Section 1-1. Each tooth exhibits different influences on blood pressure

Based on the close correlation between salivary secretion and teeth, we advanced the hypothesis that teeth are involved in autonomic nervous system functions. Subsequently, we clarified the relationship between “Blood pressure” as one of the systemic factors and teeth whereby we could sustain this hypothesis. In the previous Chapter, such an explanation was made but there still remains another theme to be confirmed. As briefly described in the articles related to salivary secretion functions, there is another issue whether any contrary stimulating system corresponding to sympathetic and parasympathetic nerves in the autonomic nervous system might exist or not. In terms of blood pressures, there seems to be contrary effects in teeth based on the equation model obtained from determination of blood pressures; however, we wish to investigate part-specific influences according to kinds of teeth from the view point of the relationship between teeth and blood pressures. Are there any antagonizing effects or harmony in the blood pressures according to kinds of teeth as was observed in investigation of salivary secretion?
Figure 30 illustrates the correlation between kinds of teeth and blood pressures which were calculated during the multi-variable analysis on the blood pressures depicted in the previous chapter. This figure shows the fact that each tooth exhibits individual influences on blood pressures to control them. In the submaxillary part, first bicuspid and third molar contribute to elevation of blood pressures. The canine tooth tends to lower the blood pressure instead. The medial incisor, lateral incisor, second bicuspid and first and second molar teeth seem to exhibit neutral effects. On the contrary in the maxillary part, canine and the first bicuspid have blood pressure increasing effects whereas on the contrary, the second molar seems to lower the blood pressure. In the similar manners as those in the submaxillary part, medial incisor, lateral incisor, the second bicuspid and the first molar teeth tend to exhibit neutral actions. The data lines for the teeth, the maximum blood pressure and the minimum blood pressure in Figure 30 were calculated independently; however, beautiful coincidence of the trend according to kinds of teeth indicates high reliabilities of the obtained results. As was the same with the results obtained in salivary secretion functions, blood pressures are affected by individual tooth differently. Furthermore, such effects were found to be contrary or antagonistic as was found in the autonomic nerve functions.



Figure 30
Correlation between teeth by their kinds and blood pressure
These graphs show the correlation between individual submaxillary teeth and blood pressures which were calculated during the multi-variable analysis. The figures from 1 to 8 shown on the horizontal axis denote, (1) medial incisor, (2) lateral incisor, (3) canine, (4) first bicuspid, (5) second bicuspid, (6) first molar, (7) second molar, and (8) third molar. On the vertical axis, the upper column shows the systolic blood pressures, with the lower column for the diastolic blood pressures. Furthermore, please understand the followings while reading these graphs. There is a reference line at the point of 0. The blood pressures below this line mean that the blood pressure shall be lowered by stimulation of teeth whereas on the contrary, the blood pressures above this line indicate that the blood pressure shall be increased by stimulation of teeth. This suggests that individual tooth exerts different influences on blood pressures; as explained in +,－signs for teeth variables in the model equation, influences by individual tooth are not homogeneous but they change blood pressures independently. In terms of submaxillary teeth, both submaxillary first bicuspid (4) and third molar (8) tend to elevate blood pressures while the canine (3) lowers blood pressures. In the similar manners, please look at the maxillary teeth. It would appear likely that both canine and first bicuspid increase blood pressures. On the contrary, second molar seems to decrease the systolic blood pressure. In these graphs, the data lines for teeth as well as systolic and diastolic blood pressures were separately calculated; however, beautiful consistency in trends of teeth provide us with confidence of good reliability.