Root invasion of the incisive canal during orthodontic treatment due to excessive palatal root torque. A case report
Abstract
Aim: Patients presenting with bimaxillary proclinati-on often have an accompanying maxillary alveolar pro-cumbency.
Case Report: Posterior relocation of the anterior alveolus is an important mechanism to reduce this prominence. Torquing the maxillary incisor roots palatally allows the anterior alveolus (point A) to remodel distally. This technique is non-invasive and therefore has good patient acceptance.
Results: The following case report demonstrates the involvement of the incisive canal due to increased palatal root torque of the maxillary left central incisor root
Conclusions: The use of 3D imaging in the diagnosis, its clinical complications as well as their remedial measures is also discussed.
Keywords: Incisive canal; Root resorption; Torque; Orthodontics; Maxilla; Cone-beam computed tomography.
References
2. Cho EA, Kim SJ, Choi YJ, Kim KH, Chung CJ. Morphologic evaluation of the incisive canal and its proximity to the maxillary central incisors using computed tomography images. Angle Orthod. 2016;86:571-6.
3. Imamura T, Uesugi S, Ono T. Unilateral maxillary central incisor root resorption after orthodontic treatment for Angle Class II, division 1 malocclusion with significant maxillary midline deviation: a possible correlation with root proximity to the incisive canal. Korean J Orthod. 2020;50:216-26.
4. Pan Y, Chen S. Contact of the incisive canal and upper central incisors causing root resorption after retraction with orthodontic mini-implants: a CBCT study. Angle Orthod. 2019;89:200-5.
5. Chung CJ, Nguyen T, Lee J-H, Kim K-H. Incisive canal remodelling following maximum anterior retraction reduces apical root resorption. Orthod Craniofac Res. 2021;24:59-65.
6. Ono T. Should the “envelope of discrepancy” be revised in the era of three-dimensional imaging? J World Fed Orthod. 2020;9:S59-66.
7. Nakada T, Motoyoshi M, Horinuki E, Shimizu N. Cone-beam computed tomography evaluation of the association of cortical plate proximity and apical root resorption after orthodontic treatment. J Oral Sci. 2016;58:231-6.
8. DeAngelis V. Observations on the response of alveolar bone to orthodontic force. Am J Orthod. 1970;58:284-94.
9. Cangialosi TJ, Meistrell ME Jr. A cephalometric evaluation of hard- and soft tissue changes during the third stage of Begg treatment. Am J Orthod. 1982;81(2):124-9.
10. Andrews LF. The six keys to normal occlusion. Am J Orthod. 1972;62:296-309.
11. Nakada T, Motoyoshi M, Horinuki E, Shimizu N. Cone-beam computed tomography evaluation of the association of cortical plate proximity and apical root resorption after orthodontic treatment. J Oral Sci. 2016;58:231-6.
12. Handelman CS. Approximation and contact of the maxillary central incisor roots. Am J Orthod Dentofacial Orthop. 2016;149:9-10.
13. Kaley J, Phillips C. Factors related to root resorption in edgewise practice. Angle Orthod. 1991;61:125-32.
14. Roscoe MG, Meira JB, Cattaneo PM. Association of orthodontic force system and root resorption: a systematic review. Am J Orthod Dentofacial Orthop. 2015;147:610-26.
15. Bae SM, Kim HJ, Kyung HM. Long-term changes of the anterior palatal alveolar bone after treatment with bialveolar protrusion, evaluated with computed tomography. Am J Orthod Dentofacial Orthop. 2018;153:108-17.
16. Ten Hoeve A, Mulie RM. The effect of antero-postero incisor repositioning on the palatal cortex as studied with laminagraphy. J Clin Orthod. 1976;10:804-22.
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