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Fig. 3 | BMC Oral Health

Fig. 3

From: Thickness change of masseter muscles and the surrounding soft tissues in female patients during orthodontic treatment: a retrospective study

Fig. 3

a. The boundary of the masseter area of the face (MAS); b. masseter area of the facial soft tissue (outer surface) (MAS); and c. deviation analysis between pretreatment and posttreatment MAS. Upper boundary: the tangent line passing the lower margin of the zygomatic arch; lower boundary: the tangent line passing the lower margin of the mandibular body; anterior boundary: the tangent line passing the anterior margin of the masseter muscle; posterior boundary: the line connecting the middle of the articular tubercle and the posterior point of the gonial angle

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BMC Oral Health

ISSN: 1472-6831

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