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咬合力の測定に用いられる2種類の歯科用プリスケールシステムの比較
Comparison of two dental prescale systems used for the measurement of occlusal force.
PMID: 32193745 DOI: 10.1007/s10266-020-00509-9.
抄録
本研究の目的は，2種類の歯科用プリスケールシステムの関係を明らかにすることであった．健康な被験者40名に約3秒間最大食いしばりをしてもらい，歯科用プリスケール用オクルーザーFPD707（P1）と歯科用プリスケールII用咬合力分析システム（P2）を用いて，クリーニング前後の最大咬合力を算出した．そして、Ｐ１とＰ２で測定した最大咬合力をクリーニング前とクリーニング後で比較した。次に、P1による最大咬合力とP2による最大咬合力の関係を調べた。また、男性と女性で比較を行った。クリーニング後の最大咬合力は、P1、P2ともにクリーニング前に比べて有意に小さくなっていた。咬合力の減少率はP1で4.1％，P2で25.9％であった．P1とP2の最大咬合力の間には有意な直線性が認められた（回帰直線式：y=1.191×-30.521、r=0.980、p<0.001）。P1とP2で測定された最大咬合力は、いずれも男性の方が女性よりも有意に大きかった。歯科用プレスケールと歯科用プレスケールIIで測定した最大咬合力には一定の関係があることが示唆され、回帰式を用いて補正を加えることで両者の結果を比較することが可能であることが示唆された。
The purpose of this study was to clarify the relationship between two types of dental prescale systems. Forty healthy subjects were asked to maximally clench for about 3 s, and the maximum occlusal force before and after cleaning was calculated using an Occluzer FPD707 for dental prescale (P1) and a bite force analyzing system for dental prescale II (P2). The maximum occlusal forces measured by P1 and P2 were compared before cleaning and after cleaning. Next, the relationship between the maximum occlusal force by P1 and maximum occlusal force by P2 was investigated. In addition, comparisons were made between males and females. The maximum occlusal force after cleaning was significantly smaller than before cleaning for both P1 and P2. The reduction rate of the occlusal force was 4.1% for P1 and 25.9% for P2. Significant linearity was observed between the maximum occlusal forces of P1 and P2 (regression linear equation: y = 1.191x - 30.521, r = 0.980, p < 0.001). The maximum occlusal forces measured by P1 and P2 were both significantly larger in males than in females. It was suggested that there was a certain relationship between the maximum occlusal forces measured by dental prescale and dental prescale II, suggesting that it is possible to compare the results of both by applying corrections using a regression equation.