Biomedical subjects
Publications and source records attributed to A Kazanoglu.
Camper's line has been used by many dentists as a reference in determining the plane of occlusion in edentulous patients. This article describes an instrument that provides the dentist with a clear and accurate assessment of the occlusal plane in relation to Camper's line.
A technique for using a denture tooth to replace a broken facing on an RPD is described. The technique is simple, inexpensive, and easily accomplished in the dental office with minimum time.
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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.
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Pulpal reactions to three dental materials, Scutan, a self-curing resin, and zinc oxide-eugenol cement, were comparable. The pulpal reactions to Scutan appeared to be milder than those to a self-curing resin or to zinc oxide-eugenol cement.
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Microwave sterilization techniques have previously been discussed in the literature, but there is need for information regarding the stability of acrylic resins subjected to these techniques. The purpose of this investigation was to measure and determine the potential influence of microwave sterilization on the dimensional stability of polymerized acrylic resin denture base materials. Uniform samples of previously heat-polymerized, autopolymerized, and visible-light-polymerized acrylic resins were measured for changes in weight and length before and after microwave exposure. All three acrylic resin materials maintained excellent stability; all materials had shrinkage values in the range of 0.02% to 0.03%. This is clinically insignificant compared to polymerization shrinkage, which averages 0.2%.
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