総義歯の咬合台に設けたスピルウェイが咀嚼力負担に及ぼす影響に関する研究

Studies on the effects of the spillway on the occlusal table of complete dentures upon the bearing of masticatory force.

抄録

完全無歯顎患者に食物を咀嚼させ、基底粘膜にかかる咀嚼圧を軽減させるための総義歯の後方人工歯に設けたスピルウェイの効果について検討した。咬合台にスピルウェイを装着したものと装着していないものの2種類の実験用義歯を用い、総義歯を装着した5名の被験者に4種類の試験食を咀嚼させた。その結果、咀嚼時間と咀嚼回数はスピルウェイの有無にあまり影響されなかった。しかし、スピルウェイのある人工歯の咀嚼力は、スピルウェイのない人工歯よりもわずかに小さかった。

We studied the effect of spillways in the posterior artificial teeth of complete dentures in reducing masticatory pressure on the basal mucosa by making completely edentulous patients masticate food. Using two kinds of experimental dentures, one with spillways on the occlusal table and the other without, five subjects wearing complete dentures were instructed to masticate four different types of test food. The results showed that the mastication time and the number of masticatory strokes were not much affected by the existence of spillways. However, the masticatory force of artificial teeth with spillways was slightly smaller than that of artificial teeth without spillways.