抄録
In order to obtain an optimum tooth guidance in a sence of harmonization withTMJ functions, I here analyzed the relationship between anterior guidance and condylar pathin lateral excursions.
In this paper, I defined a parameter (Sagittal Rotation Angle) concerning rotation of thenon-working condyle in sagittal projection. Through numerical simulations and its measurementsin practical jaw movements, I could confirm a relationship between inclination of incisal pathand sagittal inclination of condylar path, which made this parameter to fall into a limittedrange.
Since this parameter appeared valid in diagnosis and treatment of tooth guidance, I proposeda linear estimation method with good precision, using inclination of incisal path from thehorizontal plane and sagittal inclination of condylar path, and showed its estimation error to becaused mainly by vertical movements of the working condyle.
