Skeletal and dentoalveolar dimensions in unilateral impacted canınes, a cone beam computed tomography study

Abstract

Purpose: To compare skeletal and dentoalveolar measurements of subjects with unilateral impacted canine versus the non-impacted contralateral side using cone beam computed tomography (CBCT). Materials and method: 30 CBCTs with unilaterally impacted maxillary canines (Buccal=15, Palatal=15) were selected. Skeletal and dentoalveolar variables (alveolar ridge height of incisors, dentoalveolar height, angulations of incisors and canines, basal lateral width and premolar width) were compared between the impacted and the contralateral sides. Independent t-test was used to compare the variables. Results: There was a significant difference in the mean basal lateral width between the impacted (28.25±1.83 mm) and non-impacted (31.64±2.18 mm) sides. Premolar width was significantly lower on the impacted side (p<0.05). The canines exhibited significantly greater angulations on the impacted side compared to the non-impacted side. The basal lateral width was significantly higher in the buccal subgroup (29.03±1.65mm) compared to palatal (27.48±1.70mm) on the impacted side. The intra-operator reliability was found to be high (0.99%). Conclusion: Significant differences were seen in canine angulation, premolar width and basal lateral width between impacted vs. non impacted sides. Basal lateral width was higher in buccal impacted cases compared to palatal.

Keywords

• Impacted canine
• CBCT
• Skeletal dimensions
• Diagnosis
• Orthodontic treatment

References

1. 1. Juodzbalys G, Daugela P. Mandibular third molar impaction: review of literature and a proposal of a classification. J Oral Maxillofac Res 2013;4:e1. google scholar
2. 2. Abdel-Salam E, El-Badrawy A, Tawfik AM. Multi-detector dental CT in evaluation of impacted maxillary canine. Egypt J Radio Nucl Med 2012;43:527-34. google scholar
3. 3. Hanke S, Hirschfelder U, Keller T, Hofmann E. 3D CT based rating of unilateral impacted canines. J Craniomaxillofac Surg 2012;40:e268-76. google scholar
4. 4. D Oleo-Aracena MF, Arriola-Guillen LE, Rodriguez-Cardenas YA, Ruiz-Mora GA. Skeletal and dentoalveolar bilateral dimensions in unilateral palatally impacted canine using cone beam computed tomography. Prog Orthod 2017;18:1-7. google scholar
5. 5. Jena AK, Duggal R. The pattern of maxillary canine impaction in relation to anomalous lateral incisors. J ClinPediatr Dent 2010;35:37-40. google scholar
6. 6. Walker L, Enciso R, Mah J. Three-dimensional localization of maxillary canines with cone-beam computed tomography. Am J Orthod Dentofacial Orthop 2005;128:418-23. google scholar
7. 7. Jacoby H. The etiology of maxillary canine impactions. Am J Orthod Dentofacial Orthop 1983;84:125-32. google scholar
8. 8. Kanavakis G, Curran KM, Wiseman KC, et al. Evaluation of crown-root angulation of lateral incisors adjacent to palatally impacted canines. Prog Orthod 2015;16:1-6. google scholar

9. 9. McConnell TL, Hoffman DL, Forbes DP, Janzen EK, Weintraub NH. Maxillary canine impaction in patients with transverse maxillary deficiency. ASDC J Dent Child 1996;63:190-5. google scholar
10. 10. Tadinada A, Mahdian M, Vishwanath M, Allareddy V, Upadhyay M, Yadav S. Evaluation of alveolar bone dimensions in unilateral palatally impacted canine: a cone-beam computed tomographic analyses. Eur J Orthod 2015;37:596-602. google scholar
11. 11. Bishara SE. Impacted maxillary canines: A review. Am J Orthod Dentofacial Orthop 1992;101:159-71. google scholar 12. Sajnani AK, King NM. Prevalence and characteristics of impacted maxillary canines in Southern Chinese children and adolescents. J Investig Clin Dent 2014;5:38-44. google scholar
12. 13. Kjaer I. Mechanism of human tooth eruption: review article including a new theory for future studies on the eruption process. Scientifica (Cairo) 2014;2014:1-13. google scholar
13. 14. Wise GE. Cellular and molecular basis of tooth eruption. Orthod Craniofac Res 2009;12:67-73. google scholar
14. 15. Anic-Milosevic S, Varga S, Mestrovic S, Lapter-Varga M, Slaj M. Dental and occlusal features in patients with palatally displaced maxillary canines. Eur J Orthod 2009;31:367-73. google scholar
15. 16. Dağsuyu IM, Kahraman F, Okşayan R. Three-dimensional evaluation of angular, linear, and resorption features of maxillary impacted canines on cone-beam computed tomography. Oral Radiol 2017;34:66-72. google scholar
16. 17. Schindel RH, Duffy SL. Maxillary transverse discrepancies and potentially impacted maxillary canines in mixed-dentition patients. Angle Orthod 2007;77:430-5. google scholar