作者对临床观察3年以上的口腔白斑症患者20例43个部位进行了临床和组织学的研究。结果:发病方式:多发性、单发性病例数相等,发病部位:以牙龈和牙槽粘膜多见。临床视诊型别单发性中以白斑型为多.多发性中白斑与红白斑型患者数大体相同。行病理组织学检 The authors performed clinical and histological studies on 43 sites of 20 patients with oral leukoplakia who had been clinically observed for more than 3 years. Results: The incidence of the disease: the number of multiple, single cases equal, the site of the disease: more common in the gums and alveolar mucosa. White speckles were more common in the clinical observation type alone. The number of patients with multiple leukoplakia was almost the same as that of patients with red and white spots. Histopathological examination