PMC5867596_01
Pretreatment facial and intraoral photographs.
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The extraoral examination (Figure 1) showed that he had a dolichofacial, symmetrical face and a prognathic mandible with a Class III appearance. The profile showed reduced facial convexity with anterior divergent face, protrusive upper and lower lips, and an acute nasolabial angle (Figure 1). The intraoral examination (Figures 1 and 2) showed a Class III molar relationship (half cusp) and Class III canine tendency bilaterally.
Pretreatment dental casts.
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The intraoral examination (Figures 1 and 2) showed a Class III molar relationship (half cusp) and Class III canine tendency bilaterally. The dental casts (Figure 2) showed 2 mm maxillary midline diastema and mild crowding (3-4 mm) in the mandible.
Pretreatment radiographs: (a) panoramic radiograph; (b) lateral cephalograph.
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His mandibular third molars were impacted horizontally (Figure 3(a)).