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Biostereometric evaluation of denture tooth wear in 25 subjects was used to determine whether there was a relationship between the gonial angle, mandibular length, Frankfort-mandibular angle, and abrasion of denture teeth. The results of this study indicated no correlation could be demonstrated between any of the factors.
Acrylic resin teeth present a problem when they detach unexpectedly from the denture base resin. Detachment is caused by stress concentrations at the tooth/denture base resin interface. In this study, the finite element method was used to examine the stress distribution at this interface when a single static force that resembled incisal bite force was applied. The results indicated that irrespective of the type of acrylic resin teeth used, maximum tensile stresses were found at the palatal aspect of the interface. It is suggested that boxing the tooth in the acrylic resin will help redistribute stress concentrations favorably.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
This study evaluated complete dentures processed with fluid acrylic resins. The dentures were constructed with the aid of a new flask and modified spruing procedures, with the teeth immobilized in the hydrocolloid mold, and with slight mechanical vibration provided during the pouring of the resin. The fluid resin dentures were compared with the dentures constructed by the compression-molding technique and processed with heat-curing acrylic resin. The results indicate that the fluid resin dentures underwent more processing shrinkage (0.617%) than the conventionally processed dentures (0.377%). However, the fluid resin dentures seemed to function as well as the heat-cured dentures. The excessive reduction in the vertical dimension of the occlusion usually observed with fluid resin dentures was minimized; the average cusp height reduction was -0.089 mm. Individual tooth movement, voids, visible porosity, and other surface deficiencies were eliminated.
A survey has been presented that correlates measurements of upper lip type, sex, race, and age of dentulous patients with the amount of exposure of the maxillary and mandibular anterior teeth with the lips gently parted and in the resting position. Perhaps the most interesting finding was the gradual reduction in the amount of maxillary central incisor exposure with an increase in age, accompanied by a gradual increase in the mandibular tooth exposure. The importance of the amount of mandibular teeth seen in complete dentures has not been sufficiently emphasized in previous literature.
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This article outlines a technique for the fabrication of metal posterior tooth blocks which have tooth-colored facings of acrylic resin or dental porcelain. The technique is applicable for all removable dental restorations but has special applicability for the chronic bruxing patient who has a natural dentition opposing the removable partial denture.
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A procedure has been described for using porcelain-fused-to-metal crowns in place of denture teeth on a removable partial denture. Improved esthetic results are achieved when replacement denture teeth are made simultaneously with, and visually match, adjacent tooth crowns. This procedure provides a superior treatment result, particularly where multiple unilateral anterior teeth are lost and a removable partial denture is indicated.