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Oral and Maxillofacial Surgery Sep 2014The goal of implant treatment is the formation of a direct bone-implant interface contact. (Review)
Review
INTRODUCTION
The goal of implant treatment is the formation of a direct bone-implant interface contact.
PURPOSE
This study aimed to evaluate the possibilities of immediate loading treatment for edentulous patients rehabilitated with mandibular and maxillary overdentures.
MATERIAL AND METHODS
A literature review using the PubMed and BIREME databases between the periods of 1977 and 2011 was performed.
RESULTS
From an initial yield of 218 titles, 78 articles were selected for text analysis, finally resulting in 23 studies (16 prospective, 6 prospective randomized, and 1 prospective multicenter) that met the inclusion criteria.
CONCLUSION
The immediate loading protocol through which the implants are subjected to occlusal function immediately after their placement was introduced to overcome this limitation.
Topics: Bone-Implant Interface; Dental Prosthesis, Implant-Supported; Denture, Overlay; Humans; Immediate Dental Implant Loading; Jaw, Edentulous; Osseointegration; Survival Analysis
PubMed: 23828272
DOI: 10.1007/s10006-013-0421-6 -
Journal of Prosthodontics : Official... Oct 2022To compare the outcomes of prosthodontic treatment for subjects wearing a complete maxillary denture opposing a root-supported mandibular overdenture (RSO) or an... (Review)
Review
PURPOSE
To compare the outcomes of prosthodontic treatment for subjects wearing a complete maxillary denture opposing a root-supported mandibular overdenture (RSO) or an implant-supported mandibular overdenture (ISO).
METHODS
A literature search was performed in seven electronic databases: MEDLINE via PubMed interface, Embase, Cochrane Library, Cumulative Index to Nursing and Allied Health Literature, Scopus, Web of Science, and AgeLine. The search terms were developed by the primary investigators and the health sciences librarian, who then started with PubMed and adapted the original search strategy for the other databases. Included articles were those that compared the outcomes for mandibular RSOs and those with ISOs, for persons wearing a maxillary complete denture.
RESULTS
Seven articles were included in the review. There were limitations in this review because of small sample sizes, short study durations, and different methodologies. Also, no comparative studies were identified for clinically important outcomes, such as survival rates of abutments, prosthodontics/maintenance problems, and longitudinal cost of care. For prosthodontic complications, patient satisfaction, and ability to clean, no differences were reported. For oral tactile sensibility, RSOs presented significantly improved sensibility, whereas ISOs had higher maximum bite force capability, but the difference was not statistically significant, except when subjects had a cross-bite or a lingualized occlusion.
CONCLUSIONS
The results of this scoping review were not conclusive, except for maximum bite force, where ISOs seem to perform better than RSOs by the measured criteria. ISOs had higher survival rates than RSOs, and required less maintenance, but were more expensive. It was disappointing to find so few studies comparing these clinical treatment modalities, which suggests that either treatment may be clinically acceptable and depends upon a shared decision between patients and their dentists.
Topics: Humans; Denture, Overlay; Dental Prosthesis, Implant-Supported; Dental Implants; Denture, Complete; Bite Force; Mandible; Patient Satisfaction; Denture Retention
PubMed: 35187751
DOI: 10.1111/jopr.13498 -
The Journal of Prosthetic Dentistry Sep 2021The fracture incidence of implant-supported overdentures is more frequent in the area of attachment because of stress concentration and denture deformation in this area....
STATEMENT OF PROBLEM
The fracture incidence of implant-supported overdentures is more frequent in the area of attachment because of stress concentration and denture deformation in this area. How E-glass fiber reinforcement can address this problem is unclear.
PURPOSE
The purpose of this in vitro study was to evaluate the influence of unidirectional E-glass fiber reinforcement on the mid-line denture base strains of single implant-supported overdentures.
MATERIAL AND METHODS
An experimental acrylic resin cast was constructed with a single implant placed in the mid-line area and a ball attachment screwed to the implant. Twenty-four experimental overdentures were constructed and divided into 4 groups: group AP fabricated from autopolymerizing acrylic resin without fiber reinforcement, group APF fabricated from autopolymerizing acrylic resin with unidirectional E-glass fiber reinforcement running over the residual ridge and the ball matrix, group HP fabricated from heat-polymerized acrylic resin without fiber reinforcement, and group HPF fabricated from heat-polymerized acrylic resin with unidirectional E-glass fiber reinforcement running over the residual ridge and the ball matrix. A biaxial rosette strain gauge was attached to the incisor areas of each overdenture above the attachment level (Ch1, Ch2) and to a multichannel digital strain meter. A static vertical load of 100 N was applied to the first molar area bilaterally by using a universal testing device during strain measurement procedures. The differences in the mean strain and deflection values among the investigated groups were evaluated for statistical significance using 1-way analysis of variance (ANOVA) with the Tukey post hoc multiple comparison (α=.05).
RESULTS
The type of acrylic resin did not have a statistically significant effect on the mean strain values among groups (P=.350), while the reinforcement did significantly affect them (P<.001). The interaction between reinforcement and acrylic resin was not statistically significant (P=.552). Both strain gauge channels in group APF and group HPF recorded significantly lower strain values by almost 50% than those of group AP and group HP (P<.05).
CONCLUSIONS
Unidirectional E-glass fiber reinforcement placed over the residual ridge and implant attachment significantly reduced denture base strains and deformation of single implant-supported overdentures.
Topics: Dental Implants; Dental Prosthesis, Implant-Supported; Dental Stress Analysis; Denture Bases; Denture, Overlay; Glass; Materials Testing; Stress, Mechanical
PubMed: 32958304
DOI: 10.1016/j.prosdent.2020.05.018 -
Compendium of Continuing Education in... Feb 2022Patients who require transitioning from natural teeth to dental implants present a unique challenge to clinicians. When evaluating decisionmaking processes, clinicians...
Patients who require transitioning from natural teeth to dental implants present a unique challenge to clinicians. When evaluating decisionmaking processes, clinicians must determine the best restorative treatment options for the patient. Fixed and removable treatment options may both become ideal possibilities for a patient, depending on the patient's clinical presentation. Patients who are interested in fixed options but may not have the financial resources to be able to afford this more expensive alternative often may choose removable overdenture solutions. This article discusses ideal treatment planning strategies for patients interested in dual-arch overdenture restorations and reviews a clinical case describing this treatment.
Topics: Clinical Protocols; Dental Implants; Dental Prosthesis, Implant-Supported; Denture, Overlay; Humans; Patient Care Planning
PubMed: 35077188
DOI: No ID Found -
The Journal of Contemporary Dental... Jul 2022The purpose of the study was to evaluate the stress on the implant and to assess the denture displacement for locator and bar and clip attachment types in...
AIM
The purpose of the study was to evaluate the stress on the implant and to assess the denture displacement for locator and bar and clip attachment types in implant-assisted obturators.
MATERIALS AND METHODS
A maxillary edentulous experimental model with a maxillectomy defect was made along with an opposing edentulous mandibular model with self-cure acrylic. Two endosseous implants were placed in the maxillary model. Corresponding obturator complete denture was fabricated for the maxillary model and a complete denture for the mandibular. The attachments were positioned on the implants in maxillary model, and their sleeve/clip was placed on intaglio surface of the dentures. The mounted articulator was placed on a loading apparatus, and force was incrementally applied to it. The strain and displacement for both the attachment types were measured and compared using Digital Image Correlation (DIC).
RESULTS
Locator attachment showed the least stress and minimal displacement as compared to bar and clip attachment.
CONCLUSION
The stresses around the implants and displacement of the obturator are affected by the attachment type used. It was found that bar and clip (splinted) showed the maximum stresses around the implant and maximum denture displacement. Locator attachment is the better choice over bar and clip because of its additional retentive features.
CLINICAL SIGNIFICANCE
The advantage of using DIC over the conventional strain gauge analysis is that a full-field data of displacement and strain can be obtained instead of getting a mean value on the small surface where the strain gauge is positioned.
Topics: Humans; Denture, Overlay; Denture Retention; Dental Prosthesis, Implant-Supported; Mouth, Edentulous
PubMed: 36440515
DOI: No ID Found -
Journal of Prosthodontic Research Oct 2021Purpose To clarify the rate of posterior residual ridge resorption (PRRR) in different denture treatments and the factors that can affect PRRR.Study selection A...
Purpose To clarify the rate of posterior residual ridge resorption (PRRR) in different denture treatments and the factors that can affect PRRR.Study selection A bibliographical electronic search was conducted on MeSH, Web of Science, and Ovid databases. Hand searching was also conducted. Longitudinal studies recording the average rate of PRRR in the mandible were included. The effect size was calculated based on the mean rate of PRRR with standard deviation and group size. The random-effects analysis was used to perform meta-analyses across qualified studies.Results A total of 2245 eligible studies were collected from the MeSH, Web of Science, and Ovid databases and hand searching. In the end, 19 studies met the inclusion criteria and were extracted. The average rate of PRRR in different mandibular denture treatments was assessed in this systematic review. The mean combined effect size was -1.05 ± 0.5 (95% confidence interval [CI]: -3.18-1.08) between four-implant overdentures and two-implant overdentures. The combined effect size was -0.01 ± 0.22 (95% CI: -0.93-0.82) between complete dentures and two-implant overdentures. Body mass index, number of dentures used, denture wearing habit, impression technique, artificial tooth material, and peri-implant bone resorption showed no significant effect on the rate of PRRR. Gender, denture material, and relining frequency showed a significant effect on the rate of PRRR.Conclusions This review summarized different average rates of PRRR in mandibular denture treatments. Meta-analyses have reported that four-implant overdenture treatments can lower the rate of PRRR compared to two-implant overdenture treatments. However, there was no significant difference in the treatment effect between the complete denture and two-implant overdenture treatments.
Topics: Bone Resorption; Dental Prosthesis, Implant-Supported; Denture, Complete; Denture, Overlay; Humans; Mandible
PubMed: 33281173
DOI: 10.2186/jpr.JPR_D_20_00075 -
BMJ Open Aug 2016The need for denture treatment in public health will increase as the population ages. However, the impact of dentures on nutrition, particularly overdenture treatment,... (Comparative Study)
Comparative Study Meta-Analysis Review
OBJECTIVES
The need for denture treatment in public health will increase as the population ages. However, the impact of dentures on nutrition, particularly overdenture treatment, remains unclear although the physical and psychological effects are known. We investigated whether treatment with a mandibular implant supported overdenture improves nutrient intake and markers of nutritional status better than a conventional complete denture in edentulous patients.
DESIGN
Systematic review and meta-analysis.
METHODS
Medline, EMBASE and the Cochrane Central Register of Controlled Trials were searched for eligible studies published up to April 2016. We included studies which compared the treatment effect of an overdenture to conventional denture on nutrition, in which primary outcomes included changes in intake of macronutrients and/or micronutrients and/or indicators of nutritional status. Two reviewers independently evaluated eligible studies and assessed the risk of bias. We used a fixed effects model to estimate the weighted mean difference (WMD) and 95% CI for change in body mass index (BMI), albumin and serum vitamin B12 between overdenture and conventional denture 6 months after treatment.
RESULTS
Of 108 eligible studies, 8 studies involving 901 participants were included in the narrative appraisal. Four studies reported changes in markers of nutritional status and nutrient intake after treatment with a prosthetic, regardless of type. In a meta-analysis of 322 participants aged 65 years or older from three studies, pooled analysis suggested no significant difference in change in BMI between an overdenture and conventional denture 6 months after treatment (WMD=-0.18 kg/m(2) (95% CI -0.52 to 0.16)), and no significant difference in change in albumin or vitamin B12 between the two treatments.
CONCLUSIONS
The modifying effect of overdenture treatment on nutritional status might be limited. Further studies are needed to evaluate the effectiveness and efficacy of denture treatments.
Topics: Dental Prosthesis, Implant-Supported; Denture, Complete; Denture, Overlay; Diet; Humans; Mouth, Edentulous; Nutritional Status; Patient Satisfaction; Randomized Controlled Trials as Topic; Serum Albumin, Human; Vitamin B 12
PubMed: 27489156
DOI: 10.1136/bmjopen-2016-011799 -
Journal of Prosthodontics : Official... Dec 2021This review aimed to identify the reported intraoral scanning applications in fabricating different types of removable prostheses in the field of prosthodontics. (Review)
Review
PURPOSE
This review aimed to identify the reported intraoral scanning applications in fabricating different types of removable prostheses in the field of prosthodontics.
METHODS
A comprehensive electronic search was performed using the PubMed and MEDLINE databases. This review included in vitro studies and clinical reports published between January 2013 and March 2021. The main keywords were as follows: intraoral scanning, digital impression, computerized digital impression, removable prosthesis, chairside computer-aided design/computer-assisted manufacturing, digital complete denture, digital immediate complete denture, digital interim complete denture, digital removable partial denture, digital removable overdenture, digital obturator, digital occlusal splints, and digital maxillofacial prostheses.
RESULTS
In total, 33 papers (22 clinical reports, 8 papers focused on dental techniques, and 3 clinical studies) were included in the final analysis.
CONCLUSIONS
The efficiency of using intraoral scanning in the field of removable prosthodontics was documented. However, there is a need for more clinical studies to identify intraoral scanning-usage protocols and to yield reliable and valid data.
Topics: Computer-Aided Design; Dental Impression Technique; Denture, Overlay; Denture, Partial, Removable; Prosthodontics
PubMed: 34043266
DOI: 10.1111/jopr.13395 -
The International Journal of Oral &... 2016The aim of this systematic review is to report on the current knowledge regarding patient satisfaction as a primary outcome for maxillary complete denture therapy. We... (Review)
Review
PURPOSE
The aim of this systematic review is to report on the current knowledge regarding patient satisfaction as a primary outcome for maxillary complete denture therapy. We asked, "For the maxillary edentulous patient treated using maxillary dentures, what are the patient-based outcomes regarding quality of life and treatment satisfaction."
MATERIALS AND METHODS
An electronic search of publications up to March 2014 was established using four databases: PubMed, Web of Science, Scopus, and Embase. To meet the ultimate goal of establishing clinical guidelines based on available information, prospective comparative studies, cohort prospective studies, and retrospective studies on more than 10 subjects were included. The electronic search identified 4,530 articles that were evaluated at the title, abstract, and article level to include 31 articles of interest. The patient-based outcomes and satisfaction data included were examined and reported.
RESULTS
The studies included 5,485 participants. Of these, 2,685 were identified as wearing maxillary complete dentures. Reported mean ages ranged from 59.7 to 73.6 years. A systematic review indicated that the provision of new maxillary complete dentures for edentulous patients results in improved self-reported satisfaction and oral health-related quality of life. The included reports, while providing evidence that complete denture satisfaction of participants and new dentures improve self-reported outcomes, did not include variables that influence these positive outcomes.
CONCLUSION
A broad range of evidence supports the use of complete dentures for rehabilitation of the edentulous maxilla. When considering treatment of the edentulous maxilla, the expectations of patients for esthetic and phonetic (social) rehabilitation are high and can be met using maxillary complete dentures as the mode of prosthetic rehabilitation. Patients dissatisfied with new complete dentures may be referred for dental implant therapies involving fixed or removable prostheses.
Topics: Denture Retention; Denture, Complete; Denture, Overlay; Humans; Maxilla; Mouth, Edentulous; Oral Health; Outcome Assessment, Health Care; Patient Satisfaction; Quality of Life
PubMed: 27228248
DOI: 10.11607/jomi.16suppl.g5.1 -
Journal of Prosthodontics : Official... Feb 2019To relate the principal stress, strain, and total deformation in the premaxilla region beneath a complete denture to the pattern of premaxilla bone resorption when...
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.
Topics: Aged; Alveolar Bone Loss; Bone Resorption; Dental Prosthesis, Implant-Supported; Dental Stress Analysis; Denture, Complete; Denture, Overlay; Finite Element Analysis; Humans; Male; Maxilla; Models, Dental
PubMed: 30044033
DOI: 10.1111/jopr.12954