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At least 595 records · Page 33Linked to original sources
PubMed1993

[Influences of cusp inclination on stability and function of removable partial dentures].

The influences of cusp inclination on the stability and the function of removable partial dentures were evaluated on 5 subjects with the maxillary unilateral free-end saddle. An experimental removable partial denture was made with six pressure sensors fixed on to the basal surface. The artificial teeth were replaceable by attachment. Several metal maxillary canine risers were made to change the inclination of the lateral gliding movement. During lateral gliding, the canine risers and the artificial teeth were contacted with the opposing mandibular teeth simultaneously. The pressures exerted upon the supporting tissues and the mandibular movements were measured during mastication with each artificial teeth of different cusp inclination. The results were as follows: 1. The steeper cusp caused the reduction of the peak pressures as well as the total pressures in most measuring spots. 2. The time differences of the first and the peak pressure detection between 6 measuring spots extended as the cusp became steeper. 3. The mandibular movements were influenced by the cusp inclination especially in the subjects with tear-drop type masticatory strokes. 4. It was suggested that the moderate cusp of artificial teeth contributed to the denture stability in function.

Adult↗
PubMed2002

Veneering technique for a Ti-6Al-7Nb framework used in a resin-bonded fixed partial denture with a highly filled indirect composite.

This article presents a veneering technique for fixed partial denture frameworks made from a Ti-6Al-7Nb alloy. The fixed partial denture framework was prepared with a magnesia-based mold material and a centrifugal casting machine. An esthetic veneer was fabricated with a highly filled dual-polymerized composite material and a metal-conditioning agent. This technique can be applied as a standardized veneering procedure for the titanium alloy, for which porcelain fusing is currently difficult.

Aged↗
PubMed1993

On functional strain in some fixed and removable partial dentures. An experimental in vitro study.

An 11-unit fixed maxillary reconstruction with 2 bilateral cantilever pontics in combination with a removable partial denture (RPD) with a palatal bar was fabricated. The RPD was retained to the fixed reconstruction with precision attachments. A laboratory model system was constructed in such a manner that the mechanical properties of the biologic supporting tissues involved were simulated by artificial materials. By means of a strain-gauge technique the deformation was studied in both the fixed and the removable partial denture. In different laboratory loading situations with and without the RPD the deformation in the fixed dental appliance was more extensive and more complex when the RPD was excluded.

Dental Stress Analysis↗
PubMed1991

Fixed partial dentures supported by periodontally compromised teeth.

This study tested the effect of fixed partial dentures on hypermobile abutment teeth with substantially reduced levels of periodontal attachment. One abutment tooth and one control (nonabutment) tooth of the same type and periodontal condition were selected for study in adults. Treatment consisted of periodontal therapy and a 3- or 4-unit fixed partial denture, after which all subjects were placed on a quarterly maintenance schedule. No differences were found between the mean baseline and 24-month measures for all dependent variables at test or control sites.

Adult↗
PubMed1976

Quantitative changes in dental plaque formation related to removable partial dentures.

Plaque formation on forty-four teeth acting as abutments for removable partial dentures was studied while the patients were wearing their dentures and while they were not. The amount of plaque was assessed according to Quigley & Hein (1962), modified by Kardel & Bay (1967). In addition, that formed occlusally was evaluated by an occlusal plaque scoring index designed for the present study. It was found that the wearing of partial dentures increased the formation of plaque on all tooth surfaces under investigation.

Adult↗
PubMed2006

Replacement of missing posterior teeth with an all-ceramic inlay-retained fixed partial denture: a case report.

Adhesively luted all-ceramic inlay-retained fixed partial dentures can be a clinical alternative for the replacement of missing posterior teeth in certain situations. This type of restoration allows satisfactory esthetics and reduced tooth preparation compared to a conventional metal-ceramic fixed restoration. This case report describes the use of an inlay-retained fixed partial denture as a conservative alternative for the replacement of missing posterior teeth.

Adult↗
PubMed1994

Evolution of removable partial denture design.

This is a brief overview of the progress of design philosophies of removable partial dentures. It begins in 1711 with the first published description of a removable partial denture prosthesis and continues, with discussion of the most significant discoveries, through 1990.

Dental Clasps↗
PubMed1996

Resin-bonded fixed partial dentures: a review of three decades of progress.

The resin-bonded fixed partial denture has undergone significant changes in design, materials and tooth preparation since its development in 1973. The selection of resin cement and micromechanical retention have closely paralleled alloy-resin-bonding research. Despite impressive in vitro research results, only 74 percent of the prostheses are still functional at the end of four years. Understanding the limitations, indications and design of resin-bonded fixed partial dentures will result in improved longevity and patient satisfaction.

Dental Alloys↗
PubMedDate not supplied

Artificial crowns and fixed partial dentures 18 to 23 years after placement.

Patients receiving artificial crowns and fixed partial dentures at a prosthodontic clinic were examined 18 to 23 years after treatment. The long-term results were good, especially for the metal ceramic restorations: 79% remained unchanged and only 3% had been removed. The success rate for the gold-resin restorations was less favorable: 43% remained unchanged and 33% had been removed. The use of one cantilever extension unit had not negatively influenced the results for the fixed partial dentures. Generally, those abutment teeth that had been removed during the observation period had received previous endodontic treatment before restorations had been placed. Endodontic complications on abutment teeth were more frequent in the mandible than in the maxillae.

Adult↗
PubMed1985

The tilted posterior tooth. Part III: Abutment for a fixed partial denture.

The problem of achieving a common path of insertion for a fixed partial denture when a tilted posterior abutment is involved can usually be solved by well planned tooth preparation in conjunction at times with intentional endodontic therapy. When tooth preparation alone cannot solve the problem, the mechanical solutions of the locked attachment and the telescopic retainer are available and must be considered. Other problems involved with the tilted abutment, adjacent tilted teeth, space reduction, supraversion of the antagonist, and the problem of a long-span fixed partial denture were discussed.

Bicuspid↗
PubMed2002

Fracture resistance of pressable glass-ceramic fixed partial dentures.

The aim of the present study was to evaluate the mechanical strength of the Empress2 system, which is based on the use of a high-strength glass--ceramic core of lithium disilicate, and the fracture resistance of fixed partial dentures fabricated with this material. To evaluate mechanical strength, four types of ceramic materials were tested for four-point flexural strength and diametral tensile strength: Empress2 core material, Empress2 layering porcelain, conventional Empress material and Dicor. Then, using Empress2, conventional Empress and Dicor, actual clinical type anterior fixed partial dentures were fabricated for fracture testing. The results showed that the Empress2 core material, at 329 MPa, has more than twice the flexural strength of conventional materials and at 271 MPa, more than four times the diametral tensile strength of conventional materials. Furthermore, fixed partial dentures fabricated with Empress2 had a fracture resistance of 1424 N. That is, they were more than twice as fracture resistant as fixed partial dentures made with conventional materials.

Ceramics↗
PubMedDate not supplied

An implant-supported, screw-retained, provisional fixed partial denture for pontic site enhancement.

Due to remodeling of the edentulous ridge following tooth extraction, clinicians and dental technicians face a variety of challenges when attempting to deliver an aesthetic fixed partial denture for the anterior maxilla. An implant-supported, screw-retained fixed partial denture provisional restoration can be utilized in order to manipulate the pontic site with predictable success. This technique can create the illusion of pontics emerging from the soft tissue, creating a natural-looking effect for seating of the definitive restoration.

Dental Abutments↗
PubMed2002

Removable partial denture design: a study of a selected population in Saudi Arabia.

Determination of the incidence of various classes of removable partial dentures (RPDs) including their designs and their comparison with previous studies provide clinically useful information for dental training and continuing education. The purpose of this study is to determine the pattern of partial edentulism, the major connector, clasping, and design of 740 cobalt chromium RPD frameworks constructed for a selected population in Saudi Arabia. RPD framework design information and patient personal data were obtained from the work authorization form and the dental records respectively. The relationship among age, sex, nationality, and various Kennedy classes of the RPDs was determined by chi-square statistical analysis. Results indicate that Kennedy Class III removable partial dentures were the most frequently constructed. Although gender had no significant relationship, age and nationality had statistically significant relationship with the distribution of various Kennedy classes of removable partial dentures. Lingual bars and anterior posterior palatal straps were the most commonly used mandibular and maxillary major connectors. Lingual and palatal plates, however, were more frequently used than any major connectors for distal extension RPDs. Comparison with previous findings confirms the established variation in designing RPDs. The distribution of partially edentulousness revealed the influence of the general pattern of tooth loss, which could be modified by patient's demands and socio-economic status. Practitioners need to avail themselves fully of basic RPD design principles concerning the most commonly encountered classes of RPDs.

Adolescent↗
PubMed1982

Rotational path removable partial denture design.

A detailed description of a rotational path of insertion design for removable partial dentures has been presented. By minimizing the use of conventional clasps, this technique offers some advantages. Rotational path designs may minimize adverse periodontal response to a removable partial denture by reducing plaque accumulation and may be applied in esthetically demanding situations. The design concept involves the use of rigid retentive components that gain access to undercut areas through a rotational path of insertion. These rigid components satisfy the basic requirements of conventional direct retained design.

Denture Design↗
PubMed2006

[Computer aided design and computer aided manufacture of sacrificial pattern of removable partial denture framework].

OBJECTIVE: To introduce a method applied in computer aided design and computer aided manufacture (CAD-CAM) of removable partial denture framework for rehabilitating edentulous arch of Kennedy Class II and found a basis for this project. METHODS: Point cloud data of dental stone model was obtained by laser scanning. The following processes were made: drawing framework outline on the reconstructed triangle mesh model, picking up and processing its inner side data as the data of tissue surface, shelling it for 3-D model of framework, and transferring the data to rapid prototyping equipment for manufacture. RESULTS: 3-D model of the removable partial denture framework was preliminarily accomplished. The resin framework used as a sacrificial pattern was manufactured with the rapid prototyping equipment. The fit between resin framework and plaster model was good. CONCLUSIONS: This method, as an integrated procedure including data acquisition, 3-D computer modeling and fabrication by rapid prototyping, is feasible to implement CAD-CAM of removable partial denture framework.

Computer-Aided Design↗
PubMed1992

Parallel bonded cast attachments for removable partial dentures.

The original design of a semi-precision extra-coronal attachment for partial dentures is illustrated, and its fabrication in a cast non-precious bondable alloy is described. A step-by-step method is also described of bonding multiple attachments in parallel for the retention and support of removable partial dentures. Clinical cases are illustrated. The results of trials indicate that the method is clinically viable and, in selected cases, appears to offer distinct advantages over existing retention systems.

Chromium Alloys↗