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KMID : 0361919910210030673
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Korean Journal of Orthodontics
1991 Volume.21 No. 3 p.673 ~ p.683
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ON CEPHALOMETRIC STUDY OF AXIAL INCLINATIONS IN RELATIONS TO THE MALOCCLUSION TYPES
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Abstract
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The purpose of this report is to review vertical dysplasia such as openbite or deep bite in skeletal Class III malocclusion and their treatment modality and to present two cases treated with MEAW.
The results obtained were as follows
A. Open bite case
1. The treatment time was 3 year 8 months.
2. Upper and lower incisors showed extrusion and especially lower anterior alveolar process showed remodelling.
3. The mesially inclined upper and. lower molars were up righted and especially lower first molars showed extrusion that means remodelling of alveolar bone.
4. Normal overbite and overjet were established.
5. Mandible showed slight clockwise rotation.
6. Maxilla showed slight downward bending of ANS part.
7. Upper lip showed downward drop and lower lip showed retraction and touch between upper and lower lip was established.
8. Tongue posture of post-treatment was more raised than pretreatment.
B. Deep bite case
1. The treatment time was 1 year 8 months.
2. Upper incisors showed intrusion and labioversion and lower incisors showed slight intrusion and linguoversion.
3. The lower molars showed distal uprighting and intrusion and upper molars showed mesial movement and extrusion.
4. Normal overbite and overjet were established.
S. Maxilla did not show downward movement.
6. Mandible showed slight clockwise rotation.
7. Lower lip showed retraction and downward drop and upper lip showed downward drop.
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KEYWORD
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