Ulrici V, Vogel A, Pieper K S, Scharschmidt F, Schumacher G H
Anat Anz. 1985;160(1):9-15.
Biopsy specimens from the masseter muscle of the miniature pig "Mini-LEWE" were analysed histochemically before and after unilateral occlusal disturbances. The percentages of different fibre types and the cross-sectional area of fibres were determined with the myosin-ATPase reaction after acid preincubation. The capillary membranes were visualized by means of modified PAS-reaction. There was demonstrated a significant increase from the percentage portion of ST-fibre types, especially of the side of occlusal disturbance, under experimental conditions. This indicates an increased isometric contraction of the masseter muscle. The size of FT-fibre types and the capillarity increase significantly on the side without occlusal disturbances, due to the dislocation of the masticatory efforts to this side. The masseter muscle fine structure is shown to be adapted good to the disturbed functional conditions. No significant side differences were found in the dry mass of the masticatory muscles, at the end of experiments.
在单侧咬合紊乱前后，对小型猪“Mini - LEWE”的咬肌活检标本进行了组织化学分析。通过酸预孵育后的肌球蛋白 - ATP酶反应确定不同纤维类型的百分比和纤维的横截面积。通过改良的PAS反应观察毛细血管膜。结果表明，在实验条件下，ST纤维类型的百分比显著增加，尤其是在咬合紊乱侧。这表明咬肌的等长收缩增加。由于咀嚼力向无咬合紊乱侧转移，该侧FT纤维类型的大小和毛细血管数量显著增加。咬肌的精细结构显示出很好地适应了功能紊乱的状况。在实验结束时，咀嚼肌的干重未发现显著的侧别差异。
