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Evaluation of craniofacial growth prediction method on Class III malocclusion patients  

Son, Woo-Sung (Department of Orthodontics, College of Dentistry, Pusan National University)
Kang, Eun-Hee (Department of Orthodontics, College of Dentistry, Pusan National University)
Jung, Mi-Ra (Department of Orthodontics, College of Dentistry, Pusan National University)
Sung, Ji-Hyun (Department of Orthodontics, College of Dentistry, Pusan National University)
Publication Information
The korean journal of orthodontics / v.33, no.1, 2003 , pp. 31-39 More about this Journal
Abstract
This study was performed to evaluate whether growth Prediction method can be used to diagnose and make treatment plan in skeletal Class III malocclusion patients or not. The sample was consisted of 25 patients(13 males, 12 females) who had been diagnosed with skeletal Class III malocclusion at first visit and after that had returned to take ortognathic surgery. Growth prediction performed with Ricketts' growth prediction method from first cephaogram. was compared with actual growth of the second cephalogram. The findings of this study were as follows ; 1. There was significant difference between actual growth and growth prediction in Porion Location, Ramus Position, Facial Depth, Facial Axis, Mandibular Plane angle, Maxillary Convexity. So, for these items Ricketts' growth prediction method is not proper to predict growth. 2. Although the growth amount of mandibular body was similar to normal growth amount, mandible was positioned anteriorly because of Porion Location and Ramus Position. 3. In skeletal Class III malocclusion patients, the tendency of mandibular prognathism might be aggreviated because of anterior placement of ramus and anterosuperior rotation of Pogonion.
Keywords
Skeletal class III malocclusion; Growth prediction;
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