Skeletal Class II Case with Hopeless Upper Lateral Incisor

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  • 保存不可能な上顎右側側切歯を伴う骨格性上顎前突症例
  • 症例報告 保存不可能な上顎右側側切歯を伴う骨格性上顎前突症例
  • ショウレイ ホウコク ホゾン フカノウ ナ ジョウガク ミギガワガワ セッシ オ トモナウ コッカクセイ ジョウガク ゼントツショウレイ

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Abstract

In clinical practice, teeth with hypoplasia, devitalization, or caries are preferentially extracted for convenience as part of orthodontic treatment strategy. In such cases, to obtain ideal esthetic results, tooth shape, the contours of gingival margins and function should be considered before starting orthodontic treatment. 27-year-3-month-old female whose chief complaints were crowding, maxillary protrusion and midline deviations of upper and lower. She had a skeletal class II with hopeless upper right lateral incisor. The treatment objectives were to establish a Class I molar relationship, and to obtain proper interdigitation and an ideal overbite and overjet. Orthodontic treatment involved the extraction of the upper right lateral incisor, upper left first premolar, and lower second premolars on both sides, and the use of an edgewise appliance. In the extraction case of incisor, the orthodontists should be aware of the tooth morphology and the morphology of gingival contours. When aligning the first premolar as the canine, it is common to avoid cuspal interference by reforming the lingual cusp of the first premolar. Moreover, in this case, maxillary right canine gingival recession may happen for thin alveolar bone. However, we were eventually able to avoid cuspal interference, recession by performing tooth movement only, and achieved good function without interference. However, it is also important to note that the observation of stable occlusion.

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