Cranial base parameters in adults with skeletal class I and class II skeletal pattern
Soorya Dileep1, Maimoona Abdul Khader2, Hashim Ali3, Denis K Paul4, Milna Narayan5, Adarsh Jayan6
1 Department of Orthodontics and Dentofacial Orthopaedics, Rajas Dental College and Hospital, Tirunelveli, Tamil Nadu, India
2 Department of Orthodontics and Dentofacial Orthopaedics, Educare Institute of Dental Sciences, Chattiparambu, Malappuram, Kerala, India
3 Department of Orthodontics and Dentofacial Orthopaedics, Kannur Dental College, Anjarakkandy, Kerala, India
4 Department of Pedodontics and Preventive Dentistry, Malabar Dental College and Research Center, Kerala, India
5 Orthodontist, Private Practice, Kannur, Kerala, India
6 Department of Conservative Dentistry and Endodontics, PMS College of Dental Science and Research, Vattapara, Trivandrum, Kerala, India
Assistant Professor, Department of Orthodontics and Dentofacial Orthopaedics, Rajas Dental College and Hospital, Tirunelveli - 627 105, Tamil Nadu
Source of Support: None, Conflict of Interest: None
OBJECTIVE: Cranial base parameters exhibit wide variations. This study evaluated cranial base morphological characteristics of class II and class I malocclusions to identify risk factors for class II skeletal malocclusions.
METHODS: In this cross-sectional study, we recruited 30 class I adults and 30 class II adults and collected their lateral cephalograms. The cranial base length was calculated by measuring the base of the skull by determining the length of sella-to-nasion, basion to pterygomaxillary fissure, and pterygomaxillary fissure to point A. The cranial base angle was measured by the angle formed by the basion, sella, and nasion, and the base of the angle, which connects the basion and nasion, was measured.
RESULTS: The independent t-test for combined values showed no significant differences in one angular and five linear measures between groups. However, one angular measurement was positively correlated when men and women in class I and class II groups were analyzed separately.
CONCLUSION: Male patients with class II patterns exhibited larger cranial base angles than did those with class I patterns. Our study suggested that cranial base features have a minimal role in the development of class II malocclusions.