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Apical root resorption of incisors after orthodontic treatment of impacted maxillary canines: a radiographic study.
Am J Orthod Dentofacial Orthop. 2012 Apr; 141(4):427-35.AJ

Abstract

INTRODUCTION

The purpose of the study was to evaluate impacted maxillary canines as risk factor for orthodontic apical root resorption.

METHODS

The sample comprised 66 patients treated with fixed appliances. Thirty-two patients with a unilateral impacted maxillary canine, which was distanced from the roots of the incisors at a preliminary phase of treatment before bonding, formed the impaction group, and 34 patients without impactions served as the controls. Root shortening was calculated by using pretreatment and posttreatment intraoral radiographs. Inclination of the eruption path of the impacted canine relative to the midline, axis of the lateral incisor, and nasal line, root development, and the medial and vertical positions of the impacted tooth were recorded on orthopantomograms and lateral cephalometric films. The follicle/tooth ratio was evaluated by using periapical radiographs.

RESULTS

No significant difference in apical resorption of the maxillary incisors was detected between the impaction and control groups, or between the incisors of the impacted and contralateral sides in the same subject. Likewise, no difference in the severity of root resorption was found between the incisors of impacted side alone and the incisors of the control group. Mesial and vertical inclinations of the impacted canines were negatively related to a lateral incisor's root resorption. No correlations were found between resorption and medial or vertical position of the crown of the canine. The follicle/tooth ratio was significantly related to the mesial inclination of the impacted canine, but not to root resorption.

CONCLUSIONS

An impacted maxillary canine, after being distanced from the incisor roots, does not seem to be a risk factor for apical root resorption during orthodontic treatment.

Authors+Show Affiliations

Department of Clinical Dentistry, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

22464524

Citation

Brusveen, Elin Marie Gravdal, et al. "Apical Root Resorption of Incisors After Orthodontic Treatment of Impacted Maxillary Canines: a Radiographic Study." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 141, no. 4, 2012, pp. 427-35.
Brusveen EM, Brudvik P, Bøe OE, et al. Apical root resorption of incisors after orthodontic treatment of impacted maxillary canines: a radiographic study. Am J Orthod Dentofacial Orthop. 2012;141(4):427-35.
Brusveen, E. M., Brudvik, P., Bøe, O. E., & Mavragani, M. (2012). Apical root resorption of incisors after orthodontic treatment of impacted maxillary canines: a radiographic study. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 141(4), 427-35. https://doi.org/10.1016/j.ajodo.2011.10.022
Brusveen EM, et al. Apical Root Resorption of Incisors After Orthodontic Treatment of Impacted Maxillary Canines: a Radiographic Study. Am J Orthod Dentofacial Orthop. 2012;141(4):427-35. PubMed PMID: 22464524.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Apical root resorption of incisors after orthodontic treatment of impacted maxillary canines: a radiographic study. AU - Brusveen,Elin Marie Gravdal, AU - Brudvik,Pongsri, AU - Bøe,Olav Egil, AU - Mavragani,Maria, PY - 2011/06/01/received PY - 2011/10/01/revised PY - 2011/10/01/accepted PY - 2012/4/3/entrez PY - 2012/4/3/pubmed PY - 2012/5/23/medline SP - 427 EP - 35 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 141 IS - 4 N2 - INTRODUCTION: The purpose of the study was to evaluate impacted maxillary canines as risk factor for orthodontic apical root resorption. METHODS: The sample comprised 66 patients treated with fixed appliances. Thirty-two patients with a unilateral impacted maxillary canine, which was distanced from the roots of the incisors at a preliminary phase of treatment before bonding, formed the impaction group, and 34 patients without impactions served as the controls. Root shortening was calculated by using pretreatment and posttreatment intraoral radiographs. Inclination of the eruption path of the impacted canine relative to the midline, axis of the lateral incisor, and nasal line, root development, and the medial and vertical positions of the impacted tooth were recorded on orthopantomograms and lateral cephalometric films. The follicle/tooth ratio was evaluated by using periapical radiographs. RESULTS: No significant difference in apical resorption of the maxillary incisors was detected between the impaction and control groups, or between the incisors of the impacted and contralateral sides in the same subject. Likewise, no difference in the severity of root resorption was found between the incisors of impacted side alone and the incisors of the control group. Mesial and vertical inclinations of the impacted canines were negatively related to a lateral incisor's root resorption. No correlations were found between resorption and medial or vertical position of the crown of the canine. The follicle/tooth ratio was significantly related to the mesial inclination of the impacted canine, but not to root resorption. CONCLUSIONS: An impacted maxillary canine, after being distanced from the incisor roots, does not seem to be a risk factor for apical root resorption during orthodontic treatment. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/22464524/Apical_root_resorption_of_incisors_after_orthodontic_treatment_of_impacted_maxillary_canines:_a_radiographic_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(11)01201-7 DB - PRIME DP - Unbound Medicine ER -