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Mohammed REH, Askar OM, El-Waseef FA, Fouad MM. Radiographic Assessment of Three-implant-retained Mandibular Overdentures: A Clinical Study of Alveolar Bone Height Changes (Randomized Clinical Trial). J Contemp Dent Pract 2023; 24:847-852. [PMID: 38238271 DOI: 10.5005/jp-journals-10024-3588] [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: 01/23/2024]
Abstract
AIM To evaluate the residual alveolar ridge bone height changes regarding the impact of the block-out spacer used during the pick-up procedures of implant-assisted mandibular complete overdentures. MATERIALS AND METHODS This study was a randomized clinical trial conducted on 18 patients. All patients received three mandibular dental implants with definitive locator attachments which were directly picked up with two different techniques. Patients were classified randomly without any bias into two equal groups (Group I block-out spacer) and (Group II without block-out spacer). Over a year, the digital radiographic technique with new technique of reference points was employed to evaluate the changes in the residual alveolar ridge bone heights. The data were statistically analyzed to test the significance difference between groups. RESULTS Concerning the residual alveolar ridge resorption RRR, group I exhibited a significantly higher RRR than group II. CONCLUSION In terms of residual alveolar ridge preservation, not using the block-out spacer was more beneficial than using it. CLINICAL SIGNIFICANCE Alveolar bone heights can be affected by the use of block-out spacer during pick-up procedure within accepted physiologic values. The removal of the block-out spacer could be more beneficial with respect to the preservation of the residual alveolar ridge. How to cite this article: Mohammed REL, Askar OM, El-Waseef FAE, et al. Radiographic Assessment of Three-implant-retained Mandibular Overdentures: A Clinical Study of Alveolar Bone Height Changes (Randomized Clinical Trial). J Contemp Dent Pract 2023;24(11):847-852.
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Affiliation(s)
- Rahma El Hussany Mohammed
- Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, Phone: +01065779460, e-mail:
| | - Osama Mohammed Askar
- Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Fatma Ahmad El-Waseef
- Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Mohammed Mohammed Fouad
- Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
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Schuster AJ, Possebon APDR, Schinestsck AR, Chagas-Júnior OL, Faot F. Effect of mandibular bone atrophy on maxillary and mandibular bone remodeling and quality of life with an implant-retained mandibular overdenture after 3 years. J Prosthet Dent 2023; 130:220-228. [PMID: 34728072 DOI: 10.1016/j.prosdent.2021.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 10/19/2022]
Abstract
STATEMENT OF PROBLEM The medium-term effect of an implant-retained mandibular overdenture on bone remodeling in the maxilla and posterior mandible of edentulous patients and the effects on quality of life have not been established. PURPOSE The purpose of this prospective observational clinical study was to evaluate the 3-year effects of implant-retained mandibular overdentures on oral-health-related quality of life (OHRQoL) and bone remodeling in different regions of the maxilla and mandible in participants with atrophic or nonatrophic mandibles. MATERIAL AND METHODS Twenty-six edentulous participants received 2 narrow-diameter implants in the anterior mandible. Mandibular bone atrophy was categorized from presurgical panoramic radiographs according to the Cawood and Howell criteria. OHRQoL was assessed by using the OHIP-EDENT questionnaire. Participants were evaluated annually for 3 years to measure the marginal bone loss and bone area of the posterior mandible, and the anterior and posterior regions of the maxilla were assessed annually through panoramic radiographs. The data were analyzed by using a mixed-effects linear regression to estimate time-dependent trends and a mixed-effect linear regression model to verify differences between groups. The Pearson correlation coefficients between bone variables and 3-year OHIP-EDENT outcomes were calculated. RESULTS In the third year, atrophic participants had a significantly lower marginal bone loss (0.02 mm) than nonatrophic participants (-0.39 mm) (P=.030). Differences were also found in the functional limitation (nonatrophic=1.82 ±1.75, atrophic participants=1.92 ±1.54; P=.018) and handicap domains (nonatrophic=0.36 ±0.54, atrophic participants=0.08 ±0.27; P=.003). For nonatrophic participants, comparisons between baseline and 3-year outcomes showed significant bone resorption as indicated by the area ratio in the anterior maxilla (P=.035), posterior maxilla (P=.022), and posterior mandible (P=.009). Conversely, the bone area of the anterior maxilla (P=.019) decreased in atrophic participants between baseline and year 1, while the bone area of the anterior maxilla and posterior mandible increased (P<.001) between years 1 and 3. Higher effect sizes were observed in the OHRQoL domains of the atrophic participants. CONCLUSIONS Bone atrophy influenced both the OHRQoL profile and bone remodeling profile in different regions of the mandible and maxilla in mandibular overdenture users. In atrophic participants, bone tissue in both jaws responded positively to overdenture use, with bone apposition after the first year and bone area preservation in the anterior maxilla, posterior mandible, and peri-implant regions after 3 years of follow-up.
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Affiliation(s)
- Alessandra Julie Schuster
- Postdoctoral Researcher, Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas (UFPel), Pelotas, RS, Brazil
| | - Anna Paula da Rosa Possebon
- PhD student, Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas (UFPel), Pelotas, RS, Brazil
| | | | - Otacílio Luiz Chagas-Júnior
- Professor, Department of Oral and Maxillofacial Surgery and Maxillofacial Prosthodontics, School of Dentistry, Federal University of Pelotas (UFPel), Pelotas, RS, Brazil
| | - Fernanda Faot
- Professor, Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas (UFPel), Pelotas, RS, Brazil.
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Chae SK, Cho WT, Choi JW, Bae EB, Bae JH, Bae GH, Huh JB. Comparison of retentive force and wear pattern of Locator® and ADD-TOC attachments combined with CAD-CAM milled bar. J Adv Prosthodont 2022; 14:12-21. [PMID: 35284053 PMCID: PMC8891684 DOI: 10.4047/jap.2022.14.1.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/21/2021] [Accepted: 01/04/2022] [Indexed: 11/25/2022] Open
Abstract
PURPOSE The purpose of this study was to investigate changes in retention and wear pattern of Locator® and ADD-TOC attachments on a digital milled bar by performing chewing simulation and repeated insertion/removal of prostheses in fully edentulous models. MATERIALS AND METHODS Locator (Locator®; Zest Anchors Inc., Escondido, CA, USA) was selected as the control group and ADD-TOC (ADD-TOC; PNUAdd Co., Ltd., Busan, Republic of Korea) as the experimental group. A CAD-CAM milled bar was mounted on a master model and 3 threaded holes for connecting a bar attachment was formed using a tap. Locator and ADD-TOC attachments were then attached to the milled bar. Simulated mastication and repeated insertion/removal were performed over 400,000 cyclic loadings and 1,080 insertions/removals, respectively. Wear patterns on deformed attachment were investigated by field emission scanning electron microscopy. RESULTS For the ADD-TOC attachments, chewing simulation and repeated insertion/removal resulted in a mean initial retentive force of 24.43 ± 4.89 N, which were significantly lower than that of the Locator attachment, 34.33 ± 8.25 N (P < .05). Amounts of retention loss relative to baseline for the Locator and ADD-TOC attachments were 21.74 ± 7.07 and 8.98 ± 5.76 N (P < .05). CONCLUSION CAD-CAM milled bar with the ADD-TOC attachment had a lower initial retentive force than the Locator attachment. However, the ADD-TOC attachment might be suitable for long-term use as it showed less deformation and had a higher retentive force after simulated mastication and insertion/removal repetitions.
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Affiliation(s)
- Sung-Ki Chae
- Department of Prosthodontics, Dental Research Institute, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
- Research and Development Institute, Samwon D.M.P, Yangsan, Republic of Korea
| | - Won-Tak Cho
- Department of Prosthodontics, Dental Research Institute, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
- Research and Development Institute, PNUAdd Co., Ltd., Busan, Republic of Korea
| | - Jae-Won Choi
- Department of Prosthodontics, Dental Research Institute, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
| | - Eun-Bin Bae
- Department of Prosthodontics, Dental Research Institute, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
| | - Ji-Hyeon Bae
- Department of Prosthodontics, Dental Research Institute, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
- Research and Development Institute, PNUAdd Co., Ltd., Busan, Republic of Korea
| | - Gang-Ho Bae
- Department of Prosthodontics, Dental Research Institute, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
- Research and Development Institute, PNUAdd Co., Ltd., Busan, Republic of Korea
| | - Jung-Bo Huh
- Department of Prosthodontics, Dental Research Institute, Dental and Life Sciences Institute, Education and Research Team for Life Science on Dentistry, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
- Research and Development Institute, PNUAdd Co., Ltd., Busan, Republic of Korea
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Oda Y, Mori G, Sasaki H, Furuya Y, Ito T, Iijima T, Sekine H, Yajima Y. Dimensional changes of buccal bone in the edentulous maxilla with telescopic-retained implant-supported fixed dental prostheses. J Prosthet Dent 2021:S0022-3913(21)00451-0. [PMID: 34688477 DOI: 10.1016/j.prosdent.2021.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 10/20/2022]
Abstract
STATEMENT OF PROBLEM The buccal bone in an edentulous maxilla loses thickness over time because of physiological changes. However, the dimensional changes of the buccal bone in an edentulous maxilla with an implant-supported fixed dental prosthesis are unknown. PURPOSE The purpose of this retrospective clinical study was to evaluate cone beam computed tomography (CBCT) images of the dimensional changes of the buccal bone in edentulous maxillae with complete-arch telescopic-retained implant-supported fixed dental prostheses (CTI-FDPs) after 6 years by using a professional retrieval system. MATERIAL AND METHODS This study included 17 participants with edentulous maxillae who had been provided with CTI-FDP with 121 taper joint implants. A three-dimensional radiographic analysis by using CBCT was performed at implant insertion (0 years) and after 6 years. Vertical and horizontal bone measurement values were evaluated. During horizontal bone thickness measurement, 4 different levels, 0, 2, 4, and 6 mm apical to the implant shoulder, were evaluated as bone value (BV)0mm, BV2mm, BV4mm, and BV6mm, respectively. The BVs were compared with the Wilcoxon signed-rank test and Kruskal-Wallis test (α=.05). In addition, the Spearman rank correlation coefficient was used to identify 0yBV factors that influence the 6yBVs. A nonlinear regression analysis was used to clarify the slopes of 0yBVs and 6yBV0mm. RESULTS Significant decreases in vertical and horizontal BVs were found between 0 years and 6 years (P<.05). However, no significant difference was observed in bone loss at 6 years at any of the vertical and horizontal measurement points (P≥.05). When 0yBVs related to 6yBV0mm were analyzed, 0yBV0mm and 0yBV2mm showed strong correlations with 6yBV0mm (|r|≥.7). In the regression analysis, a 0yBV0mm of 0.58 mm and 0yBV2mm of 0.78 mm could be critical factors associated with a 6yBV0mm of 0 mm. A 6yBV0mm of 0yBV0mm more than 0.58 mm was significantly higher than a 6yBV0mm of 0yBV0mm less than 0.58 mm (P<.001). Moreover, a 6yBV0mm of 0yBV2mm more than 0.78 mm was significantly higher than a 6yBV0mm of 0yBV2mm less than 0.78 mm (P<.001). CONCLUSIONS The buccal bone in an edentulous maxilla with fixed implant-supported prostheses lost significant vertical and horizontal bone thicknesses after 6 years. At implant insertion, both a 0.58-mm buccal bone on the platform and a 0.78-mm buccal bone at 2 mm apical to the implant shoulder are necessary for longer term maintenance of bone on the platform of implants specifically supporting CTI-FDPs.
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Affiliation(s)
- Yukari Oda
- Assistant Professor, Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan.
| | - Gentaro Mori
- Assistant Professor, Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
| | - Hodaka Sasaki
- Associate Professor, Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
| | - Yoshitaka Furuya
- Senior Lecturer, Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
| | - Taichi Ito
- Associate Professor, Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
| | - Toshikazu Iijima
- Clinical Professor, Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
| | - Hideshi Sekine
- Professor, Department of Fixed Prosthodontics, Tokyo Dental College, Tokyo, Japan
| | - Yasutomo Yajima
- Professor, Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
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Km S, Koli DK, Jain V, Pruthi G, Nanda A. Comparison of ridge resorption and patient satisfaction in single implant-supported mandibular overdentures with conventional complete dentures: A randomised pilot study. J Oral Biol Craniofac Res 2020; 11:71-77. [PMID: 33376669 DOI: 10.1016/j.jobcr.2020.11.014] [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: 07/10/2020] [Revised: 11/19/2020] [Accepted: 11/21/2020] [Indexed: 10/22/2022] Open
Abstract
Purpose To compare ridge resorption (RR) and patient satisfaction in single implant-supported mandibular overdentures (SIMO) with conventional complete dentures (CCD) over a period of one year. Material and methods This prospective, randomized trial enrolled 30 completely edentulous participants following inclusion and exclusion criteria. The study was completed by 28 participants. Rehabilitation of 14 participants was done by using SIMO (group I) and CCD (group C) each according to randomization chart. For both the groups, RR was computed in millimeters from residual ridge height measured by using orthopantogram at 6 months (T1), 9 months (T2), and 12 months (T3) at 3 anatomic locations: maxillary posterior (L1), maxillary anterior (L2), and mandibular posterior (L3). Patient satisfaction was evaluated by using Geriatric Oral Health Assessment Index Hindi version (GOHAI-Hi) at 1week and 12 months after denture delivery. Results At 12 months, minimum RR was observed at L2 of group I (0.62 ± 0.20 mm) and maximum RR was observed at L3 of group C (1.04 ± 0.15 mm). Comparison of ridge resorption between group I and group C was statistically significant at T3 (P = .001 for L1, P = .006 for L2, and P = .028 for L3). At T3, in group I, RR was more at L3 than L2 region (P = .011) and L1 region (P = .015). Statistically significant difference of GOHAI-Hi scores was observed between group I and group C at end of 12 months (P = .003). Conclusions SIMO cause less RR and higher patient satisfaction as compared to CCD and can be recommended with higher predictability of success than CCD.
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Affiliation(s)
- Subin Km
- Department of Prosthodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Dheeraj Kumar Koli
- Department of Prosthodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Veena Jain
- Department of Prosthodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Gunjan Pruthi
- Department of Prosthodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Aditi Nanda
- Department of Prosthodontics, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, 110029, India
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"Combination Syndrome" in an Upper/Lower Implant Overdenture Patient: A Clinical Report. IMPLANT DENT 2019; 28:405-410. [PMID: 31135651 DOI: 10.1097/id.0000000000000913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
An upper/lower overdenture case, which presented with clinical entities commonly associated with the combination syndrome, is described. To the author's knowledge, this is the first documented case to illustrate such a particular association. The patient presented with an upper overdenture on 4 individual implants with attachments, without palatal coverage, opposing a lower bar overdenture on 4 implants, delivered more than 10 years before presentation. The patient complained about esthetics (poor display of upper teeth, excessive showing of lower teeth, and occlusal plane cant) and chewing. The anterior maxilla had severe bone loss, whereas the anterior mandible had a large amount of bone. Our retreatment included an upper overdenture with palatal coverage and a lower overdenture, both prostheses supported by individually attached implants. The article describes in detail the reasoning behind chosen retreatment, along with limitations and compromises.
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Alsrouji MS, Ahmad R, Rajali A, Mustafa NWNA, Ibrahim N, Baba NZ. Mandibular Implant-Retained Overdentures: Potential Accelerator of Bone Loss in the Anterior Maxilla? J Prosthodont 2018; 28:131-137. [PMID: 30427557 DOI: 10.1111/jopr.12999] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/26/2018] [Indexed: 11/29/2022] Open
Abstract
PURPOSE To compare the residual ridge resorption (RRR) of the anterior maxillary bone beneath complete dentures when opposed by mandibular complete dentures (CD) and implant-retained overdentures (IRO). MATERIALS AND METHODS 18 patients were rehabilitated with maxillary CD opposing mandibular IRO, and 4 patients were prescribed with conventional CD. Cone beam computed tomography (CBCT) scans of the maxilla were acquired before and 1 year post-treatment and converted into 3D models using Mimics research software. RRR was quantified by measuring the changes in bone volume following superimpositioning and sectioning of these models at the anterior maxillary region. Subsequently, the sectioned 3D models of the anterior maxilla were exported to 3-Matic software to reveal the predominant region and depth of RRR. RESULTS The mean reduction in bone volume of the anterior maxilla in the CD group was 2.60% (SD = 1.71%, range = -4.89 % to -0.92%, median = -2.30%), while the mean reduction in the IRO group was almost three times higher at 7.25% (SD = 3.16%, range = -13.25 to -1.50, median = -7.15%). The predominant areas of RRR were on the buccal and occlusal ridge of the anterior maxilla. CONCLUSION Within the limits of this study, it may be concluded that an IRO caused significantly higher RRR of the anterior maxilla than a CD.
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Affiliation(s)
- Mohamed Samih Alsrouji
- Centre of Restorative Dentistry Studies, Faculty of Dentistry, Universiti Teknologi MARA, Sg. Buloh Campus, Selangor, Malaysia
| | - Rohana Ahmad
- Centre of Restorative Dentistry Studies, Faculty of Dentistry, Universiti Teknologi MARA, Sg. Buloh Campus, Selangor, Malaysia.,Integrative Pharmacogenomics Institute, Universiti Teknologi MARA, Puncak Alam Campus, Selangor, Malaysia
| | - Aiemeeza Rajali
- Centre of Restorative Dentistry Studies, Faculty of Dentistry, Universiti Teknologi MARA, Sg. Buloh Campus, Selangor, Malaysia
| | - Nor Wati Nur Atikah Mustafa
- Centre of Restorative Dentistry Studies, Faculty of Dentistry, Universiti Teknologi MARA, Sg. Buloh Campus, Selangor, Malaysia
| | - Norliza Ibrahim
- Unit of Oral and Maxillofacial Imaging, Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Nadim Z Baba
- Advanced Specialty Education Program in Prosthodontics, Loma Linda University, School of Dentistry, Loma Linda, CA
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Alsrouji MS, Ahmad R, Abdul Razak NH, Shuib S, Kuntjoro W, Baba NZ. Premaxilla Stress Distribution and Bone Resorption Induced by Implant Overdenture and Conventional Denture. J Prosthodont 2018; 28:e764-e770. [PMID: 30044033 DOI: 10.1111/jopr.12954] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2018] [Indexed: 11/29/2022] Open
Abstract
PURPOSE To relate the principal stress, strain, and total deformation in the premaxilla region beneath a complete denture to the pattern of premaxilla bone resorption when opposed by a conventional complete denture (CD) or by a two-implant-retained overdenture (IOD) using finite element analysis (FEA). MATERIALS AND METHODS Three-dimensional solid models of the maxilla, mucosa, and denture of a selected edentulous patient were created using Mimics and CATIA software. The FEA model was created and duplicated in ANSYS 16.0 to perform two simulations for the IOD and the CD models. The values of maximum stress and strain and total deformation were obtained and compared to the outcomes of premaxilla resorption from a parallel clinical study. RESULTS The maximum principal stress in the premaxilla in the IOD model ranged from 0.019 to 0.336 MPa, while it ranged from 0.011 to 0.193 MPa in the CD model. The maximum principal strain in the IOD model was 1.75 times greater than that in the CD model. Total deformation was 1.8 times higher in the IOD model. Greater bone resorption was observed in regions of higher stress, which were on the occlusal and buccal sides of the premaxilla residual ridge. CONCLUSION Stress, strain, and total deformation values present in the premaxilla area beneath a CD were approximately two times greater in a comparison between an opposing mandibular two-IOD and an opposing mandibular CD. The results were consistent with a parallel clinical study in which the rate of premaxilla bone resorption was almost three times greater in the IOD group.
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Affiliation(s)
- Mohamed Samih Alsrouji
- Centre of Restorative Dentistry Studies, Faculty of Dentistry, Universiti Teknologi MARA, Sg. Buloh Campus, Selangor, Malaysia
| | - Rohana Ahmad
- Centre of Restorative Dentistry Studies, Faculty of Dentistry, Universiti Teknologi MARA, Sg. Buloh Campus, Selangor, Malaysia.,Integrative Pharmacogenomics Institute, Universiti Teknologi MARA, Puncak Alam Campus, Selangor, Malaysia
| | - Noor Hayati Abdul Razak
- Oral and Maxillofacial Surgery Unit, School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Solehuddin Shuib
- Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia
| | - Wahyu Kuntjoro
- Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia
| | - Nadim Z Baba
- Advanced Specialty Education Program in Prosthodontics, Loma Linda University, School of Dentistry, Loma Linda, CA
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Khuder T, Yunus N, Sulaiman E, Ibrahim N, Khalid T, Masood M. Association between occlusal force distribution in implant overdenture prostheses and residual ridge resorption. J Oral Rehabil 2017; 44:398-404. [PMID: 28295492 DOI: 10.1111/joor.12504] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2017] [Indexed: 11/29/2022]
Abstract
This study aimed to investigate residual ridge resorption (RRR) of anterior and posterior maxillary and mandibular edentulous ridges, in patients treated with mandibular implant overdentures (IOD) and compare with conventional complete denture (CD) wearers, and to determine at each location, the association of RRR with the occlusal forces distribution and other patients' variables. The anterior and posterior RRR of IOD (six males, 17 females) and CD (12 males, 11 females) groups were determined using baseline and follow-up dental panaromic radiographs (DPT) (mean intervals 4 ± 1·8 years). The bone ratios were calculated using proportional area: anatomic to fixed reference areas and mean difference of ratios between the intervals determined RRR. The ridge locations included anterior and posterior maxillary and posterior mandibular arches. The T-Scan III digital occlusal system was used to record anterior and posterior percentage occlusal force (%OF) distributions. There were significant differences in anterior and posterior %OF between treatment groups. Two-way anova showed RRR was significant for arch locations (P = 0·005), treatment group (IOD versus CD) (P = 0·001), however, no significant interaction (P = 0·799). Multivariate regression analyses showed significant association between RRR and %OF at anterior maxilla (P = 0·000) and posterior mandible (P = 0·023) and for treatment groups at posterior maxilla (P = 0·033) and mandibular areas (P = 0·021). Resorption was observed in IOD compared to CD groups, with 8·5% chance of less resorption in former and 7·8% in the latter location. Depending on arch location, ridge resorption at various locations was associated with occlusal force distribution and/or treatment groups (implant prostheses or conventional complete dentures).
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Affiliation(s)
- T Khuder
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur
| | - N Yunus
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur
| | - E Sulaiman
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur
| | - N Ibrahim
- Department of Oro-Maxillofacial and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - T Khalid
- Department of Restorative Dentistry, School of Dentistry, Cardiff University, Cardiff, UK
| | - M Masood
- Department of Dentistry and Oral Health, La Trobe Rural Health School, La Trobe University, Bendigo, Australia
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Bhat S, Chowdhary R, Mahoorkar S. Comparison of masticatory efficiency, patient satisfaction for single, two, and three implants supported overdenture in the same patient: A pilot study. J Indian Prosthodont Soc 2016; 16:182-6. [PMID: 27141169 PMCID: PMC4837769 DOI: 10.4103/0972-4052.176522] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 11/20/2015] [Indexed: 11/17/2022] Open
Abstract
STATEMENT OF PROBLEM Over 30% of the world population suffers from edentulism. Implant supported overdenture have been a relatively successful treatment option for edentulism and have shown to slowed the rate of residual resorption and maintain the vertical height of the residual. PURPOSE The purpose of this study was to measure patient masticatary efficiency and satisfaction with the mandibular one-, two-, and three-implant-retained overdenture therapy when compared with conventional denture in a the same patients. MATERIALS AND METHODS Ten complete edentulous patients, who were wearing conventional complete dentures, were involved in this study. Three single piece endosseous implant of 3.0 mm in diameter and 13 mm in length were surgically placed in the mandible in the region of B, C, and D. Mandibular denture was connected for single, two, and three implant supported overdenture periodically and checked for masticatory efficiency using a bite gauge and patient satisfaction using a questionnaire. RESULTS Statistical analysis was done using Wilcoxon signed rank test. Four groups of bite forces when compared to each other. Group 1 was compared with Group 2, with the statistical value showing significance. Signed rank test showed no significance (0.268) when Group 2 was compared with Group 3. When Group 3 was compared with Group 4, and Group 1 compared with Group 4, rank test showed significant values. Four groups were compared with each other for patient satisfaction, Group 1 was compared with Group 2, with the statistical value showing no significance. CONCLUSIONS A single midline implant supported overdenture can be considered as a suitable and cost-effective treatment option over conventional denture. The study concludes that masticatory efficiency of this single midline implant supported overdenture is better than the conventional complete denture.
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Affiliation(s)
- Srinidhi Bhat
- Department of Prosthodontics, S. Nijalingappa Institute of Dental Sciences and Research, Gulbarga, Karnataka, India
| | - Ramesh Chowdhary
- Branemark Osseointegration Centre India, Gulbarga, Karnataka, India
| | - Sudhindra Mahoorkar
- Department of Prosthodontics, S. Nijalingappa Institute of Dental Sciences and Research, Gulbarga, Karnataka, India
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11
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Investigation of the implant-supported overdentures in completely edentulous mandibles. J Dent Sci 2015. [DOI: 10.1016/j.jds.2015.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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12
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Elsyad MA. Patient satisfaction and prosthetic aspects with mini-implants retained mandibular overdentures. A 5-year prospective study. Clin Oral Implants Res 2015; 27:926-33. [DOI: 10.1111/clr.12660] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Moustafa Abdou Elsyad
- Department of Removable Prosthodontics; Faculty of Dentistry; University of Mansoura; Eldakahlia Egypt
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13
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Eerdekens L, Schols M, Coelst L, Quirynen M, Naert I. A 5-Year Prospective Study on Cone-Anchored Implants in the Edentulous Maxilla. Clin Implant Dent Relat Res 2015; 17 Suppl 2:e621-32. [DOI: 10.1111/cid.12295] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Liesbeth Eerdekens
- Unit of Prosthetic Dentistry/BIOMAT Research Group; Department of Oral Health Sciences; KU Leuven; Leuven Belgium
| | - Marlies Schols
- Unit of Prosthetic Dentistry/BIOMAT Research Group; Department of Oral Health Sciences; KU Leuven; Leuven Belgium
| | - Ludo Coelst
- Unit of Operative Dentistry; Department of Oral Health Sciences; Faculty of Medicine; KU Leuven; Leuven Belgium
| | - Marc Quirynen
- Unit of Periodontology; Department of Oral Health Sciences; Faculty of Medicine; KU Leuven; Leuven Belgium
| | - Ignace Naert
- Unit of Prosthetic Dentistry/BIOMAT Research Group; Department of Oral Health Sciences; KU Leuven; Leuven Belgium
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14
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Elsyad MA, Ashmawy TM, Faramawy AG. The influence of resilient liner and clip attachments for bar-implant-retained mandibular overdentures on opposing maxillary ridge. A 5-year randomised clinical trial. J Oral Rehabil 2013; 41:69-77. [PMID: 24354686 DOI: 10.1111/joor.12120] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2013] [Indexed: 11/29/2022]
Abstract
This study aimed to compare the influence of resilient liner and clip attachments for bar-implant-retained mandibular overdentures on opposing maxillary ridge after 5 years of denture wearing. Thirty edentulous male patients (mean age 62·5 years) received two implants in the anterior mandible after being allocated into two equal groups using balanced randomisation. After 3 months, implants were connected with resilient bars. New maxillary complete dentures were then constructed, and mandibular overdentures were retained to the bars with either clips (group I, GI) or silicone resilient liners (group II, GII). The prosthetic and soft tissue complications of the maxillary dentures were recorded 6 months (T6 m ), 1 year (T1), 3 years (T3) and 5 years (T5) after overdenture insertion. Traced rotational tomograms were used for measurements of maxillary alveolar bone loss. The proportional value between bone areas and areas of reference not subject to resorption was expressed as a ratio (R). Change in R immediately before (T0) and after 5 years (T5) of overdenture insertion was calculated. Maxillary denture relining times and frequency of flabby anterior maxillary ridge occurred significantly more often in GI compared with GII. The change of R in anterior part of maxilla was significantly higher than change of R in posterior part in both groups. GI showed significant resorption of anterior residual ridge compared with GII. Relining times and frequencies of flabby ridge were significantly correlated with change in R. Within the limitations of this study, resilient liner attachments for bar-implant-retained mandibular overdentures are associated with decreased resorption and flabbiness of maxillary anterior residual ridge and fewer maxillary denture relining times when compared with clip attachments.
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Affiliation(s)
- M A Elsyad
- Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
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15
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An analysis of the implant-supported overdenture in the edentulous mandible. J Oral Rehabil 2012; 40:43-50. [DOI: 10.1111/joor.12010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2012] [Indexed: 12/01/2022]
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16
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Ahmad R, Abu-Hassan MI, Li Q, Swain MV. Three dimensional quantification of mandibular bone remodeling using standard tessellation language registration based superimposition. Clin Oral Implants Res 2012; 24:1273-9. [PMID: 22862429 DOI: 10.1111/j.1600-0501.2012.02566.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2012] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate a new method to quantify longitudinal mandibular bone remodeling three-dimensionally by superimposition of cone beam computed tomography images. MATERIALS AND METHODS This method is used to quantify the treatment effects of implant-retained overdentures in 20 patients aged 52-79 at recruitment after 1 and 2 years post treatment. Three dimensional models of pre- and post-treatment were reconstructed for each patient and superimposed using Standard Tessellation Language registration method and segmentation. RESULTS Color maps of the differences generated by superimposition allow detailed examination and quantification of the progressive dimensional changes of bone in a three-dimensional manner and enable the visualization of the apical displacement and thinning of the cortical layer of bone underneath the denture base. Most of the remodeling changes took place during the first year with a mean decrease in volume of 3.7% (SD = 4.4%; range = +3.7% to -15.9%, median = -3.7%). This remodeling pattern continued during the second year, but at a reduced rate of 2.5% per year (SD = 4.2%; range = +2.1% to -11.3%, median = -3.9%). CONCLUSION Standard Tessellation Language registration based superimposition of cone beam computed tomography images may be considered an objective and reproducible method to three-dimensionally quantify mandibular bone remodeling.
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Affiliation(s)
- Rohana Ahmad
- Unit of Prosthodontics, Faculty of Dentistry, Universiti Teknologi MARA, Shah Alam, Malaysia
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17
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Sülün T, Sakar O, Bilhan H, Ispirgil E. The effect of mandibular anterior teeth on the hypermobile tissue in the anterior part of the maxilla. Arch Gerontol Geriatr 2011; 55:12-5. [PMID: 21669467 DOI: 10.1016/j.archger.2011.05.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 05/08/2011] [Accepted: 05/09/2011] [Indexed: 11/25/2022]
Abstract
The absence of posterior occlusal contacts may result in increased anterior occlusal contacts and forces between natural mandibular dentition and artificial maxillary dentition. The impact of natural mandibular anterior teeth on the development of hypermobile tissues in the anterior part of the edentulous maxillary alveolar ridge was investigated in this study. The study group consisted of 410 patients with maxillary complete dentures and various mandibular dentitions from seven rest homes in Istanbul. The data; including hypermobile tissue in the anterior part of the maxilla, occlusal relationship, nocturnal wear, denture age, and duration of the maxillary full edentulism period were recorded. A chi-square test was performed to analyze the effects of following data: Existence of mandibular anterior teeth, poor adaptation of the dentures, nocturnal wear, types of occlusal contacts, and gender, on the resorption of the anterior part of the maxilla. To examine the effects of the presence of anterior mandibular teeth and early maxillary edentulism on bone resorption in the anterior part of the maxilla, a logistic regression analysis was performed. The results reveal that patients with edentulous maxilla and natural mandibular anterior teeth are approximately twice more likely to show risk of hypermobile tissue in the anterior part of the maxilla than are full edentulous patients. Further, edentulous periods exceeding 30 years in maxilla seem to increase this risk approximately 4 times.
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Affiliation(s)
- Tonguç Sülün
- Istanbul University Faculty of Dentistry, Department of Prosthodontics, 34390 Capa, Istanbul, Turkey.
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18
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TYMSTRA N, RAGHOEBAR GM, VISSINK A, MEIJER HJA. Maxillary anterior and mandibular posterior residual ridge resorption in patients wearing a mandibular implant-retained overdenture. J Oral Rehabil 2010; 38:509-16. [DOI: 10.1111/j.1365-2842.2010.02180.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Slot W, Raghoebar GM, Vissink A, Huddleston Slater JJ, Meijer HJA. A systematic review of implant-supported maxillary overdentures after a mean observation period of at least 1 year. J Clin Periodontol 2010; 37:98-110. [PMID: 19995402 DOI: 10.1111/j.1600-051x.2009.01493.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wim Slot
- Department of Prosthetic Dentistry, Dental School, University Medical Center Groningen, Groningen, The Netherlands.
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20
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Tolstunov L. Management of biomechanical complication of implant-supported restoration of a patient with combination syndrome: a case report. J Oral Maxillofac Surg 2008; 67:178-88. [PMID: 19070766 DOI: 10.1016/j.joms.2008.09.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2007] [Revised: 08/11/2008] [Accepted: 09/05/2008] [Indexed: 12/01/2022]
Abstract
Combination syndrome (CS) is a pathologic condition of the stomatognathic system characterized by an edentulous maxilla with an atrophic anterior ridge, maxillary papillary hyperplasia, hypertrophic maxillary tuberosities, super-erupted mandibular anterior teeth, as well as atrophic mandibular posterior ridges. This condition can present a challenging situation to the clinician who needs to assemble evidence from all aspects of dentistry to formulate an appropriate treatment plan. One of the possible treatment choices for the fully edentulous patient with a CS is a full-arch implant-supported reconstruction for both maxilla and mandible. The purpose of this study is to illustrate and discuss a biomechanical complication-fractured maxillary meso bar in a patient with CS, and to present a description of how this complex case was corrected and successfully completed. The analysis of implant-supported and implant-retained full arch restorations in edentulous patients with CS is presented and treatment recommendations are given. A necessity of individualized approach for every implant reconstruction case, especially complicated with a CS, is suggested.
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Affiliation(s)
- Len Tolstunov
- Department of Oral and Maxillofacial Surgery, University of the Pacific School of Dentistry, San Francisco, CA, USA.
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21
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Eitner S, Schlegel A, Emeka N, Holst S, Will J, Hamel J. Comparing bar and double-crown attachments in implant-retained prosthetic reconstruction: a follow-up investigation. Clin Oral Implants Res 2008; 19:530-7. [DOI: 10.1111/j.1600-0501.2007.01500.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Salvador MCG, do Valle AL, Ribeiro MCM, Pereira JR. Assessment of the prevalence index on signs of combination syndrome in patients treated at Bauru School of Dentistry, University of Sao Paulo. J Appl Oral Sci 2007; 15:9-13. [PMID: 19089092 PMCID: PMC4327203 DOI: 10.1590/s1678-77572007000100003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2004] [Accepted: 08/11/2006] [Indexed: 11/22/2022] Open
Abstract
A group of destructive changes occurring in jaws in patients with maxillary complete dentures and mandibular removable partial dentures (bilaterally) has been described in the literature as the combination syndrome. However, this condition is not clinically observed in all patients. The aim of this study was to establish the prevalence index on signs of combination syndrome and to verify whether these changes also occurred in patients rehabilitated with a mandibular removable partial denture (unilaterally). Sample was composed of 44 patients, completely edentulous in the maxilla. Thirty-two patients had a Kennedy Class I removable partial denture and 12 a Kennedy Class II. Three major alterations were observed in 20.5% of the studied population. Nevertheless, these changes were present only in 25% of patients with Kennedy Class I removable partial denture. Based on the findings of this study, it can be concluded that patients with Kennedy Class II removable partial denture do not have similar signs that lead to the combination syndrome's condition.
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Abstract
Edentulism can be a debilitating handicap. Zarb described endentulous individuals who could not function as 'denture cripples'.(1) Most difficulty with complete denture prostheses arises from the inability to function with the mandibular prostheses. Factors that adversely affect successful use of a complete denture on the mandible include: 1) the mobility of the floor of the mouth, 2) thin mucosa lining the alveolar ridge, 3) reduced support area and 4) the motion of the mandible (Figs 1,2). These factors alone can explain the difficulty of wearing a denture on the mandibular arch compared to the maxillary arch. The maxilla exhibits much less mobility on the borders of the denture than the mandible, moreover having a stable palate with thick fibrous tissues available to support the prostheses and resist occlusal forces. These differences explain most of the reasons why patients experience difficulty with using a complete denture on the mandibular arch compared to the maxillary arch.
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Affiliation(s)
- W Chee
- Restorative Dentistry, Implant Dentistry at the University of Southern California School of Dentistry, Los Angeles, California 90089-0641, USA.
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25
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Pasciuta M, Grossmann Y, Finger IM. A prosthetic solution to restoring the edentulous mandible with limited interarch space using an implant-tissue-supported overdenture: A clinical report. J Prosthet Dent 2005; 93:116-20. [PMID: 15674219 DOI: 10.1016/j.prosdent.2004.09.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
An implant-retained overdenture retained with 2 implants placed in the anterior edentulous mandible is a simple and predictable treatment option. The fabrication and use of this prosthesis requires satisfactory interarch space for adequate denture base thickness and esthetics. This clinical report describes the use of low-profile attachments for this overdenture design to solve the problem of limited interarch space.
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Affiliation(s)
- Marianna Pasciuta
- Department of Prosthodontics, School of Dentistry, Louisiana State University Health Sciences Center, New Orleans, LA 70119, USA.
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26
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Abstract
Although combination syndrome is recognized by many clinicians, documented observations seem to be rare. The aim of this article was to critically review the literature regarding combination syndrome to evaluate the evidence for this concept. A search of the dental literature with Medline/PubMed through July 2002, focusing on the combination syndrome and related features, was undertaken and combined with a hand search of older references and textbooks on removable prosthodontics.
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Affiliation(s)
- Sigvard Palmqvist
- Department of Prosthetic Dentistry, School of Dentistry, University of Copenhagen, Copenhagen, Denmark
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27
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Chaffee NR, Felton DA, Cooper LF, Palmqvist U, Smith R. Prosthetic complications in an implant-retained mandibular overdenture population: initial analysis of a prospective study. J Prosthet Dent 2002; 87:40-4. [PMID: 11807482 DOI: 10.1067/mpr.2002.121486] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
STATEMENT OF PROBLEM The clinical success of implant-retained, tissue-supported mandibular overdenture prostheses has been documented. However, few studies have evaluated the return visits and associated cost required to maintain these prostheses. PURPOSE The purpose of this investigation was to evaluate the amount of maintenance required to provide acceptable and satisfactory implant-retained mandibular overdentures in a prospective clinical trial. MATERIAL AND METHODS Fifty-eight patients received new maxillary and mandibular complete dentures followed by placement of microthreaded/TiOBlast implants in the mandibular left and right canine regions. At 3 months, ball abutments were placed, and the mandibular prostheses were relined to receive Dalla Bona-type ball housings (baseline). Prostheses were prospectively evaluated, and adjustments were made at 3-, 6-, 12-, 24-, and 36-month recall visits and at nonscheduled visits for 9 types of prosthetic complications. RESULTS Of 58 patients, 6 required no adjustments. The remaining 52 patients made 327 return visits (including 194 nonscheduled visits) for prosthesis and/or abutment adjustments. One hundred and fifteen practitioner hours were required to provide prosthetic solutions to patient concerns at the return visits. The total estimated cost for all professional and laboratory services was $12,624.00 ($218.00 per patient). CONCLUSION Although mandibular implant-supported overdentures with Dalla Bona-type ball attachments are an acceptable treatment option for edentulous patients, routine maintenance is required to ensure successful long-term outcomes.
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MESH Headings
- Adult
- Aged
- Biocompatible Materials
- Cuspid
- Dental Abutments/adverse effects
- Dental Abutments/economics
- Dental Implants/adverse effects
- Dental Implants/economics
- Dental Prosthesis Design
- Dental Prosthesis, Implant-Supported/adverse effects
- Dental Prosthesis, Implant-Supported/economics
- Denture Bases
- Denture Rebasing
- Denture Repair
- Denture, Complete, Lower/adverse effects
- Denture, Complete, Lower/economics
- Denture, Complete, Upper/adverse effects
- Denture, Complete, Upper/economics
- Denture, Overlay/adverse effects
- Denture, Overlay/economics
- Follow-Up Studies
- Health Care Costs
- Humans
- Middle Aged
- Prospective Studies
- Prosthesis Fitting
- Time Factors
- Titanium
- Treatment Outcome
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Affiliation(s)
- Nancy R Chaffee
- Department of Prosthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC 27599-7450, USA.
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28
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Abstract
The implant-retained overdenture for the mandible has been shown to be a highly successful prosthetic treatment similar to the fixed implant denture. However, controversy persists as to its design and indications. Few literature reviews have been published on the topic. This article critically analyzes the existing mandibular implant overdenture literature relative to bone preservation, effect on antagonist jaw, number of implants required, anchorage systems, maintenance, and patient satisfaction. A MEDLINE search was completed (from 1987 to 2001), along with a manual search, to locate relevant English-language articles on mandibular implant overdentures. Twelve treatment concepts are elucidated from a distillation of the literature review.
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Affiliation(s)
- S J Sadowsky
- University of Southern California, Los Angeles, USA.
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