Case History
A 15-year-old male patient of Asian origin presented for orthodontic
treatment with the chief complaint of crowding in his lower front teeth.
Intraoral clinical examination revealed severe crowding in the mandible,
mild crowding in the maxilla, a bilateral class II canine relationship,
retroclined upper incisors, impinging deep overbite, and overjet of 5
mm. (Figure 1). His convex soft tissue profile and smile analysis
revealed a decreased incisal show (Figure 2).
Lateral cephalometric radiograph analysis showed a mild mandibular
deficiency and high mandibular plane angle, retroclined maxillary
incisors, and proclined mandibular incisors (Figure 3b). Panoramic
radiography showed impacted third molars; rocky mountain analysis on the
posterior-anterior cephalometric radiograph showed a narrow maxilla in
the transverse dimension (Figure 3c).