青少年与中老年Bolton指数的比较

发布时间：2018-03-09 21:01

本文选题：错牙合畸形　切入点：Bolton指数　出处：《广西医科大学》2014年硕士论文　论文类型：学位论文

【摘要】：目的：探讨青少年与中老年人Bolton指数、上下颌牙量以及牙量不调发生率是否随着年龄增加而变化。方法：选取牙数完整的错牙合畸形青少年石膏模型191副，鼾症或阻塞性睡眠呼吸暂停低通气综合征中老年病例的石膏模型63副，测量其第一磨牙之间12颗牙齿的牙量，获取所有病例的上颌侧切牙宽度、Bolton指数前牙比、全牙比及牙量不调量，，对结果进行统计分析。结果：1.青少年与中老年Bolton指数前牙比与全牙比均无显著性差异（P0.05)。2.在上下颌牙量的比较中，上颌第一磨牙间牙量两组比较有显著性差异（P0.01），中老年组偏小，其余无明显差异，但中老年组均值变小。3.青少年组牙量不调前牙为31.4%，全牙为42.4%；中老年组前牙为19.1%，全牙为15.9%。4、侧切牙冠宽比较中，青年组均数为7.50，老年组为7.20，比较有显著性差异。结论：1.随着年龄的增加，Bolton指数无明显变化，但上颌牙量有减小，每侧约1-1.5mm,减小区主要在双尖牙及第一磨牙区。2.中老年牙量不调及侧切牙冠宽异常不是引起错牙合畸形的主要原因。
[Abstract]:Objective: to investigate whether the incidence of Bolton index, upper and mandibular tooth volume and tooth irregularity in adolescents and middle aged people vary with age. Methods: 191 pairs of gypsum models of malocclusion and 63 pairs of plaster models of elderly patients with snoring or obstructive sleep apnea hypopnea syndrome were selected to measure the tooth volume of 12 teeth between the first molars. The maxillary lateral incisor width and Bolton index anterior ratio, total tooth ratio and unadjusted tooth volume of all cases were obtained and the results were statistically analyzed. Results 1. There was no significant difference in the ratio of anterior teeth and total teeth between adolescents and middle and old people with Bolton index (P 0.05). 2. There was a significant difference in the volume of maxillary first molar teeth between the two groups (P < 0.01), but there was no significant difference between the middle and old age group (P < 0.01), but there was no significant difference between the two groups in the quantity of maxillary first molar teeth, and there was no significant difference in the other two groups. But the mean value of the middle and old age group was smaller. The mean tooth volume of the middle and old age group was 31.44.The mean of the young group was 7.50, and that of the old group was 7.20, there was a significant difference between the young group and the old group, the anterior tooth was 19.1th and the whole tooth was 15.9.4.In the lateral incisor group, the mean value was 7.50 in the young group and 7.20 in the old group. Conclusion the Bolton index does not change significantly with age, but the maxillary tooth volume decreases. Each side is about 1-1.5 mm, the subtractive area is mainly in bicuspid and first molar area. 2. The main cause of malocclusion is the unadjusted tooth volume and abnormal crown width of lateral incisor in middle and old age.
【学位授予单位】：广西医科大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：R783.5

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