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本文通过测定戴义齿后基牙上的菌斑堆积、龈沟温度和菌斑微生物的分布,比较龈向进入卡环和(牙合)向进入卡环对牙龈的影响。结果表明,龈向进入卡环具有潜在的危害。实验方法受试者:选择下颌双侧游离缺失的病人10名,平均年龄57岁,所有病人义齿的双侧基牙相同,而钴铬合金修复体在两侧基牙上的卡环不同,一侧是Ⅰ型龈向进入卡环,另一侧是通常使用的(牙合)向进入卡环。另一组相同的试验是在12名牙科学生中进行,他们的牙列完整。给每个学生制作金属支架,6个上颌,6个下颌。实验前1个月教给病人口腔卫生方法和刷牙方法,使其达到实验的基本要求水平。戴义齿的当天作为实验起点。病人戴义齿后教给病人戴义齿的正确方法,要求餐后清洁,只在白天戴用等。观察时间:病人组:①戴义齿的当天;②戴后7天;③戴后3周;④戴后2.5～3.5月;⑤戴后6月～1年。学生组:①戴后第1周每
In this paper, we measured the accumulation of plaque, the sulcus temperature and the distribution of plaque microbes on the abutments of the denture, and compared the effect of the gingiva on the card ring and the occlusal ring on the gums. The results show that the gingival into the clasp has the potential hazard. Experimental methods Subjects: 10 patients with bilateral mandibular free deletion were selected, with an average age of 57 years. All patients had the same abutment teeth on both sides of the denture, while the cobalt chrome restorations had different snap rings on both abutments. Side is gingival type Ⅰ into the snap ring, the other side is usually used (occlusal) into the snap ring. The same set of tests was performed on 12 dental students who had complete dentition. Make a metal bracket for each student, 6 maxillas, 6 jaws. 1 month before the experiment to teach patients oral hygiene methods and brushing method to make it reach the basic level of experimental requirements. Denture day as the starting point of the experiment. Patients after denture taught to the dentist's correct method of dentistry, requiring postprandial cleaning, wearing only during the day and so on. Observation time: the patient group: ① denture day; ② wear after 7 days; ③ wear after 3 weeks; ④ wear after 2.5 ~ 3.5 months; ⑤ wear after 6 months to 1 year. Student Group: ① after wearing the first week