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At least 181 records · Page 10Linked to original sources
PubMed1996

Biostereometric quantification of clinical denture tooth wear.

In this study the wear of mandibular acrylic resin teeth opposed by porcelain maxillary teeth arranged in a lingualized occlusal scheme over a period of 3 years was measured. Six edentulous subjects received complete dentures as above and with three baseline markers of amalgam. At yearly intervals casts were made of the mandibular occlusal surfaces, including markers, and plotted by stereophotogrammetry. Volumetric loss of material was quantifiable. Ranges of 0.62-3.33 mm3/mm2 on the left side and 0.71-1.64 mm3/mm2 on the right were recorded. Friedman two-way ANOVA test indicated significant wear on teeth 35, 36, 45 and 46 but not on 34 and 44. A one-sided chewer displayed greater wear on the contralateral side, a finding difficult to explain.

Acrylic Resins↗
PubMed1992

Organic tooth wear--overlooked in anatomy texts.

Most anatomy texts depict gear-like apposition of adult upper and lower teeth. But this apposition generally does not occur in civilized man. On the contrary the widespread tooth attrition which occurs in primitive man, is well established. This attrition, which is not depicted in anatomy texts or correctly evaluated in medical and dental education, is a natural protective mechanism that functions to preserve, oral, pharyngeal, and respiratory physiology throughout life. As man removed grit, sand and other abrasive food from his diet, he deprived himself of a natural aid, i.e. attritional wear of teeth that protects the physiology of his mouth and the swallowing and respiratory apparatus (4). In contrast to this the unworn teeth, characteristic of present-day man, prevent anatomic and physiologic changes that normalize oral pathways. For these reasons, 'textbook' tooth occlusion should be re-evaluated.

Humans↗