Mandibular growth spurts occur during puberty and are influenced by hormonal changes. Boys typically experience a more pronounced and prolonged mandibular growth spurt than girls, contributing to greater mandibular length and prominence. This difference is clinically significant in orthodontics and maxillofacial surgery for timing interventions. The increased growth in boys aids in planning procedures like orthognathic surgery, as skeletal maturity and growth potential affect surgical outcomes. Understanding this sexual dimorphism helps optimize treatment strategies and improve prognosis.

Reference: Contemporary Orthodontics, 6th Edition.