surgical guide is a carrier that transfers the preoperative plan of dental implants to the actual surgery. This paper provides some references that can help clinicians improve the accuracy of implant surgery by stating the development, classification, advantages and disadvantages, and factors that affect the accuracy of digital guides.
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Affiliation(s)
- Xiao-Hua Wang
- Dept. of Stomatology, Wuzhou Red Cross Hospital, Wuzhou 543000, China;School of Stomatology, Youjiang Medical University for Nationalities, Baise 533000, China
| | - Ai-Peng Liu
- Dept. of Stomatology, Wuzhou Red Cross Hospital, Wuzhou 543000, China
| | - Wen-Zheng Deng
- Dept. of Stomatology, Wuzhou Red Cross Hospital, Wuzhou 543000, China
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57
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Menchini-Fabris GB, Marconcini S, Giammarinaro E, Barone A, Toti P, Covani U. Extension implants in the atrophic posterior maxilla: 1-year results of a retrospective case-series. J Dent Sci 2020; 15:9-13. [PMID: 32256994 PMCID: PMC7109493 DOI: 10.1016/j.jds.2018.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/13/2018] [Indexed: 10/27/2022] Open
Abstract
Background/purpose Blade implants account for one of the most debated dental implants design in scientific literature. They have been reconsidered by clinicians since their re-classification by Food and Drug Administration in 2014. Materials and methods The present study aimed to evaluate the outcome of newly manufactured extension implants in the treatment of moderate atrophic posterior maxillae. All the patients enrolled in the present retrospective case series study showed a moderate bone atrophy in the posterior maxilla with a maximum residual height ranging between 4 mm and 8 mm. Implants were inserted with the aid of an electro-magnetic device, and then they covered with screws and left healing. Three months after, implants were exposed and loaded. Results Difference between the marginal bone level at the 3-month evaluation (5.57 ± 0.67 mm) and that at baseline (5.67 ± 0.55 mm) appeared to be not significant (p-value = 0.63). At the 12-month evaluation, the marginal bone level (4.95 ± 0.45 mm) underwent significant decrease respect to baseline value as proven by significant change at marginal bone level (-0.62 ± 0.51 mm with a p-value = 0.01). Conclusion The results of the present study suggested a positive 12-month outcome for extension implants in the rehabilitation of the moderate atrophic maxilla, without the need of extensive reconstructive surgeries and grafting procedures.
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Affiliation(s)
- Giovanni Battista Menchini-Fabris
- Department of Multidisciplinary Regenerative Research, "Guglielmo Marconi University", Rome, Italy.,Tuscan Dental Institute, Fortis Dental Center, Forte dei Marmi, Italy
| | - Simone Marconcini
- Tuscan Dental Institute, Fortis Dental Center, Forte dei Marmi, Italy.,Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, Pisa, Italy
| | - Enrica Giammarinaro
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, Pisa, Italy
| | - Antonio Barone
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, Pisa, Italy
| | - Paolo Toti
- Department of Multidisciplinary Regenerative Research, "Guglielmo Marconi University", Rome, Italy.,Tuscan Dental Institute, Fortis Dental Center, Forte dei Marmi, Italy
| | - Ugo Covani
- Department of Multidisciplinary Regenerative Research, "Guglielmo Marconi University", Rome, Italy.,Tuscan Dental Institute, Fortis Dental Center, Forte dei Marmi, Italy
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58
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Zamparini F, Pirani C, Chavarria-Bolanos D, Gandolfi MG, Prati C. Rehabilitation of anterior maxilla with a novel hyperbolic profile transmucosal implant in elderly patients. ACTA ACUST UNITED AC 2019; 68:249-258. [DOI: 10.23736/s0026-4970.19.04259-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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59
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Bertl K, Ebner M, Knibbe M, Pandis N, Kuchler U, Ulm C, Stavropoulos A. How old is old for implant therapy in terms of early implant losses? J Clin Periodontol 2019; 46:1282-1293. [PMID: 31529723 PMCID: PMC6899847 DOI: 10.1111/jcpe.13199] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 07/21/2019] [Accepted: 09/09/2019] [Indexed: 12/16/2022]
Abstract
OBJECTIVES To assess, retrospectively, whether older age has an impact on implant osseointegration when compared with younger age. METHODS All patients ≥65 years old at implant installation, in an university setting over a time-period of 11.5 years, with complete anamnestic data and follow-up until prosthetic restoration were included, and any early implant loss (EIL; i.e. lack of osseointegration prior to or at the time-point of prosthetic restoration) was recorded. Further, one implant, from each of the elderly patients, was attempted matched to one implant in a younger patient (35 to <55 years old at implant installation) from the same clinic based on (a) gender, (b) implant region, (c) smoking status and (d) bone grafting prior to/simultaneously with implant installation. The potential impact of various local and systemic factors on EIL in the entire elderly population, and in the matched elderly and younger patient group was statistically assessed. RESULTS Four hundred forty-four patients ≥65 years old (range 65.1-91.3; 56.8% female) receiving 1,517 implants were identified; 10 patients had one EIL each (implant/patient level: 0.66/2.25%). Splitting this patient cohort additionally into four age groups [65-69.9 (n = 213), 70-74.9 (n = 111), 75-79.9 (n = 80) and ≥80 (n = 40)], EIL was on the implant level 0.41, 0.83, 0.34 and 2.26%, respectively, (p = .102) and on the patient level 1.41, 2.70, 1.25 and 7.50%, respectively, (p = .104); multilevel analysis showed weak evidence of association of increasing age with higher EIL rate (p = .090). Matching was possible in 347 cases, and 5 (1.44%) and 9 (2.59%) EIL in the elderly and younger patients, respectively, were observed (p = .280). EIL could not be associated with any systemic condition or medication intake. CONCLUSIONS Elderly patients ≥65 years old presented a similarly low EIL rate as younger patients 35 to <55 years old, while patients ≥80 years old may have a slight tendency for a higher EIL rate. Hence, ageing does not seem to compromise osseointegration, and if at all, then only slightly and at a later stage of life.
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Affiliation(s)
- Kristina Bertl
- Department of Periodontology, Faculty of Odontology, University of Malmö, Malmö, Sweden.,Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Maria Ebner
- Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Comprehensive Center Unit, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Marianne Knibbe
- Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Nikolaos Pandis
- Department of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Ulrike Kuchler
- Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Christian Ulm
- Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Andreas Stavropoulos
- Department of Periodontology, Faculty of Odontology, University of Malmö, Malmö, Sweden.,Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
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Papi P, Di Murro B, Pranno N, Bisogni V, Saracino V, Letizia C, Polimeni A, Pompa G. Prevalence of peri‐implant diseases among an Italian population of patients with metabolic syndrome: A cross‐sectional study. J Periodontol 2019; 90:1374-1382. [DOI: 10.1002/jper.19-0077] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/09/2019] [Accepted: 06/17/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Piero Papi
- Department of Oral and Maxillo‐Facial Sciences“Sapienza” University of Rome Rome Italy
| | - Bianca Di Murro
- Department of Oral and Maxillo‐Facial Sciences“Sapienza” University of Rome Rome Italy
| | - Nicola Pranno
- Department of Oral and Maxillo‐Facial Sciences“Sapienza” University of Rome Rome Italy
| | - Valeria Bisogni
- Department of Translational and Precision Medicine“Sapienza” University of Rome Rome Italy
| | - Vincenza Saracino
- Department of Translational and Precision Medicine“Sapienza” University of Rome Rome Italy
| | - Claudio Letizia
- Department of Translational and Precision Medicine“Sapienza” University of Rome Rome Italy
| | - Antonella Polimeni
- Department of Oral and Maxillo‐Facial Sciences“Sapienza” University of Rome Rome Italy
| | - Giorgio Pompa
- Department of Oral and Maxillo‐Facial Sciences“Sapienza” University of Rome Rome Italy
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61
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Di Murro B, Papi P, Letizia C, Pompa G. The prevalence of peri-implant diseases in patients with metabolic syndrome: a case-control study on an Italian population sample. MINERVA STOMATOLOGICA 2019; 68:143-149. [PMID: 31357847 DOI: 10.23736/s0026-4970.19.04243-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND The correlation of peri-implantitis with systemic diseases is still highly debated and controversial in literature. The objective of this work was to evaluate the possible association between peri-implant diseases and metabolic syndrome. METHODS In this case-control study, subjects healthy or affected by metabolic syndrome, with at least one dental implant with >5 years of functional loading were screened to detect peri-implant health or diseases. A complete full mouth periodontal and peri-implant examination at six sites was performed for each implant and standardized periapical X-ray were taken to evaluate marginal bone loss. Diagnostic Criteria of the 2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions were applied. The analysis of variance (ANOVA) was used to compare means of recorded variables between the two groups, with a P<0.05 value considered statistically significant. Sub-group analysis was performed for smoking (smokers vs. non-smokers), sex (males vs. females), implant site (maxillary vs. mandible) and type of prostheses (single crown vs. bridge). RESULTS Forty-one patients were enrolled, divided into two groups, for a total of 132 dental implants: 71 in the metabolic syndrome group and 61 in the control group. The overall prevalence of peri-implant diseases (peri-implantitis + mucositis) in the two groups was, respectively, 93% vs. 63%, with an odds ratio (OR) of 7.4462 (95% CI: 2.6092; 21.2496) for the metabolic syndrome group (P<0.001). CONCLUSIONS Despite the limited sample, our results showed a statistically significant higher prevalence of peri-implant diseases in patients with metabolic syndrome compared to healthy patients. Further longitudinal studies are needed to verify this relationship.
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Affiliation(s)
- Bianca Di Murro
- Unit of Oral Surgery, Department of Oral and Maxillo-Facial Sciences, Sapienza University, Rome, Italy
| | - Piero Papi
- Unit of Oral Surgery, Department of Oral and Maxillo-Facial Sciences, Sapienza University, Rome, Italy -
| | - Claudio Letizia
- Unit of Secondary Hypertension, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - Giorgio Pompa
- Unit of Oral Surgery, Department of Oral and Maxillo-Facial Sciences, Sapienza University, Rome, Italy
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Jemt T. Implant failures and age at the time of surgery: A retrospective study on implant treatment in 2915 partially edentulous jaws. Clin Implant Dent Relat Res 2019; 21:686-692. [DOI: 10.1111/cid.12812] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/06/2019] [Accepted: 06/02/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Torsten Jemt
- Department of Prosthetic Dentistry/Dental Materials Science; Institute of Odontology, Sahlgrenska Academy at Göteborg University; Göteborg Sweden
- Prosthodontist, Brånemark Clinic, Public Dental Health Service; Västra Götaland Sweden
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63
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Hendrijantini N, Hartono P, Ari MDA, Rantan FA. Human Umbilical Cord Mesenchymal Stem-Cell Therapy to Increase the Density of Osteoporotic Mandibular Bone. Eur J Dent 2019; 13:58-63. [PMID: 31170758 PMCID: PMC6635969 DOI: 10.1055/s-0039-1688527] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Objective
The aim of this study is to evaluate the feasibility of human umbilical cord mesenchymal stem-cell (hUCMSC) therapy in increasing osteoporotic mandibular bone density in a rat model by determining changes in alkaline phosphatase (ALP), osteocalcin, type 1 collagen, and trabecular bone area after treatment.
Materials and Methods
This research adopted an experimental posttest-only control group design. Thirty female Wistar rats were randomly divided into six groups, namely, a control group with rats postsham surgery (T1), osteoporotic model postovariectomy rats (T2), postovariectomy rats 4 weeks after gelatin injection (T3), postovariectomy rats 8 weeks after gelatin injection (T4), postovariectomy rats 4 weeks after hUCMSC injection (T5), and postovariectomy rats 8 weeks after hUCMSC injection (T6). The rats were all sacrificed for histological and immunohistochemical examinations of ALP, osteocalcin, type 1 collagen, and trabecular bone area.
Results
Increased expression of ALP, type 1 collagen, and osteocalcin, as well as increased trabecular bone area, was observed in the treatment groups compared with that in the osteoporotic groups.
Conclusion
hUCMSCs produce significant osteogenic effects and increase osteoporotic mandibular bone density in the animal model. Increases in bone density are demonstrated by the higher levels of ALP, osteocalcin, and type 1 collagen, as well as increases in the trabecular bone area.
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Affiliation(s)
- Nike Hendrijantini
- Department of Prosthodontic, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Poedjo Hartono
- Department of Obstetrics and Gynecology, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
| | | | - Fedik Abdul Rantan
- Department of Microbiology and Virology, Faculty of Veterinary Medicine, Universitas Airlangga, Surabaya, Indonesia
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Jemt T. Implant failures and age at the time of surgery: A retrospective study on implant treatments in 4585 edentulous jaws. Clin Implant Dent Relat Res 2019; 21:514-520. [DOI: 10.1111/cid.12753] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 02/27/2019] [Accepted: 02/28/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Torsten Jemt
- Department of Prosthetic Dentistry/Dental Materials ScienceInstitute of Odontology, Sahlgrenska Academy at Göteborg University Göteborg Sweden
- Brånemark Clinic, Public Dental Health Service Region of Västra Götaland Sweden
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65
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Donovan TE, Marzola R, Murphy KR, Cagna DR, Eichmiller F, McKee JR, Metz JE, Albouy JP, 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 2018; 120:816-878. [DOI: 10.1016/j.prosdent.2018.09.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 09/24/2018] [Indexed: 02/08/2023]
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66
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Schimmel M, Srinivasan M, McKenna G, Müller F. Effect of advanced age and/or systemic medical conditions on dental implant survival: A systematic review and meta‐analysis. Clin Oral Implants Res 2018; 29 Suppl 16:311-330. [DOI: 10.1111/clr.13288] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2018] [Indexed: 01/26/2023]
Affiliation(s)
- Martin Schimmel
- Division of GerodontologySchool of Dental MedicineUniversity of Bern Bern Switzerland
- Division of Gerodontology and Removable ProsthodonticsUniversity Clinics of Dental MedicineUniversity of Geneva Geneva Switzerland
| | - Murali Srinivasan
- Division of Gerodontology and Removable ProsthodonticsUniversity Clinics of Dental MedicineUniversity of Geneva Geneva Switzerland
| | - Gerald McKenna
- Centre for Public HealthQueen's University Belfast Institute of Clinical Sciences Belfast UK
| | - Frauke Müller
- Division of Gerodontology and Removable ProsthodonticsUniversity Clinics of Dental MedicineUniversity of Geneva Geneva Switzerland
- Department of Internal Medicine, Rehabilitation and GeriatricsUniversity Hospitals of Geneva Thônex Switzerland
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Abstract
This volume of Periodontology 2000 represents the 25th anniversary of the Journal, and uses the occasion to assess important advancements in periodontology over the past quarter-century as well as the hurdles that remain. Periodontitis is defined by pathologic loss of the periodontal ligament and alveolar bone. The disease involves complex dynamic interactions among active herpesviruses, specific bacterial pathogens and destructive immune responses. Periodontal diagnostics is currently based on clinical rather than etiologic criteria, and provides limited therapeutic guidance. Periodontal causative treatment consists of scaling, antiseptic rinses and occasionally systemic antibiotics, and surgical intervention has been de-emphasized, except perhaps for the most advanced types of periodontitis. Plastic surgical therapy includes soft-tissue grafting to cover exposed root surfaces and bone grafting to provide support for implants. Dental implants are used to replace severely diseased or missing teeth, but implant overuse is of concern. The utility of laser treatment for periodontitis remains unresolved. Host modulation and risk-factor modification therapies may benefit select patient groups. Patient self-care is a critical part of periodontal health care, and twice-weekly oral rinsing with 0.10-0.25% sodium hypochlorite constitutes a valuable adjunct to conventional anti-plaque and anti-gingivitis treatments. A link between periodontal herpesviruses and systemic diseases is a strong biological plausibility. In summary, research during the past 25 years has significantly changed our concepts of periodontitis pathobiology and has produced more-effective and less-costly therapeutic options.
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68
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Kubota T, Hasuike A, Tsukune N, Ozawa Y, Yamamoto T, Min S, Naito M, Sato S. Influence of estrogen deficiency on guided bone augmentation: investigation of rat calvarial model and osteoblast-like MC3T3-E1 cells. Eur J Oral Sci 2018; 126:206-213. [PMID: 29676477 DOI: 10.1111/eos.12415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The effect of estrogen deficiency in bone augmentation, and the mechanisms by which estrogen deficiency impedes osteoblast differentiation and collagen matrix production, were examined. Twenty female Jcl:Wistar rats were divided into two groups: ovariectomized rats; and control rats. Guided bone augmentation was performed by positioning plastic caps in the calvarium of all animals at 8 wk after ovariectomy or sham surgery. Micro-computed tomography and histological sections were used to determine the amount of bone augmentation within the plastic caps. At 8 wk, there was statistically significantly less newly formed bone volume in ovariectomized rats. Immunohistological staining revealed the rare alignment of runt-related transcription factor 2-positive osteoblast-like cells and collagen I-positive bundle fibers in ovariectomized rats. In cell culture experiments, pre-osteoblast-like cells, MC3T3-E1, were treated with the estrogen receptor antagonist, fulvestrant. In treated cells, alkaline phosphatase activity remained high, whereas Alizarin Red staining was completely inhibited. Extracellular staining intensity of collagen I was decreased after fulvestrant treatment. Consistent with these observations, gene-expression analysis confirmed that fulvestrant treatment led to weaker expression of mRNA for osteogenic transcription factors and bone matrix protein-related genes. The results demonstrate that estrogen deficiency suppresses osteoblast differentiation and collagen matrix production in bone augmentation.
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Affiliation(s)
- Tatsuya Kubota
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Akira Hasuike
- Department of Periodontology, Nihon University School of Dentistry, Tokyo, Japan.,Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Naoya Tsukune
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Yasumasa Ozawa
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Takanobu Yamamoto
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Seiko Min
- Department of Periodontology and Dental Hygiene, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Masako Naito
- Department of Anatomy, Nihon University School of Dentistry, Tokyo, Japan
| | - Shuichi Sato
- Department of Periodontology, Nihon University School of Dentistry, Tokyo, Japan.,Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
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69
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Chen CH, Pei X, Tulu U, Aghvami M, Chen CT, Gaudillière D, Arioka M, Maghazeh Moghim M, Bahat O, Kolinski M, Crosby T, Felderhoff A, Brunski J, Helms J. A Comparative Assessment of Implant Site Viability in Humans and Rats. J Dent Res 2018; 97:451-459. [PMID: 29202640 PMCID: PMC5863872 DOI: 10.1177/0022034517742631] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Our long-term objective is to devise methods to improve osteotomy site preparation and, in doing so, facilitate implant osseointegration. As a first step in this process, we developed a standardized oral osteotomy model in ovariectomized rats. There were 2 unique features to this model: first, the rats exhibited an osteopenic phenotype, reminiscent of the bone health that has been reported for the average dental implant patient population. Second, osteotomies were produced in healed tooth extraction sites and therefore represented the placement of most implants in patients. Commercially available drills were then used to produce osteotomies in a patient cohort and in the rat model. Molecular, cellular, and histologic analyses demonstrated a close alignment between the responses of human and rodent alveolar bone to osteotomy site preparation. Most notably in both patients and rats, all drilling tools created a zone of dead and dying osteocytes around the osteotomy. In rat tissues, which could be collected at multiple time points after osteotomy, the fate of the dead alveolar bone was followed. Over the course of a week, osteoclast activity was responsible for resorbing the necrotic bone, which in turn stimulated the deposition of a new bone matrix by osteoblasts. Collectively, these analyses support the use of an ovariectomy surgery rat model to gain insights into the response of human bone to osteotomy site preparation. The data also suggest that reducing the zone of osteocyte death will improve osteotomy site viability, leading to faster new bone formation around implants.
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Affiliation(s)
- C.-H. Chen
- Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University School of Medicine, Taoyuan, Taiwan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - X. Pei
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - U.S. Tulu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - M. Aghvami
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - C.-T. Chen
- Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University School of Medicine, Taoyuan, Taiwan
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital at Keelung, Keelung, Taiwan
| | - D. Gaudillière
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - M. Arioka
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- Department of Clinical Pharmacology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - M. Maghazeh Moghim
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
- University College London Medical School, University College London, London, UK
| | - O. Bahat
- Private practice, Beverly Hills, CA, USA
| | | | | | | | - J.B. Brunski
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - J.A. Helms
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA
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70
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Sato Y, Kitagawa N, Isobe A. Implant treatment in ultra-aged society. JAPANESE DENTAL SCIENCE REVIEW 2018; 54:45-51. [PMID: 29755614 PMCID: PMC5944061 DOI: 10.1016/j.jdsr.2017.12.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 10/23/2017] [Accepted: 12/09/2017] [Indexed: 11/17/2022] Open
Abstract
Implant therapy is gaining presence as a prosthodontic treatment option. However, the graying of the population has led to an increase in the number of older adults requiring special consideration in implant treatment because of their systemic health problems. Additionally, with the growth of the elderly population in need of long-term care, a greater number of older adults who have received implant treatment are receiving long-term care, raising various issues that need to be addressed. In the present review article, we describe the significance of implant treatment in older adults, issues when performing implant treatment in geriatric patients, and measures to be taken when implant patients have lapsed into a state of requiring long-term care. In addition, in view of population aging, we propose an approach for applying implant treatment to older adults. This approach includes using an appropriate type of implant system depending on the remaining life expectancy and the patient's general condition, performing less invasive surgery, providing treatment using prosthetic appliances that are easy to manage and can be modified, and ensuring oral health management by providing an Implant Card to patients when the treatment is completed.
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Affiliation(s)
- Yuji Sato
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan
| | - Noboru Kitagawa
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan
| | - Akio Isobe
- Department of Geriatric Dentistry, Showa University School of Dentistry, 2-1-1, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan
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71
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Gluckman H, Salama M, Du Toit J. A retrospective evaluation of 128 socket-shield cases in the esthetic zone and posterior sites: Partial extraction therapy with up to 4 years follow-up. Clin Implant Dent Relat Res 2017; 20:122-129. [PMID: 29178381 DOI: 10.1111/cid.12554] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/27/2017] [Accepted: 10/11/2017] [Indexed: 12/27/2022]
Abstract
OBJECTIVES Tooth loss results in an inevitable alveolar ridge reduction. This has established a cautionary approach to extract, wait, augment, and insert the implant, in lieu of immediate placement. However, saving the tooth or part of it whenever possible is more conservative and supports the vital periodontal tissue buccofacial to an implant. The purpose of this cases series was to report on implant survival using this technique in a large cohort of patients at mid-term follow-up. MATERIALS AND METHODS A private practice patient database was searched for all patients having received socket-shield treatment in conjunction with immediate implant placement. Of the results returned, 128 met the inclusion criteria of ≥12 months from date of restoration, or failing prior to definitive restoration. These patients were recalled for evaluation of the restored implants up to 4 years post-treatment. RESULTS Seventy immediate implants with socket-shields were placed in female patients and 58 in males, age range 24-71 (mean 39 years). The distribution of sites treated were: maxillary incisors (64%), premolars (22%), canines (14%); maxilla (89.9%), mandible (10.1%). 123/128 implants osseointegrated and survived 1-4 years following restoration (survival rate 96.1%). A combined complication rate of 25/128 implants occurred (19.5%). Five implants failed to osseointegrate and were removed. The remaining 20 complications were all managed or observed without management, with implants surviving at mid-term follow-up. CONCLUSIONS Notwithstanding technique sensitivity and the need for randomized control studies, this case series demonstrates that the socket-shield performs competitively when compared to implant survival rates in both conventional immediate and delayed implant placement.
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Affiliation(s)
| | - Maurice Salama
- Medical College of Georgia, University of Pennsylvania, Philadelphia, Augusta, Georgia
| | - Jonathan Du Toit
- Department of Periodontics and Oral Medicine, School of Dentistry, Faculty of Health Sciences, University of Pretoria, South Africa
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72
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Buser D, Sennerby L, De Bruyn H. Modern implant dentistry based on osseointegration: 50 years of progress, current trends and open questions. Periodontol 2000 2016; 73:7-21. [DOI: 10.1111/prd.12185] [Citation(s) in RCA: 253] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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