Relationship Between Bite Force and Maxillofacial Morphology in Normal Occlusion

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Bite force is considered to be related to maxillofacial morphology. We investigated relationships between bite force, volume and inclination of masseter muscle and maxillofacial morphology. Subjects comprised 19 males with normal occlusion. On the sagittal view, maximum bite force was measured and the mean volume and inclination of bilateral masseter muscles were calculated. Mandibular morphology was measured using lateral cephalogram. On the frontal view, differences betweenboth sides in bite force and mandibular morphology determined from postero-anterior cephalogram were measured. The volume and inclination of masseter muscle were measured using the difference between both sides. All data were used for multiple correlation analysis.<BR>Bite force correlated with volume of masseter muscle, Ramus plane to FH, FMA and inclination of masseter muscle. Bite force correlated with difference in ramus length, and difference in Ag height of both sides.
特定非営利活動法人日本顎変形症学会の論文