F Ezoddiniardakani, S Yasaei, S Ghanea,
Volume 23, Issue 2 (5-2015)
Abstract
Introduction: This study aimed to assess the position of impacted maxillary canine in panoramic radiography via two variables of angulation and magnification.
Methods: In this cross-sectional study, each panoramic radiography was numbered on which the patient ‘s name was written as well. Two variables, angulation (The angle of impacted maxillary canine was measured in relation to Occlusal plane) and magnification( the ratio of the widest dimension of mesiodistal canine crown to that of the ipsilateral central incisor crown) were assessed in each panoramic radiography (44 impacted maxillary canines), then they were compared with CBCT. Kappa test was used to assess the agreement of the two variables in panoramic radiography and CBCT.
Results: Utilizing angulation variable, 41.6% buccally impacted maxillary canines and 84.3% palatally impacted maxillary canines were determined in their real positions. Moreover, magnification variable also detected 58.3% buccally impacted maxillary canines and 37.5% palatally impacted maxillary canines in their real positions. Degree of agreement between angulation and CBCT was 0.275, and it was reported 0.03 between magnification and CBCT.
Conclusion: The study findings revealed that the angulation and magnification methods were not reliable in order to assess the impacted maxillary canines in panoramic radiography, though Angulation proved to be more successful than magnification method.
Farida Ghazanfari Moghaddam, Dorsa Pourzarabi, Katayoun Lesani,
Volume 31, Issue 3 (6-2023)
Abstract
Introduction: Tooth transposition is considered as the anomaly of tooth position in two adjacent teeth; the most frequent locations include canine and first maxillary premolar. Transposition may happen along with hypodontia, supernumerary teeth, or the persistence of a deciduous predecessor. Supernumerary teeth are considered as the teeth in excess of the normal dentition. Supernumerary teeth can happen in any region of the dental arch. Nevertheless, having supernumerary tooth accompanied by transpositions in the canine area is a rare condition. The aim of this report was introducing a patient with supernumerary maxillary canine along with transposition. A 14-year-old boy without any skeletal, systemic, metabolic and mental problems was referred to the Orthodontic Department of Yazd Dental School, Yazd, Iran. In the clinical study of displacement of the upper canine in the anterior region of the upper jaw, which has led to crowding and buccal protrusion of the main canine of the upper jaw. This supernumerary canine tooth with displacement was discovered based on routine radiological examinations.
Conclusion: The presence of a supernumerary tooth with transposition usually causes occlusion and functional problems in patients. In these cases, a complete clinical and radiographic examination along with a detailed history should be done in order to plan the appropriate surgical, orthodontic, and restorative treatment plan. Early detection is essential to prevent these problems.
