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KMID : 0358919990260020437
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Journal of the Korean Academy of Pedodontics
1999 Volume.26 No. 2 p.437 ~ p.445
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RELATIONSHIP BETWEEN LASER DOPPLER FLOWMETER OUTPUT AND STAGE OF ROOT DEVELOPMENT
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Koo Sun-Ju
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Abstract
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The purpose of this study was to evaluate the changes of laser doppler flowmeter output associated with stage of root development.
Laser Doppler Flowmeter was done in 40 elementary students aged between 7 and 8 years and in 20 adults aged between 23 and 24 years. Among 40 elementary students, 20 had apical foramens with 1 ---2mm diameters and another 20 had ones with larger diameters than 2mm. The LDF values were analyzed with ANOVA and paired t-test. The results were as follows.
1. Immature root apecies group had a higher tendency than mature root apecies group in LDF values, but there was no statistical significance (p)0.05).
2. There was no statistical significance in LDF values comparing groups with immature root apecies (p)0.05).
3. There were no significant differences between right and left central incisors in LDF values (p A05).
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KEYWORD
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