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Diez-Fraile A, Barbier L, Abeloos J. Maxillary bone augmentation with calvarial bone graft for immediate full-arch rehabilitation: Insights from a 10-year proof-of-concept retrospective analysis. Clin Oral Implants Res 2024; 35:201-219. [PMID: 38050349 DOI: 10.1111/clr.14215] [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: 06/28/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 12/06/2023]
Abstract
OBJECTIVE Evaluate the long-term outcomes of full-arch rehabilitation using immediate dental implant placement and continuous functional loading with full-fixed dental prostheses (FFDPs). MATERIALS AND METHODS Fifty-six patients received temporary implants (n = 327) at maxillary augmentation with calvarial bone. A provisional acrylic FFDP was immediately loaded onto these implants. After 6 months, the temporary implants were replaced with definitive implants (n = 326) and immediately loaded with a second provisional FFDP (N = 55). Subsequently, a baseline radiograph was taken following a 6-month healing period. The second bridge was then substituted with a definitive FFDP. Primary outcomes included peri-implant marginal bone level (MBL) and definitive implant survival. Secondary outcomes evaluated provisional implant and prostheses survival, complications, and patient satisfaction. RESULTS The provisional implants had a survival rate of 97.9%. One patient was excluded from further analysis due to loss of temporary implants and first FFDP. The definitive implant survival rate after 10 years was 92.2%, with a moderate but significant decrease in MBL between baseline radiography and 10 years later (-0.08 ± 0.18 vs. -0.24 ± 0.44). However, large individual variations were observed, with 65.8% of implants showing no bone loss and 9.2% showing loss ≥0.5 mm. Sinusitis was experienced by 14.3% of patients upon surgery. Patient satisfaction was high or reported no issues after protocol completion (80%). One patient lost all six definitive implants and definitive FFDP 8.2 years after implant placement. CONCLUSIONS The described protocol can be regarded as a long-term, highly successful method for full-arch rehabilitation of atrophied maxillae while enabling continuous masticatory and speaking functionality.
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Affiliation(s)
- Araceli Diez-Fraile
- Division of Maxillo-Facial Surgery, Department of Surgery, General Hospital of Sint-Jan, Bruges, Belgium
| | - Lieven Barbier
- Training Center for Dental Students of KU Leuven, General Hospital of Sint-Jan, Bruges, Belgium
| | - Johan Abeloos
- Division of Maxillo-Facial Surgery, Department of Surgery, General Hospital of Sint-Jan, Bruges, Belgium
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2
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Abou-Ayash S, Fonseca M, Pieralli S, Reissmann DR. Treatment effect of implant-supported fixed complete dentures and implant overdentures on patient-reported outcomes: A systematic review and meta-analysis. Clin Oral Implants Res 2023; 34 Suppl 26:177-195. [PMID: 37750530 DOI: 10.1111/clr.14065] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/22/2023] [Accepted: 03/14/2023] [Indexed: 09/27/2023]
Abstract
OBJECTIVES To analyze the effect of implant treatment in edentulous patients rehabilitated with implant-supported fixed complete dentures (IFCDs) or implant overdentures (IODs) on dental patient-reported outcomes (dPROs). MATERIALS AND METHODS In January 2022, Medline, Embase, CINAHL, Cochrane Library, PubMed Central, Web of Science, and ClinicalTrials.gov were screened for prospective clinical studies on completely edentulous patients treated with IFCDs and/or IODs, reporting pre-treatment and follow-up dPROs. Hedges' g effect sizes (ES) with corresponding 95% confidence intervals (CI) were calculated. Afterward, meta-analyses were conducted using random effect models. RESULTS A total number of 1608 records was initially identified. Of those, 28 studies reporting dPROs from 1457 patients were finally included. The applied dental patient-reported outcome measures (dPROMs) included several versions of the Oral Health Impact Profile (OHIP) or specific items assessing satisfaction with Visual Analogue Scales (VAS). The overall ES was large for rehabilitation with IFCDs (1.68 [CI: 1.15, 2.20]) and IODs (1.26 [CI: 0.99, 1.52]) with no significant difference (p = .165) between the two. Denture stability was the only factor rated significantly higher for IFCDs (ES difference: 2.37 [CI: 0.21, 4.54]; p = .032). Subgroup analyses revealed moderately higher ES for IODs on two implants relative to one implant (ES difference: 0.73 [CI: 0.34, 1.12]; p < .001). CONCLUSIONS There is a strong positive effect of implant treatment in edentulous patients, independent of the type of prosthetic rehabilitation. In patients seeking high stability, IFCDs may be preferable. In mandibular IODs on a single implant, there was a significantly positive effect of an additional implant on dPROs.
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Affiliation(s)
- Samir Abou-Ayash
- Department of Reconstructive Dentistry and Gerodontology, University of Bern, Bern, Switzerland
| | - Manrique Fonseca
- Department of Reconstructive Dentistry and Gerodontology, University of Bern, Bern, Switzerland
| | - Stefano Pieralli
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Daniel R Reissmann
- Department of Prosthetic Dentistry, Center for Dental and Oral Medicine, University Medical Center Freiburg, Freiburg im Breisgau, Germany
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Curado TFF, Silva JR, Nascimento LN, Leles JLR, McKenna G, Schimmel M, Leles CR. Implant survival/success and peri-implant outcomes of titanium-zirconium mini implants for mandibular overdentures: Results from a 1-year randomized clinical trial. Clin Oral Implants Res 2023; 34:769-782. [PMID: 37254798 DOI: 10.1111/clr.14102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/15/2023] [Accepted: 05/18/2023] [Indexed: 06/01/2023]
Abstract
OBJECTIVE To report the 1-year implant survival/success and peri-implant outcomes of mandibular overdentures retained by four titanium-zirconium mini implants (Straumann® Mini Implant System), and to assess how surgery and loading protocols influence these outcomes. MATERIALS AND METHODS A 2 × 2 factorial randomized clinical trial (RCT) tested the combined effects of two loading protocols (immediate or delayed) and two surgical approaches (flapless or flapped) on the success/survival of the mini implants, and peri-implant parameters (plaque, bleeding, sulcus depth, gingival position, and marginal bone loss). Outcomes were assessed up to 1-year after loading, and generalized estimating equations (GEEs) were used to analyze longitudinal and within-patient clustered data. RESULTS Two hundred and ninety-six implants were placed in 74 patients. The implant survival/success rates after 1 year were 100%, and no major biological complications were observed. After 1-year, descriptive data suggest no noticeable changes in plaque scores, whilst a reduction in bleeding scores at the 6-month and 1-year follow-ups compared to baseline. Good longitudinal stability was observed for the probing depth and gingival margin height measures. Overall mean marginal bone loss was 0.68 (±0.68) mm after 3 months and 0.89 (±0.75) mm after 1-year. The flapless protocol showed better results on soft tissue stability and health but a slightly higher risk for marginal bone loss. CONCLUSION The results of this RCT suggest that mandibular overdentures retained by this novel mini implant system represent a safe and predictable treatment option as confirmed by implant survival/success and peri-implant outcomes, even when flapless surgery and immediate loading protocols are adopted.
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Affiliation(s)
| | | | | | | | - Gerald McKenna
- Centre for Public Health, Queen's University Belfast, Belfast, UK
| | - Martin Schimmel
- Department of Reconstructive Dentistry, Division of Gerodontology, School of Dental Medicine of the University of Bern, Bern, Switzerland
- Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Cláudio Rodrigues Leles
- School of Dentistry, Federal University of Goias, Goiania, Brazil
- Department of Reconstructive Dentistry, Division of Gerodontology, School of Dental Medicine of the University of Bern, Bern, Switzerland
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4
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Alshenaiber R, Barclay C, Silikas N. The Effect of Mini Dental Implant Number on Mandibular Overdenture Retention and Attachment Wear. BIOMED RESEARCH INTERNATIONAL 2023; 2023:7099761. [PMID: 37168235 PMCID: PMC10164865 DOI: 10.1155/2023/7099761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 09/02/2022] [Accepted: 04/05/2023] [Indexed: 05/13/2023]
Abstract
Purpose Evaluate the effect of different mini-implant numbers on overdenture retention and evaluate attachment wear following one year of simulated placement/removal. Material and Methods. Nine models simulating atrophic mandibles held 27 mini dental implants in three groups of 2, 3, and 4 mini-implants. A total of 1080 simulated placement/removal cycles were carried out, and a digital force gauge was used to measure the overdenture dislodgment force. The means of the retention forces were analyzed using SPSS with one-way ANOVA and post hoc (p < 0.05). The inner diameter of attachment inserts was evaluated using a light microscope before and after testing. A paired t-test was used to compare the mean of inner ring diameters (p < 0.05). Results The retention was significantly reduced regardless of the mini dental implant number, but the number affected overdenture retention. The placement of 4 mini dental implants provided higher retention and less reduction in retentiveness. However, no significant difference was found when 3 mini dental implants were compared to 2 mini dental implants (p = 0.21). Microscopic examination showed abrasion wear in all inserts following testing. However, the inserts of the 4 mini dental implants showed less wear than those used for 2 or 3 mini dental implants with p ≤ 0.001 and p ≤ 0.001, respectively. Conclusion Mini dental implant overdenture retention force and attachment wear could improve by increasing the mini dental implants to 4. However, there was no difference in retention force or attachment wear when 2 or 3 mini dental implant overdentures were compared.
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Affiliation(s)
- Rafif Alshenaiber
- Prosthetic Dental Sciences Department at College of Dentistry, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Craig Barclay
- Oral Rehabilitation, University Dental Hospital of Manchester, Manchester, UK
| | - Nick Silikas
- Division of Dentistry, Faculty of Biology, Medicine and Health, University of Manchester, Coupland 3 Building, UK Manchester M13 9PL
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5
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Alshenaiber R, Silikas N, Barclay C. Does the Length of Mini Dental Implants Affect Their Resistance to Failure by Overloading? Dent J (Basel) 2022; 10:dj10070117. [PMID: 35877391 PMCID: PMC9323363 DOI: 10.3390/dj10070117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/28/2022] [Accepted: 06/01/2022] [Indexed: 11/28/2022] Open
Abstract
Objective: We aimed to evaluate the failure resistance of different lengths of mini dental implants from the same manufacturer, and to assess their failure following overloading. Materials and Methods: According to the ISO 14801, 15 mini dental implants 2.4 mm in diameter, with lengths of 8.5 mm, 10 mm, or 13 mm, were subjected to compression loading until failure using a universal testing machine. The mean load-to-failure values for each length of the mini dental implants were calculated and analysed using SPSS®, via one-way ANOVA (p < 0.05). Results: The mean load to failure for mini dental implants was 329 N (SD 6.23), 326 N (SD 5.95), and 325 N (SD 6.99) for the 13 mm, 10 mm, and 8.5 mm implants, respectively. A comparison of means showed no significant difference between the groups (p = 0.70). The tested mini dental implants exhibited bending failure modes below the first thread. Conclusion: Under high compressive loading testing, there was no effect of the length on the failure of the mini dental implants following overloading. Moreover, all tested mini dental implants with different lengths showed the same failure mode and distortion location.
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Affiliation(s)
- Rafif Alshenaiber
- Division of Dentistry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK;
- Prosthetic Dental Sciences Department, College of Dentistry, Prince Sattam Bin Abdulaziz University, Al-Kharj 16278, Saudi Arabia
- Correspondence: ; Tel.: +44-747-742-6007
| | - Nick Silikas
- Division of Dentistry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK;
| | - Craig Barclay
- Restorative Dentistry, University of Manchester Dental Hospital, Manchester M15 6FH, UK;
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6
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Vi S, Pham D, Du YYM, Arora H, Tadakamadla SK. Mini-Implant-Retained Overdentures for the Rehabilitation of Completely Edentulous Maxillae: A Systematic Review and Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18084377. [PMID: 33924167 PMCID: PMC8074399 DOI: 10.3390/ijerph18084377] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 11/16/2022]
Abstract
Purpose: Mini-dental implants (MDIs) have been used to support and retain overdentures, providing patients with a less invasive placement procedure. Although lucrative, the use of MDIs to retain a maxillary overdenture is still not an established treatment modality. This systematic review aims to answer the question: Do mini-implant-retained maxillary overdentures provide a satisfactory treatment outcome for complete edentulism? Methods: A systematic search for relevant articles was conducted to include articles published until April 2021 in the following electronic databases: CINAHL, Cochrane, EMBASE, PubMed, and Web of Science. All empirical studies evaluating the biological, survival, or patient-reported outcomes after placing mini-implant-retained overdentures in maxilla were considered for inclusion. The risk of bias was assessed by utilizing the Joanna Briggs Institute critical appraisal checklist. Study screening and data extraction were conducted by three reviewers independently. Results: The electronic search retrieved 1276 titles after omitting duplicates. Twenty articles were considered for full-text review, of which six studies were included in this systematic review. The included studies evaluated a total of 173 participants with a mean age of 66.3 years. The overall mini-implant survival rate was 77.1% (95% CI: 64.7–89.5%) with a mean follow-up time of 1.79 years (range: 6 months to 3 years). Implant survival differed significantly when comparing complete and partial palatal coverage overdentures. Those with complete palatal coverage exhibited less bone loss overall compared to partial coverage overdentures. Participants of all studies reported an increase in the quality of life and in satisfaction after rehabilitation treatment with MDIs. Conclusions: The survival rate of mini-implants retaining an overdenture in the maxilla was observed to be lower than the values reported for traditional implants in the literature. Improvements were observed in all aspects in terms of patient satisfaction, quality of life, oromyofunction, and articulation after the treatment.
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Affiliation(s)
- Serena Vi
- School of Medicine and Dentistry, Griffith University, Gold Coast 4222, Australia; (S.V.); (D.P.); (Y.Y.M.D.); (S.K.T.)
| | - Damon Pham
- School of Medicine and Dentistry, Griffith University, Gold Coast 4222, Australia; (S.V.); (D.P.); (Y.Y.M.D.); (S.K.T.)
| | - Yu Yian Marina Du
- School of Medicine and Dentistry, Griffith University, Gold Coast 4222, Australia; (S.V.); (D.P.); (Y.Y.M.D.); (S.K.T.)
| | - Himanshu Arora
- School of Dentistry, The University of Queensland, Brisbane 4006, Australia
- Correspondence:
| | - Santosh Kumar Tadakamadla
- School of Medicine and Dentistry, Griffith University, Gold Coast 4222, Australia; (S.V.); (D.P.); (Y.Y.M.D.); (S.K.T.)
- Menzies Health Institute Queensland, Griffith University, Gold Coast 4222, Australia
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Rajaraman V, Nallaswamy D, Ganapathy DM, Ashok V. An Innovative Meta-Systematic Review into the Landscape of Literature and the Concluding Evidence on the Quality of Life of Patients Using Two Implant Supported Mandibular Complete Denture Prosthesis. JOURNAL OF ADVANCED ORAL RESEARCH 2020. [DOI: 10.1177/2320206820953992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Aim: The aim of this systematic review is to analyze the existing evidence on the quality of life of patients completely edentulous in the mandible. Materials and Methods: A search questionnaire was formulated using population intervention comparison outcome (PICO) analysis, and a comprehensive search was initiated in PubMed Central, Medline, Cochrane, and Google Scholar databases for the related topics. Manuscripts published till December 2019 were included in this review. Out of the 63 articles obtained from searching all databases, 27 studies were excluded based on the title and abstract. Out of the remaining 36 studies, 12 were excluded based on the inclusion and exclusion criteria of our interest and 24 were included on the basis of core data. Results: One review author identified randomized trials meeting inclusion criteria for this review. Two review authors extracted data and assessed study quality. The oral health-related quality of life in completely edentulous mandibular patients wearing implant-supported overdentures was better when compared to conventional tissue-supported complete denture, and a minimum two implant-supported mandibular complete denture has sufficient improvement in oral health-related quality of life. Conclusion: There are about more than 170 reviews and clinical trials that have been published in support of the same for the past two decades. Thus, the clinicians may not be tempted in placing additional implants in well-formed mandibular edentulous ridges. To enhance the understanding of mandibular implant overdenture treatment, clinicians must scrutinize the existing evidence and formulate a protocol by striking a balance between efficient and evidence based treatment.
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Affiliation(s)
- Vaishnavi Rajaraman
- Department of Prosthodontics and Implantology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Deepak Nallaswamy
- Department of Prosthodontics and Implantology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Dhanraj M. Ganapathy
- Department of Prosthodontics and Implantology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - V. Ashok
- Department of Prosthodontics and Implantology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
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8
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Van Doorne L, Fonteyne E, Matthys C, Bronkhorst E, Meijer G, De Bruyn H. "Longitudinal Oral Health-Related Quality of Life in maxillary mini dental implant overdentures after 3 years in function". Clin Oral Implants Res 2020; 32:23-36. [PMID: 33043547 DOI: 10.1111/clr.13677] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 08/17/2020] [Accepted: 09/28/2020] [Indexed: 01/10/2023]
Abstract
OBJECTIVES Longitudinal evaluation of Oral Health-Related Quality of Life (OHRQoL) during treatment of flaplessly placed, one-piece mini-dental-implants (MDIs) for maxillary overdentures is rarely investigated, nor is the impact of MDI failures. MATERIAL AND METHODS This multicenter prospective cohort study evaluated the 3-year outcome of 5-6 MDIs in the edentulous maxilla in patients above 50 years with dentate mandible. Provisional dentures were provided before final prosthetic connection was established at 6 months. Postoperative discomfort was assessed using a visual analogue score (VAS). OHRQoL was investigated using the Oral Health Impact Profile (OHIP)-14 at baseline (preoperatively), postoperatively, post-prosthetic connection and after 3 years in function. RESULTS 164 (78.4%) of the 204 placed MDIs were still in situ after 3 years, in 29/31 patients. Two patients lost 5/6 MDIs resulting in two prosthetic failures (6.45%). With regard to pain, a score of 4.1/10 (SD 2.8) was recorded on day 1, and 1.1/10 (SD 1.7) on day 7. A decrease in total OHIP-14 scores was observed postoperatively (15.6; SD 12.8) as compared to baseline (21.3; SD 13.1), with improvement of OHRQoL. Furthermore, this was statistically significant at connection of the final prosthesis (7.3; SD 6.7) (p = .006). The OHIP-14 improved less (p = .011) when experiencing one or more implant losses (9.5; SD: 9.85), in comparison with no implant loss (20.7; SD: 13.97). A failure of one MDI did not affect OHIP-14 score (p = .658); however, multiple failures did (p = .007). CONCLUSION Maxillary MDI overdenture treatment yields significant OHRQoL improvement when at least 5 MDIs survive, preserving functional comfort.
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Affiliation(s)
- Luc Van Doorne
- Cosmipolis Clinic, Brugge, Belgium.,Ghent University Hospital, Gent, Belgium
| | | | | | - Ewald Bronkhorst
- Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, Netherlands
| | - Gert Meijer
- Department of Dentistry-Implantology and Periodontology, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, Netherlands
| | - Hugo De Bruyn
- Department of Dentistry-Implantology and Periodontology, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, Netherlands
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Hussein MO, Alruthea MS. Marginal Bone Level Changes and Oral Health Impact Profile (14) Score of Smokers Treated by Mandibular Mini Implant Overdentures: A 5-Year Follow-up Study. Eur J Dent 2020; 14:590-597. [PMID: 32777837 PMCID: PMC7535974 DOI: 10.1055/s-0040-1714763] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Objectives
Studies considered edentulous patients having smoking habit as a compromised oral condition. This research examined the value of using mini implant mandibular overdenture to maintain long-term satisfactory levels of oral health quality of life and marginal vertical bone loss.
Materials and Methods
Twenty-nine edentulous patients with smoking habit received four mini implants in the mandible loaded by overdentures. The present study monitored patients radiographically for vertical bone loss after (1 month, 1, 3, and 5 years) of treatment. Patients were also evaluated by oral health impact profile 14 (OHIP-14) pretreatment and at 1 and 5 years of treatment.
Statistical Analysis
Repeated measure analysis of variance with Bonferroni’s test as a post-hoc test was used to see the difference among time points. Independent sample
t
-tests were used to compare between anterior and posterior mini implant positions after 5 years of follow-up. OHIP-14 questionnaire was analyzed by Wilcoxon signed ranks for pairwise comparisons at different evaluation times. A Holm-Bonferroni correction method was used to control the familywise error rate.
Results
The mean of the bone height changes showed a significant difference between 1-month data and all other evaluation intervals while no significance was calculated among other evaluation intervals. Bone loss of the mini implants placed anteriorly was less than those placed posteriorly with a statistically significant difference. A significant reduction in the OHIP-14 score levels was observed between pretreatment and both 1 and 5 years of treatment. No significance was seen between the first and fifth year after treatment.
Conclusion
Mini implant overdenture could maintain satisfactory marginal bone level changes and oral health quality of life for patients with smoking habit after 5-year follow-up period.
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Affiliation(s)
- Mostafa Omran Hussein
- Department of Prosthodontic Sciences, College of Dentistry in Ar Rass, Qassim University, Saudi Arabia
| | - Mohammed Suliman Alruthea
- Department of Prosthodontic Sciences, College of Dentistry in Ar Rass, Qassim University, Saudi Arabia
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10
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Three-Dimensional Radiographic Outcome of Free-Handed Flaplessly Placed Mini Dental Implants in Edentulous Maxillae after 2-Years Function. J Clin Med 2020; 9:jcm9072120. [PMID: 32635649 PMCID: PMC7408764 DOI: 10.3390/jcm9072120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/22/2020] [Accepted: 06/29/2020] [Indexed: 12/15/2022] Open
Abstract
Background: Free-handed, flaplessly placed mini dental implants (MDIs) are a valuable, more affordable and minimally invasive treatment to support overdentures in fully edentulous jaws, especially for medically compromised patients. However, critical 3D radiographic evaluation is lacking. This multicenter prospective case series assessed clinical outcome and carried out 3D- cone-beam computerized tomography (CBCT) analysis of free-handed flaplessly placed one-piece maxillary MDIs by an experienced maxillofacial surgeon. Methods: Thirty-one patients suffering from an ill-fitting maxillary denture relating to compromised bone volume (as confirmed on CBCT), with a dentate mandible, were selected. They received 5–6 MDIs free-hand flaplessly placed and mentally guided with preoperative CBCT. Final connection and attachment activation took place six months later. After two years each implant was individually assessed with CBCT for perforations on eight sites. Implant survival, prosthetic failure, clinical stability and sinus/nasal complaints were registered after three years. Results: 32/185 (17.3%) MDIs failed during the provisional loading with non-activated attachments; 17 replacements in 10 patients were performed. Of the 170 actively loaded 170 MDIs, 82.3% survived and 27/31 prostheses (87%) were fully functional. In total 98/170 MDIs showed no perforation. Based on 1360 CBCT observations, 231 perforations (16.9%) were registered. Of most perforations 37 (25%) were observed at the apical tip and 37 were positioned (21%) into the sinus/nasal cavity, although without clinical complaints. Conclusions: Given the compromised population, the minimally invasive procedure and the low treatment cost involved, a failure rate of 17% is substantial, however clinically acceptable given the critical bone condition. However, even in experienced surgical hands, freehanded and flapless placement yield a high risk for implant perforation, although this did not necessarily lead to complications.
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11
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Al Jaghsi A, Heinemann F, Biffar R, Mundt T. Immediate versus delayed loading of strategic mini-implants under existing removable partial dentures: patient satisfaction in a multi-center randomized clinical trial. Clin Oral Investig 2020; 25:255-264. [PMID: 32533264 DOI: 10.1007/s00784-020-03360-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 05/19/2020] [Indexed: 12/01/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate and compare the effects of the immediate and delayed loading of strategic mini-implants (MIs) on the satisfaction of patients with removable partial dentures (RPDs). MATERIALS AND METHODS In this multi-center randomized clinical trial, strategic MIs were inserted under 79 RPDs in 76 participants. Two questionnaires, one for the upper jaw and one for the lower jaw, were given before surgical intervention and 2 weeks, 4 months, 4.5 months, 1 year, 2 years, and 3 years after implant insertion. To estimate the loading effect (immediate vs. delayed) in terms of the odds ratio, an ordinal logistic regression model was used. The Wilcoxon matched-pairs signed-rank test, which was corrected for clusters in the patient population, was used to evaluate changes in patient satisfaction. RESULTS After 4 months, a statistically significant difference in favor of the immediate loading group was recognized in terms of the overall satisfaction score. The patient satisfaction scores recorded after 4.5 months and 1, 2, and 3 years showed substantial improvements compared with the scores recorded before implant insertion in both groups. At the item level, substantial improvements were noted in the following domains: general satisfaction, RPD retention, stability, support, eating, speaking, and aesthetics. CONCLUSIONS Strategic MIs improved the satisfaction of patients with RPDs during the medium-term follow-up period. An earlier improvement in the satisfaction of patients with RPDs was seen after immediate loading of the MIs as compared with delayed loading. CLINICAL RELEVANCE Inserting MIs under existing RPDs can improve patients' satisfaction with their RPDs in several domains.
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Affiliation(s)
- Ahmad Al Jaghsi
- Department of Prosthodontics, Gerodontology and Dental Materials, Greifswald University Medicine, Greifswald, Germany. .,Restorative Department, College of Dentistry, Ajman University, University Street, Al jerf 1, Ajman, United Arab Emirates.
| | - Friedhelm Heinemann
- Department of Prosthodontics, Gerodontology and Dental Materials, Greifswald University Medicine, Greifswald, Germany.,Private Practice, Morsbach-, Lichtenberg, Germany
| | - Reiner Biffar
- Department of Prosthodontics, Gerodontology and Dental Materials, Greifswald University Medicine, Greifswald, Germany
| | - Torsten Mundt
- Department of Prosthodontics, Gerodontology and Dental Materials, Greifswald University Medicine, Greifswald, Germany
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Van Doorne L, De Kock L, De Moor A, Shtino R, Bronkhorst E, Meijer G, De Bruyn H. Flaplessly placed 2.4-mm mini-implants for maxillary overdentures: a prospective multicentre clinical cohort study. Int J Oral Maxillofac Surg 2020; 49:384-391. [DOI: 10.1016/j.ijom.2019.08.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/31/2019] [Accepted: 08/21/2019] [Indexed: 11/26/2022]
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13
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Retention force and deformation of an innovative attachment model for mini-implant–retained overdentures. J Prosthet Dent 2019; 121:129-134. [DOI: 10.1016/j.prosdent.2018.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 04/09/2018] [Accepted: 04/10/2018] [Indexed: 11/18/2022]
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14
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Goiato MC, Sônego MV, Pellizzer EP, Gomes JMDL, da Silva EVF, dos Santos DM. Clinical outcome of removable prostheses supported by mini dental implants. A systematic review. Acta Odontol Scand 2018; 76:628-637. [PMID: 30156132 DOI: 10.1080/00016357.2018.1499958] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
INTRODUCTION For many years, edentulous patients have had no other option than conventional dentures to reestablish their oral function. To avoid the need for bone graft surgery, some professionals have suggested the use of mini dental implants (MDIs) to support prostheses. The MDIs are narrow implants, ranging approximately from 1.8 to 2.9 mm in diameter. Recently, the promising results of mini implants regarding osseointegration and patient satisfaction have led clinicians to accept them as a definitive treatment option. OBJECTIVE Therefore, the proposition of this systematic review was to assess information on the outcomes of MDIs supporting removable prostheses. METHODS The PubMed and Cochrane databases were searched for articles published before September 2017, which yielded a total of 774 studies for analysis. After exclusion and inclusion criteria, 22 prospective studies were included in this systematic review. RESULTS Most mini implants were placed in a flapless single-stage surgery and loaded immediately. Most studies reported failures in the first year and prosthetic complications. The mean survival rate of the selected studies was 95.6%, and mean follow-up was 22.8 months. CONCLUSION The MDI-supported removable prostheses successfully improved patients' chewing and speaking ability, quality of life, and satisfaction, suggesting that MDIs are a viable and safe option to support removable prostheses in the mandibular arch.
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Affiliation(s)
- Marcelo Coelho Goiato
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Univ Estadual Paulista (UNESP), Aracatuba, Brazil
| | - Mariana Vilela Sônego
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Univ Estadual Paulista (UNESP), Aracatuba, Brazil
| | - Eduardo Piza Pellizzer
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Univ Estadual Paulista (UNESP), Aracatuba, Brazil
| | - Jéssica Marcela de Luna Gomes
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Univ Estadual Paulista (UNESP), Aracatuba, Brazil
| | - Emily Vivianne Freitas da Silva
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Univ Estadual Paulista (UNESP), Aracatuba, Brazil
| | - Daniela Micheline dos Santos
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Univ Estadual Paulista (UNESP), Aracatuba, Brazil
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Schiegnitz E, Al‐Nawas B. Narrow‐diameter implants: A systematic review and meta‐analysis. Clin Oral Implants Res 2018; 29 Suppl 16:21-40. [DOI: 10.1111/clr.13272] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Eik Schiegnitz
- Department of Oral and Maxillofacial Surgery, Plastic Surgery University Medical Centre of the Johannes Gutenberg‐University Mainz Mainz Germany
| | - Bilal Al‐Nawas
- Department of Oral and Maxillofacial Surgery, Plastic Surgery University Medical Centre of the Johannes Gutenberg‐University Mainz Mainz Germany
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Warin P, Rungsiyakull P, Rungsiyakull C, Khongkhunthian P. Effects of different numbers of mini-dental implants on alveolar ridge strain distribution under mandibular implant-retained overdentures. J Prosthodont Res 2018. [PMID: 28625664 DOI: 10.1016/j.jpor.2017.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Marcello-Machado RM, Faot F, Schuster AJ, Nascimento GG, Del Bel Cury AA. Mini-implants and narrow diameter implants as mandibular overdenture retainers: A systematic review and meta-analysis of clinical and radiographic outcomes. J Oral Rehabil 2017; 45:161-183. [DOI: 10.1111/joor.12585] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2017] [Indexed: 02/07/2023]
Affiliation(s)
- R. M. Marcello-Machado
- Department of Prosthodontics and Periodontology; Piracicaba Dental School, State University of Campinas Piracicaba; SP Brazil
| | - F. Faot
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas RS Brazil
| | - A. J. Schuster
- Graduate Program in Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas RS Brazil
| | - G. G. Nascimento
- Department of Dentistry and Oral Health; Aarhus University; Aarhus Denmark
| | - A. A. Del Bel Cury
- Department of Prosthodontics and Periodontology; Piracicaba Dental School; State University of Campinas; Piracicaba Brazil
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18
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Batisse C, Bonnet G, Veyrune JL, Nicolas E, Bessadet M. Predictive Parameters of Oral Health Quality of Life in Complete Mandibular Denture Wearers Stabilized by Mini-Implants: A Two-Year Follow-Up Study. MATERIALS 2017; 10:ma10101197. [PMID: 29048334 PMCID: PMC5667003 DOI: 10.3390/ma10101197] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/03/2017] [Accepted: 10/10/2017] [Indexed: 11/26/2022]
Abstract
The frequent instability of mandibular removable complete dentures affects patient Oral Health Related Quality of Life (OHRQoL). An innovative therapeutic strategy used to improve stability involves placing four symphyseal mini-implants. This study was aimed at assessing OHRQoL over time in subjects in which mini-implants were placed and exploring if certain parameters could predict the evolution of their OHRQoL. The Quality of life of subjects with dentures was assessed using the Geriatric Oral Health Assessment Index (GOHAI) before (T0), 2–6 months (T1), twelve months (T2) and twenty-four or more months (T3) after mini-implant setting. Age, gender and chewing ability were tested as explanatory variables for the change in OHRQoL with time. Thirteen women and six men were included (mean age: 69 ± 10 years). After mini-implant placement, mean GOHAI scores at T1, T2 and T3 increased significantly (p < 0.001). The GOHAI-Add mean score was not affected by age or gender. Baseline chewing ability impacted the “functional” and “pain and discomfort” fields of the mean GOHAI scores (p < 0.05). The OHRQoL was quickly improved after mini-implant placement in complete denture wearers and then stabilized over time. Baseline chewing ability can be used as a predictive parameter of OHRQoL.
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Affiliation(s)
- Cindy Batisse
- Université Clermont Auvergne, CROC EA4847, BP 10448, F-63000 Clermont-Ferrand, France; CHU de Clermont-Ferrand, Service d'Odontologie, F-63000 Clermont-Ferrand, France.
| | - Guillaume Bonnet
- Université Clermont Auvergne, CROC EA4847, BP 10448, F-63000 Clermont-Ferrand, France; CHU de Clermont-Ferrand, Service d'Odontologie, F-63000 Clermont-Ferrand, France.
| | - Jean-Luc Veyrune
- Université Clermont Auvergne, CROC EA4847, BP 10448, F-63000 Clermont-Ferrand, France; CHU de Clermont-Ferrand, Service d'Odontologie, F-63000 Clermont-Ferrand, France.
| | - Emmanuel Nicolas
- Université Clermont Auvergne, CROC EA4847, BP 10448, F-63000 Clermont-Ferrand, France; CHU de Clermont-Ferrand, Service d'Odontologie, F-63000 Clermont-Ferrand, France.
| | - Marion Bessadet
- Université Clermont Auvergne, CROC EA4847, BP 10448, F-63000 Clermont-Ferrand, France; CHU de Clermont-Ferrand, Service d'Odontologie, F-63000 Clermont-Ferrand, France.
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Kim Y. Mini Implant–Retained Complete Overdenture Can be an Alternative Treatment Option for Selected Patients. J Evid Based Dent Pract 2017; 17:116-118. [DOI: 10.1016/j.jebdp.2017.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Jawad S, Barclay C, Whittaker W, Tickle M, Walsh T. A pilot randomised controlled trial evaluating mini and conventional implant retained dentures on the function and quality of life of patients with an edentulous mandible. BMC Oral Health 2017; 17:53. [PMID: 28202072 PMCID: PMC5310054 DOI: 10.1186/s12903-017-0333-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 01/06/2017] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND Total tooth loss (edentulism) can be a debilitating condition, impacting on ability to chew, speak and interact with others. The most common treatment is with complete removable dentures, which may be successful, but in the lower jaw, bone resorption that worsens over time makes denture-wearing difficult. Two dental implants in the mandible to retain the lower denture has been advocated as the gold standard of treatment, but has not been universally provided due largely to financial constraints and also patient fear. Mini implants (MI) are cheaper and less invasive than conventional implants (CI), but may not have equivalent longevity. Therefore, it is unknown whether they represent a cost-effective treatment modality over time. The aim of this pilot randomised controlled trial was to assess the feasibility of carrying out a trial on this cohort of patients, and to inform the study design of a large multicentre trial. METHODS Forty-six patients were randomly allocated to receive either two mini implants or two conventional implants in the mandible to retain their lower dentures. Quality of life (QoL) questionnaires, pain and anxiety scores, and an objective "gummy jelly" chewing test were carried out at multiple timepoints, along with detailed health economics information. Implants were placed one-stage, and an early loading protocol was utilised. Patients were reviewed 8 weeks post-placement, and finally at 6 months. Implant failure, recruitment and retention rates were recorded and analysed. RESULTS The pilot study demonstrated that it is possible to recruit, randomise and retain edentulous (mainly elderly) patients for an implant trial. We recruited to target and retention rates were acceptable. The large number of questionnaires was onerous for participants to complete, but the distribution of scores and feedback from participants helped inform the choice of primary and secondary outcomes in a full trial. The chewing test was time-consuming and inconsistent. Implant failure rate was low (1/46). The data on indirect costs gathered at every visit was viewed as repetitive and unnecessary, as there was little or no change between visits. CONCLUSIONS The pilot study has shown that acceptable recruitment and retention rates are achievable in this population of patients for this intervention. The results provide valuable information for selection of outcome variables and sample size calculations for future trials. TRIAL REGISTRATION (ISRCTN): 87342238 Trial registration date: 05/07/2013.
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Affiliation(s)
- Sarra Jawad
- Department of Restorative Dentistry, University Dental Hospital of Manchester, Higher Cambridge Street, Manchester, M15 6FH, UK.
| | - Craig Barclay
- Department of Restorative Dentistry, University Dental Hospital of Manchester, Higher Cambridge Street, Manchester, M15 6FH, UK
| | - William Whittaker
- Division of Population Health, Health Services Research and Primary Care, School of Health Sciences, University of Manchester, Manchester, UK
| | - Martin Tickle
- Division of Dentistry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Tanya Walsh
- Division of Dentistry, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
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Lemos CAA, Verri FR, Batista VEDS, Júnior JFS, Mello CC, Pellizzer EP. Complete overdentures retained by mini implants: A systematic review. J Dent 2017; 57:4-13. [DOI: 10.1016/j.jdent.2016.11.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/31/2016] [Accepted: 11/21/2016] [Indexed: 12/21/2022] Open
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22
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Aunmeungtong W, Kumchai T, Strietzel FP, Reichart PA, Khongkhunthian P. Comparative Clinical Study of Conventional Dental Implants and Mini Dental Implants for Mandibular Overdentures: A Randomized Clinical Trial. Clin Implant Dent Relat Res 2016; 19:328-340. [PMID: 27804205 DOI: 10.1111/cid.12461] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Revised: 09/26/2016] [Accepted: 10/09/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Dental implant-retained overdentures have been chosen as the treatment of choice for complete mandibular removable dentures. Dental implants, such as mini dental implants, and components for retaining overdentures, are commercially available. However, comparative clinical studies comparing mini dental implants and conventional dental implants using different attachment for implant-retained overdentures have not been well documented. PURPOSE To compare the clinical outcomes of using two mini dental implants with Equator® attachments, four mini dental implants with Equator attachments, or two conventional dental implants with ball attachments, by means of a randomized clinical trial. MATERIALS AND METHODS Sixty patients received implant-retained mandibular overdentures in the interforaminal region. The patients were divided into three groups. In Groups 1 and 2, two and four mini dental implants, respectively, were placed and immediately loaded by overdentures, using Equator® attachments. In Group 3, conventional implants were placed. After osseointegration, the implants were loaded by overdentures, using ball attachments. The study distribution was randomized and double-blinded. Outcome measures included changes in radiological peri-implant bone level from surgery to 12 months postinsertion, prosthodontic complications and patient satisfaction. RESULTS The cumulative survival rate in the three clinical groups after one year was 100%. There was no significant difference (p < 0.05) in clinical results regarding the number (two or four) of mini dental implants with Equator attachments. However, there was a significant difference in marginal bone loss and patient satisfaction between those receiving mini dental implants with Equator attachments and conventional dental implants with ball attachments. The marginal bone resorption in Group 3 was significantly higher than in Groups 1 and 2 (p < 0.05); there were no significant differences between Groups 1 and 2. There was no significant difference in patient satisfaction between Groups 1 and 2 but it was significantly higher than that in Group3 (p < 0.05). CONCLUSIONS Two and four mini dental implants can be immediately used successfully for retaining lower complete dentures, as shown after a 1-year follow up.
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Affiliation(s)
- Weerapan Aunmeungtong
- Center of Excellence for Dental Implantology, Faculty of Dentistry, Chiang Mai University, Thailand
| | - Thongnard Kumchai
- Associate Professor, Department of Oral Surgery, Faculty of Dentistry, Chiang Mai University, Thailand
| | - Frank P Strietzel
- Professor, Department of Oral Medicine, Dental Radiology and Oral Surgery, Charite Medical University of Berlin, Berlin, Germany
| | - Peter A Reichart
- Professor, Department of Oral Medicine, Dental Radiology and Oral Surgery, Charite Medical University of Berlin, Berlin, Germany
| | - Pathawee Khongkhunthian
- Associate Professor, Center of Excellence for Dental Implantology, Faculty of Dentistry, Chiang Mai University, Thailand
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23
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Magnet-Retained Two-Mini-Implant Overdenture: Clinical and Mechanical Consideration. Dent J (Basel) 2016; 4:dj4040035. [PMID: 29563477 PMCID: PMC5806947 DOI: 10.3390/dj4040035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 09/20/2016] [Accepted: 09/29/2016] [Indexed: 11/17/2022] Open
Abstract
Two-implant overdentures have become the accepted treatment for restoring mandibular edentulism. The dimensions of regular implants sometimes limit their use, such as in the case of narrow ridges. Mini-implants with reduced diameters (less than 3.0 mm) enable insertion into narrow ridges. A magnet-retained two-mini-implant overdenture system was developed and is described in this paper. Additionally, we describe a clinical mandibular procedure using the system and evaluate its biomechanical performance.
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Temizel S, Heinemann F, Dirk C, Bourauel C, Hasan I. Clinical and radiological investigations of mandibular overdentures supported by conventional or mini-dental implants: A 2-year prospective follow-up study. J Prosthet Dent 2016; 117:239-246.e2. [PMID: 27671375 DOI: 10.1016/j.prosdent.2016.07.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 06/30/2016] [Accepted: 07/01/2016] [Indexed: 11/20/2022]
Abstract
STATEMENT OF PROBLEM Conventional dental implants are not applicable in the mandibular interforaminal region if bone volume is limited. Mini-dental implants offer an alternative means of supporting mandibular overdentures in a narrow residual ridge, without additional surgery. PURPOSE The purpose of this nonrandomized clinical trial was to compare the ability of mini-dental implants with that of conventional dental implants in supporting mandibular overdentures during a 2-year clinical follow-up. Bone quality, bone resorption, implant stability, and oral health were assessed radiographically. MATERIAL AND METHODS A total of 32 participants with edentulism were included. Twenty-two participants (99 implants) received 4 to 5 mini-dental implants (diameter: 1.8-2.4 mm; length: 13-15 mm, study group), and 10 participants (35 implants) received 2 to 4 conventional dental implants (diameter: 3.3-3.7 mm; length: 11-13 mm, control group). The selection of the participants in the study or control group was based on the available bone volume in the mandible. The selection was not randomized. The density of cortical bone thickness was measured in Hounsfield units (HU) from computed tomography data, and patients were followed for 2 years. The participants were examined 3, 6, 12, and 24 months after surgery. Primary stability immediately after the insertion of dental implants (Periotest), secondary stability 6 months after implantation, modified plaque, bleeding on probing indices, and probing depth were measured and analyzed statistically (α=.05). RESULTS The mean HU value 6 months after implantation in the participants who received mini-dental implants was significantly (P=.035) higher (1250 HU) than that in the participants who received conventional dental implants (1100 HU). The probing depths around the conventional dental implants (1.6 and 1.8 mm, respectively) were significantly higher than those around the mini-dental implants (1.3 and 1.2 mm, respectively) 12 and 24 months after surgery, respectively (P<.001). The mean primary and secondary stability values for conventional dental implants were -4.0 and -4.9, respectively. The primary and secondary stability values for the mini-dental implants were -0.3 and -1.4, respectively. The Periotest values of the primary (measured immediately after implant insertion) and secondary implant stabilities (measured 6 months after implant insertion) were significantly higher for the conventional dental implants than for the mini-dental implants (P<.001). CONCLUSIONS Based on this 2-year clinical trial, patients receiving mini-dental implants had clinical outcomes similar to those of patients receiving conventional dental implants to support overdenture prostheses.
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Affiliation(s)
- Sonay Temizel
- Dental student, Endowed Chair of Oral Technology, Rheinische Friedrich-Wilhelms University, Bonn, Germany
| | - Friedhelm Heinemann
- Research Associate Professor, Department of Prosthodontics, Gerodontology and Biomaterials, University of Greifswald, Greifswald, Germany
| | - Cornelius Dirk
- Doctoral student, Endowed Chair of Oral Technology, Rheinische Friedrich-Wilhelms University, Bonn, Germany
| | - Christoph Bourauel
- Professor, Endowed Chair of Oral Technology, Rheinische Friedrich-Wilhelms University, Bonn, Germany
| | - Istabrak Hasan
- Senior researcher, Department of Prosthetic Dentistry, Preclinical Education and Materials Science, Dental School, Rheinische Friedrich-Wilhelms University, Bonn, Germany.
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Batisse C, Bonnet G, Bessadet M, Veyrune J, Hennequin M, Peyron M, Nicolas E. Stabilization of mandibular complete dentures by four mini implants: Impact on masticatory function. J Dent 2016; 50:43-50. [DOI: 10.1016/j.jdent.2016.04.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 04/28/2016] [Accepted: 04/30/2016] [Indexed: 10/21/2022] Open
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Catalán A, Martínez A, Marchesani F, González U. Mandibular Overdentures Retained by Two Mini-Implants: A Seven-Year Retention and Satisfaction Study. J Prosthodont 2015; 25:364-70. [DOI: 10.1111/jopr.12373] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2015] [Indexed: 11/30/2022] Open
Affiliation(s)
- Alfonso Catalán
- Department of Oral Rehabilitation, Faculty of Dentistry; University of Concepcion; Concepcion Chile
| | - Alejandra Martínez
- Department of Oral Rehabilitation, Faculty of Dentistry; University of Concepcion; Concepcion Chile
| | - Francisco Marchesani
- Department of Oral Pathology, Faculty of Dentistry; University of Concepcion; Concepcion Chile
| | - Urcesino González
- Department of Oral Rehabilitation, Faculty of Dentistry; University of Concepcion; Concepcion Chile
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Ribeiro AB, Della Vecchia MP, Cunha TR, Sorgini DB, dos Reis AC, Muglia VA, de Albuquerque RF, de Souza RF. Short-term post-operative pain and discomfort following insertion of mini-implants for retaining mandibular overdentures: a randomized controlled trial. J Oral Rehabil 2015; 42:605-14. [DOI: 10.1111/joor.12287] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2015] [Indexed: 01/02/2023]
Affiliation(s)
- A. B. Ribeiro
- Department of Dental Materials and Prosthetics; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - M. P. Della Vecchia
- Department of Dental Materials and Prosthetics; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - T. R. Cunha
- Department of Dental Materials and Prosthetics; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - D. B. Sorgini
- Department of Dental Materials and Prosthetics; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - A. C. dos Reis
- Department of Dental Materials and Prosthetics; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - V. A. Muglia
- Department of Dental Materials and Prosthetics; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - R. F. de Albuquerque
- Department of Dental Materials and Prosthetics; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
| | - R. F. de Souza
- Department of Dental Materials and Prosthetics; School of Dentistry of Ribeirão Preto; University of São Paulo; Ribeirão Preto Brazil
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Chladek G, Żmudzki J, Kasperski J. Long-Term Soft Denture Lining Materials. MATERIALS 2014; 7:5816-5842. [PMID: 28788163 PMCID: PMC5456172 DOI: 10.3390/ma7085816] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/31/2014] [Accepted: 08/01/2014] [Indexed: 11/16/2022]
Abstract
Long-term soft denture lining (LTSDL) materials are used to alleviate the trauma associated with wearing complete dentures. Despite their established clinical efficacy, the use of LTSDLs has been limited due to the unfavorable effects of the oral environment on some of their mechanical and performance characteristics. The unresolved issue of LTSDL colonization by Candida albicans is particularly problematic. Silicone-based LTSDL (SLTSDL) materials, which are characterized by more stable hardness, sorption and solubility than acrylic-based LTSDLs (ALTSDLs), are currently the most commonly used LTSDLs. However, SLTSDLs are more prone to debonding from the denture base. Moreover, due to their limitations, the available methods for determining bond strength do not fully reflect the actual stability of these materials under clinical conditions. SLTSDL materials exhibit favorable viscoelastic properties compared with ALTSDLs. Furthermore, all of the lining materials exhibit an aging solution-specific tendency toward discoloration, and the available cleansers are not fully effective and can alter the mechanical properties of LTSDLs. Future studies are needed to improve the microbiological resistance of LTSDLs, as well as some of their performance characteristics.
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Affiliation(s)
- Grzegorz Chladek
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland.
| | - Jarosław Żmudzki
- Faculty of Mechanical Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, Gliwice 44-100, Poland.
| | - Jacek Kasperski
- Department of Prosthetic Dentistry, Medical University of Silesia, pl. Akademicki 17, Bytom 41-902, Poland.
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Soğancı G, Yazıcıoğlu H. Evaluation of Stress Distribution of Mini Dental Implant-Supported Overdentures in Complete Cleft Palate Models: A Three-Dimensional Finite Element Analysis Study. Cleft Palate Craniofac J 2014; 53:73-83. [PMID: 24919124 DOI: 10.1597/13-248] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE Mini dental implants could be an alternative treatment method for prosthetic treatment of edentulous cleft palate. The aim of this study was to analyze stress distribution around the cortical bone and different plans using a varied number of mini dental implants in edentulous unilateral complete cleft palates. MATERIALS AND METHODS Three edentulous maxillary models were modified to create unilateral complete cleft palates. Mini dental implants (2.4 × 15 mm) were located as two mini implants at the premolar region, four mini implants at the premolar and molar region, and six mini implants at the first premolar, second premolar, and first molar regions in the models, respectively. Mucosa, o-ring/ball attachments, and overdentures were simulated. Vertical and horizontal loads of 100 N were applied on both the right and left molar teeth of the overdenture for each model. Maximum and minimum principal stress values and the distribution at cortical bone around the implants and cleft palates were evaluated by finite element analysis. RESULTS Stress values under vertical loads were lower than values under horizontal loadings for all models. Stress values were found to be lower in the first model than in the second and third models. The highest stress values were found around implants in the second model. The unilateral feature of a complete cleft pattern affected the stress distribution. CONCLUSION Stresses occured mostly around implants when the overdenture was supported by six implants; however, the stress distribution around implants was low with two implants because of tissue support.
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