ABSTRACT
PURPOSE: The purpose of this study was to evaluate the success of the resin-bonded cingulum rest seats (RBCRS) supporting removable partial dentures. MATERIALS AND METHODS: Twenty-six patients who had been treated with RBCRSs were recalled and examined. RESULTS: None of the patients who had RBCRSs placed on their teeth experienced debonding, and none of the teeth showed clinically significant signs of wear to the rest seats. CONCLUSIONS: The use of RBCRSs to support removable partial dentures is a highly successful method of treatment.
Subject(s)
Denture Retention/instrumentation , Denture, Partial, Removable , Tooth Preparation, Prosthodontic , Adult , Aged , Dental Abutments , Dental Bonding , Female , Humans , Male , Middle Aged , Resin Cements , Retrospective StudiesABSTRACT
A technique for making an esthetic complete denture as a surgical stent to be used in conjunction with hydroxyapatite augmentation surgery of the maxillary arch is presented. The technique involves the use of an articulator, a remount jig, and duplication of a surgically prepared cast.
Subject(s)
Denture Design , Denture, Complete, Immediate , Denture, Complete, Upper , Esthetics, Dental , Stents , Alveolar Ridge Augmentation , Denture Bases , Equipment Design , Humans , Maxilla/surgery , Tooth, ArtificialSubject(s)
Dental Abutments , Denture, Partial, Removable , Dental Alloys , Dental Bonding , Denture Design , Humans , Resins, SyntheticABSTRACT
Projective distortion has been recognized since the first attempts were made to measure images on x-ray films. However, the nature of this distortion has not been thoroughly investigated by the dental profession. Part of the difficulty in addressing the problem is the necessity of the researcher's having knowledge and training in nonmetric mathematical thinking. To demonstrate the nonmetric nature of projective transformation, seven precision line gauges were made of glass tubes filled with steel balls 1/8 inch in diameter and were attached to a skull at various locations. Cephalometric x-ray films of the prepared skull with gauges in place were taken to simulate lateral and other views. The image lengths of the gauges were directly measured from the x-ray films. The results showed that the image length can be longer, shorter, or the same as the object gauge and cannot be predicted, corrected, or compensated for from the images alone. Linear projective transformation measured in this study ranged from 7.32 percent elongation to 69.63 percent foreshortening. Thus, it is illogical to measure radiographic images without restrictions. The basic limitation of measuring radiographic images on x-ray film is that the parallel relation must be established between the object line (or plane) and the image line (or plane). Technical restrictions should be established as a convention by those who have had the most experience in using radiographic measurements.
Subject(s)
Cephalometry/methods , Radiographic Image Enhancement/methods , Humans , Mathematics , Skull/diagnostic imagingABSTRACT
The preextraction profile record is a means of easily, quickly, and inexpensively recording clinical data prior to extraction of the natural teeth. The record contains a great deal of preextraction information and can be easily stored in the patient's chart. However, the preextraction profile record does not obviate the need for other preextraction records such as radiographs, photographs, and diagnostic casts. The information recorded in preextraction records allows the dentist to have access to and compensate for the progressive changes which occur when the natural teeth are extracted.
