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Treatment Plan:

The doctor assessed both intraoral and facial aesthetics, analyzing the smile and laugh from lateral and frontal perspectives. It was concluded that, given the patient's convex facial profile, extraction-based orthodontic treatment would be necessary to achieve significant improvement. The mentalis muscle strain was attributed to the excessive protrusion of the lower anterior teeth. Intraoral examination revealed an ectopically positioned tooth in the maxilla with no functional occlusion against the lower teeth, which had resulted in long-term unilateral chewing and consequently facial asymmetry. The correction plan employed fixed orthodontic appliances with extraction of the four first premolars, retracting the protruded anterior teeth while aligning the dentition, establishing an anterior smile line, and guiding a counterclockwise rotation of the mandibular occlusal plane.
 

Treatment Outcome:

From the facial profile, the patient's lateral convexity was resolved excellently, transforming a convex facial type into a straight/balanced profile. The mentalis muscle was relaxed, perioral muscle tone improved, and the face appeared younger. Intraorally, the teeth were well aligned with close, stable occlusion, and the dental arch presented an ovoid shape. The orthodontic treatment not only improved aesthetics but also enhanced function and oral health.