Case 9

Adolescent (permanent dentition)

Problems

Constricted maxilla

Unilateral posterior cross-bite

Shifting of the mandible to the left and asymmetric occlusion
Abnormal mandibular function

Congenitally missing lower left 2^nd premolar and retained primary 2^nd molar

Treatment

Dentofacial orthopedics

Orthodontic treatment with fixed appliances (brackets) Maintained primary 2^nd molar (excellent condition ensuring long-term prognosis)