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At least 667 records · Page 37Linked to original sources
PubMed1976

Treatment planning for fixed and removable partial dentures: a periodontal view.

1. Chronic occlusal trauma of partial denture abutments may be observed in radiographs before other clinical symptoms are noticed. 2. Evaluation methods can determine when teeth are unsuitable to serve as abutments, but these methods may not be reliable to predict the capacity for some essentially normal teeth to accept additional stresses. 3. Whenever a potential abutment is tilted so that axial loading is questionable, no restoration should be made.

Dental Abutments↗
PubMed1977

Subjective reactions to major connector designs for removable partial dentures.

Simlated partial denture frameworks were fabricated for 12 dentists (subjects) who had intact dentitions and who had intact dentitions and who had had no previous experience in wearing partial dentures. The outline of the major connectors was modified during a 1 week interval. The data obtained from questionnaires brought about the following conclusions: 1. Preferences in maxillary major connector design were as follows: (1) broad posterior strap, (2) anteroposterior bar, (3) ring-type design, and (4) full palatal coverage. 2. The mandibular lingual bar was chosen over the lingual plate by a 3:1 ratio. 3. The natural palatal metal finish was perferred to the highly polished finish. 4. Metal borders parallel to tongue movement were better tolerated than those lying transverse. 5. Thickening of the posterior strap to permit its narrowing was not clinically feasible. 6. In general, patients adapted best to major connectors that covered the least amount of soft tissues.

Chromium↗
PubMed1979

Semiprecision rest system for distal-extension removable partial dentures.

The history of the nonlocking type of intracoronal semiprecision rest has been traced from its origins with Neurohr in 1930, up to its present use as the Thompson dowel rest. The advantages of the use of this deep rest design and the clasp arm design for primary retention have been discussed. The Blatterfein modification of the lingual clasp arm has been introduced to overcome the problems of breakage and lack of stabilization which are present with the Thompson, Van Dam, and Wands designs.

Dental Abutments↗
PubMed1980

Effect of a resilient layer in a removable partial denture base on stress distribution to the mandible.

The results of two-dimensional finite element analyses of a mandible indicate that a resilient layer within a denture base can act as an effective "shock absorber" and may slow down ridge resorption. Finite element models of similar types can easily be used to further investigate various applications of resilient layers. The magnitudes and distributions of stresses generated in the mandible by force application to two types of a distal extension denture base were determined and compared. The results were obtained by using the finite element method of stress analysis. In the first analysis, a conventional distal extension denture base resting on the mandible was simulated. In the second analysis, the same testing force was applied to a distal extension denture base with a resilient layer between the teeth and the basal seat. The results indicated that the stress distribution was more uniform during occlusal loading through a resilient layer. The vertical displacement of the alveolar ridge under the denture base with a resilient layer was far less than that of the conventional denture base.

Dental Stress Analysis↗
PubMed1980

Motion vector analysis of an abutment for a distal-extension removable partial denture: a pilot study.

An investigation was conducted on the effect of various rest-clasp designs on abutment tooth movement when a testing prosthesis was subjected to vertical loading of the bilateral distal-extension base. The results did not reveal statistically significant differences among the rest-clasp designs tested. Variations in rest placement and/or clasp design had an effect on the magnitude and direction of force transmission to, and resultant movement of, the abutment tooth. Less force to the abutment tooth was recorded when a mesial rest was used with the rest-clasp designs as compared to a distal rest. Force transmission to the abutment was found to be greater when the vertical load was applied to the denture base on the same side than when applied to the opposite side of the denture base.

Adult↗