Treating Growing Patients With Mandibular Prognathism and Maxillary Constriction

Exclusion Criteria

• •1. skeletal class III malocclusion caused predominantly by maxillary deficiency (SNA\<78° with a normal SNB angle)
• •2. severe skeletal class III presenting mainly due to mandibular protrusion (ANB \< - 4° with no functional shift on closure)
• •3. contraindications for the use of the mini-screws, such as osteoporosis (addressed with cortisone and its derivatives) or those undergoing radiation treatment
• •4. a convergence between the mandibular canine root and the first premolar root ,which was assessed radiographically
• •5. facial asymmetry, characterized by a mandibular midline deviation exceeding 2 mm from the facial midline
• •6. MM angle \>35° or SN-MP angle \> 40°
• •7. The existence of cleft lip or craniofacial syndromes and/or palate abnormalities and
• •8. The existence of supernumerary teeth or missing ones except for the third molars.