Correlation study between sex and age of patients and root resorption after orthodontic treatment
Zhang, J.; Zhang, W.-j.; Wang, X.-x.; Ma, S.-l.; Chen, D.-y.
Shanghai Kou Qiang Yi Xue 14(5): 452-455
2005
ISSN/ISBN: 1006-7248 PMID: 16288319 Document Number: 589986
To investigate the relationship between root resorption related to fixed appliance and the variables including sex, age. 44 patients were divided into four groups according to sex and age: juvenile males, juvenile females, adult males, adult females. The length of incisors was calculated according to orthopantomograph and study models of pre- and post-treatment, and the relationship between patients' sex and age and root absorption pre- and post-treatment was analyzed by paired t test. Root absorption occurred in every patient. There was no significant difference between the same-age groups of males and females (P<0.05); However, there was significant difference between adult groups (both males and females) and juvenile groups (P<0.01). Root absorption occurs in every fixed-appliance case. Fixed-appliance-caused root absorption has no significant correlation with sex;however, absorption of adult groups is of higher level than that of juvenile groups.