1
|
Peixoto RF, Tonin BSH, Pinto-Fiamengui LMS, Freitas-Pontes KM, Regis RR, Mattos MDGCD. Analysis of implant-supported cantilever fixed partial denture: An in vitro comparative study on vertical misfit, stress distribution, and cantilever fracture strength. J Prosthodont 2024; 33:584-592. [PMID: 37470305 DOI: 10.1111/jopr.13739] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 06/23/2023] [Accepted: 07/14/2023] [Indexed: 07/21/2023] Open
Abstract
PURPOSE To evaluate the vertical misfit, stress distribution around dental implants, and cantilever fracture strength of 3-unit implant-supported cantilever fixed partial dentures (FPDs) using frameworks made from different materials and manufacturing techniques. MATERIALS AND METHODS Forty FPDs were fabricated and divided into 5 groups (n = 8) based on the framework material used: LAS Co-Cr (Conventional casting-laser welding); TIG Co-Cr (Conventional casting -TIG welding); OP Co-Cr (Conventional casting-one-piece); CAD Co-Cr (CAD-CAM); and CAD Zr (CAD-CAM ZrO2). The vertical misfit was evaluated before porcelain application (T1) and before (T2), and after thermomechanical cycling (T3) by stereomicroscopy. Cantilever fracture strength was tested with a 50 kN (5000 kgf) load cell at a crosshead speed of 0.5 mm/min. Qualitative and quantitative photoelastic analysis was performed to evaluate stress distribution at seven specific points in five FPDs (n = 1/group) subjected to occlusal loading. RESULTS Only the molar showed interaction among the three factors (G × S × T; F(20.932) = 1.630; p = 0.044). Thermomechanical cycling (T2 vs. T3) had a significant effect on intra-group vertical misfit in molar, especially in LAS Co-Cr (Δ = 5.87; p = 0.018) and OP Co-Cr (Δ = 5.39; p = 0.007), with no significant effect in premolar (p > 0.05). Ceramic application combined with thermomechanical cycling (T1 vs. T3) caused a significant intra-group increase in vertical misfit in all groups, both in the molar and premolar (p < 0.05). OP Co-Cr was associated with greater vertical misfit and stress concentration. Frameworks manufactured by the CAD-CAM system exhibited lower vertical misfit and better stress distribution. FPDs with metal frameworks (>410.83 ± 72.26 N) showed significantly higher fracture strength (p < 0.05) than zirconia (277.47 ± 39.10 N), and the first signs of ceramic veneering fracture were observed around 900 N. CONCLUSIONS FPDs with frameworks manufactured using a CAD-CAM system appear to be associated with lower vertical misfit and better stress distribution, although the section of the frameworks followed by welding may be a viable alternative. In addition, metal frameworks exhibit high fracture strength.
Collapse
Affiliation(s)
- Raniel Fernandes Peixoto
- Department of Restorative Dentistry, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (FFOE/UFC), Fortaleza, Ceará, Brazil
| | - Bruna Santos Honório Tonin
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo (FORP/USP), Ribeirão Preto, São Paulo, Brazil
| | - Lívia Maria Sales Pinto-Fiamengui
- Department of Restorative Dentistry, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (FFOE/UFC), Fortaleza, Ceará, Brazil
| | - Karina Mattes Freitas-Pontes
- Department of Restorative Dentistry, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (FFOE/UFC), Fortaleza, Ceará, Brazil
| | - Rômulo Rocha Regis
- Department of Restorative Dentistry, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará (FFOE/UFC), Fortaleza, Ceará, Brazil
| | - Maria da Glória Chiarello de Mattos
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo (FORP/USP), Ribeirão Preto, São Paulo, Brazil
| |
Collapse
|
2
|
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.
Collapse
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.
| |
Collapse
|
3
|
Nie Q, Li C, Yang J, Yao Y, Sun H, Jiang T, Grzegorzek M, Chen A, Chen H, Hu W, Li R, Zhang J, Wang D. OII-DS: A benchmark Oral Implant Image Dataset for object detection and image classification evaluation. Comput Biol Med 2023; 167:107620. [PMID: 37922604 DOI: 10.1016/j.compbiomed.2023.107620] [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: 07/27/2023] [Revised: 10/06/2023] [Accepted: 10/23/2023] [Indexed: 11/07/2023]
Abstract
In recent years, there is been a growing reliance on image analysis methods to bolster dentistry practices, such as image classification, segmentation and object detection. However, the availability of related benchmark datasets remains limited. Hence, we spent six years to prepare and test a bench Oral Implant Image Dataset (OII-DS) to support the work in this research domain. OII-DS is a benchmark oral image dataset consisting of 3834 oral CT imaging images and 15240 oral implant images. It serves the purpose of object detection and image classification. To demonstrate the validity of the OII-DS, for each function, the most representative algorithms and metrics are selected for testing and evaluation. For object detection, five object detection algorithms are adopted to test and four evaluation criteria are used to assess the detection of each of the five objects. Additionally, mean average precision serves as the evaluation metric for multi-objective detection. For image classification, 13 classifiers are used for testing and evaluating each of the five categories by meeting four evaluation criteria. Experimental results affirm the high quality of our data in OII-DS, rendering it suitable for evaluating object detection and image classification methods. Furthermore, OII-DS is openly available at the URL for non-commercial purpose: https://doi.org/10.6084/m9.figshare.22608790.
Collapse
Affiliation(s)
- Qianqing Nie
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China; Key Laboratory of Intelligent Computing in Medical Image, Ministry of Education, Northeastern University, Shenyang, Liaoning, China
| | - Chen Li
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China; Key Laboratory of Intelligent Computing in Medical Image, Ministry of Education, Northeastern University, Shenyang, Liaoning, China.
| | - Jinzhu Yang
- Key Laboratory of Intelligent Computing in Medical Image, Ministry of Education, Northeastern University, Shenyang, Liaoning, China
| | - Yudong Yao
- Department of Electrical and Computer Engineering, Stevens Institute of Technology, USA
| | - Hongzan Sun
- Shengjing Hospital, China Medical University, Shenyang, China
| | - Tao Jiang
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China; International Joint Institute of Robotics and Intelligent Systems, Chengdu University of Information Technology, Chengdu, China
| | - Marcin Grzegorzek
- Institute of Medical Informatics, University of Luebeck, Luebeck, Germany; Department of Knowledge Engineering, University of Economics in Katowice, Katowice, Poland
| | - Ao Chen
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Haoyuan Chen
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Weiming Hu
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Rui Li
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Jiawei Zhang
- Microscopic Image and Medical Image Analysis Group, College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Danning Wang
- Center of Implant Dentistry, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, China.
| |
Collapse
|
4
|
Galve-Huertas A, Zilleruelo-Pozo MJ, García-González S, Ortíz-Puigpelat O, Hernández-Alfaro F, Aboul-Hosn Centenero S. Clinical Evidence on a Novel Macrohybrid Design Dental Implant with 12° Angled Platform: A Systematic Review. MATERIALS 2022; 15:ma15145011. [PMID: 35888482 PMCID: PMC9322499 DOI: 10.3390/ma15145011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/10/2022] [Accepted: 07/12/2022] [Indexed: 11/24/2022]
Abstract
Background: Immediate implant placement with immediate esthetics has become a more common procedure over time, though ensuring good emergence of the axis of the implant has been a challenge. A novel macroimplant design with an angled platform (Co-Axis®) has been developed to ensure exit of the head of the implant in the correct prosthetic position. A systematic literature review was carried to determine the survival rate and marginal bone loss associated with these implants. Material and Methods: An electronic and manual literature search was made in accordance with the PRISMA statement. The search strategy was limited to human studies, retrospective and prospective clinical trials, cross-sectional studies, and cohort studies reporting outcomes of a novel macrohybrid implant with a 12° angled implant connection. Results: Three articles met the inclusion criteria and were reviewed in the analysis. The estimated success rate was 95.9%. The global marginal bone loss was estimated to be −0.17 ± 0.58 mm in an environment characterized by great heterogeneity (I2 = 99%). The estimated mean implant stability was 69.6 ± 0.92 (ISQ). As only two studies provided the required information, it was not possible to determine publication bias. Lastly, mean recession was estimated to be practically zero (0.06 ± 0.23 mm), with great heterogeneity. Conclusions: Within the limitations of this systematic review, it can be affirmed that immediate implant treatment with Co-Axis® implants shows a survival rate of 95.9% at one year of follow-up, with low marginal bone loss values, near-zero soft tissue recession, and favorable papilla index values. Nevertheless, the great heterogeneity of the data requires the findings to be interpreted with caution.
Collapse
Affiliation(s)
- Andrea Galve-Huertas
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, 08017 Barcelona, Spain; (M.J.Z.-P.); (S.G.-G.); (O.O.-P.); (F.H.-A.); (S.A.-H.C.)
- Correspondence:
| | - Maria José Zilleruelo-Pozo
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, 08017 Barcelona, Spain; (M.J.Z.-P.); (S.G.-G.); (O.O.-P.); (F.H.-A.); (S.A.-H.C.)
| | - Susana García-González
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, 08017 Barcelona, Spain; (M.J.Z.-P.); (S.G.-G.); (O.O.-P.); (F.H.-A.); (S.A.-H.C.)
| | - Octavi Ortíz-Puigpelat
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, 08017 Barcelona, Spain; (M.J.Z.-P.); (S.G.-G.); (O.O.-P.); (F.H.-A.); (S.A.-H.C.)
| | - Federico Hernández-Alfaro
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, 08017 Barcelona, Spain; (M.J.Z.-P.); (S.G.-G.); (O.O.-P.); (F.H.-A.); (S.A.-H.C.)
| | - Samir Aboul-Hosn Centenero
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, 08017 Barcelona, Spain; (M.J.Z.-P.); (S.G.-G.); (O.O.-P.); (F.H.-A.); (S.A.-H.C.)
- Staff Member of the Oral and Maxillofacial Surgery Department, Hospital Clinic de Barcelona, 08036 Barcelona, Spain
| |
Collapse
|
5
|
Liu H, Tang Y, Zhang S, Liu H, Wang Z, Li Y, Wang X, Ren L, Yang K, Qin L. Anti-infection mechanism of a novel dental implant made of titanium-copper (TiCu) alloy and its mechanism associated with oral microbiology. Bioact Mater 2022; 8:381-395. [PMID: 34541408 PMCID: PMC8429474 DOI: 10.1016/j.bioactmat.2021.05.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/19/2021] [Accepted: 05/30/2021] [Indexed: 12/13/2022] Open
Abstract
This work was focused on study of anti-infection ability and its underlying mechanism of a novel dental implant made of titanium-copper (TiCu) alloy. In general, most studies on antibacterial implants have used a single pathogen to test their anti-infection ability using infectious animal models. However, dental implant-associated infections are polymicrobial diseases. We innovatively combine the classic ligature model in dogs with sucrose-rich diets to induce oral infections via the canine native oral bacteria. The anti-infection ability, biocompatibility and underlying mechanism of TiCu implant were systematically investigated in comparison with pure Ti implant via general inspection, hematology, imageology (micro-CT), microbiology (16S rDNA and metagenome), histology, and Cu ion detections. Compared with Ti implant, TiCu implant demonstrated remarkable anti-infection potentials with excellent biocompatibility. Additionally, the underlying anti-infection mechanism of TiCu implant was considered to involve maintaining the oral microbiota homeostasis. It was found that the carbohydrates in the plaques formed on the surface of TiCu implant were metabolized through the tricarboxylic acid cycle (TCA) cycles, which prevented the formation of an acidic microenvironment and inhibited the accumulation of acidogens and pathogens, thereby maintaining the microflora balance between aerobic and anaerobic bacteria.
Collapse
Affiliation(s)
- Hui Liu
- School of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, China
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Yulong Tang
- Department of Stomatology, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, 110016, China
| | - Shuyuan Zhang
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Huan Liu
- School of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, China
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Zijian Wang
- Department of Stomatology, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, 110016, China
| | - Yue Li
- Department of Stomatology, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, 110016, China
| | - Xinluan Wang
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518057, China
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| | - Ling Ren
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Ke Yang
- Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Ling Qin
- Translational Medicine R&D Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518057, China
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health, The Chinese University of Hong Kong, Hong Kong Special Administrative Region of China
| |
Collapse
|
6
|
Nørgaard Petersen F, Jensen SS, Dahl M. Implant treatment after traumatic tooth loss: A systematic review. Dent Traumatol 2022; 38:105-116. [PMID: 34997947 DOI: 10.1111/edt.12730] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND/AIMS Treatment after traumatic tooth loss is challenging and is currently guided by expert opinion and the individual patient situation. The aim of this study was to provide an overview on the outcome of dental implant treatment in the anterior maxilla after traumatic tooth loss, based on a systematic review of the existing evidence. MATERIALS AND METHODS A systematic search of the literature was performed on PubMed, Cochran Library and Web of Science following the PRISMA guidelines based on a structured research question (PICO). All clinical studies of five patients or more with follow-up of at least 1 year after implant loading were included. Patients were at least 18 years of age. Cohen's Kappa-coefficient was calculated. The Newcastle-Ottawa Scale was applied to assess the quality of the included studies. Descriptive statistical methods were applied. RESULTS Nine hundred and ninety-nine articles were identified through the systematic search. Finally, six articles were eligible for inclusion. The studies comprised prospective and retrospective cohort studies and case series. From these, 96 patients with 120 implants were included. The age ranged from 18 to 59 years. The survival rates of implants and superstructures were 97% and 95%, respectively, after a mean follow-up of 3.5 years. Mean marginal bone resorption was 0.56 mm (range 0.21-1.30 mm). Complication rates were 7% and 11% on implant and superstructure level, respectively. Patient-reported outcome measures and objective evaluations showed a high level of satisfaction with the aesthetic outcome. Bone augmentation was performed in 60 implant sites. Three patients underwent pre-surgical orthodontic treatment. The maxillary central incisor was the most frequently replaced tooth (70%). CONCLUSIONS This systematic review revealed a low level of evidence on the outcome of dental implant treatment after traumatic tooth loss. Systematic reporting of treatment outcomes of tooth replacements after dental trauma is highly encouraged to further guide dentists for the benefit of these challenging patients.
Collapse
Affiliation(s)
- Frej Nørgaard Petersen
- Department of Oral and Maxillofacial Surgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Simon Storgård Jensen
- Department of Oral and Maxillofacial Surgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Research Area: Oral Surgery, Section for Oral Biology and Immunopathology, Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Morten Dahl
- Department of Oral and Maxillofacial Surgery, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| |
Collapse
|
7
|
Effect of materials on axial displacement and internal discrepancy of cement-retained implant-supported prostheses. J Prosthet Dent 2020; 127:462-469. [PMID: 33309295 DOI: 10.1016/j.prosdent.2020.08.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/29/2020] [Accepted: 08/31/2020] [Indexed: 11/21/2022]
Abstract
STATEMENT OF PROBLEM How axial displacement may be affected by the mechanical properties and internal discrepancy of a cement-retained implant-supported prosthesis is unclear. PURPOSE The purpose of this in vitro study was to assess the difference in internal discrepancy and axial displacement according to the prosthesis material in cement-retained prostheses splinting nonparallel implants. MATERIAL AND METHODS Computer-aided design and computer-aided manufacture (CAD-CAM) titanium abutments were fabricated for a vertically placed implant and a 15-degree tilted implant. Three types of prostheses, in zirconia, cobalt-chromium (Co-Cr) alloy, and polymethylmethacrylate resin (PMMA), were fabricated (n=10). The internal discrepancy between the CAD-CAM titanium abutment and the prosthesis was measured by using the replica technique. After luting with an interim cement, they were mounted in Type IV gypsum. The specimens were cyclic loaded, and axial displacement of the prosthesis was measured after 3, 10, 100, and 106 cycles. The internal discrepancy and cumulative axial displacement were assessed by using a 3-way analysis of variance and repeated measures analysis of variance (α=.05). RESULTS The internal discrepancy of the prosthesis did not differ based on the prosthesis material (P=.869); however, it was significantly different based on the measurement location, with the occlusal discrepancy (224 ±29 μm) being greater than the axial discrepancy (21 ±10 μm) (P<.05). Implants with an angled placement exhibited less axial displacement than implants with vertical placement (P<.05). The PMMA prosthesis demonstrated significantly greater axial displacement than the zirconia or Co-Cr prostheses (P<.05), which were similar (P=.623). CONCLUSIONS Prostheses made with high-elastic moduli materials exhibited less axial displacement than PMMA prostheses, even though the internal discrepancy was not different. Moreover, vertically placed implants presented a greater axial displacement of the prosthesis than implants with angled placement.
Collapse
|
8
|
Pan YH, Lin HK, Lin JCY, Hsu YS, Wu YF, Salamanca E, Chang WJ. Evaluation of the Peri-Implant Bone Level around Platform-Switched Dental Implants: A Retrospective 3-Year Radiographic Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E2570. [PMID: 31323848 PMCID: PMC6678778 DOI: 10.3390/ijerph16142570] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/05/2019] [Accepted: 07/15/2019] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To describe remodeling of the mesial and distal marginal bone level around platform-switched (PS) and platform-matched (PM) dental implants that were sandblasted with large grit and etched with acid over a three-year period. MATERIALS AND METHODS Digital periapical radiographs were obtained at the following time-points: during Stage I of the surgical placement of dental implants, before loading, immediately after loading (baseline), and one, three, six, 12, and 36 months after loading for measuring the horizontal and vertical marginal bone levels. RESULTS Sixty implants were successfully osseointegrated during the overall observation period. Vertical marginal bone levels for the PS and PM dental implants were 0.78 ± 0.77 and 0.98 ± 0.81 mm, respectively, whereas the horizontal marginal bone levels for the PS and PM implants were 0.84 ± 0.45 and 0.98 ± 0.68 mm, respectively. During the time leading up to the procedure until 36 months after the procedure, the average vertical marginal bone level resulted in less bone loss for the PS and PM groups-0.96 ± 1.28 and 0.30 ± 1.15 mm, respectively (p < 0.05). The mean levels of the horizontal marginal bone also showed increases of 0.48 ± 1.01 mm in the PS and 0.37 ± 0.77 mm in the PM groups from the time before loading until 36 months after the procedure. However, these increases were not statistically significant (p > 0.05). CONCLUSION PS dental implants appeared to be more effective than PM implants for minimizing the mean marginal vertical and horizontal marginal bone loss during the three-year period. Regardless of which abutment connection was used, the dental implant in the present retrospective investigation exhibited minimal marginal bone remodeling, thus indicating long-term stability.
Collapse
Affiliation(s)
- Yu Hwa Pan
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
- Department of Dentistry, Chang Gung Memorial Hospital, Taipei 10488, Taiwan
- Graduate Institute of Dental & Craniofacial Science, Chang Gung University, Taoyuan 33343, Taiwan
- School of Dentistry, College of Medicine, China Medical University, Taichung 40150, Taiwan
| | - His Kuei Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
- Dental Department, Taipei Medical University, Shuang-Ho Hospital, New Taipei City 23557, Taiwan
| | - Jerry C-Y Lin
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA 02115, USA
| | - Yung-Szu Hsu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
| | - Yi-Fan Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan
| | - Eisner Salamanca
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan.
| | - Wei-Jen Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 10692, Taiwan.
- Dental Department, Taipei Medical University, Shuang-Ho Hospital, New Taipei City 23557, Taiwan.
| |
Collapse
|
9
|
Storelli S, Del Fabbro M, Scanferla M, Palandrani G, Romeo E. Implant supported cantilevered fixed dental rehabilitations in partially edentulous patients: Systematic review of the literature. Part I. Clin Oral Implants Res 2019; 29 Suppl 18:253-274. [PMID: 30306681 DOI: 10.1111/clr.13311] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To investigate in which clinical situations a cantilever fixed implant supported restorations can be a treatment alternative and which complications are reported. MATERIALS AND METHODS Two operators screened the literature (MEDLINE, EMBASE) and performed a hand search on the main journals dealing with implantology and prosthetics until 31 December 2017. Only articles that considered cantilever implant fixed restorations with at least 10 patients and with a mean follow-up of at least 5 year were selected. The outcome variables were survival of implants and prosthesis, mechanical, technical and biological complications, marginal bone loss. The review was performed according to the PRISMA statements. Risk of bias assessment was evaluated. Failure and complication rates were analysed using random effect Poisson regression models to obtain summary estimate of 5- and 10-year survival and complication rates. RESULTS A total of nine papers were selected for partially edentulous patients and reported high survival rate of the prosthesis. The estimated survival rate for 5-10 years was calculated to be 98.4% for the implants and 99.2% for the rehabilitations. Mechanical, technical and biological complications were reported with a cumulative 5-10 years complication rate of 28.66% and 26.57% for the patients and for the prosthesis, respectively. Two papers for single implant supporting 2-unit cantilever were not sufficient to draw conclusions. CONCLUSIONS There is evidence that cantilever can be successful treatment in partially edentulous patients. In two adjacent edentulous sites, data are not yet sufficient.
Collapse
Affiliation(s)
- Stefano Storelli
- Department of Biomedical, Surgical and Dental Sciences, Clinica Odontoiatrica ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Massimo Del Fabbro
- Department of Biomedical, Surgical and Dental Sciences, IRCCS Orthopedic Institute Galeazzi, University of Milan, Milan, Italy
| | - Massimo Scanferla
- Department of Biomedical, Surgical and Dental Sciences, Clinica Odontoiatrica ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Giulia Palandrani
- Department of Biomedical, Surgical and Dental Sciences, Clinica Odontoiatrica ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| | - Eugenio Romeo
- Department of Biomedical, Surgical and Dental Sciences, Clinica Odontoiatrica ASST Santi Paolo e Carlo, University of Milan, Milan, Italy
| |
Collapse
|
10
|
Storelli S, Del Fabbro M, Scanferla M, Palandrani G, Romeo E. Implant-supported cantilevered fixed dental rehabilitations in fully edentulous patients: Systematic review of the literature. Part II. Clin Oral Implants Res 2018; 29 Suppl 18:275-294. [DOI: 10.1111/clr.13310] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2018] [Indexed: 11/27/2022]
Affiliation(s)
- Stefano Storelli
- Department of Biomedical; Surgical and Dental Sciences; Clinica Odontoiatrica ASST Santi Paolo e Carlo; University of Milan; Milan Italy
| | - Massimo Del Fabbro
- Department of Biomedical; Surgical and Dental Sciences; IRCCS Orthopedic Institute Galeazzi; University of Milan; Milan Italy
| | - Massimo Scanferla
- Department of Biomedical; Surgical and Dental Sciences; Clinica Odontoiatrica ASST Santi Paolo e Carlo; University of Milan; Milan Italy
| | - Giulia Palandrani
- Department of Biomedical; Surgical and Dental Sciences; Clinica Odontoiatrica ASST Santi Paolo e Carlo; University of Milan; Milan Italy
| | - Eugenio Romeo
- Department of Biomedical; Surgical and Dental Sciences; Clinica Odontoiatrica ASST Santi Paolo e Carlo; University of Milan; Milan Italy
| |
Collapse
|
11
|
Al-Dharrab A. Three-year Prospective Evaluation of Immediately Loaded Mandibular Implant Overdentures retained with Locator Attachments. J Contemp Dent Pract 2017; 18:842-850. [PMID: 28874652 DOI: 10.5005/jp-journals-10024-2137] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Immediate implant-loading protocol has progressed because of various clinical advantages offered by this treatment approach. However, available studies on edentulous patients are still few compared to those in which delayed implant-loading protocol was applied. AIM This prospective study was to evaluate the implant survival rate and the peri-implant tissue response in a group of patients who received two unsplinted immediately loaded dental implants in the mandibular anterior region to retain a complete overdenture using locator attachments. MATERIALS AND METHODS A total of 24 edentulous patients with a mean age of 63.4 years were involved in this study following certain inclusion criteria. All patients received a new set of complete dentures before implant positioning. Two Prima Connex tapered implants were put in the interforaminal area of the mandible with a flapless surgical procedure, and the prefabricated dentures were immediately retained with a zest locator attachment. Clinical and radiographic records of the patients were reviewed immediately after placement of the implant, at 3 months, and at 1, 2, and 3 years following fixture installation. The obtained data were analyzed using paired samples t-test and the Wilcoxon signed-rank test at 0.05 significance level. RESULTS At 3 years, all implants had osseointegrated with a 100% survival rate. In addition, the total mean marginal bone change was -0.89 ± 0.14 mm, and the mean periotest value was -7.631 ± 0.921. CONCLUSION Results of this study propose that immediate loading of mandibular implant overdentures that are retained with locator attachments was a feasible treatment alternative for this particular group of patients. CLINICAL SIGNIFICANCE Immediate implant- loading of mandibular implant overdentures that are retained with locator attachments is a reliable treatment option Keywords: Immediate implant loading, Implant survival rate, Locator attachments, Overdenture.
Collapse
Affiliation(s)
- Ayman Al-Dharrab
- Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia, Phone: +96626403316, e-mail:
| |
Collapse
|
12
|
Park JH, Kim YS, Ryu JJ, Shin SW, Lee JY. Cumulative survival rate and associated risk factors of Implantium implants: A 10-year retrospective clinical study. J Adv Prosthodont 2017; 9:195-199. [PMID: 28680551 PMCID: PMC5483406 DOI: 10.4047/jap.2017.9.3.195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 02/09/2017] [Accepted: 03/21/2017] [Indexed: 11/12/2022] Open
Abstract
PURPOSE The objective of this study was to determine the cumulative survival rate (CSR) and associated risk factors of Implantium implants by retrospective clinical study. MATERIALS AND METHODS Patients who received Implantium implants (Dentium Co., Seoul, Korea) at Korea University Guro Hospital from 2004 to 2011 were included. The period between the first surgery and the last hospital visit until December 2015 was set as the observation period for this study. Clinical and radiographic data were collected from patient records, including all complications observed during the follow-up period. Kaplan-Meier analysis was performed to examine CSR. Multiple Cox proportional hazard model was employed to assess the associations between potential risk factors and CSR. RESULTS A total of 370 implants were placed in 121 patients (mean age, 56.1 years; range, 19 to 75 years). Of the 370 implants, 13 failed, including 7 implants that were lost before loading. The 10-year cumulative survival rate of implants was 94.8%. The multiple Cox proportional hazard model revealed that significant risk factor of implant failure were smoking and maxillary implant (P<.05). CONCLUSION The 10-year CSR of Implantium implants was 94.8%. Risk factors of implant failure were smoking and maxillary implant.
Collapse
Affiliation(s)
- Jin-Hong Park
- Department of Prosthodontics, Institute for Clinical Dental Research, Korea University Medical Center, Korea University, Seoul, Republic of Korea
| | - Young-Soo Kim
- Department of Preventive Dentistry, Institute for Clinical Dental Research, Korea University Medical Center, Korea University, Seoul, Republic of Korea
| | - Jae-Jun Ryu
- Department of Prosthodontics, Institute for Clinical Dental Research, Korea University Medical Center, Korea University, Seoul, Republic of Korea
| | - Sang-Wan Shin
- Department of Prosthodontics, Institute for Clinical Dental Research, Korea University Medical Center, Korea University, Seoul, Republic of Korea
| | - Jeong-Yol Lee
- Department of Prosthodontics, Institute for Clinical Dental Research, Korea University Medical Center, Korea University, Seoul, Republic of Korea
| |
Collapse
|
13
|
Abstract
The oral handicap of complete edentulism is the terminal outcome of a multifactorial process involving biological factors and patient-related factors. Fully edentulous orally handicapped older adults have been neglected because removable acrylic dentures have been the classic therapy for complete edentulism but are only rehabilitative, not therapeutic. Not replacing missing teeth with stable dentures could prevent adequate food intake. Osseointegrated endosseous implants used as a therapeutic adjunct can reduce the problem of long-term bone resorption to less than 0.1 mm per year. Implant-borne prostheses substantially increase the overall health and quality of life of orally handicapped fully edentulous older adults.
Collapse
Affiliation(s)
- Charles Zahedi
- Department of Periodontics, University of California, Los Angeles (UCLA), Implant Mentoring/Implant Outreach Institute, 4221 MacArthur Blvd, Newport Beach, CA 92660, USA.
| |
Collapse
|
14
|
Lee JH, Park JH, Park CJ, Cho LR. Technique to retrieve implant abutment fragments. J Prosthet Dent 2015; 114:486-9. [DOI: 10.1016/j.prosdent.2014.04.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 04/22/2014] [Accepted: 04/22/2014] [Indexed: 10/23/2022]
|
15
|
Sousa V, Mardas N, Farias B, Petrie A, Needleman I, Spratt D, Donos N. A systematic review of implant outcomes in treated periodontitis patients. Clin Oral Implants Res 2015; 27:787-844. [DOI: 10.1111/clr.12684] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2015] [Indexed: 11/26/2022]
Affiliation(s)
- Vanessa Sousa
- Department of Clinical Research; Periodontology Unit; UCL Eastman Dental Institute; London UK
| | - Nikos Mardas
- Centre for Adult Oral Health, Periodontology Unit; QMUL Bart's and The London School of Dentistry and Hospital; London UK
| | - Bruna Farias
- Federal University of Pernambuco; Recife-Pernambuco Brazil
| | - Aviva Petrie
- Biostatistics Unit; UCL Eastman Dental Institute; London UK
| | - Ian Needleman
- Department of Clinical Research; Periodontology Unit; UCL Eastman Dental Institute; London UK
- International Centre for Evidence-Based Oral Health; UCL Eastman Dental Institute; London UK
| | - David Spratt
- Department of Microbial Diseases; UCL Eastman Dental Institute; London UK
| | - Nikolaos Donos
- Department of Clinical Research; Periodontology Unit; UCL Eastman Dental Institute; London UK
| |
Collapse
|
16
|
Gómez-de Diego R, Mang-de la Rosa MDR, Romero-Pérez MJ, Cutando-Soriano A, López-Valverde-Centeno A. Indications and contraindications of dental implants in medically compromised patients: update. Med Oral Patol Oral Cir Bucal 2014; 19:e483-9. [PMID: 24608222 PMCID: PMC4192572 DOI: 10.4317/medoral.19565] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 09/20/2013] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to review the current scientific literature in order to analyse the indications and contraindications of dental implants in medically compromised patients. A reference research was carried out on PubMed using the key words “implant” AND (oral OR dental) AND (systemic disease OR medically compromised), in articles published between 1993 and 2013. The inclusion criteria were the following: clinical studies in which, at least, 10 patients were treated, consensus articles, reviewed articles and meta-analysis performed in humans treated with dental implants, and which included the disease diagnosis. A total of 64 articles were found, from which 16 met the inclusion criteria.
Cardiac systemic diseases, diabetic endocrine pathologies or controlled metabolic disorders do not seem to be a total or partial contraindication to the placement of dental implants. Tobacco addiction, and head and neck radiotherapy are correlated to a higher loss of dental implants. Patients suffering from osteoporosis undergoing biphosphonates therapy show an increased risk of developing bone necrosis after an oral surgery, especially if the drugs are administered intravenously or they are associated to certain concomitant medication.
Key words:Dental implants, medically compromised patient, systemic diseases.
Collapse
Affiliation(s)
- Rafael Gómez-de Diego
- Departamento Cirugía, Universidad de Salamanca, Avda. Alfonso X El Sabio S/N, 37007 Salamanca, Spain,
| | | | | | | | | |
Collapse
|
17
|
López-Martínez F, Gómez Moreno G, Olivares-Ponce P, Eduardo Jaramillo D, Eduardo Maté Sánchez de Val J, Calvo-Guirado JL. Implants failures related to endodontic treatment. An observational retrospective study. Clin Oral Implants Res 2014; 26:992-5. [DOI: 10.1111/clr.12415] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2014] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - David Eduardo Jaramillo
- Faculty of Dentistry; University of Texas Health Science Center Dental Branch; Houston TX USA
| | | | | |
Collapse
|