Sorvari R, Pelttari A, Meurman J H
Department of Anatomy, University of Kuopin, Finland.
Caries Res. 1996;30(2):163-8. doi: 10.1159/000262154.
Young Osborne-Mendel rats were given different diets for 6 weeks. Effects of soft and rough food as well as acidic sport drink on the lingual surfaces of first mandibular molars were studied. In addition, the effect of fluoride on erosion was examined. A Jeol JSM-35 scanning electron microscope was used to visualize tooth surface ultrastructure. Intact surfaces were found in the rats given soft food and distilled water. Sport drink (pH 3.2) caused severe erosion with total loss of supragingival enamel and exposure of dentin. Attrition effects were seen on the cuspal parts of the surface when rough food was given. Tooth tissue loss was greatest in the rats given rough food and sport drink; signs of both erosion and attrition could be seen. When fluoride was added to the sport drink erosion lesions were less severe and if dentin was exposed, the dentinal tubules were partly occluded. These SEM observations support earlier studies which have suggested that erosion may alter tooth surface so that it is more susceptible to attrition; in those lesions, however, clinical diagnosis of the initial causes may be difficult.
给幼年奥斯本-孟德尔大鼠喂食不同饮食6周。研究了软食、粗食以及酸性运动饮料对下颌第一磨牙舌面的影响。此外，还研究了氟对侵蚀的影响。使用日本电子JSM-35扫描电子显微镜观察牙齿表面超微结构。喂食软食和蒸馏水的大鼠牙齿表面完整。运动饮料（pH 3.2）导致严重侵蚀，龈上釉质完全丧失，牙本质暴露。喂食粗食时，牙齿表面的尖部出现磨损。喂食粗食和运动饮料的大鼠牙齿组织损失最大；可见侵蚀和磨损的迹象。当向运动饮料中添加氟时，侵蚀性病变不那么严重，并且如果牙本质暴露，牙本质小管会部分堵塞。这些扫描电子显微镜观察结果支持了早期的研究，这些研究表明侵蚀可能会改变牙齿表面，使其更容易受到磨损；然而，在这些病变中，对初始病因进行临床诊断可能很困难。
