颊(俗称腮帮)黏膜位居口腔之内,是通向呼吸道和消化道的“交通”要道,与外界接触的机会多,容易遭受各种不良因素的侵害,因而发生癌的机会比较多。据统计,约75%以上的口腔癌发生在60岁以上年龄组,而这些老年人中,又以患颊黏膜癌为多见。为什么颊黏膜癌好发于老年人身上?首先,是因为老年人的颊黏膜粗糙、干燥,缺乏弹性,唾液分泌较少,所以经常感到口干,影响到说话和咀嚼食物,以致容易出现“咬腮”———咬伤颊黏膜。而动物实验表明,将两组大鼠同时暴露于致癌物环境中,结果失去分泌唾液功能的一组,比正 Cheek (commonly known as cheek) mucosa located within the mouth, is leading to the respiratory and gastrointestinal “traffic” important point, with the opportunity to contact with the outside world, vulnerable to all kinds of adverse factors, and thus the occurrence of cancer opportunities More. According to statistics, about 75% of oral cancer occurs in the age group of over 60 years old, and these elderly people are more common with buccal mucosal cancer. Why buccal mucosal cancer occurs in the elderly? First, because the elderly buccal mucosa rough, dry, lack of elasticity, saliva secretion is less, so often feel dry mouth, affecting the speech and chewing food, so prone to Bite cheeks "--- bite buccal mucosa. The animal experiments show that the two groups of rats exposed to the carcinogen environment at the same time, the result of loss of function of saliva secretion of a group than the positive