[Three dimensional measurement and analysis of maxillary protraction treatment in skeletal Class III malocclusion].

Purpose: To study the three-dimensional mechanism of maxillary protraction in skeletal Class III malocclusion by cone-beam CT (CBCT).

Methods: Fourteen patients (6 males and 8 females with a mean age of 10.9 years) of early permanent dentition with skeletal Class III malocclusion were treated with maxillary protraction.