顎口腔系の状態と全身状態との関連に関する研究 実験的こう合干渉が自律神経機能に及ぼす影響

Abstract

As part of a study to clarify the effects of changes in the stomatognathic system on autonomic functions, experimental occlusal interference was applied to the mandibular molar on the primary mastication side in 10 healthy subjects with natural teeth. Then examination was carried out on daily changes in the heights of digital plethysmograms and the R-R intervals on the electrocardiogram as well as their coefficients of variation. The results were as follows:1. The heights of digital plethysmograms had decreased 24 hours after the interference was applied but increased daily after its removal, returning nearly to the pre-interference value after another 48 hours. The coefficient of variation had increased 24 hours after the interference was applied but decreased daily after its removal, nearly recovering the pre-interference value after 48 hours.2. The R-R interval on the electrocardiogram had decreased 24 hours after the interference was applied but had nearly recovered its pre-interference value 24 hours after the interference was removed. The coefficient of variation had decreased 24 hours after the interference was applied but recovered daily after its removal, nearly recovering the pre-interference value after 48 hours.3. These results suggest that abnormalities such as occlusal interference in the stomatognathic system induce functional abnormalities and that these affect both sympathetic and parasympathetic functions in the autonomic nervous system. One week after the removal of interference, each parameter had nearly recovered its pre-interference value. This suggests that normalization of the stomatognathic system is involved in the normalization of the autonomic function.