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SYNOPSIS IN INTERLINGUAINCIDENTIA DE BRUXISMO.-Le incidentia de bruxismo esseva investigate inter studentes de etates de inter 3 e 36 annos per medio de un questionario. In omne le gruppos de etate, le incidentia de bruxismo amontava a circa 5 pro cento. Pro le gruppos de etate ab 3 ad 17 annos, antecedentes de bruxismo esseva constatate in 15 pro cento del subjectos. Le differential inter le procentage de bruxistas mascule e feminin non esseva statisticamente significative. Esseva trovate un association significative inter (1) bruxismo currentemente presente in le proposito e (2) bruxismo currentemente o previemente presente in consanguineos del proposito.

All-night electromyographic, electro-oculographic, and electroencephalographic studies were conducted on 40 nocturnal bruxists and 18 control subjects. Teeth-grinding incidents occurred at all stages of sleep, with a strong predominance at stage 2.

A prospective longitudinal study of shoulder function after 103 neck dissections involving either preservation or sacrifice of the spinal accessory nerve is presented. The postoperative evolution and course of trapezius muscle denervation and resultant shoulder dysfunction were objectively determined for both radical and modified nerve sparing neck dissections. All patients were enrolled in a program of physical therapy aimed at maintaining range of motion at the shoulder joint. Shoulder function was examined preoperatively and for 12 months postoperatively with manual muscle strength testing, range of motion measurements, and electrodiagnostic testing. Results indicate that modified nerve sparing dissections are followed on the average by a significant, but temporary and reversible phase of shoulder dysfunction. By comparison, radical neck dissection is followed by profound and permanent trapezius muscle weakness and denervation. HEAD & NECK SURGERY 8:280-286 1986We gratefully acknowledge the technical collaboration of

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