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Back LS, Silva J, Morsch CS, Tumedei M, Magini RDS, Piatelli A, Benfatti CAM. Clinical Performance of 170 Frictional Morse Taper Implants: 2 Years Follow-Up. J ORAL IMPLANTOL 2024; 50:127-135. [PMID: 38530824 DOI: 10.1563/aaid-joi-d-23-00054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
This study evaluated the clinical survival rates of 170 Morse taper implants through clinical and mechanical parameters in different therapeutic approaches such as single crowns, fixed partial prostheses, and fixed full-arch prostheses. Patients referred to the Center on Education and Research on Dental Implants from May 2017 to July 2018 with the indication for dental implant therapy, aged >18 years, without periodontal disease, recent evidence of inflammatory activity or other oral disorders, current pregnancy, uncontrolled diabetes mellitus or heavy smoking habit were included in this study. After 12 weeks of healing since the implants were placed in the mandible and after 16 weeks following implants placed in the maxilla, patients returned to the Center for prosthetic rehabilitation. After implant therapy, all patients underwent periodical, clinical, and prosthetic examinations every 6 months. Prosthetic restorations involved 109 fixed reconstructions in function. Few prosthetic complications were reported (6.55%). Twenty implants were rehabilitated with cemented prostheses; from those, 1 crown suffered a loss in retention/decementation. Of the 148 implants rehabilitated with screwed-retained prostheses, 6.76% suffered prosthetic screw loosening. The cumulative implant survival rate was 98.2%. When peri-implant tissue health was evaluated, the keratinized mucosa band appeared related to peri-implant tissue stability. Thus, Morse taper implants represented a successful procedure for implant rehabilitation, with a high cumulative implant survival rate, low prevalence of biological and prosthetic complications, and good stability of peri-implant tissues over the assessed period.
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Affiliation(s)
- Lara Steiner Back
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| | - Joseane Silva
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| | - Carolina Schäffer Morsch
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| | - Margherita Tumedei
- Department of Biomedical, Surgical and Dental Sciences, State University of Milano, Milano, Italy and IRCCS, Fondazione Ca' Granda, IRCCS Ospedale Maggiore Policlinico, Milano, Italy
| | - Ricardo de Souza Magini
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| | - Adriano Piatelli
- School of Dentistry, Saint Camillus International University for Health Sciences (Unicamillus), Rome, Italy and Facultad de Medicina, Universidad Catolica San Antonio de Murcia, Murcia Spain
| | - Cesar Augusto Magalhães Benfatti
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
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Addy LD. An introduction to dental implants. Br Dent J 2024; 236:753-757. [PMID: 38789751 DOI: 10.1038/s41415-024-7430-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 04/26/2024] [Accepted: 04/26/2024] [Indexed: 05/26/2024]
Abstract
The use of implants to replace missing teeth is now commonplace and practised by clinicians worldwide in both general and specialist practice. There is an abundance of evidence on the general success of implant treatment. As well as reviewing the history of dental implants, this narrative review will discuss the merits and successful placement of tissue-level verses bone-level implants. Furthermore, the article will evaluate the concept and benefits of platform switching for implant treatment. Finally, with the increased placement of implants, this narrative paper will review how different titanium surfaces impact on the risk of peri-implantitis.
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Affiliation(s)
- Liam D Addy
- Consultant and Honorary Senior Lecturer in Restorative Dentistry, Cardiff Dental Hospital, Heath Park, Cardiff, CF14 4XY, UK.
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Perussolo J, Donos N. Maintenance of peri-implant health in general dental practice. Br Dent J 2024; 236:781-789. [PMID: 38789755 PMCID: PMC11126374 DOI: 10.1038/s41415-024-7406-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/26/2024]
Abstract
The long-term maintenance or restoration of peri-implant tissues' health depends on the strategic implementation of preventive measures and interventions. These measures should be initiated before implant placement and continued throughout a patient's lifetime, as part of a tailored and comprehensive supportive peri-implant care (SPIC) programme. Central to the clinical efforts of maintaining and rehabilitating peri-implant tissues are several key factors, including the ongoing assessment and frequent monitoring of tissue health and stability, proactive oral health promotion, the control of risk factors and indicators and the provision of professional plaque biofilm removal. It is of paramount importance to underline that SPIC should not limit its scope exclusively to patients already in a state of peri-implant health; in fact, it is imperative that it should extend its protective effect to individuals who have been previously diagnosed and treated for peri-implant diseases, focusing on preventing its recurrence and progression, thereby avoiding further complications, such as implant loss.This narrative review presents an overview of the current literature on the maintenance of peri-implant tissues' health and the steps of SPIC providing insights into the critical factors to be considered when managing dental implant patients in the general dental practice.
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Affiliation(s)
- Jeniffer Perussolo
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London, Turner Street, London, E1 2AD, UK
| | - Nikolaos Donos
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London, Turner Street, London, E1 2AD, UK.
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Wong I, Zhang Z, Dang X, Yu X, Lin X, Li Y, Deng F, Xu R. Single missing molar with wide mesiodistal length restored using a single or double implant-supported crown: A self-controlled case report and 3D finite element analysis. J Prosthodont Res 2024:JPR_D_23_00278. [PMID: 38644231 DOI: 10.2186/jpr.jpr_d_23_00278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
PURPOSE Based on a self-controlled case, this study evaluated the finite element analysis (FEA) results of a single missing molar with wide mesiodistal length (MDL) restored by a single or double implant-supported crown. METHODS A case of a missing bilateral mandibular first molar with wide MDL was restored using a single or double implant-supported crown. The implant survival and peri-implant bone were compared. FEA was conducted in coordination with the case using eight models with different MDLs (12, 13, 14, and 15 mm). Von Mises stress was calculated in the FEA to evaluate the biomechanical responses of the implants under increasing vertical and lateral loading, including the stress values of the implant, abutment, screw, crown, and cortical bone. RESULTS The restorations on the left and right sides supported by double implants have been used for 6 and 12 years, respectively, and so far have shown excellent osseointegration radiographically.The von Mises stress calculated in the FEA showed that when the MDL was >14 mm, both the bone and prosthetic components bore more stress in the single implant-supported strategy. The strength was 188.62-201.37 MPa and 201.85-215.9 MPa when the MDL was 14 mm and 15 mm, respectively, which significantly exceeded the allowable yield stress (180 MPa). CONCLUSIONS Compared with the single implant-supported crown, the double implant-supported crown reduced peri-implant bone stress and produced a more appropriate stress transfer model at the implant-bone interface when the MDL of the single missing molar was ≥14 mm.
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Affiliation(s)
- Iohong Wong
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Zhengchuan Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Xiaobing Dang
- Guangdong Janus Biotechnology Co., Ltd., Guangzhou, China
- Guangdong CAS Angels Biotechnology Co., Ltd., Foshan, China
| | - Xiaoran Yu
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Xiaoxuan Lin
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Yiming Li
- Department of Stomatology, the Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Feilong Deng
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
| | - Ruogu Xu
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
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Thomas S, Barrak F. Awareness of peri-implantitis among general dental practitioners in the UK: a questionnaire study. Br Dent J 2024:10.1038/s41415-024-7136-y. [PMID: 38443613 DOI: 10.1038/s41415-024-7136-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/25/2023] [Accepted: 10/03/2023] [Indexed: 03/07/2024]
Abstract
Introduction Dental implants are a predictable prosthetic option for replacement of missing teeth with good survival rates. Peri-implant diseases are the main reason for implant failure by causing bone loss around the implant leading to implant loss. General dental practitioners see patients with dental implants routinely and therefore, awareness of risk factors for peri-implant disease and early diagnosis is essential for appropriate management. The aim of this study is to assess the awareness of general dental practitioners in diagnosing peri-implantitis, with a view to identify any potential training needs.Design, setting, materials and methods A quantitative study method was designed using an online questionnaire sent to closed social media groups in the UK. The significance level was taken as p <0.05. The chi-squared tests and Kruskal-Wallis tests were used with IBM SPSS software. Descriptive statistical analysis of data was also done.Results and conclusion A total of 224 responses were received. The results show that there is lack of awareness of diagnostic criteria of peri-implantitis among general dental practitioners. However, majority of practitioners are aware of the legal implications of failing to diagnose this condition. There is a perceived need for more undergraduate training in diagnosing peri-implant diseases.
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Affiliation(s)
- Sonu Thomas
- School of Dentistry, University of Central Lancashire, Preston, PR1 2HE, UK.
| | - Fadi Barrak
- School of Dentistry, University of Central Lancashire, Preston, PR1 2HE, UK
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Molinero-Mourelle P, Abou-Ayash S, Brägger U, Schimmel M, Özcan M, Yilmaz B, Buser R, Al-Haj Husain N. Load bearing capacity of 3-unit screw-retained implant-supported fixed dental prostheses with a mesial and distal cantilever on a single implant: A comparative in vitro study. J Mech Behav Biomed Mater 2024; 151:106395. [PMID: 38244420 DOI: 10.1016/j.jmbbm.2024.106395] [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: 10/04/2023] [Revised: 01/08/2024] [Accepted: 01/08/2024] [Indexed: 01/22/2024]
Abstract
OBJECTIVES To assess the mechanical durability of monolithic zirconia implant-supported fixed dental prostheses (iFDP) design on one implant, with a distal and a mesial extension cantilever bonded to a titanium base compared to established designs on two implants. MATERIALS AND METHODS Roxolid Tissue level (TL), and tissue level x (TLX) implants were used to manufacture screw-retained 3-unit iFDPs (n = 60, n = 10 per group), with following configurations (X: Cantilever; I: Implant, T: Test group, C: Control group): T1: X-I-X (TL); T2: X-I-X (TLX); T3: I-I-X (TL); T4: I-I-X (TLX); C1: I-X-I (TL); C2: I-X-I (TLX). The iFDPs were thermomechanically aged and subsequently loaded until fracture using a universal testing machine. The failure load at first crack (Finitial) and at catastrophic fracture (Fmax) were measured and statistical evaluation was performed using two-way ANOVA and Tukey's post-hoc tests. RESULTS The mean values ranged between 190 ± 73 and 510 ± 459 N for Finitial groups, and between 468 ± 76 and 1579 ± 249 N for Fmax, respectively. Regarding Finitial, neither the implant type, nor the iFDP configuration significantly influenced measured failure loads (all p > 0.05). The choice of implant type did not show any significant effect (p > 0.05), while reconstruction design significantly affected Fmax data (I-I-Xa < X-I-Xb < I-X-Ic) (p < 0.05). The mesial and distal extension groups (X-I-X) showed fractures only at the cantilever extension site, while the distal extension group (I-I-X) showed one abutment and one connector fracture at the implant/reconstruction interface. CONCLUSION Results suggest that iFDPs with I-X-I design can be recommended regardless of tested implant type followed by the mesial and distal extension design on one implant abutment (X-I-X).
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Affiliation(s)
- Pedro Molinero-Mourelle
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Switzerland
| | - Samir Abou-Ayash
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Switzerland
| | - Urs Brägger
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Switzerland
| | - Martin Schimmel
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Switzerland; Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Switzerland
| | - Mutlu Özcan
- Clinic of Masticatory Disorders and Dental Biomaterials, Center of Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Burak Yilmaz
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Switzerland; Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland; Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, OH, USA
| | - Ramona Buser
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Switzerland
| | - Nadin Al-Haj Husain
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Switzerland; Clinic of Masticatory Disorders and Dental Biomaterials, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
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7
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Verma M, Faraz F, Bhardwaj S, Sood A. Evaluation of safety and efficacy of locally developed dental implants: A noninferiority randomized controlled trial. J Prosthet Dent 2024; 131:443-449. [PMID: 35279301 DOI: 10.1016/j.prosdent.2021.12.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 12/26/2021] [Accepted: 12/28/2021] [Indexed: 10/18/2022]
Abstract
STATEMENT OF PROBLEM Various dental implants are available in India, but imported devices are expensive; an affordable locally produced dental implant system would be beneficial. PURPOSE The purpose of this noninferiority randomized controlled trial was to compare the safety and efficacy of a locally developed dental implant system to those of an established imported dental implant system with similar microsurface characteristics. MATERIAL AND METHODS A total of 136 participants with 201 partially edentulous sites, aged 18 to 65 years, were enrolled in the trial, with 134 sites receiving test implants and 67 sites control implants (n ratio, 2:1). The implants received a delayed submerged healing protocol and were loaded 3 to 6 months after surgery. Maximum insertion torque (IT) was recorded during the implant surgery, and the implant stability quotient (ISQ) was evaluated on the day of surgery and at the second-stage procedure. The mean crestal bone loss (MCBL) was measured on periapical radiographs at prosthetic placement (baseline) and at 6 months and 12 months after loading. The primary measure of outcome was the implant survival rate, and the secondary measure of evaluation was the intergroup difference in MCBL at baseline, 6 months, and 12 months. RESULTS A total of 127 test and 61 control implant sites were available for follow-up 1 year after prosthesis placement. At the end of 12 months, the test and control implant groups demonstrated a survival rate of 97% and 100%, respectively. The MCBL difference was significant between the 2 groups at baseline (P<.05). However, at 6 and 12 months, the difference between the test and control groups was not significantly different (P>.05). CONCLUSIONS The survival rate of the test group fell within the previously assumed 10% noninferiority margin. Therefore, the null hypothesis was accepted for the trial, and the locally developed implants were noninferior to the imported implants at a sample allocation ratio of 2:1.
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Affiliation(s)
- Mahesh Verma
- Professor Emeritus, Department of Prosthodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India; Vice Chancellor, G.G.S.I.P.U., Delhi, India
| | - Farrukh Faraz
- Professor, Department of Periodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Smiti Bhardwaj
- Project Scientist II- Periodontics, Dental Implant Development Project, Maulana Azad Institute of Dental Sciences, New Delhi, India.
| | - Abhinav Sood
- Consultant, Prosthodontics, The Atelier Dental Practice, New Delhi, India
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Nam DH, Kim PJ, Koo KT, Seol YJ, Lee YM, Ku Y, Rhyu IC, Kim S, Cho YD. The cumulative survival rate of dental implants with micro-threads: a long-term retrospective study. J Periodontal Implant Sci 2024; 54:53-62. [PMID: 37336523 PMCID: PMC10901680 DOI: 10.5051/jpis.2203240162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 11/03/2022] [Accepted: 11/29/2022] [Indexed: 06/21/2023] Open
Abstract
PURPOSE This study aimed to evaluate the long-term cumulative survival rate (CSR) of dental implants with micro-threads in the neck over a 10-year follow-up period and to examine the factors influencing the survival rate of dental implants. METHODS This retrospective study was based on radiographic and dental records. In total, 151 patients received 490 Oneplant® dental implants with an implant neck micro-thread design during 2006-2010 in the Department of Periodontology of Seoul National University Dental Hospital. Implant survival was evaluated using Kaplan-Meier analysis. Cox proportional hazard regression analysis was used to identify the factors influencing implant failure. RESULTS Ten out of 490 implants (2.04%) failed due to fixture fracture. The CSR of the implants was 97.9%, and no significant difference was observed in the CSR between external- and internal-implant types (98.2% and 97.6%, respectively, P=0.670). In Cox regression analysis, 2-stage surgery significantly increased the risk of implant failure (hazard ratio: 4.769, P=0.039). There were no significant differences in influencing factors, including sex, age, implant diameter, length, fixture type, location, surgical procedure, bone grafting, and restoration type. CONCLUSIONS Within the limitations of this retrospective study, the micro-thread design of the implant neck was found to be favorable for implant survival, with stable clinical outcomes.
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Affiliation(s)
- Dong-Hui Nam
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea
| | - Pil-Jong Kim
- Biomedical Knowledge Engineering Laboratory, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
| | - Ki-Tae Koo
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea
| | - Yang-Jo Seol
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea
| | - Yong-Moo Lee
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea
| | - Young Ku
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea
| | - In-Chul Rhyu
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea
| | - Sungtae Kim
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea.
| | - Young-Dan Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea.
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Han Y, Xing X, Zhou L, Huang S, Lin Z, Hong G, Chen J. GL13K-modified titanium regulates osteogenic differentiation via the NF-κB pathway. Int Immunopharmacol 2024; 126:111279. [PMID: 38056197 DOI: 10.1016/j.intimp.2023.111279] [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: 07/18/2023] [Revised: 11/20/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023]
Abstract
The osteoimmune response plays a crucial regulatory role in the osseointegration of dental implants. Previous studies found the antimicrobial peptide coating (GL13K) could activate the immunomodulatory potential of macrophages (Raw 264.7) and promote osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). To further investigate the mechanism of interaction between immunomodulation and differentiation, a co-culture model of the representative cells (Raw 264.7 and BMSCs) was constructed to mimic the immune microenvironment. In this system, GL13K coating of titanium implant effectively inhibited the polarization of the inflammatory M1 type and promoted the polarization of the anti-inflammatory M2 type. Furthermore, the inhibited NF-κB signaling pathway and Mip-2 gene expression were found and validated by bioinformatics analysis and virus-induced gene silencing, which significantly affected the tissue repair process. It can be concluded that the GL13K coating had the potential to establish a localized immune microenvironment conducive to osteogenic differentiation through cellular interactions. Subsequent investigations would be dedicated to a thorough examination of the osseointegration effects of GL13K coating.
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Affiliation(s)
- Yu Han
- Fujian Provincial Engineering Research Center of Oral Biomaterial, Fujian Medical University, Fuzhou 350001, People's Republic of China
| | - Xiaojie Xing
- Stomatological Key Lab of Fujian College and University, Fujian Medical University, Fuzhou 350001, People's Republic of China
| | - Lin Zhou
- Department of Oral Mucosa Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou 350001, People's Republic of China
| | - Shiying Huang
- Institute of Stomatology, Fujian Medical University, Fuzhou 350001, People's Republic of China
| | - Zhaonan Lin
- Institute of Stomatology, Fujian Medical University, Fuzhou 350001, People's Republic of China
| | - Guang Hong
- Liaison Center for Innovative Dentistry, Graduate School of Dentistry, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575 Miyagi, Japan.
| | - Jiang Chen
- Fujian Provincial Engineering Research Center of Oral Biomaterial, Fujian Medical University, Fuzhou 350001, People's Republic of China.
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Alqutaibi AY, Algabri RS, Elawady D, Ibrahim WI. Advancements in artificial intelligence algorithms for dental implant identification: A systematic review with meta-analysis. J Prosthet Dent 2023:S0022-3913(23)00783-7. [PMID: 38158266 DOI: 10.1016/j.prosdent.2023.11.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 01/03/2024]
Abstract
STATEMENT OF PROBLEM The evidence regarding the application of artificial intelligence (AI) in identifying dental implant systems is currently inconclusive. The available studies present varying results and methodologies, making it difficult to draw definitive conclusions. PURPOSE The purpose of this systematic review with meta-analysis was to comprehensively analyze and evaluate articles that investigate the application of AI in identifying and classifying dental implant systems. MATERIAL AND METHODS An electronic systematic review was conducted across 3 databases: MEDLINE/PubMed, Cochrane, and Scopus. Additionally, a manual search was performed. The inclusion criteria consisted of peer-reviewed studies investigating the accuracy of AI-based diagnostic tools on dental radiographs for identifying and classifying dental implant systems and comparing the results with those obtained by expert judges using manual techniques-the search strategy encompassed articles published until September 2023. The Quality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2) tool was used to assess the quality of included articles. RESULTS Twenty-two eligible articles were included in this review. These articles described the use of AI in detecting dental implants through conventional radiographs. The pooled data showed that dental implant identification had an overall accuracy of 92.56% (range 90.49% to 94.63%). Eleven studies showed a low risk of bias, 6 demonstrated some concern risk, and 5 showed a high risk of bias. CONCLUSIONS AI models using panoramic and periapical radiographs can accurately identify and categorize dental implant systems. However, additional well-conducted research is recommended to identify the most common implant systems.
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Affiliation(s)
- Ahmed Yaseen Alqutaibi
- Associate Professor, Department of Prosthodontics and Implant Dentistry, College of Dentistry, Taibah University, Al Madinah, Saudi Arabia; and Associate Professor, Department of Prosthodontics, College of Dentistry, Ibb University, Ibb, Yemen.
| | - Radhwan S Algabri
- Assistant professor, Department of Prosthodontics, Faculty of Dentistry, Ibb University, Ibb, Yemen; and Assistant professor, Department of Prosthodontics, Faculty of Dentistry, National University, Ibb, Yemen
| | - Dina Elawady
- Associate Professor, Department of Prosthodontics, Faculty of Dentistry, MSA University, 6th of October City, Egypt
| | - Wafaa Ibrahim Ibrahim
- Associate Professor, Department of Prosthodontics, Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Mansoura, Egypt
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Padhye NM, Calciolari E, Zuercher AN, Tagliaferri S, Donos N. Survival and success of zirconia compared with titanium implants: a systematic review and meta-analysis. Clin Oral Investig 2023; 27:6279-6290. [PMID: 37740825 PMCID: PMC10630218 DOI: 10.1007/s00784-023-05242-5] [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: 11/11/2022] [Accepted: 09/05/2023] [Indexed: 09/25/2023]
Abstract
OBJECTIVE This systematic review assessed the available evidence on the survival and success rate of zirconia and titanium implants. As secondary outcomes, aesthetic, radiographic and clinical parameters, as well as biological and mechanical complications, were considered. MATERIALS AND METHODS A systematic search was performed up to March 2022 to identify CCTs/RCTs comparing zirconia and titanium implants with a minimum of 12 months of follow-up. Meta-analysis was performed when ≥ 2 articles with similar characteristics were retrieved. RESULTS Four published articles with two RCTs (2 different patient populations) with 100 zirconia and 99 titanium implants that were followed up over 12-80 months were selected out of the 6040 articles. A non-statistically significant difference between zirconia and titanium implant survival at 12 months was suggested (P = 0.0938). The success rates were 57.5-93.3% and 57.1-100% for zirconia and titanium implants, respectively. The pink aesthetic score (PES) was higher for zirconia (10.33 ± 2.06 to 11.38 ± 0.92) compared to titanium implants (8.14 ± 3.58 to 11.56 ± 1.0). CONCLUSION Based on the 2 RCTs retrieved in the literature, similar survival rates were reported for zirconia and titanium implants in the short term (12 months of follow-up). Future RCTs are warranted to evaluate the long-term outcomes of zirconia implants. CLINICAL RELEVANCE Zirconia implants may be the procedure of choice, particularly in the aesthetic zone, since they show a similar survival and success rate as titanium implants on a short-term follow-up. TRIAL REGISTRATION Systematic review registration number-CRD42021288704 (PROSPERO).
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Affiliation(s)
- Ninad Milind Padhye
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
| | - Elena Calciolari
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
- Department of Medicine and Surgery, Centre of Dentistry, University of Parma, Parma, Italy
| | - Anina Nives Zuercher
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
- Clinic of Reconstructive Dentistry, Centre of Dental Medicine, Zurich, Switzerland
| | - Sara Tagliaferri
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- Center of Excellence for Toxicological Research, CERT, University of Parma, Parma, Italy
| | - Nikos Donos
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK.
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12
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Park JH, Moon HS, Jung HI, Hwang J, Choi YH, Kim JE. Deep learning and clustering approaches for dental implant size classification based on periapical radiographs. Sci Rep 2023; 13:16856. [PMID: 37803022 PMCID: PMC10558577 DOI: 10.1038/s41598-023-42385-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/09/2023] [Indexed: 10/08/2023] Open
Abstract
This study investigated two artificial intelligence (AI) methods for automatically classifying dental implant diameter and length based on periapical radiographs. The first method, deep learning (DL), involved utilizing the pre-trained VGG16 model and adjusting the fine-tuning degree to analyze image data obtained from periapical radiographs. The second method, clustering analysis, was accomplished by analyzing the implant-specific feature vector derived from three key points coordinates of the dental implant using the k-means++ algorithm and adjusting the weight of the feature vector. DL and clustering model classified dental implant size into nine groups. The performance metrics of AI models were accuracy, sensitivity, specificity, F1-score, positive predictive value, negative predictive value, and area under the receiver operating characteristic curve (AUC-ROC). The final DL model yielded performances above 0.994, 0.950, 0.994, 0.974, 0.952, 0.994, and 0.975, respectively, and the final clustering model yielded performances above 0.983, 0.900, 0.988, 0.923, 0.909, 0.988, and 0.947, respectively. When comparing the AI model before tuning and the final AI model, statistically significant performance improvements were observed in six out of nine groups for DL models and four out of nine groups for clustering models based on AUC-ROC. Two AI models showed reliable classification performances. For clinical applications, AI models require validation on various multicenter data.
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Affiliation(s)
- Ji-Hyun Park
- Department of Prosthodontics, Yonsei University College of Dentistry, Yonsei-ro 50-1, Seodaemun-gu, Seoul, 03722, Korea
| | - Hong Seok Moon
- Department of Prosthodontics, Yonsei University College of Dentistry, Yonsei-ro 50-1, Seodaemun-gu, Seoul, 03722, Korea
| | - Hoi-In Jung
- Department of Preventive Dentistry and Public Oral Health, Yonsei University College of Dentistry, Seoul, 03722, Korea
| | - JaeJoon Hwang
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Dental Research Institute, Pusan National University, Busan, 50612, Korea
| | - Yoon-Ho Choi
- School of Computer Science and Engineering, Pusan National University, Busan, 46241, Korea
| | - Jong-Eun Kim
- Department of Prosthodontics, Yonsei University College of Dentistry, Yonsei-ro 50-1, Seodaemun-gu, Seoul, 03722, Korea.
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13
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Camps-Font O, Rubianes-Porta L, Valmaseda-Castellón E, Jung RE, Gay-Escoda C, Figueiredo R. Comparison of external, internal flat-to-flat, and conical implant abutment connections for implant-supported prostheses: A systematic review and network meta-analysis of randomized clinical trials. J Prosthet Dent 2023; 130:327-340. [PMID: 34776267 DOI: 10.1016/j.prosdent.2021.09.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 01/19/2023]
Abstract
STATEMENT OF PROBLEM The implant abutment connection interface has been considered one of the major factors affecting the outcome of implant therapy. However, drawbacks of traditional meta-analyses are the inability to compare more than 2 treatments at a time, which complicates the decision-making process for dental clinicians, and the lack of a network meta-analysis. PURPOSE The purpose of this network meta-analysis was to assess whether the implant abutment connection influences the outcome of implant-supported prostheses. MATERIAL AND METHODS An electronic search was undertaken to identify all randomized clinical trials comparing the effect of at least 2 different implant abutment connection designs published from 2009 up to May 2020. Outcome variables were implant survival rate, peri-implant marginal bone loss, and biologic and prosthetic complication rates at 12 months after prosthetic loading. Relevant information was extracted, and quality and risk of bias assessed. Pairwise meta-analyses and network meta-analyses based on a multivariate random-effects meta-regression were performed to assess the comparisons (α=.05 for all analyses). RESULTS For peri-implant marginal bone loss and prosthetic complications, conical interfaces were determined to be the most effective, with significant differences when compared with external hexagonal connections (P=.011 and P=.038, respectively). No significant differences were found among the implant abutment connections in terms of survival and biologic complications (P>.05 in all direct, indirect, and mixed comparisons). CONCLUSIONS After 1 year of loading, conical connections showed lower marginal bone loss and fewer prosthetic complications than external hexagonal connections. However, the implant abutment connection design had no influence on the implant survival and biologic complication rates.
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Affiliation(s)
- Octavi Camps-Font
- Associate Professor, Division of Oral Surgery and Implantology, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain.
| | - Laura Rubianes-Porta
- Graduate student, Division of Oral Surgery and Implantology, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
| | - Eduard Valmaseda-Castellón
- Professor, Division of Oral Surgery and Implantology, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
| | - Ronald E Jung
- Head of the Division of Implantology and Vice Chairman of the Center of Dental Medicine of the University of Zürich, Clinic for Fixed and Removable Prosthodontics and Dental Material Science, Zürich, Switzerland
| | - Cosme Gay-Escoda
- Chairman of Division of Oral Surgery and Implantology, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
| | - Rui Figueiredo
- Professor, Division of Oral Surgery and Implantology, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
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14
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Bein L, Rauch A, Schmidt M, Rosentritt M. In vitro fatigue and fracture testing of temporary materials from different manufacturing processes in implant-supported anterior crowns. Clin Oral Investig 2023; 27:4215-4224. [PMID: 37133699 DOI: 10.1007/s00784-023-05038-7] [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: 03/14/2023] [Accepted: 04/22/2023] [Indexed: 05/04/2023]
Abstract
OBJECTIVES The aim of this study was to investigate the in vitro fatigue and fracture force of temporary implant-supported anterior crowns made of different materials with different abutment total occlusal convergence (TOC), with/without a screw channel, and with different types of fabrication. MATERIALS AND METHODS One hundred ninety-two implant-supported crowns were manufactured (4° or 8° TOC; with/without screw channel) form 6 materials (n = 8; 2 × additive, 3 × subtractive, 1 × automix; reference). Crowns were temporarily cemented, screw channels were closed (polytetrafluoroethylene, resin composite), and crowns were stored in water (37 °C; 10 days) before thermal cycling and mechanical loading (TCML). Fracture force was determined. STATISTICS Kolmogorov-Smirnov, ANOVA; Bonferroni; Kaplan-Meier; log-rank; α = 0.05. RESULTS Failure during TCML varied between 0 failures and total failure. Mean survival was between 1.8 × 105 and 4.8 × 105 cycles. The highest impact on survival presented the material (η2 = 0.072, p < .001). Fracture forces varied between 265.7 and 628.6 N. The highest impact on force was found for the material (η2 = 0.084, p < .001). CONCLUSION Additively and subtractively manufactured crowns provided similar or higher survival rates and fracture forces compared to automix crowns. The choice of material is decisive for the survival and fracture force. The fabrication is not crucial. A smaller TOC led to higher fracture force. Manually inserted screw channels had negative effects on fatigue testing. CLINICAL RELEVANCE The highest stability has been shown for crowns with a low TOC, which are manufactured additively and subtractively. In automix-fabricated crowns, manually inserted screw channels have negative effects.
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Affiliation(s)
- Laila Bein
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93042, Regensburg, Germany
| | - Angelika Rauch
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93042, Regensburg, Germany
| | - Michael Schmidt
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93042, Regensburg, Germany
| | - Martin Rosentritt
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93042, Regensburg, Germany.
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15
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Park WS, Huh JK, Lee JH. Automated deep learning for classification of dental implant radiographs using a large multi-center dataset. Sci Rep 2023; 13:4862. [PMID: 36964171 PMCID: PMC10039053 DOI: 10.1038/s41598-023-32118-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/22/2023] [Indexed: 03/26/2023] Open
Abstract
This study aimed to evaluate the accuracy of automated deep learning (DL) algorithm for identifying and classifying various types of dental implant systems (DIS) using a large-scale multicenter dataset. Dental implant radiographs of pos-implant surgery were collected from five college dental hospitals and 10 private dental clinics, and validated by the National Information Society Agency and the Korean Academy of Oral and Maxillofacial Implantology. The dataset contained a total of 156,965 panoramic and periapical radiographic images and comprised 10 manufacturers and 27 different types of DIS. The accuracy, precision, recall, F1 score, and confusion matrix were calculated to evaluate the classification performance of the automated DL algorithm. The performance metrics of the automated DL based on accuracy, precision, recall, and F1 score for 116,756 panoramic and 40,209 periapical radiographic images were 88.53%, 85.70%, 82.30%, and 84.00%, respectively. Using only panoramic images, the DL algorithm achieved 87.89% accuracy, 85.20% precision, 81.10% recall, and 83.10% F1 score, whereas the corresponding values using only periapical images achieved 86.87% accuracy, 84.40% precision, 81.70% recall, and 83.00% F1 score, respectively. Within the study limitations, automated DL shows a reliable classification accuracy based on large-scale and comprehensive datasets. Moreover, we observed no statistically significant difference in accuracy performance between the panoramic and periapical images. The clinical feasibility of the automated DL algorithm requires further confirmation using additional clinical datasets.
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Affiliation(s)
- Won-Se Park
- Korean Academy of Oral and Maxillofacial Implantology (KAOMI) Implant Research Institute, Seoul, Korea
- Department of Advanced General Dentistry, Yonsei University College of Dentistry, Seoul, Korea
| | - Jong-Ki Huh
- Korean Academy of Oral and Maxillofacial Implantology (KAOMI) Implant Research Institute, Seoul, Korea.
- Department of Oral and Maxillofacial Surgery, Gangnam Severance Hospital, Yonsei University College of Dentistry, 211 Eonju-ro, Gangnam-gu, Seoul, 06273, Korea.
| | - Jae-Hong Lee
- Korean Academy of Oral and Maxillofacial Implantology (KAOMI) Implant Research Institute, Seoul, Korea.
- Department of Periodontology, College of Dentistry and Institute of Oral Bioscience, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Korea.
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16
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Katalinić I, Smojver I, Morelato L, Vuletić M, Budimir A, Gabrić D. Evaluation of the Photoactivation Effect of 3% Hydrogen Peroxide in the Disinfection of Dental Implants: In Vitro Study. Biomedicines 2023; 11:biomedicines11041002. [PMID: 37189620 DOI: 10.3390/biomedicines11041002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 05/17/2023] Open
Abstract
Photoactivation of 3% hydrogen peroxide with a 445 nm diode laser represents a relatively new, insufficiently researched antimicrobial method in the treatment of peri-implantitis. The purpose of this work is to evaluate the effect of photoactivation of 3% hydrogen peroxide with a 445 nm diode laser, and to compare the obtained results with 0.2% chlorhexidine treatment and 3% hydrogen peroxide treatment without photoactivation, in vitro, on the surface of dental implants contaminated with S. aureus and C. albicans biofilms. Previously, 80 infected titanium implants with S. aureus and C. albicans cultures were divided into four groups: G1-negative control (no treatment), G2-positive control (0.2% chlorhexidine), G3 (3% hydrogen peroxide), and G4 (photoactivated 3% hydrogen peroxide). The number of viable microbes in each sample was determined by the colony forming unit (CFU) count. The results were statistically processed and analyzed, showing a statistically significant difference across all groups compared to the negative control (G1), and the absence of a statistically significant difference between groups G1-G3. The new antimicrobial treatment, according to the results, could be worthy of further analysis and research.
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Affiliation(s)
| | - Igor Smojver
- Specialty Hospital St. Catherine, 10000 Zagreb, Croatia
| | - Luka Morelato
- Department of Oral Surgery, Faculty of Dental Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Marko Vuletić
- Department of Oral Surgery, School of Dental Medicine, University Hospital Centre Zagreb, University of Zagreb, 10000 Zagreb, Croatia
| | - Ana Budimir
- Department of Clinical and Molecular Microbiology, School of Medicine, University Hospital Centre Zagreb, University of Zagreb, 10000 Zagreb, Croatia
| | - Dragana Gabrić
- Department of Oral Surgery, School of Dental Medicine, University Hospital Centre Zagreb, University of Zagreb, 10000 Zagreb, Croatia
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17
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Alssum LR, Alghofaily MM, Aleyiydi AS, Alomar SA, Alsalleeh FM. The Incidence of Retrograde Peri-Implantitis in a Single University Dental Hospital Training Center: A Retrospective Analysis. Medicina (B Aires) 2023; 59:medicina59030560. [PMID: 36984561 PMCID: PMC10051226 DOI: 10.3390/medicina59030560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/10/2023] [Accepted: 03/12/2023] [Indexed: 03/15/2023] Open
Abstract
Background and objective: Retrograde peri-implantitis (RPI) is a periapical radiolucent lesion developed around the implant apex. This study aimed to investigate the Incidence of RPI in a single university dental hospital training center. Materials and Methods: All records of patients who received single Implants between 2016–2020 were screened. For cases that met inclusion criteria, clinical and radiographic data were analyzed. Results: A total of 215 were included and categorized as follows, Category A: implants were placed next to endodontically treated teeth (n = 58, 27%); category B, implants placed at the sites with previous endodontic involvement within 6 months of tooth extraction (n = 25, 11.6%); Category AB: implants placed at sites that fulfill the criteria of groups A and B (n = 18, 8.4%); and Category C: Implants that were placed next to vital teeth and at a site with no previous endodontic treatment or a site that was allowed to heal for more than six (n = 114, 53%). Categories A, B and AB served as the endodontically involved (EI) group, while category C served as non- endodontically involved (NEI) group. Only two sites (0.9%) were confirmed as RPI, both from group A (3.4%). Comparing all groups studied showed no statistically significant difference in RPI incidence. Conclusions: The incidence of RPI is low; however, endodontically treated teeth with periapical lesions (PALs) next to an implant site could contribute to RPI.
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Affiliation(s)
- Lamees R. Alssum
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia
- Correspondence: ; Tel.: +966-506975695
| | - Maha M. Alghofaily
- Department of Restorative Dental Sciences, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia
| | - Asrar S. Aleyiydi
- College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia
| | - Sadeem A. Alomar
- College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia
| | - Fahd M. Alsalleeh
- Department of Restorative Dental Sciences, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia
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18
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Bornes RS, Montero J, Correia ARM, Rosa NRDN. Use of bioinformatic strategies as a predictive tool in implant-supported oral rehabilitation: A scoping review. J Prosthet Dent 2023; 129:322.e1-322.e8. [PMID: 36710172 DOI: 10.1016/j.prosdent.2022.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/29/2022] [Accepted: 12/29/2022] [Indexed: 01/29/2023]
Abstract
STATEMENT OF PROBLEM The use of bioinformatic strategies is growing in dental implant protocols. The current expansion of Omics sciences and artificial intelligence (AI) algorithms in implant dentistry applications have not been documented and analyzed as a predictive tool for the success of dental implants. PURPOSE The purpose of this scoping review was to analyze how artificial intelligence algorithms and Omics technologies are being applied in the field of oral implantology as a predictive tool for dental implant success. MATERIAL AND METHODS The Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews checklist was followed. A search strategy was created at PubMed and Web of Science to answer the question "How is bioinformatics being applied in the area of oral implantology as a predictive tool for implant success?" RESULTS Thirteen articles were included in this review. Only 3 applied bioinformatic models combining AI algorithms and Omics technologies. These studies highlighted 2 key points for the creation of precision medicine: deep population phenotyping and the integration of Omics sciences in clinical protocols. Most of the studies identified applied AI only in the identification and classification of implant systems, quantification of peri-implant bone loss, and 3-dimensional bone analysis, planning implant placement. CONCLUSIONS The conventional criteria currently used as a technique for the diagnosis and monitoring of dental implants are insufficient and have low accuracy. Models that apply AI algorithms combined with precision methodologies-biomarkers-are extremely useful in the creation of precision medicine, allowing medical dentists to forecast the success of the implant. Tools that integrate the different types of data, including imaging, molecular, risk factor, and implant characteristics, are needed to make a more accurate and personalized prediction of implant success.
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Affiliation(s)
- Rita Silva Bornes
- Guest Lecturer, Universidade Católica Portuguesa, Faculty of Dental Medicine (FMD), Center for Interdisciplinary Research in Health (CIIS), Viseu, Portugal.
| | - Javier Montero
- Full professor in Prosthodontics, Department of Surgery, Faculty of Medicine, University of Salamanca, Salamanca, Spain
| | - André Ricardo Maia Correia
- Assistant Professor, Universidade Católica Portuguesa, Faculty of Dental Medicine (FMD), Center for Interdisciplinary Research in Health (CIIS), Viseu, Portugal
| | - Nuno Ricardo das Neves Rosa
- Assistant Professor, Universidade Católica Portuguesa, Faculty of Dental Medicine (FMD), Center for Interdisciplinary Research in Health (CIIS), Viseu, Portugal
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19
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Donos N, Calciolari E, Ghuman M, Baccini M, Sousa V, Nibali L. The efficacy of bone reconstructive therapies in the management of peri-implantitis. A systematic review and meta-analysis. J Clin Periodontol 2023. [PMID: 36635029 DOI: 10.1111/jcpe.13775] [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: 08/27/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/14/2023]
Abstract
AIM To evaluate the efficacy of bone reconstructive procedures for the reduction of probing pocket depth (PPD), bleeding on probing (BOP), and suppuration in peri-implantitis-related bone defects at ≥12-month follow-up. MATERIALS AND METHODS Three databases were searched for randomized controlled trials (RCTs) and controlled clinical trials (CCTs) that compared bone reconstructive therapies to access flap surgery (AFS) (Focused Question-FQ 1), and RCTs, CCTs, and prospective case series that assessed the efficacy of reconstructive therapies (FQ 2). Meta-analysis was performed for FQ1 when more than three studies were identified, while for FQ2 a network was drawn based on RCTs with common treatment arms. RESULTS Seven RCTs were identified for FQ1 while five RCTs and six prospective case series for FQ2. There was no significant difference in PPD change between AFS and reconstructive surgery (-0.387; p = .325) at 12 months. Furthermore, no clear differences in terms of PPD and BOP changes resulted from the different reconstructive therapies included in the network. Only a small percentage of treated cases with any modality achieved peri-implantitis resolution, as defined by different composite outcomes. CONCLUSIONS Reconstructive surgery does not offer significant improvements in peri-implant clinical parameters as compared to AFS at 12 months. It was not possible to establish a hierarchy of efficacy among the different biomaterials employed for reconstructive surgery.
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Affiliation(s)
- Nikos Donos
- Centre for Oral Clinical Research, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Elena Calciolari
- Centre for Oral Clinical Research, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Centro di Odontoiatria, Dipartimento di Medicina e Chirurgia, Università di Parma, Parma, Italy
| | - Mandeep Ghuman
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral and Craniofacial Sciences, Kings College London, Guy's Hospital, London, UK
| | - Michela Baccini
- Dipartimento di Statistica, Informatica, Applicazioni 'G. Parenti' (DiSIA), University of Florence, Florence, Italy
| | - Vanessa Sousa
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral and Craniofacial Sciences, Kings College London, Guy's Hospital, London, UK
| | - Luigi Nibali
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral and Craniofacial Sciences, Kings College London, Guy's Hospital, London, UK
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20
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Tabrizi R, Rasaei M, Moslemi H, Shafiei S, Latifi F. Does Bruxism Affect Marginal Bone Level around Single Tooth Implants in the Posterior Mandible? J Maxillofac Oral Surg 2022; 21:1162-1167. [PMID: 36896080 PMCID: PMC9989056 DOI: 10.1007/s12663-021-01617-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 07/06/2021] [Indexed: 10/20/2022] Open
Abstract
Background Parafunctional forces are a potential risk factor for implant-related complications. This study aimed to evaluate the possible relationship of bruxism with implant-related complications and marginal bone loss (MBL). Methods In this prospective cohort study, patients were divided into two groups with and without bruxism, and received single-tooth implants in the posterior mandible. Patients in the bruxer group were requested to use a customized fabricated night guard. Bone quality was also assessed based on CBCT scans. The MBL, crown detachment, and porcelain fracture were evaluated, and clinical assessments were made at the 12-month follow-up. Results Seventy patients were studied in two groups (n = 35 in each group). None of the implants in any of the two groups showed pain, sensitivity, suppuration, exudation, clinically detectable mobility, or peri-implant radiolucency. No significant difference was observed between the two groups in the mean MBL at the 12-month follow-up (p = 0.60). Regarding bone quality, there was no significant difference in the mean MBL among different types of bone qualities (p = 0.66). There were no significant differences regarding crown detachment and porcelain fracture between the two groups either (p = 0.32 and p = 0.30, respectively). Conclusion According to the results of this study, dental implant treatment according to the suggested protocol in bruxers yielded promising outcomes.
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Affiliation(s)
- Reza Tabrizi
- Department of Oral and Maxillofacial Surgery, Dental School, Shahid Beheshti University of Medical Sciences, Danshjoo BLVD, Velenjak, Shahid, Chamran Highway, 1983963113 Tehran, Iran
| | - Mahdie Rasaei
- Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamidreza Moslemi
- Department of Oral and Maxillofacial Surgery, Dental School, Shahid Beheshti University of Medical Sciences, Danshjoo BLVD, Velenjak, Shahid, Chamran Highway, 1983963113 Tehran, Iran
| | - Shervin Shafiei
- Department of Oral and Maxillofacial Surgery, Dental School, Shahid Beheshti University of Medical Sciences, Danshjoo BLVD, Velenjak, Shahid, Chamran Highway, 1983963113 Tehran, Iran
| | - Fatemeh Latifi
- Department of Oral and Maxillofacial Surgery, Dental School, Shahid Beheshti University of Medical Sciences, Danshjoo BLVD, Velenjak, Shahid, Chamran Highway, 1983963113 Tehran, Iran
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21
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Diaz P, Gonzalo E, Villagra LJG, Miegimolle B, Suarez MJ. What is the prevalence of peri-implantitis? A systematic review and meta-analysis. BMC Oral Health 2022; 22:449. [PMID: 36261829 PMCID: PMC9583568 DOI: 10.1186/s12903-022-02493-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 10/04/2022] [Indexed: 11/10/2022] Open
Abstract
Background Peri-implantitis is a usual finding but estimates of its prevalence fluctuate very much. This may be due to the wide variety of disease definitions. This systematic review aims to estimate the overall prevalence of peri-implantitis and the effect of different study designs, function times and use of probing depth on prevalence rate. Methods Following electronic and manual searches of the literature published from January 2005 to December 2021, data were extracted from the studies fitting the study criteria. Fifty-seven articles were included in this study. Results Prevalence of peri-implantitis was 19.53% (95% CI 12.87–26.19) at the patient-level, and 12.53% (95% CI 11.67–13.39) at the implant-level and it remains highly variable even following restriction to the clinical case definition. The use of probing depth like diagnostic criteria affected the prevalence data. Conclusion The results indicate that it remains essential the identification of the diagnostic markers for more accurate disease classification.
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Affiliation(s)
- Pedro Diaz
- Department of Conservative Dentistry and Bucofacial Prosthesis, Faculty of Odontology, University Complutense of Madrid (UCM), Pza Ramón y Cajal S/N, 28040, Madrid, Spain
| | - Esther Gonzalo
- Department of Conservative Dentistry and Bucofacial Prosthesis, Faculty of Odontology, University Complutense of Madrid (UCM), Pza Ramón y Cajal S/N, 28040, Madrid, Spain.
| | - Luis J Gil Villagra
- Department of Conservative Dentistry and Bucofacial Prosthesis, Faculty of Odontology, University Complutense of Madrid (UCM), Pza Ramón y Cajal S/N, 28040, Madrid, Spain
| | - Barbara Miegimolle
- Department of Conservative Dentistry and Bucofacial Prosthesis, Faculty of Odontology, University Complutense of Madrid (UCM), Pza Ramón y Cajal S/N, 28040, Madrid, Spain
| | - Maria J Suarez
- Department of Conservative Dentistry and Bucofacial Prosthesis, Faculty of Odontology, University Complutense of Madrid (UCM), Pza Ramón y Cajal S/N, 28040, Madrid, Spain
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22
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Yang F, Ruan Y, Liu Y, Chen J, Chen Y, Zhang W, Ding Y, Wang L. Abutment mechanical complications of a Morse taper connection implant system: A 1- to 9-year retrospective study. Clin Implant Dent Relat Res 2022; 24:683-695. [PMID: 35791805 PMCID: PMC9796380 DOI: 10.1111/cid.13115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/29/2022] [Accepted: 05/30/2022] [Indexed: 01/01/2023]
Abstract
BACKGROUND The fracture of a Morse tapered abutment connection in an osseointegrated implant is one of the most serious mechanical complications, and it is extremely hard to deal with this complication in clinical practice. PURPOSE The aim of this study was to explore the cumulative mechanical complications focus on abutment of a platform switching Morse taper connection implant system after loading, and to perform a retrospective, approximately 1- to 9-year follow-up study to identify the predisposing factors. MATERIALS AND METHODS A total of 495 patients with 945 fitted implants were enrolled in this study with a follow-up from January 2012 to January 2020. The data of mechanical complications of the abutment, including abutment fracture (AF) and abutment screw loosening (ASL), and possible causative factors were extracted and evaluated statistically. RESULTS A total of 25 out of 945 (2.65%) cumulative abutment mechanical complications occurred. AF was the most common complication (n = 13, 1.38%), followed by ASL (n = 12, 1.27%). For AF, gender, type of prosthesis, abutment design, and implant diameter were identified as the causative factors. AF was mostly observed in the single crown of males in molar areas, while ASL was more likely to occur on an angled abutment than on a non-angled abutment. Moreover, the abutment with the positioning index (/X) had a higher incidence of fracture than the abutment without the positioning index (C/). CONCLUSIONS This study shows that the Morse taper connection is a safe abutment connection. AF occurs more frequently within single crowns in molar area of males, especially with the positioning index (/X), while ASL is more likely to occur in an angled abutment.
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Affiliation(s)
- Fan Yang
- Center for Plastic & Reconstructive Surgery, Department of StomatologyZhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College)HangzhouZhejiangChina
| | - Yan Ruan
- Department of StomatologyBengbu Medical CollegeBengbuAnhuiChina
| | - Yunqing Liu
- Department of Restorative Dentistry, Division of Oral Health Science, Graduate School of Dental MedicineHokkaido UniversitySapporoJapan
| | - Jianping Chen
- Center for Plastic & Reconstructive Surgery, Department of StomatologyZhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College)HangzhouZhejiangChina
| | - Yunfang Chen
- Center for Plastic & Reconstructive Surgery, Department of StomatologyZhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College)HangzhouZhejiangChina
| | - Wentao Zhang
- Center for Plastic & Reconstructive Surgery, Department of StomatologyZhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College)HangzhouZhejiangChina
| | - Yude Ding
- Center for Plastic & Reconstructive Surgery, Department of StomatologyZhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College)HangzhouZhejiangChina
| | - Linhong Wang
- Center for Plastic & Reconstructive Surgery, Department of StomatologyZhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College)HangzhouZhejiangChina,Department of Restorative Dentistry, Division of Oral Health Science, Graduate School of Dental MedicineHokkaido UniversitySapporoJapan
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23
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Jornet-García A, Sanchez-Perez A, Montoya-Carralero JM, Moya-Villaescusa MJ. Electrical Potentiometry with Intraoral Applications. MATERIALS 2022; 15:ma15155100. [PMID: 35897533 PMCID: PMC9331720 DOI: 10.3390/ma15155100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/09/2022] [Accepted: 07/21/2022] [Indexed: 02/04/2023]
Abstract
Dental implants currently in use are mainly made of titanium or titanium alloys. As these metallic elements are immersed in an electrolytic medium, galvanic currents are produced between them or with other metals present in the mouth. These bimetallic currents have three potentially harmful effects on the patient: micro-discharges, corrosion, and finally, the dispersion of metal ions or their oxides, all of which have been extensively demonstrated in vitro. In this original work, a system for measuring the potentials generated in vivo is developed. Specifically, it is an electrogalvanic measurements system coupled with a periodontal probe that allows measurement of the potentials in the peri-implant sulcus. This device was tested and verified in vitro to guarantee its applicability in vivo. As a conclusion, this system is able to detect galvanic currents in vitro and it can be considered capable of being employed in vivo, so to assess the effects they may cause on dental implants.
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Dhondt R, Quirynen M, Tarce M, Teughels W, Temmerman A, Jacobs R. The accuracy of probing, ultrasound and cone-beam CT scans for determining the buccal bone plate dimensions around oral implants - A systematic review. J Periodontal Res 2022; 57:754-767. [PMID: 35612409 DOI: 10.1111/jre.12998] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/29/2022] [Accepted: 04/19/2022] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The objective of this review was to assess the accuracy of available means of determining the BBT (buccal bone thickness) and/or BBL (buccal bone level). This was translated into the following research question: What is the accuracy of the available means of visualizing the BBP (buccal bone plate) to establish the BBT and/or the BBL, when compared to control measurements? As control measurements histomorphometric measurements, direct measurements and cone-beam computed tomography (CBCT) measurements in the absence of metal are accepted. BACKGROUND DATA METHODS: The literary search was performed by searching the databases of MEDLINE, Embase, and Web of Science, up to July 13, 2021. Types of studies included were clinical, in vitro and animal trials, specifically looking into the bone level and/or bone thickness of the buccal bone plate at oral implants. Reference lists were hand searched for relevant articles. Two reviewers performed the data extraction and analysis. Only studies using reliable control measurements to evaluate the accuracy of the tested means of visualizing BBT and/or BBL were included for analysis. The QUADAS-2 tool was used to perform bias analysis on the relevant studies. Extracted data was tabulated to show the differences between test and control measurements for BBT and BBL. For in vitro studies on CBCT measurements of BBT meta-analysis could be performed. RESULTS A total of 1176 papers were identified in the search. Twenty-two articles were used for data extraction and qualitative analysis. Of these studies nine were animal studies, 9 were in vitro studies and four were human studies. Six animal studies and three human studies provided data on probing. CBCT and sonography as techniques for visualizing the buccal bone plate. Probing at implant sites seems to provide data that correlates with a consistent distance from the BBP. Meta-analysis for probing studies could not be performed due to heterogeneity in the setups of these studies. Eleven studies on CBCT were eligible for inclusion. Of these three were animal studies, the remaining 8 studies were all in vitro studies. Meta-analysis was performed on the accuracy of CBCT for in vitro studies, finding a significant underestimation of the BBT when compared to control measurements by a mean difference of -0.15 mm with 95%CI [-0.26,-0.03]. Three studies were identified on measurement of BBT and/or BBL by sonography. This included one human study and two in vitro studies. The identified studies show a low error when determining the buccal bone level or thickness using sonography. All included studies possess a high risk of bias according to risk of bias analysis, mostly due to selection of the patient. CONCLUSION A strong limitation of this systematic review is the inclusion of different studies with heterogeneous designs. Within the limits of this analysis it cannot be concluded that probing is an accurate way of visualizing the BBP. CBCT cannot yet be recommended as a standard diagnostic tool for follow-up of the BBP at oral implants. The application of sonography as a diagnostic tool to visualize the BBP needs further scientific validation.
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Affiliation(s)
- Rutger Dhondt
- Katholieke Universiteit Leuven Universitaire Ziekenhuizen Leuven, Leuven, Belgium
| | - Marc Quirynen
- Katholieke Universiteit Leuven Universitaire Ziekenhuizen Leuven, Leuven, Belgium
| | - Mihai Tarce
- Katholieke Universiteit Leuven Universitaire Ziekenhuizen Leuven, Leuven, Belgium
| | - Wim Teughels
- Katholieke Universiteit Leuven Universitaire Ziekenhuizen Leuven, Leuven, Belgium
| | - Andy Temmerman
- Katholieke Universiteit Leuven Universitaire Ziekenhuizen Leuven, Leuven, Belgium
| | - Reinhilde Jacobs
- Katholieke Universiteit Leuven Universitaire Ziekenhuizen Leuven, Leuven, Belgium
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25
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Gasser TJW, Papageorgiou SN, Eliades T, Hämmerle CHF, Thoma DS. Interproximal contact loss at implant sites: a retrospective clinical study with a 10-year follow-up. Clin Oral Implants Res 2022; 33:482-491. [PMID: 35194854 PMCID: PMC9311812 DOI: 10.1111/clr.13908] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 11/10/2021] [Accepted: 02/02/2022] [Indexed: 11/30/2022]
Abstract
AIM To assess the frequency and quantity of interproximal contact loss (ICL) between implant restorations and adjacent teeth after at least 10 years of follow-up (FU). METHODS Thirty-nine patients (median age 57.3 years) with 80 implants were re-examined at least 10 years after insertion of final restorations (single-crowns or fixed dental prostheses (FDPs)). Baseline (insertion of the restorations) and FU examinations encompassed: stone casts were scanned and superimposed for metric assessment of tooth movements, radiographs and clinical measurements. Outcome measures at implant sites were: the extent of tooth movement and the frequency of interproximal contact loss [ICL], peri-implant marginal bone levels [MBLs], and clinical measurements (plaque control record [PCR], bleeding on probing [BOP] and probing depth [PD]). Data were analyzed statistically with generalized regression modelling with robust standard errors to account for within-patient clustering at 5%. RESULTS ICL for at least one contact point after 10 years was observed in 50% of all implants (with open interproximal spaces up to 1.64 mm). Mesial contact points were significantly more prone to ICL than distal ones (relative risk [RR]=1.79; 95% confidence interval [CI]=1.07-2.99; p=0.03). The type of restoration had a significant effect on ICL, with FDPs of 2 implants being significantly more prone to mesial ICL than single crowns (RR=1.52; 95% CI=1.02-2.25; p=0.04). ICL was also associated with a significant increase in PD (+0.46 mm (95% CI=0.04-0.88 mm; P=0.03)) compared to implant sites without ICL. BOP, MBLs and PCR were not significantly influenced by ICL. CONCLUSION ICL was a common finding in 50% of the implant sites and was significantly associated with an increase in PD.
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Affiliation(s)
- Thomas J W Gasser
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Switzerland
| | - Spyridon N Papageorgiou
- Clinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, University of Zurich, Switzerland
| | - Theodore Eliades
- Clinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, University of Zurich, Switzerland
| | - Christoph H F Hämmerle
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Switzerland
| | - Daniel S Thoma
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, Switzerland.,Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
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26
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Alrakkad IA, Alrakkad RA, Altamimi MS, Alshammari NM, Alghuraymil AAS, John MAM, Jalal RA, Alsayegh SY, Linjawi L, Otayn WAK, Alshabib ZYA, Alharthi SH. Review on Dental Implant and Infection Management Approach. ARCHIVES OF PHARMACY PRACTICE 2022. [DOI: 10.51847/vhoopcpemv] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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27
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Traboulsi-Garet B, González-Barnadas A, Camps-Font O, Figueiredo R, Valmaseda-Castellón E. Influence of Different Incision Designs on Flap Extension: A Cadaveric Animal Model. J ORAL IMPLANTOL 2021; 47:395-400. [PMID: 33031545 DOI: 10.1563/aaid-joi-d-20-00026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It is well known that wound dehiscence is one of the most frequent complications in guided bone regeneration. The main cause of this complication may be a lack of tension-free and primary wound closure. The aim of this study was to evaluate and compare the effect of periosteal releasing incisions (PRI) on the extension of 3 different flap designs: envelope, triangular, and trapezoidal. Twelve pig mandibles were used to quantify extension of the flap designs. The mandibles were equally and randomly distributed into the 3 flap groups. Each mandible was divided into 2 sides: 1 was subjected to a PRI and the other not. The flap was pulled with a force of 1.08 N, and the extension was recorded. The subgroups without PRI showed an average extension of 5.14 mm with no statistically significant differences among them (P = .165). The PRI provided an average extension of 7.37 mm with statistically significant differences among the subgroups (P < .001). The releasing incisions significantly increased flap extension in each flap design. The increase in extension of the trapezoidal flap with PRI was significantly greater than in the other subgroups. In cases where primary closure is required, surgeons should consider performing trapezoidal flaps with PRI in order to reduce tension.
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Affiliation(s)
| | | | - Octavi Camps-Font
- Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
| | - Rui Figueiredo
- Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
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Minetti E, Celko M, Contessi M, Carini F, Gambardella U, Giacometti E, Santillana J, Beca Campoy T, Schmitz JH, Libertucci M, Ho H, Haan S, Mastrangelo F. Implants Survival Rate in Regenerated Sites with Innovative Graft Biomaterials: 1 Year Follow-Up. MATERIALS 2021; 14:ma14185292. [PMID: 34576516 PMCID: PMC8472708 DOI: 10.3390/ma14185292] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/07/2021] [Accepted: 09/09/2021] [Indexed: 01/26/2023]
Abstract
In thirteen different dental clinics in Singapore, Spain, Czech Republic and Italy, 504 patients were selected, and 483 dental implants were placed in maxillary sites after alveolar socket preservation (ASP) procedures with an autologous demineralized tooth extracted as graft material from an innovative Tooth Transformer device was obtained. All procedures used were reported in n°638 Ethical Committee surgical protocol of University of Chieti and approved. After 4 months, at dental implant placing, bone biopsies were performed to evaluate the histologic outcomes, and 12 months after implant loading, global implant survival rate, failure percentage and peri-implant bone loss were detected. After ASP, only 27 post-operative complications were observed and after 4 months, bone biopsy histomorphometric analysis showed a high percentage of bone volume (BV) 43.58 (±12.09), and vital new bone (NB) 32.38 (±17.15) with an absence of inflammation or necrosis areas. Twelve months after loading, only 10 dental implants failed (2.3%), with a 98.2% overall implant survival rate, nine cases showed mucositis (1.8%) and eight showed peri-implantitis (1.6%). At mesial sites, 0.43 mm (±0.83) of bone loss around the implants was detected and 0.23 mm (±0.38) at the distal sites with an average value of 0.37 mm (±0.68) (p > 0.568). Several studies with a longer follow-up will be necessary to confirm the preliminary data observed. However, clinical results seem to suggest that the post-extraction socket preservation procedure using innovative demineralized autologous tooth-derived biomaterial may be a predictable procedure to produce new vital bone able to support dental implant rehabilitation of maxilla edentulous sites.
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Affiliation(s)
- Elio Minetti
- Department of Biomedical, Surgical, Dental Science, University of Milan, 20161 Milan, Italy
- Correspondence: (E.M.); (F.M.)
| | - Martin Celko
- Independent Researcher, 500 02 Hradec Kralove, Czech Republic;
| | | | - Fabrizio Carini
- Department School of Medicine and Surgery, University of Milano Bicocca, 20100 Milan, Italy;
| | | | - Edoardo Giacometti
- Department of Medical Sciences and Diagnostic Integrated, University of Genoa, 16121 Genova, Italy;
| | | | | | | | | | - Henrykim Ho
- Independent Researcher, Singapore 238863, Singapore; (H.H.); (S.H.)
| | - Simon Haan
- Independent Researcher, Singapore 238863, Singapore; (H.H.); (S.H.)
| | - Filiberto Mastrangelo
- Clinical and Experimental Medicine Department, School of Dentistry University of Foggia, 71122 Foggia, Italy
- Correspondence: (E.M.); (F.M.)
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29
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Song JY. Implant complications in bruxism patients. J Korean Assoc Oral Maxillofac Surg 2021; 47:149-150. [PMID: 33911049 PMCID: PMC8084741 DOI: 10.5125/jkaoms.2021.47.2.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 03/29/2021] [Indexed: 11/07/2022] Open
Abstract
Bruxism is defined as a parafunctional activity during sleep or while awake that includes locking and grinding of teeth and clenching. It generates excessive occlusal force that may lead to implant failure. Therefore, diagnosis of bruxism and providing specific protocols such as occlusal splint and/or injection of botulinum toxin before implant installation are important to prevent increases the risk of implant failure in bruxism patients.
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Affiliation(s)
- Ji-Young Song
- Department of Dentistry, School of Medicine, Jeju National University, Jeju, Korea
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30
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Takamoli J, Pascual A, Martinez-Amargant J, Garcia-Mur B, Nart J, Valles C. Implant failure and associated risk indicators: A retrospective study. Clin Oral Implants Res 2021; 32:619-628. [PMID: 33629418 DOI: 10.1111/clr.13732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 01/25/2021] [Accepted: 02/08/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To evaluate early and late implant loss rates in a sample of patients who had received implant therapy in a university setting as well as patient- and implant-related variables for implant failure. MATERIAL AND METHODS This is a retrospective analysis in a cohort of patients who were treated with implant-supported restorative therapy during the period 2001-2012. Patients were randomly selected from an electronic database and scheduled for an appointment to record subject and implant characteristics. The primary study outcome was implant loss (i.e., early and late implant failure). RESULTS A total of 190 patients and 710 implants were included. The mean time in function was 8.2 (SD 2.4) years. Four implants (0.6%) failed in four patients (2.1%) prior to connection of the restoration within a mean period of 1.5 (SD 1.3) months after surgical procedure. Moreover, 17 subjects (8.9%) exhibited late implant failure, representing 26 implants (3.7%), after a mean follow-up of 5 years (SD 2.2) from prosthesis connection. The final multivariable model indicated three factors related to late implant failure: subjects <55 years (OR = 3.62; 95% CI 1.46-10.22; p = .002), smokers/former smokers (OR = 6.25; 95% CI 1.70-17.52; p = .005), and implants with no access to interproximal hygiene (OR = 7.25; 95% CI 2.20-28.25; p < .001). CONCLUSIONS The rate for early and late implant failure in a sample of 190 patients who had received implant therapy in a university setting was 2.1% and 8.9%, respectively, at subject level. Subjects <55 years and smokers/former smokers as well as implants with inadequate access to interproximal hygiene were significantly associated with late implant failure.
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Affiliation(s)
- Joan Takamoli
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Andres Pascual
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | | | - Berta Garcia-Mur
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Jose Nart
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Cristina Valles
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
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31
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Prieto-Barrio P, Khoury-Ribas L, Rovira-Lastra B, Ayuso-Montero R, Martinez-Gomis J. Variation in dental occlusal schemes two years after placement of single-implant posterior crowns. A preliminary study. J ORAL IMPLANTOL 2021; 48:110-116. [PMID: 33710324 DOI: 10.1563/aaid-joi-d-19-00239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Some authors have recommended that implant-supported single crowns should only contact during heavy clenching. However, a lack of occlusal contact with moderate clenching may cause supra-eruption of antagonist natural teeth. The main objective of this study was to assess changes in the occlusal contacts of posterior implant-supported single crowns with natural antagonist teeth two years after placement. The occlusal schemes of 14 patients who received 16 implant-supported single crowns in molar and premolar regions were assessed in this prospective study. Just after crown placement, at 6 months and after 2 years a silicone maxillomandibular relationship and T-scan records were obtained during the intercuspal position with light and heavy clenching, determined using near half of the maximum force and maximum force respectively. Occlusal contacts were assessed quantitatively and qualitatively in the implant-supported single crowns, contralateral tooth and adjacent tooth; the latter two were used as controls. After six months and two years, no significant variations were observed in any region of the occlusal scheme in any assessments, including silicone record or T-Scan, using light or heavy clenching, and qualitative or quantitative occlusal contact assessment. In this preliminary study, the occlusal scheme did not vary at the intercuspal position two years after placing posterior implant-supported single crowns.
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Affiliation(s)
- Paula Prieto-Barrio
- Department of Prosthodontics, School of Dentistry, Faculty of Medicine and Health Sciences, University of Barcelona, Catalonia, Spain
| | - Laura Khoury-Ribas
- Department of Prosthodontics, School of Dentistry, Faculty of Medicine and Health Sciences, University of Barcelona.Oral Health and Masticatory System Group (Bellvitge Biomedical Research Institute) IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Bernat Rovira-Lastra
- Department of Prosthodontics, School of Dentistry, Faculty of Medicine and Health Sciences, University of Barcelona.Oral Health and Masticatory System Group (Bellvitge Biomedical Research Institute) IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Raul Ayuso-Montero
- Universitat de Barcelona Assistant Professor Odontostomatology Feixa Llarga s/n SPAIN Hospitalet de Llobregat Catalonia 08907 Department of Prosthodontics, School of Dentistry, Faculty of Medicine and Health Sciences, University of Barcelona.Oral Health and Masticatory System Group (Bellvitge Biomedical Research Institute) IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Jordi Martinez-Gomis
- Department of Prosthodontics, School of Dentistry, Faculty of Medicine and Health Sciences, University of Barcelona, Catalonia, SpainOral Health and Masticatory System Group (Bellvitge Biomedical Research Institute) IDIBELL, L'Hospitalet de Llobregat
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32
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Latimer JM, Gharpure AS, Kahng HJ, Aljofi FE, Daubert DM. Interproximal open contacts between implant restorations and adjacent natural teeth as a risk-indicator for peri-implant disease-A cross-sectional study. Clin Oral Implants Res 2021; 32:598-607. [PMID: 33629375 DOI: 10.1111/clr.13730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 01/27/2021] [Accepted: 02/17/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The primary aim of this study was to investigate the relationship between interproximal open contacts and peri-implant disease. The secondary aim was to assess patient-reported outcome measures in relation to contact status. MATERIALS AND METHODS A cross-sectional study was performed on 61 patients with 142 implants adjacent to at least one natural tooth. Patients underwent a clinical examination to assess contact status and width, plaque index (PI), gingival index (GI), periodontal probing depths (PPD), and bleeding on probing (BoP). Radiographic marginal bone level was measured in vertical bitewings taken within one year. A diagnosis was given to each implant. Last, subjects completed a brief questionnaire. Rao-scott chi-squared tests and generalized estimating equations (GEE) models were used to compare outcomes between groups. RESULTS Seventy-seven (54.2%) implants were found to have ≥1 interproximal open contact. Sixty-five (45.8%) implants had closed contacts only. Implants with interproximal open contacts were significantly associated with peri-implant mucositis and peri-implantitis (p = .003) and increased prevalence of peri-implant disease (adjusted PR = 1.57; 95% CI: 1.09-2.27, p = .015). Open contact status was also associated with higher PPD (p = .045), PI scores (p = .036), and GI scores (p = .021). Open contact prevalence was 75.4% on the patient-level and 54.2% on the implant-level, involving the mesial surface of the implant restorations 68.5% of the time (p < .001). CONCLUSION Interproximal open contacts between implant restorations and adjacent natural teeth are a risk indicator for peri-implant disease. Adequate contact between implant restorations and natural teeth may contribute to the health of peri-implant tissues.
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Affiliation(s)
- Jessica M Latimer
- Department of Periodontics, University of Washington School of Dentistry, Seattle, WA, USA.,Division of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Amit S Gharpure
- Department of Periodontics, University of Washington School of Dentistry, Seattle, WA, USA
| | - Hahngoo J Kahng
- Department of Periodontics, University of Washington School of Dentistry, Seattle, WA, USA
| | - Faisal E Aljofi
- Preventive Dental Science Department, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Diane M Daubert
- Department of Periodontics, University of Washington School of Dentistry, Seattle, WA, USA
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33
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Vilarrasa J, Peña M, Gumbau L, Monje A, Nart J. Exploring the relationship among dental caries, nutritional habits, and peri-implantitis. J Periodontol 2021; 92:1306-1316. [PMID: 33599333 DOI: 10.1002/jper.20-0879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/01/2021] [Accepted: 02/01/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND A study was made of the prevalence, co-occurrence and association among caries, nutritional habits, and peri-implant disease, with an analysis of the influence of other patient and implant factors upon peri-implant disease. METHODS The included subjects underwent a clinical examination and were asked to complete a questionnaire. Demographic data and potential lifestyle/behavioral variables were collected. Clinical and radiographic assessment allowed calculation of the decayed, missing and filled teeth (DMFT) index and peri-implant diagnosis. Uni- and multivariate multinomial logistic regression analyses were applied to identify predictors of peri-implant disease. RESULTS A total of 169 patients with 311 implants were studied. At patient level, 92.2% of the subjects presented at least one carious lesion, whereas 22.5% and 56.2% were diagnosed with peri-implantitis and mucositis, respectively. Those patients with more than two caries had a higher risk of mucositis (OR = 3.33). Statistically significant associations for peri-implantitis included full mouth periodontal indexes, sugar-rich diets, keratinized mucosa width, number of missing teeth and interproximal untreated caries or fillings adjacent to implants. CONCLUSION High caries risk profiles and mucositis/peri-implantitis tended to accumulate within subjects. A sugar-enriched diet and untreated caries or fillings adjacent to implant sites may be further considered as risk indicators of peri-implantitis.
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Affiliation(s)
- Javi Vilarrasa
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Marta Peña
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Laura Gumbau
- Faculty of Dentistry, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Alberto Monje
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain.,Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan
| | - José Nart
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
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Hartlev J, Schou S, Isidor F, Nørholt SE. A clinical and radiographic study of implants placed in autogenous bone grafts covered by either a platelet-rich fibrin membrane or deproteinised bovine bone mineral and a collagen membrane: a pilot randomised controlled clinical trial with a 2-year follow-up. Int J Implant Dent 2021; 7:8. [PMID: 33554323 PMCID: PMC7868310 DOI: 10.1186/s40729-021-00289-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 01/08/2021] [Indexed: 11/25/2022] Open
Abstract
Purpose To compare the survival and clinical performance of implants placed in sites previously augmented with autogenous bone grafts covered by either a platelet-rich fibrin (PRF) membrane (PRF group) or a standard procedure (gold standard) involving coverage of the autogenous bone graft with deproteinised bovine bone mineral and a resorbable collagen membrane (control group). Methods A total of 27 partially edentulous patients (test n = 14, control n = 13) with indication for staged lateral bone block augmentation and dental implant placement were included. Twenty-four months after crown placement (range: 14–32 months), patients were recalled for a final clinical and radiographic follow-up. Outcome measures were implant survival, implant crown survival, clinical parameters of the implant, peri-implant marginal bone level, marginal bone level of adjacent tooth surfaces, biological and technical complications and patient-related outcome measures. Results Two implants were lost in the control group (85% survival rate); none were lost in the PRF group (100% survival rate). None of the 26 initially placed implant crowns were lost, but one implant and therefore one implant crown were lost after 20 months. Consequently, the definitive implant crown survival was 92% (95% confidence interval (CI): 73–110%) in the control group and 100% in the PRF group. No statistical difference in implant survival rate (p = 0.13) or implant crown survival was seen between the groups (p = 0.28). The mean marginal bone level at the follow-up was 0.26 mm (95% CI: 0.01–0.50 mm) in the PRF group and 0.68 mm (95% CI: 0.41–0.96 mm) in the control group. The difference between the groups was − 0.43 mm (95% CI: − 0.80 to − 0.05 mm, p = 0.03), which was statistically significant (p = 0.03). Both groups demonstrated similar healthy peri-implant soft tissue values at the final follow-up. Conclusion Although the current study is based on a small sample of participants, the findings suggest that the methodology of the PRF and the control group approach can both be used for bone augmentation with a similar outcome. A significant, but clinically irrelevant, higher peri-implant marginal bone level was registered in the PRF group than in the control group. Patients in both groups were highly satisfied with the treatment. Trial registration ClinicalTrials.gov Identifier: NCT04350749. Registered 17 April 2020. Retrospectively registered.
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Affiliation(s)
- Jens Hartlev
- Section for Oral Surgery and Oral Pathology, Department of Dentistry and Oral Health, Health, Aarhus University, Vennelyst Boulevard 9, DK-8000, Aarhus C, Denmark.
| | - Søren Schou
- Department of Periodontology, School of Dentistry, Faculty of Health Sciences, University of Copenhagen, Noerre Alle 20, DK-2200, Copenhagen N, Denmark
| | - Flemming Isidor
- Section for Prosthetics, Department of Dentistry and Oral Health, Health, Aarhus University, Vennelyst Boulevard 9, DK-8000, Aarhus C, Denmark
| | - Sven Erik Nørholt
- Section for Oral Surgery and Oral Pathology, Department of Dentistry and Oral Health, Health, Aarhus University, Vennelyst Boulevard 9, DK-8000, Aarhus C, Denmark.,Department of Oral and Maxillofacial Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, DK-8200, Aarhus N, Denmark
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35
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Jiang X, Zhu Y, Liu Z, Tian Z, Zhu S. Association between diabetes and dental implant complications: a systematic review and meta-analysis. Acta Odontol Scand 2021; 79:9-18. [PMID: 32401121 DOI: 10.1080/00016357.2020.1761031] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVES The aim of this study was to explore the possible association between diabetes mellitus and dental implant complications. MATERIAL AND METHODS A systematic literature review was conducted to answer the following PICO (Participants, Intervention, Comparison, and Outcome) question: Is there association between diabetes mellitus and dental implant complications? Two independent searchers performed a literature search of the PubMed/MEDLINE, Web of Science, Cochrane Library and EMBASE databases for studies published until February 2020, focussing on studies including continuous outcomes, marginal bone loss (primary outcome), probing depth, and bleeding upon probing (secondary outcomes). RESULTS AND CONCLUSIONS A final total of 10 published studies were included in this systematic review. There were statistically significant differences between the groups with regard to marginal bone loss (p < .00001), probing depth (p < .00001) and bleeding around dental implants (p < .00001), and subjects without diabetes had lower complication rates. Additionally, in the subgroup analysis performed with loading time and HbA1c levels, a more evident association was found in immediate loading for probing depth. Moreover, the analysis results of bleeding around dental implants suggested that as HbA1c level increases, the bleeding of the tissues surrounding the implant will also increase. With regard to dental implant complications, there were statistically significant differences favouring patients without diabetes mellitus.
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Affiliation(s)
- Xue Jiang
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun, Jilin, P.R. China
| | - Yanlin Zhu
- Department of Dental Implantology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin, P.R. China
| | - Zhaoying Liu
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun, Jilin, P.R. China
| | - Zilu Tian
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun, Jilin, P.R. China
| | - Song Zhu
- Department of Prosthodontics, School and Hospital of Stomatology, Jilin University, Changchun, Jilin, P.R. China
- Department of Prosthodontics, Hospital of stomatology, Jilin University, Changchun, Jilin, P.R. China
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Murakami H, Igarashi K, Fuse M, Kitagawa T, Igarashi M, Uchibori S, Komine C, Gotouda H, Okada H, Kawai Y. Risk factors for abutment and implant fracture after loading. J Oral Sci 2020; 63:92-97. [PMID: 33311012 DOI: 10.2334/josnusd.20-0443] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
PURPOSE Implant component fractures are one of the most serious complications in implant treatment. With a better understanding of the risk factors for fracture in the preoperative, surgery, superstructure, and post-loading phases of implant treatment, low-risk treatment could reduce implant component fractures, leading to a better prognosis. The aim of this study was to clarify the risk factors for abutment and implant fractures that occur after loading, and to perform a retrospective, approximately 10-year follow-up study to explore the risk factors in each treatment phase. METHODS Subjects were fitted with an implant prosthesis between January 2008 and December 2009. In total, 1,126 Ankylos implants in 430 patients were included for analysis. Binary logistic regression analysis was performed to extract factors related to non-fracture and fracture of the abutment or implant as a dependent variable. RESULTS Gender (OR = 3.466, 95% CI 1.296-9.268, P = 0.013), gonial angle (OR = 3.420, 95% CI 1.308-8.945, P = 0.012), and splinting status of the superstructure (OR = 4.456, 95% CI 1.861-10.669, P = 0.001) were identified as significant risk factors. CONCLUSION The risk of fracture is increased in males, especially those with a mandibular angle of less than 120° on panoramic radiographs, and those with a non-splinted superstructure.
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Affiliation(s)
- Hiroshi Murakami
- Department of Fixed Prosthodontics and Oral Implantology, Nihon University School of Dentistry at Matsudo
| | - Kentaro Igarashi
- Department of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo
| | - Megumi Fuse
- Liberal Arts (Chemistry), Nihon University School of Dentistry at Matsudo
| | - Tsuyoshi Kitagawa
- Department of Fixed Prosthodontics and Oral Implantology, Nihon University School of Dentistry at Matsudo
| | - Mitsuhiko Igarashi
- Department of Histology, Nihon University School of Dentistry at Matsudo
| | - Satoshi Uchibori
- Department of Fixed Prosthodontics and Oral Implantology, Nihon University School of Dentistry at Matsudo
| | - Chiaki Komine
- Department of Oral Health Science, Division of Laboratory Medicine for Dentistry, Nihon University School of Dentistry at Matsudo
| | - Hiroya Gotouda
- Department of Community Oral Health, Nihon University School of Dentistry at Matsudo
| | - Hiroyuki Okada
- Department of Histology, Nihon University School of Dentistry at Matsudo
| | - Yasuhiko Kawai
- Department of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo
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Tallarico M, Baldini N, Gatti F, Martinolli M, Xhanari E, Meloni SM, Gabriele C, Immacolata LA. Role of New Hydrophilic Surfaces on Early Success Rate and Implant Stability: 1-Year Post-loading Results of a Multicenter, Split-Mouth, Randomized Controlled Trial. Eur J Dent 2020; 15:1-7. [PMID: 33242915 PMCID: PMC7902108 DOI: 10.1055/s-0040-1713952] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE To compare early implant failure and implant stability of one-stage Hiossen ET III implants with its new hydrophilic (NH) surface, compared with Hiossen ET III implants with the sandblasted and acid-etched (SA) surface at 1-year follow-up. MATERIALS AND METHODS This study was designed as a split-mouth, multicenter randomized controlled trial aimed to compare SA surface implants (SA group) and NH surface, (NH group). Outcomes were implant and prosthetic survival rates, complications, the insertion torque at implant placement, and implant stability quotient (ISQ) values. RESULTS Twenty-nine patients (mean age 59.9 ± 11.3 years) were treated and followed up to 1 year after loading. No patient dropped out. Fifty-eight implants (29 SA group and 29 NH group) were placed. No implants or prostheses failed and no complications were experienced during follow-up. The mean insertion torque was 40.5 ± 3.23 (38.17-41.83) Ncm in the SA group and 40.48 ± 3.49 (38.02-41.98) Ncm in the NH group (p = 0.981). There was a statistically significant difference at the second week (T2) with higher values in the NH group (p = 0.041). Similar results were found in the maxilla (p = 0.045), but not in the mandible (p = 0.362). A positive correlation was found between initial insertion torque and ISQ with higher value in the NH group (0.73 vs. 0.66). CONCLUSIONS NH implants are a viable alternative to SA surface, as they seem to avoid the ISQ drop during the bone remodeling phase.
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Affiliation(s)
| | - Nicola Baldini
- Department of Periodontics and Implantology, University of Siena, Siena, Italy
| | - Fulvio Gatti
- Department of Biomedical, Surgical and Dental Sciences, Unit of Oral Surgery, San Carlo and San Paolo Hospital, University of Milan, Milan, Italy
| | | | - Erta Xhanari
- School of Dentistry, University of Sassari, Sassari, Italy
| | - Silvio Mario Meloni
- Medical Surgical and Experimental Science Department, University of Sassari, Sassari, Italy
| | - Cervino Gabriele
- Department of BIOMORF, School of Dentistry, University of Messina, Messina, Italy
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Andre A, Ogle OE. Vertical and Horizontal Augmentation of Deficient Maxilla and Mandible for Implant Placement. Dent Clin North Am 2020; 65:103-123. [PMID: 33213705 DOI: 10.1016/j.cden.2020.09.009] [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] [Indexed: 11/30/2022]
Abstract
Ridge augmentation for implant procedures has been shown to be highly successful. There are several techniques available to the dentist, but they require some degree of surgical expertise and experience. No particular technique has been shown to be superior. This article presents the indications, techniques, and complications of the various procedures for alveolar ridge augmentation. This information will educate the general dental practitioner of the techniques available and provide information on the surgical procedures that could be used to discuss with patients when they are being referred to a specialist.
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Affiliation(s)
- Amanda Andre
- The Brooklyn Hospital Center, 121 Dekalb Avenue, Brooklyn, NY 11201, USA.
| | - Orrett E Ogle
- Mona Dental Program, Faculty of Medicine, Univ. of the West Indies, Kingston 6, Jamaica; Oral and Maxillofacial Surgery, Woodhull Hospital, Brooklyn, NY 11206, USA
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Malgaj T, Plut A, Eberlinc A, Drevenšek M, Jevnikar P. Anterior Esthetic Rehabilitation of an Alveolar Cleft Using Novel Minimally Invasive Prosthodontic Techniques: A Case Report. Cleft Palate Craniofac J 2020; 58:912-918. [PMID: 33063533 DOI: 10.1177/1055665620964709] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Missing lateral incisors are the most frequent dental disorder associated with cleft alveolus. When orthodontic closure of the edentulous space is not possible, more aggressive prosthodontic treatments are required. Contemporary resin-bonded fixed dental prostheses (RBFDPs) represent a promising, time-efficient alternative treatment with fewer biological complications. This clinical report proposes a modified approach to the esthetic rehabilitation of a patient with a complete unilateral cleft lip and palate on the left side and an incomplete cleft lip and alveolar cleft on the right side. Digital diagnostics, treatment planning, and clinical procedures involved in the fabrication of facially bonded RBFDPs are presented. This modified technique enables the concurrent replacement of lateral incisors and correction of the malformed central incisors as well as increasing the retention of the restorations.
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Affiliation(s)
- Tine Malgaj
- Department of Prosthodontics, 37664Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Alja Plut
- Department of Orthodontics and Dentofacial Orthopaedics, 37667University Medical Centre Ljubljana, Slovenia
| | - Andreja Eberlinc
- Department of Maxillofacial and Oral Surgery, 37667University Medical Centre Ljubljana, Slovenia
| | - Martina Drevenšek
- Department of Orthodontics and Dentofacial Orthopaedics, 37667University Medical Centre Ljubljana, Slovenia.,Department of Orthodontics and Dentofacial Orthopaedics, 37664Faculty of Medicine, University of Ljubljana, Slovenia
| | - Peter Jevnikar
- Department of Prosthodontics, 37664Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.,Department of Prosthodontics, 37667University Medical Centre Ljubljana, Slovenia
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40
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Brandão TB, Vechiato-Filho AJ, Vedovato E, Silva LS, Dos Santos Silva AR, Brito E Dias R, de Souza Batista VE. Is the Fixed Mandibular 3-Implant Retained Prosthesis Safe and Predicable for Full-Arch Mandibular Prostheses? A Systematic Review. J Prosthodont 2020; 30:119-127. [PMID: 32893938 DOI: 10.1111/jopr.13253] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2020] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To evaluate implant and prosthetic survival rates of full-arch rehabilitations retained by three implants in patients with edentulous mandibles. MATERIALS AND METHODS This systematic review was developed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. The focused question was: Are fixed mandibular 3-implant retained prostheses safe and predicable for full-arch mandibular prostheses? The Medline/PubMed and Cochrane Library databases were used to conduct the systematic search for clinical trials on fixed mandibular 3-implant retained prostheses published between 1999 and 2020. Only English-language studies that presented information on implant and prosthetic survival were included. RESULTS A total of 302 studies were identified, of which 13 addressed the inclusion criteria. Additionally, 574 participants were included in these studies. As reported, 73 (4.57%) of 1596 implants failed, with a survival rate of 95.43%. In addition, the mean survival rate of the presented prostheses was 89.66%. The mean marginal bone loss was 1.09 mm. CONCLUSION Within the limitations of the present review, implant and prosthetic survival rates of fixed mandibular 3-implant retained prostheses were similar to those of full-arch mandibular prostheses retained by four or more implants. Further research exploring the topic is necessary.
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Affiliation(s)
- Thais Bianca Brandão
- Dental Oncology Service, Instituto do Câncer do Estado de São Paulo (ICESP), Sao Paulo, Sao Paulo, Brazil
| | | | - Eurípedes Vedovato
- Associação Paulista de Cirurgiões-Dentistas (APCD), Sao Paulo, Sao Paulo, Brazil
| | - Lorena Scaioni Silva
- Department Prosthodontics, Presidente Prudente Dental School, University of Western São Paulo (UNOESTE), Presidente Prudente, São Paulo, Brazil
| | - Alan Roger Dos Santos Silva
- Oral Diagnosis Department, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, Sao Paulo, Brazil
| | - Reinaldo Brito E Dias
- Surgery, Prostheses and Maxillofacial Traumatology, Dental School of the University of São Paulo (FOUSP), Sao Paulo, Sao Paulo, Brazil
| | - Victor Eduardo de Souza Batista
- Department Prosthodontics, Presidente Prudente Dental School, University of Western São Paulo (UNOESTE), Presidente Prudente, São Paulo, Brazil
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Stuani VT, Kim DM, Nagai M, Chen CY, Sant'Ana ACP. Effectiveness and surface changes of different decontamination protocols at smooth and minimally rough titanium surfaces. J Periodontol 2020; 92:704-715. [PMID: 32946119 DOI: 10.1002/jper.20-0324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 08/27/2020] [Accepted: 09/10/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND The objective of this study is to evaluate titanium decontamination after different protocols while assessing changes in surface roughness, chemical composition, and wettability. METHODS Ninety-six smooth (S) and 96 minimally rough (R) titanium microimplants were used. Pristine microimplants were reserved for negative control (S-nC/R-nC, n = 9), while the remaining microimplants were incubated in Escherichia coli culture. Non-decontaminated microimplants were used as positive control (S-pC/R-pC, n = 3). The other microimplants were divided into seven different decontamination protocols (12 S/R per group): 24% EDTA, 2% chlorhexidine (CHL), gauze soaked in 2% chlorhexidine (GCHL), gauze soaked in ultrapure water (GMQ), scaling (SC), titanium brush (TiB), and implantoplasty (IP). Contaminated areas were assessed by scanning electron microscope images, chemical composition by energy dispersive X-ray spectroscopy, wettability by meniscus technique, and roughness by an optical profiler. RESULTS Higher residual bacteria were observed in R-pC compared with S-pC (P <0.0001). When comparing S and R with their respective pC groups, the best results were obtained with GCHL, SC, TiB, and IP, with no difference between these protocols (P >0.05). Changes in surface roughness were observed after all treatments, with S/R-IP presenting the smoother and a less hydrophilic surface (P <0.05). Apart from IP protocol, all the other groups presented a more hydrophilic surface in R than in S microimplants (P <0.003). All decontamination protocols resulted in a lower percentage of superficial Ti when compared with S/R-nC (P <0.002). CONCLUSIONS All decontamination protocols resulted in changes in roughness, wettability, and chemical composition, but GCHL, SC, TiB, an IP presented the best decontamination outcomes.
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Affiliation(s)
- Vitor T Stuani
- Department of Periodontology, Bauru School of Dentistry-University of Sao Paulo, Bauru, SP, Brazil.,Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - David M Kim
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Masazumi Nagai
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Chia-Yu Chen
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Adriana C P Sant'Ana
- Department of Periodontology, Bauru School of Dentistry-University of Sao Paulo, Bauru, SP, Brazil
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Guarnieri R, Savio L, Bermonds A, Testarelli L. Implants with a Laser-microgrooved Collar Placed in Grafted Posterior Maxillary Extraction Sockets and in Crestally Grafted Sinuses: a 5-Year Multicentre Retrospective Study. J Oral Maxillofac Res 2020; 11:e2. [PMID: 33598110 PMCID: PMC7875103 DOI: 10.5037/jomr.2020.11402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/16/2020] [Indexed: 11/16/2022]
Abstract
Objectives The aim of this retrospective multicentre cohort study was to compare clinical outcomes, soft tissues conditions and differences in marginal bone loss between implants with a laser-microgrooved collar placed in posterior maxillary extraction sockets grafted by 4 to 5 months, and in posterior maxillary pristine bone (spontaneously healed posterior maxillary extraction sockets) by means of osteotome-mediated sinus floor elevation, over a period of 5 years after functional loading. Material and Methods Patients of Group 1 underwent extractions with sockets preservation using porcine-derived bone, covered with collagen membrane. Group 2 underwent extractions without socket preservation. Patients of Group 1 received implants in grafted sites, and Group 2 received implants in spontaneously healed bone using a maxillary sinus lift with crestal approach. Results Over the observation period, the overall clinical success rate in Group 1 and Group 2 was 98% and 100%, respectively, with no differences between the procedures and implants used. Cumulative radiographic marginal bone loss ranged from 0.03 to 0.39 mm after 60 months of functional loading. There were no statistically significant differences in marginal bone loss between short and standard-length implants placed in grafted extraction sockets and in pristine bone. Conclusions Short and standard implants with a laser-microgrooved collar, placed in posterior maxillary extraction sockets grafted by 4 to 5 months, and in posterior maxillary pristine bone (spontaneously healed posterior maxillary extraction sockets) by means of osteotome-mediated sinus floor elevation, exhibited no statistical difference in success rate, clinical parameters and marginal bone loss.
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Affiliation(s)
- Renzo Guarnieri
- Department of Dental and Maxillofacial Sciences, School of Dentistry, University "La Sapienza", RomeItaly.,Private practice, TorinoItaly
| | | | | | - Luca Testarelli
- Department of Dental and Maxillofacial Sciences, School of Dentistry, University "La Sapienza", RomeItaly.,Department of Dental and Maxillofacial Sciences, School of Dentistry, University "La Sapienza", RomeItaly
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In vitro performance and fracture resistance of interim conventional or CAD-CAM implant-supported screw- or cement-retained anterior fixed partial dentures. J Prosthet Dent 2020; 126:575-580. [PMID: 32962835 DOI: 10.1016/j.prosdent.2020.08.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 08/05/2020] [Accepted: 08/05/2020] [Indexed: 11/21/2022]
Abstract
STATEMENT OF PROBLEM Interim restorations represent an essential clinical treatment step; however, limited information is available concerning the performance of computer-aided design and computer-aided manufacturing (CAD-CAM) interim materials. PURPOSE The purpose of this in vitro study was to evaluate the performance and fracture load of resin anterior implant-supported interim fixed partial dentures (IFPDs). MATERIAL AND METHODS Identical anterior resin IFPDs (maxillary central incisor to canine; n=16 per material) were milled from polymethylmethacrylate (PMMA) or di-methacrylate (DMA) systems with different filler content. The IFPD groups were split to simulate a chairside (cemented implant-supported prosthesis) or laboratory procedure (screw-retained implant-supported prosthesis). A cartridge DMA material served as a control. After interim cementation, combined thermocycling and mechanical loading (TCML) was performed on all restorations to approximate a maximum of 2.5 years of clinical function. Behavior during TCML and fracture force was determined, and failures were analyzed. The data were statistically investigated (Kolmogorov-Smirnov test, 1-way-ANOVA; post hoc Bonferroni, Kaplan-Meier survival, α=.05). RESULTS Drop out during TCML varied between no failures and complete failure during loading. For most systems, failure occurred between 120 000 and 600 000 mechanical loading cycles. For IFPDs without a screw channel fracture, values varied between 644 ±263 N and 987 ±101 N. Those with a screw channel fracture failed between 493 ±89 N and 951 ±248 N. Individual IFPDs had significantly higher mean fracture loads (P<.002), but the mean fracture values between IFPDs with and without a screw channel were not significantly different (P>.137). Failures were characterized by fracture of the connector (n=53) followed by mixed failures (n=22) or fractures at the abutment (n=21). CONCLUSIONS These interim materials are sufficiently fracture resistant for the fabrication of implant-supported anterior IFPDs and are expected to survive between 6 months and 2 years before failure. The stability of IFPDs depended on the type of material but not on the restoration design (with or without a screw channel).
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Zacher J, Bauer R, Hanie Krifka S, Rosentritt M. In vitro performance and fracture resistance of pressed or CAD/CAM milled ceramic implant-supported screw-retained or cemented anterior FDPs. J Prosthodont Res 2020; 65:208-212. [PMID: 32938865 DOI: 10.2186/jpr.jpor_2019_403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE This study investigated the in-vitro performance of anterior implant-supported fixed dental prostheses (FDP). The effect of ceramics, fabrication, finalization and the presence of a screw-channel wa s investigated. METHODS Identical anterior ceramic FDPs (tooth 11-13; n=80) were milled (Lithiumdisilicate (LiSiCAD, emaxCAD, Ivoclar-Vivadent), Lithiumaluminiumsilicate (LiAlSi, experimental material) or pressed (Lithiumdisilicate (LiSiPress, emaxPress, Ivoclar-Vivadent), Lithiumsilicate (ZLS, CeltraPress, Dentsply Sirona). FDP-groups (n=8 per material and group) simulated a cemented or screw-retained approach. After cementation or screwing on titanium abutments, thermal cycling and mechanical loading (TCML) was performed on all restorations to mimic 5-year clinical performance. Performance and fracture force were determined and failures were analyzed. STATISTICS (Kolmogorov-Smirnov-test, one-way-ANOVA; post-hoc-Bonferroni, multivariate-regression, α=0.05). RESULTS All FDPs survived TCML without aging, cracks, fractures or chipping. For FDPs without screw channel fracture values varied between with 839.8±112.3N (LiAlSi glazed) and 1485.9±232.6N (LiSiCAD). With screw channel, fracture results varied between 701.4±220.1N (LiALSi glazed) and 1516.3±253.7N (LiSipress). The type of material had a significant influence on the fracture results (LiSi>ZLS>LiAlSi; p≤0.012). Fabrication and finalization had no influence on the results. A screw channel did not significantly (p≥0.135) reduce the fracture force of the FDPs. Type of failure was mostly characterized by a fracture of the connector (LiSi, LiAlSi) or the abutment (ZLS, LiAlSi). CONCLUSIONS FDPs survived TCML without failures indicating that the in vitro performance was not influenced by the tested parameters. Composition of ceramic material has significant influence on the fracture resistance of implant supported LiSi based FDPs. Screw channel, fabrication or finalization did not weaken the FDPs.
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Affiliation(s)
- Julian Zacher
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg
| | - Robert Bauer
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg
| | - Step Hanie Krifka
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg
| | - Martin Rosentritt
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg
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Camps-Font O, González-Barnadas A, Mir-Mari J, Figueiredo R, Gay-Escoda C, Valmaseda-Castellón E. Fracture resistance after implantoplasty in three implant-abutment connection designs. Med Oral Patol Oral Cir Bucal 2020; 25:e691-e699. [PMID: 32683385 PMCID: PMC7473443 DOI: 10.4317/medoral.23700] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 06/04/2020] [Indexed: 11/10/2022] Open
Abstract
Background To assess the effect of implantoplasty and implant-abutment design on the fracture resistance and macroscopic morphology of narrow-diameter (3.5 mm) dental implants.
Material and Methods Screw-shaped titanium dental implants (n = 48) were studied in vitro. Three groups (n = 16) were established, based on implant-abutment connection type: external hexagon, internal hexagon and conical. Eight implants from each group were subjected to an implantoplasty procedure; the remaining 8 implants served as controls. Implant wall thickness was recorded. All samples were subjected to a static strength test.
Results The mean wall thickness reductions varied between 106.46 and 153.75 µm. The mean fracture strengths for the control and test groups were, respectively, 1211.90±89.95 N and 873.11±92.37 N in the external hexagon implants; 918.41±97.19 N and 661.29±58.03 N in the internal hexagon implants; and 1058.67±114.05 N and 747.32±90.05 N in the conical connection implants. Implant wall thickness and fracture resistance (P < 0.001) showed a positive correlation. Fracture strength was influenced by both implantoplasty (P < 0.001) and connection type (P < 0.001).
Conclusions Implantoplasty in diameter-reduced implants decreases implant wall thickness and fracture resistance, and varies depending on the implant-abutment connection. Internal hexagon and conical connection implants seem to be more prone to fracture after implantoplasty. Key words:Dental implants, narrow diameter, implant connection, peri-implantitis, implantoplasty, fracture strength.
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Pons R, Nart J, Valles C, Salvi GE, Monje A. Self-administered proximal implant-supported hygiene measures and the association to peri-implant conditions. J Periodontol 2020; 92:389-399. [PMID: 32761897 DOI: 10.1002/jper.20-0193] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/16/2020] [Accepted: 07/10/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Dental plaque biofilm is considered to be the underlying cause of peri-implant diseases. Moreover, it has been corroborated recently the association between the presence of these diseases and deficiently designed implant-supported prostheses. In this regard, professional-administered oral hygiene measures have been suggested to play a dominant role in prevention. METHODS A cross-sectional study was conducted in dental implant patients according to accessibility for self-performed oral hygiene using a 0.5 mm interproximal brush. Periodontal and peri-implant status were assessed based on clinical and radiographic variables to determine the prevalence of peri-implant diseases. In addition, the participants completed a questionnaire on the efficiency and accessibility for self-performed proximal hygiene. Associations of descriptive data were analyzed using the chi-squared test and Mann-Whitney U-test. Correlations of the variables with the primary outcome (accessibility) were assessed by means of generalized estimation equations and multilevel logistic regression models. RESULTS Based on an a priori power calculation, a total of 50 patients (171 implants) were consecutively recruited. From these, 46% of the prostheses allowed proper access for performing proximal hygiene whereas 54% of the prostheses precluded proper access. Poor access for proximal hygiene displayed tendency towards statistical significance with peri-implant disease (OR = 2.31; P = 0.090), in particular with peri-implant mucositis (OR = 2.43; P = 0.082) when compared to good access. In addition, an association was observed to increased levels of mucosal redness (P = 0.026) and the full-mouth bleeding score (P = 0.018). On the other hand, the presence of peri-implant disease was related to self-reported assessment of oral hygiene measures (P = 0.015) and to patient perception of gingival/mucosal bleeding when performing oral hygiene (P = 0.026). In turn, the diagnosis of peri-implant disease was significantly associated to the quantity and quality of information provided at the time of implant therapy (P = 0.004), including the influence of confounders upon disease occurrence (P = 0.038) CONCLUSIONS: To a certain extent, accessibility for self-performed proximal hygiene is associated to the peri-implant condition. On the other hand, the information received by the patient from the dental professional is essential for self-monitoring of the peri-implant conditions and for alerting to the possible presence of disorders.
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Affiliation(s)
- Ramón Pons
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - José Nart
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Cristina Valles
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Giovanni E Salvi
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Alberto Monje
- Department of Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain
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Lee JH, Jeong SN. Efficacy of deep convolutional neural network algorithm for the identification and classification of dental implant systems, using panoramic and periapical radiographs: A pilot study. Medicine (Baltimore) 2020; 99:e20787. [PMID: 32590758 PMCID: PMC7328970 DOI: 10.1097/md.0000000000020787] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Convolutional neural networks (CNNs), a particular type of deep learning architecture, are positioned to become one of the most transformative technologies for medical applications. The aim of the current study was to evaluate the efficacy of deep CNN algorithm for the identification and classification of dental implant systems.A total of 5390 panoramic and 5380 periapical radiographic images from 3 types of dental implant systems, with similar shape and internal conical connection, were randomly divided into training and validation dataset (80%) and a test dataset (20%). We performed image preprocessing and transfer learning techniques, based on fine-tuned and pre-trained deep CNN architecture (GoogLeNet Inception-v3). The test dataset was used to assess the accuracy, sensitivity, specificity, receiver operating characteristic curve, area under the receiver operating characteristic curve (AUC), and confusion matrix compared between deep CNN and periodontal specialist.We found that the deep CNN architecture (AUC = 0.971, 95% confidence interval 0.963-0.978) and board-certified periodontist (AUC = 0.925, 95% confidence interval 0.913-0.935) showed reliable classification accuracies.This study demonstrated that deep CNN architecture is useful for the identification and classification of dental implant systems using panoramic and periapical radiographic images.
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Picciolo G, Pallio G, Altavilla D, Vaccaro M, Oteri G, Irrera N, Squadrito F. β-Caryophyllene Reduces the Inflammatory Phenotype of Periodontal Cells by Targeting CB2 Receptors. Biomedicines 2020; 8:biomedicines8060164. [PMID: 32560286 PMCID: PMC7344807 DOI: 10.3390/biomedicines8060164] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/14/2020] [Accepted: 06/15/2020] [Indexed: 12/20/2022] Open
Abstract
Human gingival fibroblasts (GF) and human oral mucosa epithelial cells (EC) with an inflammatory phenotype represent a valuable experimental paradigm to explore the curative activity of agents to be used in oral mucositis. The role of cannabinoid receptor 2 (CB2) has not yet been investigated in oral mucositis. The aim of this study was to evaluate the therapeutic potential of β-Caryophyllene (BCP), a CB2 agonist, in an in vitro model of oral mucositis. GF and EC were stimulated with LPS (2 µg/mL) alone or in combination with BCP; a group of LPS challenged GF and EC were treated with BCP and AM630, a CB2 antagonist. LPS increased the inflammatory cytokines TNF-α, IL-1β, IL-6 and IL-17A whereas it decreased the anti-inflammatory cytokine IL-13. The upstream signals were identified in an augmented expression of NF-κB and STAT-3 and in reduced mRNA levels of PPARγ and PGC-1α. BCP blunted the LPS-induced inflammatory phenotype and this effect was reverted by the CB2 antagonist AM630. These results suggest that CB2 receptors are an interesting target to develop innovative strategies for oral mucositis and point out that BCP exerts a marked curative effect in a preclinical model of oral mucositis which deserves to be confirmed in a clinical setting.
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Affiliation(s)
- Giacomo Picciolo
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, Via C. Valeria, 98125 Messina, Italy; (G.P.); (D.A.); (G.O.)
| | - Giovanni Pallio
- Department of Clinical and Experimental Medicine, University of Messina, Via C. Valeria, 98125 Messina, Italy; (G.P.); (M.V.); (N.I.)
| | - Domenica Altavilla
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, Via C. Valeria, 98125 Messina, Italy; (G.P.); (D.A.); (G.O.)
| | - Mario Vaccaro
- Department of Clinical and Experimental Medicine, University of Messina, Via C. Valeria, 98125 Messina, Italy; (G.P.); (M.V.); (N.I.)
| | - Giacomo Oteri
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, Via C. Valeria, 98125 Messina, Italy; (G.P.); (D.A.); (G.O.)
| | - Natasha Irrera
- Department of Clinical and Experimental Medicine, University of Messina, Via C. Valeria, 98125 Messina, Italy; (G.P.); (M.V.); (N.I.)
| | - Francesco Squadrito
- Department of Clinical and Experimental Medicine, University of Messina, Via C. Valeria, 98125 Messina, Italy; (G.P.); (M.V.); (N.I.)
- SunNutraPharma, Academic Spin-Off Company of the University of Messina, Via C. Valeria, 98125 Messina, Italy
- Correspondence: ; Tel.: +39-0902213648
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Zacher J, Bauer R, Strasser T, Rosentritt M. Laboratory performance and fracture resistance of CAD/CAM implant-supported tooth-coloured anterior FDPs. J Dent 2020; 96:103326. [PMID: 32201200 DOI: 10.1016/j.jdent.2020.103326] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 03/05/2020] [Accepted: 03/18/2020] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVES This study investigated the in-vitro performance and fracture force of anterior implant-supported tooth-coloured fixed dental prosthesis (FDPs). Different material types with varying flexural strength and modulus of elasticity were compared with screw-retained or bonded application. MATERIALS AND METHODS Identical anterior FDPs (tooth 11-13; n = 80) from materials (flexural strength 240-1150 MPa, modulus 7.6-210 GPa; 1x lithiumdisilicate ceramic, 2x zirconia (4Y-TZP, 5Y-FSZ), 3x resin-based composites (with different flexural strength and modulus)) were milled. FDPs were grouped into chairside (bonded) and labside (screw-retained) procedure. To simulate a 5-year clinical application, thermal cycling with mechanical loading (TCML) was accomplished. TCML-performance and fracture force were evaluated and failure patterns were analysed. Data were statistically investigated (Kolmogorov-Smirnov-test, one-way-ANOVA; post-hoc-Bonferroni, α = 0.05). RESULTS TCML did not lead to any cracks, fractures or chipping on all tested FDPs. Fracture values varied between 1208.9 ± 354.6 N (experimental resin-based composite) and 2094.3 ± 293.4 N (4Y-TZP) for FDPs without screw channel. With screw channel the results ranged between 1297.9 ± 268.3 N (5Y-FSZ) and 2129.3 ± 321.7 N (4Y-TZP). The influence of the screw channel was not significant for all materials (p ≥ 0.218). Modulus of elasticity and flexural strength had influence on the fracture force only in the individual material groups. Fractures at the connector were predominant for ceramic and zirconia. Resin-based composites primarily showed radial fractures in abutment region or mixed failure types. FDPs with/without screw-channel showed comparable types of failure. CONCLUSIONS TCML did not lead to drop-outs or failures for all FDPs. Individual materials showed no different in-vitro performance, but varying fracture force after TCML. Independent from material, screw channels did not weaken the FDPs. All tested systems showed sufficient properties for an anterior implant application.
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Affiliation(s)
- Julian Zacher
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93042, Regensburg, Germany.
| | - Robert Bauer
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93042, Regensburg, Germany
| | - Thomas Strasser
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93042, Regensburg, Germany
| | - Martin Rosentritt
- Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93042, Regensburg, Germany
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50
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Petrie CS, Nakatani B, Scott JM, Moniz J, Walker MP. A survey of US dental schools on predoctoral implant curricula with emphasis on diagnosing and treating implant complications. J Prosthet Dent 2020; 125:126-136. [PMID: 32063384 DOI: 10.1016/j.prosdent.2019.12.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 12/13/2019] [Accepted: 12/16/2019] [Indexed: 10/25/2022]
Abstract
STATEMENT OF PROBLEM Implant complications have been reported to occur at high rates and frequencies. Whether these high rates are observed in predoctoral implant programs and whether future dentists are educated to diagnose and treat implant complications is unknown. PURPOSE The purpose of this study was to analyze and report the results of a survey on US predoctoral curricula related to implant treatment and with an emphasis on diagnosing and treating implant complications. MATERIAL AND METHODS A 26-question survey was distributed to all (66) US dental schools. In addition to 3 questions regarding descriptive information about each school, 13 questions were used to calculate a curriculum composite score that was used to assess the quality of the school's implant curriculum. The remaining survey topics and number of questions included frequency of complications (2), tracking and types of complications (6), and school-reported student preparedness to identify or treat implant complications (2). A Kruskal-Wallis test was used to evaluate the relationship between the curriculum composite scores and student preparedness to diagnose and treat implant complications. RESULTS Twenty-eight schools responded to the survey for a response rate of 42.4%, and 23 schools completed the entire survey (completion rate 34.8%). Fifteen schools (65.2%) reported methods of recording implant complications, and 8 of 23 schools (34.8%) reported methods of assessing student knowledge in recognizing implant complications. Only 2 schools reported methods of assessing student preparedness to treat implant complications. Most implant complications were mechanical (64.3%), followed by biological (28.6%) and esthetic (7.1%). The prostheses associated with the most complications were implant overdentures (39.1%), followed by single crowns (34.8%) and fixed partial dentures (4.3%). A positive relational trend was observed between reported student preparedness to recognize and treat implant complications and curriculum composite scores. CONCLUSIONS Within the limitation of this survey-based study, implant curricula in US dental schools should consider improving the scope of teaching the diagnosis and treatment of implant complications. The implant complications observed at US dental schools showed similar trends to those reported in the literature.
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Affiliation(s)
- Cynthia S Petrie
- Chair, Department of Restorative Clinical Sciences, Dr. George Tanaka Hawaii Professor of Restorative Dentistry, University of Missouri-Kansas City School of Dentistry, Kansas City, Mo.
| | - Bryson Nakatani
- Summer Scholar Program Participant, University of Missouri-Kansas City School of Dentistry, Kansas City, Mo
| | - JoAnna M Scott
- Assistant Professor, Biostatistician, Research and Graduate Programs, University of Missouri-Kansas City School of Dentistry, Kansas City, Mo
| | - Jessica Moniz
- Research Assistant, Research and Graduate Programs, University of Missouri-Kansas City School of Dentistry, Kansas City, Mo
| | - Mary P Walker
- Professor and Associate Dean for Research and Graduate Programs, University of Missouri-Kansas City School of Dentistry, Kansas City, Mo
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