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Hua Xi Kou Qiang Yi Xue Za Zhi = Huaxi... Feb 2018The occlusion design of dental implants is related to the growing popularity of dental implantology. This paper discusses the occlusion design of the edentulous implant...
The occlusion design of dental implants is related to the growing popularity of dental implantology. This paper discusses the occlusion design of the edentulous implant prosthesis and the relationships between stress change and the alveolar bone and between the occlusal design and implantation complications. The horizontal relationship of condyle, the design of the canine-guided occlusion, and the similarities and differences between the dental implant and the natural teeth on biteforce response are mentioned.
Topics: Alveolar Bone Loss; Dental Implantation, Endosseous; Dental Implants; Dental Occlusion; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Humans; Jaw, Edentulous; Jaw, Edentulous, Partially
PubMed: 29594987
DOI: 10.7518/hxkq.2018.01.001 -
Journal of the Irish Dental Association 2015The use of dental implants in replacing missing teeth is an integral part of restorative dental treatment. Use of conventional complete dentures is associated with... (Review)
Review
The use of dental implants in replacing missing teeth is an integral part of restorative dental treatment. Use of conventional complete dentures is associated with several problems such as lack of denture stability, support and retention. However, when mandibular complete dentures were used with two or more implants, an improvement in the patients' psychological and social well-being could be seen. There is general consensus that removable implant-supported overdentures (RISOs) with two implants should be considered as the first-choice standard of care for an edentulous mandible. This treatment option necessitates the use of attachment systems that connect the complete denture to the implant. Nevertheless, each attachment system has its inherent advantages and disadvantages, which should be considered when choosing a system. The first part of this article provides an overview on options available to restore the mandibular edentulous arch with dental implants. Different types of attachment systems, their features and drawbacks are also reviewed.
Topics: Dental Implants; Dental Prosthesis, Implant-Supported; Denture Bases; Denture Design; Denture Retention; Denture, Complete, Lower; Denture, Overlay; Humans; Jaw, Edentulous; Mandible
PubMed: 26281708
DOI: No ID Found -
The Journal of Prosthetic Dentistry Jul 2020Differences between ceramic and metal-ceramic implant-supported fixed dental prostheses are unclear. (Meta-Analysis)
Meta-Analysis
Comparison of technical, biological, and esthetic parameters of ceramic and metal-ceramic implant-supported fixed dental prostheses: A systematic review and meta-analysis.
STATEMENT OF PROBLEM
Differences between ceramic and metal-ceramic implant-supported fixed dental prostheses are unclear.
PURPOSE
The purpose of this systematic review and meta-analysis was to compare the technical, biological, and esthetic complication rates of implant-supported ceramic and metal-ceramic restorations.
MATERIAL AND METHODS
Six databases were searched to identify randomized controlled clinical trials (RCTs) and prospective and retrospective cohort studies of implant-supported fixed dental prostheses. The survival rate, marginal adaptation, marginal bone loss, pocket probing depth, crown color match, and mucosal discoloration of ceramic and metal-ceramic single crowns were assessed. For implant-supported fixed partial dental prostheses (FPDPs), only the survival rate was assessed. The risk of bias was assessed for individual studies and across studies by using the Cochrane guidelines, Newcastle-Ottawa scale, and funnel plots.
RESULTS
Twenty studies were included in this meta-analysis. Ceramic and metal-ceramic implant-supported single crowns were compared in terms of the survival rate (OR=0.84 [0.32, 2.23], P=.730), marginal adaptation (mean difference [MD]=0.33 [0.19, 0.47], P<.001), marginal bone loss (MD=-0.03 [-0.07, 0.02], P=.260), pocket probing depth (MD=-0.07 [-0.14, 0.00], P=.060), crown color match (MD=-0.15 [-0.29, 0.00], P=.040), and mucosal discoloration (standardized mean difference [SMD]=-0.14 [-0.86, 0.58], P=.710). The survival rate of ceramic and metal-ceramic implant-supported FPDPs was also compared (odds ratio [OR]=1.92 [1.26, 2.94], P=.003).
CONCLUSIONS
No significant difference was observed between ceramic and metal-ceramic implant-supported single crowns in terms of the survival rate, marginal bone loss, pocket probing depth, or mucosal discoloration. However, metal-ceramic single crowns had better marginal adaptation and poorer crown color match than did ceramic single crowns. In addition, current evidence indicates that metal-ceramic implant-supported FPDPs might have a higher survival rate than ceramic FPDPs.
Topics: Ceramics; Crowns; Dental Implants; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Esthetics, Dental; Metals
PubMed: 31753461
DOI: 10.1016/j.prosdent.2019.07.008 -
The Journal of Contemporary Dental... May 2020To introduce an angled abutment transfer jig that splints abutments securely together to facilitate easy and quick orientation.
AIM
To introduce an angled abutment transfer jig that splints abutments securely together to facilitate easy and quick orientation.
BACKGROUND
Transferring angled abutments from cast to patients' mouth could be tasking and time-consuming. Transfer jigs are often used to facilitate orientation of abutments into implant fixtures. However, with the available jigs, abutments could move out of place and thus pose a hassle in repositioning.
TECHNIQUE
This technical report introduces an angled abutment transfer jig that consists of two impression copings screwed onto angled abutments which are splinted together with red acrylic resin. Access to abutment screws is feasible through slots created in the impression copings.
CONCLUSION
The introduced jig is rigid and thus ensures very accurate and easy transfer of abutments into implants followed by accurate prosthesis seating.
CLINICAL SIGNIFICANCE
This transfer jig design allows clinicians to transfer the orientation of angled abutments from cast to patients' mouth with optimal speed and precision.
Topics: Acrylic Resins; Dental Abutments; Dental Implants; Dental Impression Technique; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Humans; Models, Dental
PubMed: 32690846
DOI: No ID Found -
The Journal of Oral Implantology Dec 2014Computer-aided design and computer-aided manufacturing (CAD/CAM) is a strongly emerging prosthesis fabrication method for implant dentistry. Currently, CAD/CAM allows... (Review)
Review
Computer-aided design and computer-aided manufacturing (CAD/CAM) is a strongly emerging prosthesis fabrication method for implant dentistry. Currently, CAD/CAM allows the construction of implant frameworks from different materials. This review evaluates the literature pertaining to the precision fit of fixed implant frameworks fabricated by CAD/CAM. Following a comprehensive electronic search through PubMed (MEDLINE), 14 relevant articles were identified. The results indicate that the precision fit of CAD/CAM frameworks exceeded the fit of the 1-piece cast frameworks and laser-welded frameworks. A similar fit was observed for CAD/CAM frameworks and bonding of the framework body to prefabricated cylinders. The influence of CAD/CAM materials on the fit of a framework is minimal.
Topics: Computer-Aided Design; Dental Implants; Dental Marginal Adaptation; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Denture Design; Humans; Surface Properties
PubMed: 25506666
DOI: 10.1563/AAID-JOI-D-12-00117 -
Journal of Prosthodontic Research Oct 2017The aim of this study was to evaluate the fit and mechanical stability of conventional versus passive fitting 3-unit fixed dental prosthesis (FDP) screw-retained on...
PURPOSE
The aim of this study was to evaluate the fit and mechanical stability of conventional versus passive fitting 3-unit fixed dental prosthesis (FDP) screw-retained on implants.
METHODS
Twenty acrylic models, each with two embedded implants, were fabricated and functioned as patient-models. Impressions were taken and 20 all-ceramic FDPs were pre-fabricated on the plaster casts. Respectively 10 FDPs were fixed on the plaster casts (group 1) and on the patient-models for passive fitting (group 2). The fit of each FDP was checked on the patient-model by means of visual control (grades 1-10) and microscopic examination. Furthermore, specimens were artificially aged for possible prosthodontic failures, followed by a fracture strength test.
RESULTS
Group 2 [1.4 (±0.3)] showed significantly (p<0.001) better results in the visual examination of the marginal fit compared to group 1 [6.3 (±2.4)]. The microscopic marginal misfit was 160μm (±80μm) at the abutment margin and 150μm (±80μm) at the axial wall of the abutment for group 1, respectively, 0μm and 0μm up to 17μm for group 2 (p<0.001). No failure of the FDPs could be observed during artificial aging in both groups. The fracture load showed no significant difference (p=0.60) between group 1 [2583N (±664N)] and group 2 [2465N (±238N)].
CONCLUSIONS
Visual and microscopic examination detected huge differences in marginal fit between groups 1 and 2. However, no statistically verifiable differences could be detected in long-term stability of implant-supported FDPs irrespective of the fit.
Topics: Ceramics; Dental Abutments; Dental Implant-Abutment Design; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Dental Stress Analysis; Models, Dental
PubMed: 28188110
DOI: 10.1016/j.jpor.2016.12.011 -
Dentistry Today Aug 2014
Topics: Dental Implantation, Endosseous; Dental Implants; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Humans; Patient Care Planning
PubMed: 25174190
DOI: No ID Found -
British Dental Journal Jul 2019
Topics: Dental Implants; Dental Prosthesis, Implant-Supported; Denture, Partial, Fixed; Tooth
PubMed: 31300780
DOI: 10.1038/s41415-019-0545-7 -
The International Journal of... 2022In recent years, numerous new dental materials have been introduced as alternatives to metal-ceramics for restorations on teeth and implants. This position paper...
In recent years, numerous new dental materials have been introduced as alternatives to metal-ceramics for restorations on teeth and implants. This position paper presents the current evidence and respective clinical recommendations of the European Association for Osseointegration (EAO), one of the scientific partners of the International Journal of Prosthodontics, on material selection for single crowns (SCs) and multiple-unit implant-supported fixed dental prostheses (FDPs). Metal-ceramic restorations can be utilized in most clinical indications and are preferred to ceramic restorations in incidences such as long clinical implant crowns; cantilever implant restorations where one implant is supporting two crowns; implant-supported FDPs with extension units extending more than 7 to 8 mm (premolar size); implant-supported FDPs with more than two pontics; and implant-supported FDPs with small connector diameters due to limited intraocclusal space. Veneered or monolithic zirconia-ceramic and veneered or monolithic reinforced glass-ceramic implant-supported SCs are indicated for most SC cases in both the anterior and posterior areas. Today, implant-supported zirconia-ceramic FDPs that are conventionally veneered cannot be considered the material of first priority due to the pronounced risk for fracture of the framework and catastrophic fracture of the veneering material. Monolithic zirconia FDPs are a promising alternative to veneered implant-supported zirconia-ceramic FDPs. The mechanical stability of the translucent and shaded zirconia differs significantly between the grades of translucency. This must always be considered when clinical indications are recommended. As this specific area of prosthodontics is evolving fast, numerous studies evaluating different material options in implant prosthodontics are currently performed worldwide, and future consensus meetings will refine the present recommendations. The EAO will therefore regularly publish updated position papers on relevant topics.
Topics: Ceramics; Crowns; Dental Implants; Dental Porcelain; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Denture, Partial, Fixed; Osseointegration; Zirconium
PubMed: 35230351
DOI: 10.11607/ijp.8013 -
European Journal of Oral Implantology 2018To present recent data regarding prosthetic complications with implant prostheses and crowns as well as compare this data with data presented in a 2003 publication.
AIM
To present recent data regarding prosthetic complications with implant prostheses and crowns as well as compare this data with data presented in a 2003 publication.
MATERIAL AND METHODS
An electronic Medline (PubMed) with MeSH terms search was performed, focussing on clinical studies that reported data on prosthetic complications associated with implant fixed complete dentures, implant overdentures, implant fixed partial dentures, and implant single crowns.
RESULTS
There were nine prosthetic complications reported with implant fixed complete dentures, 17 with implant overdentures, four with implant fixed partial dentures, and six with implant single crowns. The greatest number of complications and the largest incidence of percentages occurred with implant overdentures. The lowest incidence percentages were recorded for implant single crowns. These findings are in agreement with the previous 2003 publication. It is of interest to note that some of the complications reported previously were not reported in this review, and some complications reported in this review were not listed in the 2003 publication, thereby limiting the number of direct comparisons between this paper and the earlier report. A surprising finding was that some complications associated with implant overdentures from the current data exceeded the incidence in 2003 (reactivation of the retentive attachment; mucosal hyperplasia; and the need for overdenture relines).
CONCLUSIONS
Implant overdentures are associated with more complications than implant fixed complete dentures, implant fixed partial dentures, and implant single crowns. The lowest incidence of complications was reported with implant single crowns. The most common complication reported with implant fixed complete dentures was denture tooth fracture. The most common complication associated with implant overdentures was the need for adjustments. Porcelain veneer fracture/chipping was the most common complication identified in the studies of implant fixed partial dentures. The most common complication reported with implant single crowns was abutment screw loosening.
Topics: Crowns; Dental Implants; Dental Materials; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported; Dental Restoration Failure; Denture, Overlay; Denture, Partial, Fixed; Humans
PubMed: 30109297
DOI: No ID Found