Accuracy of Panoramic Radiography in Assessing the Labio-palatal Position of Maxillary Impacted Canines and Root Resorption of the Adjacent Tooth

Document Type : Original Article


1 School of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran

2 Department of Orthodontics, School of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran

3 Department of Oral and Maxillofacial Radiology, School of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran


Background and aim: Determining the accuracy of panoramic radiography in assessing the labio-palatal position of maxillary impacted canines and root resorption of the adjacent tooth.
Materials and methods: We used these further variables: angulation, mesiodistal position, and vertical position, which respectively were based on the angulation of canine about the midsagittal plane, five sectors on panoramic radiographs using the Allcandri method, and division of incisor adjacent to the impacted canine into three sectors. labio-palatal position of the MICs and root resorption of permanent incisors were evaluated on CBCT. The statistical correlation between the investigated variables on panoramic and position of MICs and the root resorption of the adjacent tooth on CBCT were examined using independent t-test, Mann-Whitney test, and Fisher's exact test.
Results: In respect of the mesiodistal position of the cusp tip of the MIC, the labially localized MICs were common in sectors 1 and 2, and the palatally localized MICs were more frequent in sectors 3, 4, and 5. Concerning the vertical position of the MIC's cusp tip, the localized labial MICs were more common in sectors 1 and 3, and palatally localized MICs were more frequent in sector 2. The mean angle of MICs about the sagittal plane was significantly higher in the palatally localized MICs. There was no significant correlation between the MIC's tip, mesiodistal position, and the adjacent tooth's root resorption.
Conclusion: Results showed the correlation coefficients among the upper pharyngeal airway width, and ANB and Witt's analyses were not significant. These results can reinforce the probability of class III malocclusion inheritance.


Main Subjects

[1] Al-Zoubi H, Alharbi AA, Ferguson DJ, Zafar MS. Frequency of impacted teeth and categorization of impacted canines: A retrospective radiographic study using orthopantomograms. European journal of dentistry. 2017;11(1):117-121. doi: 10.4103/ejd.ejd_308_16.
 [2] Lai CS, Suter VG, Katsaros C, Bornstein MM. Localization of impacted maxillary canines and root resorption of neighbouring teeth: a study assessing the diagnostic value of panoramic radiographs in two groups of observers. European journal of orthodontics. 2014;36(4):450-6.
[3] Izadikhah I, Cao D, Zhao Z, Yan B. Different Management Approaches in Impacted Maxillary Canines: An Overview on Current Trends and Literature. The Journal of Contemporary Dental Practice. 2020;21(3):326-36.
[4] Alqerban A, Jacobs R, Fieuws S, Willems G. Comparison of two cone beam computed tomographic systems versus panoramic imaging for localization of impacted maxillary canines and detection of root resorption. The European Journal of Orthodontics. 2011;33(1):93-102.
[5] Ngo CT, Fishman LS, Rossouw PE, Wang H, Said O. Correlation between panoramic radiography and cone-beam computed tomography in assessing maxillary impacted canines. The Angle Orthodontist. 2018;88(4):384-9.
[6] Sajnani AK. Permanent maxillary canines–review of eruption pattern and local etiological factors leading to impaction. Journal of investigative and clinical dentistry. 2015;6(1):1-7.
[7] Elmarhoumy S, Gomaa N. Assessment of maxillary impacted canines using panoramic radiograph and cone-beam computed tomography. Egyptian Dental Journal.2020;66(4):2015-2019.DOI: 10.21608/edj.2020.39553.1213.
[8] Christell H, Birch S, Bondemark L, Horner K, Lindh C, SEDENTEXCT consortium. The impact of Cone Beam CT on financial costs and orthodontists’ treatment decisions in the management of maxillary canines with eruption disturbance. European journal of orthodontics. 2018;40(1):65-73.
[9] El Beshlawy DM. Radiographic assessment of impacted maxillary canine position using CBCT: A comparative study of 2 methods. Egyptian Dental Journal.2019;65(4):3393-402. DOI: 10.21608/edj.2019.74780.
[10] Eslami E, Barkhordar H, Abramovitch K, Kim J, Masoud MI. Cone-beam computed tomography vs conventional radiography in visualization of maxillary impacted-canine localization: A systematic review of comparative studies. American Journal of Orthodontics and Dentofacial Orthopedics. 2017;151(2):248-58.
[11] Alhammadi MS, Asiri HA, Almashraqi AA. Incidence, severity and orthodontic treatment difficulty index of impacted canines in Saudi population. Journal of clinical and experimental dentistry. 2018;10(4):e327.
[12] Nagpal A, Pai KM, Setty S, Sharma G. Localization of impacted maxillary canines using panoramic radiography. Journal of oral science. 2009;51(1):37-45.
[13] Kanwar A. Evaluation of positionof maxillary impacted canine and its effect on adjacent teeth-A correlation study between panoramic radiography and cone beam computed tomography.  International Journal of Biomedical and Advance Research 2016; 7(9): 472-476.
[14] Alfaleh W, Al Thobiani S. Evaluation of Impacted Maxillary Canine Position Using Panoramic Radiography and Cone Beam Computed Tomography. The Saudi Dental Journal. 2020.
[15] Bhuvaneshwari AJ, Singh MP. Use of panoramic radiograph as a single radiographic technique to localize impacted maxillary canine. J Cancer Sci Ther. 2010;2(6):163-5.