Impacted maxillary canines and root resorption of adjacent teeth: A retrospective observational study

Abstract

BackgroundThe prevalence of impacted maxillary canine is reported to be between 1% and 3%. The lack of monitoring and the delay in the treatment of the impacted canine can cause different complications such as: displacement of adjacent teeth, loss of vitality of neighbouring teeth, shortening of the dental arch, follicular cysts, canine ankylosis, recurrent infections, recurrent pain, internal resorption of the canine and the adjacent teeth, external resorption of the canine and the adjacent teeth, combination of these factors. An appropriate diagnosis, accurate predictive analysis and early intervention are likely to prevent such undesirable effects. The objective is to evaluate, by means of a retrospective observational study, the possibility of carrying out a predictive analysis of root resorption adjacent to the impacted canines by means of orthopantomographs, so as to limit the prescription of additional 3D radiography.Material and Methods120 subjects with unilateral or bilateral maxillary impacted canine were examined and 50 patients with 69 impacted maxillary canine (22 male, 28 female; mean age: 11.7 years) satisfied the inclusion criteria of the study. These patients were subjected to a basic clinical and radiographic investigation (orthopantomographs and computerized tomography). All panoramic films were viewed under standardized conditions for the evaluation of two main variables: maxillary canine angulations (a, b, g angles) and the overlapping between the impacted teeth and the lateral incisor (Analysis of Lindauer). Binary logistic regression was used to estimate the likelihood of resorbed lateral incisors depending on sector location and angle measurements.ResultsResults indicated that b angle has the greatest influence on the prediction of root resorption (predictive value of b angle = 76%). If β angle <18° and Lindauer = I, the probability of resorption is 0.06.ConclusionsEvaluation of b angle and superimposition lateral incisor/impacted canine analysed on orthopantomographs could be one of the evaluation criteria for prescribing second level examination (CT and CTCB) and for detecting root resorption of impacted maxillary canine adjacent teeth. Key words:Impacted canine, root resorption, panoramic radiography, angulation, prediction.

Relationship of Angulation of Maxillary Impacted Canines with Maxillary Lateral Incisor Root Resorption

“…The current results found no significant association between the size of ɑ angle and incidence or severity of root resorption in the adjacent lateral incisor, which was in agreement with the results of Guarnieri et al [22]. They assessed the angles between the longitudinal axis of canine and the occlusal line, midline and the longitudinal axis of lateral incisor and confirmed the presence of a correlation between the angle formed by the longitudinal axis of canine and longitudinal axis of lateral incisor with the severity of root resorption of lateral incisor.…”

“…This study assessed the relationship of ɑ and ß angles of maxillary impacted canines with maxillary lateral incisor root resorption on panoramic radiographs and CBCTscans. Of all cases of canine impaction, 14 (35%) were in the right and 26 (65%) were in the left side, which was in agreement with previous results [19,22,23], all conducted on the Iranian population. The age range of patients from 11 to 45 years is an important limitation of the study.…”

Retrospective Evaluation of the Gubernacular Tract in Impacted/Unerupted Teeth with Cone-Beam Computed Tomography

“…Gubernaculum dentis is our biggest source of information about eruption (19). If there are no teeth on palpation and bone deficiency until the age of 10 years, radiographic examination is required (20). For this purpose, radiographs such as periapical, occlusal, panoramic, anteroposterior, lateral cephalometric, and submentovertex are used (21).…”

Prevalence and Pattern of Canine Impaction and Its Associated Anomalies among Orthodontic Patients Attending Tertiary Care Dental Hospital in Kathmandu

“…26 Root length measurements of adjacent teeth can be done using panoramic radiograph but recently, cone beam computed tomography (CBCT) has been proposed as an alternative to conventional CT in the diagnosis and treatment planning of impacted teeth. 9,27 The aim of this study to investigate the prevalence and pattern of impacted maxillary canine among patient attending a dental hospital in Attarkhel and to evaluate the existing relation between impaction of canine and anomaly of adjacent teeth. More number of females showed maxillary canine impaction while mandibular canine impaction showed no gender predominance (Table 3).…”