Total integral 20을 기준으로한 단순악관절 잡음군과 정상군의 악관절 진동분석

Abstract

Purpose:The purpose of this study is to evaluate total integral 20 as the criteria for differentiating normal TMJ from non-symptomatic clicking groups.

Methods: Joint Vibration Analysis (BioResearch, Inc., Milwaukee, Wisconsin, USA) was used in analysis of normal control group (n=20) showing silent joint via subject's awareness and examiner's palpation and non-symptomatic clicking group(n=30). While using JVA we sorted 9 joints out in control group as Group 1 showing reproducible clickings. We divided vibrations of non- symptonatic clicking groups into Group 2 and Group 3 by the criteria of total integral 20. The hypothesis were; 1) Group1 has equal numeric values to Group 2, 2) Group 2 has lower numeric values than Group 3 in all numeric values on JVA summary except >300/<300 ratio. Kruskal-Wallis and Mann- Whitney test with Bonferroni adjustment (p<0.05) and Jonckhere- terpstra test(p<0.05) were performed.

Results:There were significant differences in total integral, integral <300Hz and med. frequency between Group 1 and Group 2 and no significant differences in integra l>300Hz, peak amplitude and peak frequency. There were significant differences in all numeric values except >300/<300 ratio between Group 2 and Group 3 as well as Group 1 and Group 3. There was increasing tendency to Group 3 from Group 1.

Conclusions: Using total integral 20 as the differential diagnosing method could be controversial. Nevertheless numeric values of JVA could present different degrees of joint vibrations so total integral 20 could provide certain criteria for assisting differential diagnosis along with another diagnosing methods.