The following report appeared in the “The 5^th Asian-Pacific Cleft Lip and Palate Conference” September 29-October 1, 2003
APCP Final Program and Abstract Book
 

Secretariat of the 5^th APCP
C/o Seong & Min M.I.C.E. Consulting. Ltd. Co.
#1102 Gangnam Newstel, 826-30 Yeoksam 1-dong,
Seoul Gangnam-gu Seoul 135-93 Korea
E-mail apcp2003@Korea.com, apcp2003@apccp.org

FP-7-5 P, Pg. 216

Dental and Skeletal Characteristics and Growth in Class III Malocclusion Between Skeletal Ages of 10 an 14
Seung Ki Min DDS*, Ted Rothstein**
*Department of Orthodontics MoMa Orthodontics, Korea
** Private Practice Brooklyn, NY since 1973 www.drted.com
 

This study followed the protocol outlined by Dr. Ted Rothstein in his study of children with Class II malocclusion, PhD dissertation 1973 and reported in the AJO: March 2000, Vol. 117, No. 3, Pp. 320-332  and the AJO-DO/: November 2001, Vol. 120, No. 5, Pp. 542-555

The purpose of this study is to evaluate the growth changes and skeletal characteristics of Korean Children with Class III malocclusions from 10-14 years of skeletal age.

The radiographs of 60 Korean Children with Class III malocclusion and 60 normal controls were assessed.  Both groups were subdivided into 6 samples according to sex and skeletal age. The Krogman-Walker plane (occipitale-maxillon)  was used as the horizontal plane of orientation of the head x-rays in this study with a  Y-axis perpendicular to the X-axis through Sella.

The characteristics of Class III malocclusion group compared to the control group included shorter anterior and posterior cranial base, shorter and retrusive maxilla, longer mandible, Steeper mandibular plane angle, increased molar-incisor distance, retroclined lower incisors, labially proclined upper incisors, and anteriorly located mandibular molar, smaller upper and middle facial depth, and larger lower facial depth.

The factors contributing to the development of Class III malocclusion include deficiency and retrusion of maxillary complex. Hyperdivergent mandibular plan, changes in anterior segment of mandible, small anterior cranial base and decrease in cranial base flexure was also noted

Dr. Ted's Home Page     Site Additions     Invisalign Info Menu   Orthodontic Jaw Wiring   Arrange a Consultatation    Lingual braces