Since many patients with Class III malocclusion exhibit maxillary deficiencies, there is not enough room for the teeth to be arranged in the maxilla, which leads to anterior crowding. Therefore, extraction of the maxillary teeth can be decided according to the amount of crowding and inclination of the maxillary incisors. Occasionally, extraction may be required the mandible, but most of mandibular crowding can be solved through proclination of the mandibular incisors. In contrast, mild crowding, normal angulation of the maxillary incisors, and sufficient amount of surgical movement are contraindication for non-extraction.
• Indication for extraction planning
- severe crowding,
- severe labioversion of the maxillary incisors (dental compensation),
From Dr. Sug-joon Ahn :
Since many patients with Class III malocclusion exhibit maxillary deficiencies, there is not enough room for the teeth to be arranged in the maxilla, which leads to anterior crowding. Therefore, extraction of the maxillary teeth can be decided according to the amount of crowding and inclination of the maxillary incisors. Occasionally, extraction may be required the mandible, but most of mandibular crowding can be solved through proclination of the mandibular incisors. In contrast, mild crowding, normal angulation of the maxillary incisors, and sufficient amount of surgical movement are contraindication for non-extraction.
• Indication for extraction planning
- severe crowding,
- severe labioversion of the maxillary incisors (dental compensation),
- a small amount of surgical movement,
- narrow width of the maxillary arch
• Indication for non-extraction planning
- mild crowding,
- normal angulation of the maxillary incisors,
- sufficient amount of surgical movement,
- no transverse problem