CONGENITALLY MISSING PERMANENT MANDIBULAR INCISORS AND THEIR ASSOCIATION WITH MISSING PRIMARY TEETH IN THE SOUTHERN CHINESE (HONG-KONG)

被引:11
作者
DAVIS, PJ
DARVELL, BW
机构
[1] UNIV HONG KONG, PRINCE PHILIP DENT HOSP, DEPT CHILDRENS DENT & ORTHODONT, HONG KONG, HONG KONG
[2] UNIV HONG KONG, PRINCE PHILIP DENT HOSP, DENT MAT SCI UNIT, HONG KONG, HONG KONG
关键词
ANODONTIA; EPIDEMIOLOGY; ORAL;
D O I
10.1111/j.1600-0528.1993.tb00743.x
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
A radiographic survey of a random sample of 454 girls aged 5.9 +/- 0.5 yr and 521 boys aged 5.8 +/- 0.4 y was undertaken to establish data on the incidence of congenitally missing mandibular incisor teeth amongst the Southern Chinese and to compare these figures with those of a similar previous study of 12-yr-olds so to eliminate factors such a trauma or extractions which may have artificially inflated the 12-yr-old incidence data. The proportion of 5-yr-old girls and boys affected by hypodontia in the permanent mandibular incisor region was 0.086 and 0.046 respectively (a significant difference between sexes, P < 0.02), compared with 0.047 and 0.034 for the 12-yr-olds (a non-significant difference) so other factors must have contributed to the discrepancy between the two groups of children. A very strong correlation (p< 10(-25)) between missing primary and missing permanent mandibular incisors is present in this group, and this has implications for prognosis and treatment planning. A fundamental developmental defect is implied.
引用
收藏
页码:162 / 164
页数:3
相关论文
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