미니 임플랜트 식립과 관련된 절치관의 해부학적 연구

Abstract

Objective: Knowing anatomic location of incisive canal is important in placing mini-implant on midpalate. The purpose of this study was to reveal the position of incisive foramen in relation to incisive papilla and cusp tips. Methods: Plaster models and CT images of 25 adult orthodontic patients were used to measure the width of incisive canal and the position of anterior and posterior border of incisive foramen in relation to the incisive papilla. Results: The palatal surface distance from interdental papilla between maxillary central incisors to the posterior border of incisive foramen along the palatal surface was 1.7 fold of the distance from interdental papilla between central incisors to the posterior border of incisive papilla. The distance between posterior border of incisive papilla and posterior border of incisive foramen along the palatal surface was 6.15 ± 1.75 mm. Anteroposterior position of posterior border of incisive foramen was slightly anterior to the lingual cusp tips of maxillary 1st premolars. So, when implant vertically to occlusal plane, Bone thickness was thicker than to palatal surface, just posterior to this position. The width of incisive foramen was 4.03 ± 0.64 mm, therefore placing mini-implant more than 3 mm laterally is recommended when placing mini-implant lateral to the incisive foramen. Conclusion: These results can be used as a reference in presuming the position of incisive foramen when placing mini-implant in the anterior palate area.