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At least 595 records · Page 33Linked to original sources
PubMed2005

Abutment load transfer by removable partial denture obturator frameworks in different acquired maxillary defects.

STATEMENT OF PROBLEM: Excessive stress on abutment teeth adjacent to a maxillary resection defect during loading of partial denture obturator frameworks may shorten the life of the teeth. PURPOSE: The aim of this study was to photoelastically compare the forces exerted on the supporting structures of abutment teeth in 3 differently sized surgical resections with removable partial denture designs used to restore such maxillectomy defects. MATERIAL AND METHODS: Composite photoelastic models were constructed of a human maxilla that had undergone each of 3 maxillectomies: partial, radical, and radical involving the contralateral premaxilla. The abutment teeth included all remaining anterior teeth, the first premolar, and second molar, except the radical maxillectomy, which included the contralateral premaxilla where all remaining teeth were used as abutment teeth. All abutment teeth were restored with complete metal crowns, and removable partial denture frameworks were fabricated. Loading zones were selected according to the resection, and a 10-lb load was applied at each load point. The resulting stresses were observed and recorded photographically in a circular polariscope. The 2 teeth adjacent to the resection were then splinted, and the loading regimens were repeated. RESULTS: Without splinting, loads closer to the defect produced lingual tipping of the teeth adjacent to the resection and a mesial tipping tendency of the second molar. The tipping effects were greatest in the model with the largest resection. Splinting reduced tipping of the teeth adjacent to the resection and produced more uniform stress around these 2 abutment tooth roots for all of the models. CONCLUSION: The results of this in vitro study suggest that splinting the 2 teeth adjacent to a resection defect improves stress distribution around the roots during loading. This could increase the clinical life of the abutment teeth.

Birefringence↗
PubMedDate not supplied

[Removable partial denture. A variation on the gauge used in design].

In this article we describe a modification of the gauge of the surveyor in such a way that we can measure the height of the retention arms' slide area over the abutment teeth, in order to obtain the same height in the reciprocal arm slide area to avoid the jiggle movements of the abutment teeth during the removal and insertion.

Dental Abutments↗
PubMed1989

Stabilized record base for maxillary removable partial denture obturator.

Accurate maxillomandibular jaw relation records are enhanced by a stabilized framework used to support the occlusal rim and recording medium. Stability of the framework is often lost on the defect side because of the size of the surgical defect and/or number of missing teeth. This article introduces a technique that uses a record base stabilized with a soft resilient material that permits easy removal and replacement of the framework on the altered master cast without damage.

Acrylic Resins↗
PubMed1984

The 'fixed' removable partial denture: report of case.

Careful monitoring of tissue that had been the site of three previous surgical procedures was necessary, but the patient needed a functional, esthetically acceptable prosthesis. The Andrews bridge was selected because it combines the stabilizing qualities of a fixed prosthesis with the accessibility to the tissues of a removable prosthesis. The recurring nature of the verrucous carcinoma along with extensive tissue loss were additional factors in selecting this appliance. The final results satisfied all the criteria. The patient has been seen at regular follow-up visits for 2 years since the last surgical procedure and there has been no clinical change in the previously involved tissue. The patient has tolerated the prosthesis well and is satisfied with her appearance.

Carcinoma, Papillary↗
PubMed1983

RPA clasp design for distal-extension removable partial dentures.

The RPA design has been discussed as an alternative to the RPI design. With its mesial rest and special retentive arm design, it gives essentially the same kind of tooth release that the RPI clasp provides. In addition, there are some advantages over the RPI design. The circumferential-type retentive arm is easier to grasp for removal of the prosthesis. The clasp is simple in design with few variations among patients and thus can be easily and consistently fabricated by dental laboratories. But most important, the circumferential retentive arm avoids the tissue problems around abutment teeth and allows the RPA clasp to be used in many situations where the RPI clasp is contraindicated.

Denture Design↗
PubMed1995

An evaluation of removable partial dentures: a retrospective study.

A 50% sample (N = 100) of all patients aged between 50-70 years at the time of treatment who received RPDs' were interviewed by telephone for 8-10 minutes. The questionnaires evaluated the subjects' denture experience, attitudes to dentures, and satisfaction with them. A large majority were satisfied with their RPD's but a higher proportion of women reported problems with mandibular RPD's. About one third of the group had not returned for recalls. Statistically significant relationships were found which suggested that subjects who were satisfied with their previous dentures were more likely to be satisfied with their replacements, and subjects who removed their RPD's to eat were likely to be dissatisfied with them.

Aged↗
PubMed1989

[The role of guide planes in the retention of removable partial dentures].

Modern understanding of the retention mechanism of partial denture assumes that the path of insertion and the path of displacement of denture form a definite angle. The denture is possible to insert in a given direction only after forming guide planes which, in the same time, possible take part in retention of denture. The aim of this work was to test the hypothesis that the preparation of guide planes and bending of models in the surveyor brings, the rigid parts of framework to increase the ability of denture to be kept on supporting tissue. The research was performed on the frameworks of denture which were of same design and models with and without preparation guide planes. Total of 60 framework removings from the vertical direction were made under the different conditions of the measurement, using universal electronic machines.

Denture Design↗
PubMed2004

The use of a rotational-path design for a mandibular removable partial denture.

The lack of display of anterior metal clasps is a primary advantage of the A-P rotational-path mandibular RPD design. A disadvantage of this design is that it relies on rigidmetal guiding plates for anterior retention and stability. Loss of retention may require procedures much more involved than the simple adjustment of conventional RPD clasps. Proper adherence to design, survey, fabrication, and adjustment procedures described by the authors should result in an esthetically pleasing and well-retained tooth-supported removable prosthesis. This article recommends the A-P rotational-path mandibular RPD as a treatment the clinician can use to restore multiple missing anterior teeth and satisfy a patient's financial, esthetic, and functional requirements.

Dental Clasps↗