Anatomic study of the incisive canal in relation to midpalatal placement of mini-implant / 대한치과교정학회지

ABSTRACT

OBJECTIVE: The purpose of this study was to reveal the position of the incisive foramen in relation to the incisive papilla and cusp tips. METHODS: Plaster models and CT images of 25 adult orthodontic patients were used to measure the width of the incisive canal and positions of the anterior and posterior borders of the incisive foramen in relation to the incisive papilla. RESULTS: The palatal surface distance from the interdental papilla between the maxillary central incisors to the posterior border of the incisive foramen along the palatal surface was 1.7 fold of the distance from the interdental papilla between the central incisors to the posterior border of the incisive papilla. The distance between the posterior border of the incisive papilla and posterior border of the incisive foramen along the palatal surface was 6.15 +/- 1.75 mm. The anteroposterior position of the posterior border of the incisive foramen was slightly anterior to the lingual cusp tips of the maxillary 1st premolars. The width of the incisive foramen was 4.03 +/- 0.64 mm, therefore it is recommended to position the mini-implant more than 3 mm laterally when placing a mini-implant lateral to the incisive foramen, from the center. CONCLUSIONS: These results can be used as a reference in presuming the position of the incisive foramen when placing mini-implant in the anterior palate area.