성장기 아동의 상하악골 성장 및 제 1대구치 위치적 변화에 대한 연구

Abstract

[한글]

성장기 아동을 대상으로 교정치료시 상하악골의 성장변화와 상하악 제 1대구치의 맹출 방향을 규명함으로서 부정교합 환자의 진단 및 치료계획 수립에 도움을 주기 위하여 저자는 남자 43명, 여자 39명의 6세부터 11세까지 촬영한 두부방사선 규격사진을 연구하여 다

음과 같은 결론을 얻었다.

1. TM-ANS, Mandibular plane을 중첩시켜 얻은 상하악 제 1대구치의 맹출방향은 개인차가 심하였다.

2. 상악 제 1대구치의 수평, 수직변화량은 상관관계가 없으며 하악 제 1대구치의 수평, 수직 변화량은 순상관관계를 보였다.

3. 하악 제 1대구치는 상악 제 1대구치보다 맹출하면서 전방이동량이 유의성있는 큰 값을 보였다.

4. 상하악골의 연령증가에 따른 변화량은 일정하지 않았다.

5. 하안면고경의 변화량은 비교적 일정하였다.

6. N-S-6은 7세 이후에 변화가 없었다.

A STUDY ON GROWTH CHANGES OF MAXILLA AND MANDIBLE AND POSITION CHANGES OF FIRST

PERMANENT MOLARS OF GROWING CHILDREN

Dae Hee Cho

Dept. of Dental Science, Graduate School, Yonsei University

(Directed by Prof. Byung Hwa Sohn, D.D.S., M.S.D., Ph.D.)

The purpose of this study was to investigate the growth changes of maxilla and

mandible and position changes of first permanent molars of growing children.

The author analyzed the data using cephalometric roentgenogram of 43 boys and 39

girls age of 6 to 11 with normal occlusion.

The obtained results were as follows

1. The eruption path of maxillary and mandibular first permanent molar

superimposed on TMANS and mandibular plane shows individual variation.

2. There was no correlation between horizontal and vertical changes of maxillary

first permanent molar, but positive correlation in mandibular first permanent

molar.

3. As the eruption, the forward changes of mandibular first permanent molar was

significantly greater than that of maxillary first permanent molar.

4. As the ages were increased, there were irregular growth changes of maxilla and

mandible.

5. Growth changes of lower anterior facial height was relatively stable

6. N-S-6 was stable after age7.

[영문]

The purpose of this study was to investigate the growth changes of maxilla and mandible and position changes of first permanent molars of growing children.

The author analyzed the data using cephalometric roentgenogram of 43 boys and 39 girls age of 6 to 11 with normal occlusion.

The obtained results were as follows

1. The eruption path of maxillary and mandibular first permanent molar superimposed on TMANS and mandibular plane shows individual variation.

2. There was no correlation between horizontal and vertical changes of maxillary first permanent molar, but positive correlation in mandibular first permanent molar.

3. As the eruption, the forward changes of mandibular first permanent molar was significantly greater than that of maxillary first permanent molar.

4. As the ages were increased, there were irregular growth changes of maxilla and mandible.

5. Growth changes of lower anterior facial height was relatively stable

6. N-S-6 was stable after age7.