Int J Stomatol

Inter J Stomatol ›› 2010, Vol. 37 ›› Issue (4): 400-402.doi: 10.3969/j.issn.1673-5749.2010.04.007

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Comparative study of measurements in experimental orthodontic tooth movement

LI Gao-hua, PENG Juxiang, ZHONG Jian-li, LIU Jian-guo, GUAN Xiao-yan, XU Yu-hong, FENG Lei, SU Mu, HUANG Jin.   

  1. Dept. of Orthodontics, School of Stomatology, Zunyi Medical College, Zunyi 563003, China
  • Online:2010-07-20 Published:2010-07-20

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Abstract:

Objective To evaluate the validity and accuracy of the distance of experimental orthodontic tooth movement measured by stereomicroscope and vernier caliper. Methods 60 male Sprague-Dawley rats were randomly divided into 5 groups. Each group had 12 rats. The rats were sacrificed in 1, 4, 7, 10 and 14 days after the application of mechanical force. The precise impressions were made before and after experiment. The distance of tooth movement was measured by both stereomicroscope and vernier caliper. The results were compared and had dispersion analysis. Results The results showed that all the measurements had no significant difference except the 1 and 4 days group. Dispersion analysis showed that the measurement with stereomicroscope was more accurate than with vernier caliper. Conclusion The stereomicroscope measurement can exactly accomplish the experimental measurement of tooth movement.

Key words: stereomicroscope, vernier caliper, tooth movement, orthodontics, rat


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