|PG FORUM/CRITICAL APPRAISAL
|Year : 2019 | Volume
| Issue : 1 | Page : 92
Correlation between panoramic radiography and cone-beam computed tomography in assessing maxillary impacted canines
Ananta Singh, Anirban Sarkar, Shweta Pandey
PG Student, Department of Orthodontics and Dentofacial Orthopaedics, Sardar Patel Postgraduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh, India
|Date of Submission||23-Jul-2018|
|Date of Acceptance||02-Aug-2018|
|Date of Web Publication||04-Feb-2019|
PG Student, Department of Orthodontics and Dentofacial Orthopaedics, Sardar Patel Postgraduate Institute of Dental and Medical Sciences, Lucknow, Uttar Pradesh
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Singh A, Sarkar A, Pandey S. Correlation between panoramic radiography and cone-beam computed tomography in assessing maxillary impacted canines. J Indian Orthod Soc 2019;53:92
|How to cite this URL:|
Singh A, Sarkar A, Pandey S. Correlation between panoramic radiography and cone-beam computed tomography in assessing maxillary impacted canines. J Indian Orthod Soc [serial online] 2019 [cited 2019 Feb 21];53:92. Available from: http://www.jios.in/text.asp?2019/53/1/92/251543
Ngo CT, Fishman LS, Rossouw PE, Wang H, Said O. Correlation between panoramic radiography and cone-beam computed tomography in assessing maxillary impacted canines. Angle Orthod 2018;88:384-9.
| Background|| |
Conventionally, panoramic radiographs have been used to assess impacted canines. However, with the advent of cone beam computed tomography (CBCT), the localization of impacted canines and the resorption of adjacent teeth have become more reliable. Hence, the study was designed to assess the reliability of panoramic radiographs in the localization of impacted canines as well as the resorption of adjacent incisors when compared to CBCT.
| Aims|| |
The objective was to assess the mesiodistal position of maxillary impacted canines on panoramic radiographs and to compare these with the labio-palatal position of maxillary canines and the possibility of root resorption of adjacent permanent teeth on CBCT.
| Materials and Methods|| |
The study sample consisted of 64 patients with maxillary impacted canines (MICs) and was divided into two groups: <15 and > 15 years. Panoramic radiographs and CBCT images for the labio-palatal position of the MICs and resorption of adjacent incisors were analyzed and compared. The statistical correlation between panoramic radiograph and CBCT results were examined using the Chi-square test and the Fisher's exact test.
| Results|| |
Labially impacted canines were more frequent in Sector 1 and palatally impacted canines were most frequent in Sectors 3, 4, and 5. There was a statistically significant association between the sectors of the canines and the labio-palatal position of the canines. Both age groups and root resorption were more frequently observed in the palatally impacted canines, but the difference was not significant.
| Conclusion|| |
The labio-palatal position of MICs and resorption of permanent incisors might be predicted using sector location on panoramic radiographs.
| Critical Evaluation|| |
Panoramic radiography has been found to be of questionable value in the diagnosis of the incisor region because of the large error in horizontal magnification particularly in the lateral incisor–canine region. This study intended to predict the labio-palatal position of the MICs based on the sector classification. However, the required statistical tests, such as Pearson's correlation coefficient and coefficient of determination, were not derived which would have specifically assessed the predictability of labio-palatal portion of impacted canines based on sector classification. In this study, the amount of root resorption in the permanent incisors has been vaguely addressed. The amount of root resorption in the incisors has been documented to be observed mostly in the lateral incisor region as the impacted canine lies adjacent to the root of the lateral incisor. The amount of resorption in the lateral and central incisors should have been documented separately. In addition, the method by which the amount of resorption was graded is not mentioned in the article.
CBCT remains the method of choice for localizing the position of the impacted canine accurately as well as assessing the extent of root resorption of adjacent incisors. Nevertheless, panoramic radiographs can be used as a tool for the initial diagnosis of impacted canines.