39.Comparison of Reliability and Validity of Different Discrepancy Indicators of Anteroposterior Axis of the Skull of Patients of Varying Age Groups that Visit a Tertiary Care Hospital in Kar
Sadaf Talha1, Attiya Sheikh1, Sanaa Ahmed2, Talha Bin Saeed4, Sara Ahmed Peerzada1 and Muhammad Atif3
ABSTRACT
Objective: To find out the reliability and validity of commonly used antero-posterior skeletal discrepancy indicators including WITS, ANB, Beta Angle and MMAB Class I malocclusion in different age groups.
Study Design: Cross-sectional retrospective study
Place and Duration of Study: This study was conducted at the Orthodontics department of Liaquat College of Medicine and Dentistry, Karachi from January 2018 to June 2020.
Materials and Methods: Cephalometric analysis of 100 patients who went under treatment was done. This study was conducted on patient`s cephalometric records. Data of patients from ages 12 to 26 years who attended OPD during this period was included in the study excluding known cases of syndromes and Cleft Lip and Palate. The value of SNA, SNB, WITS analysis and Beta angle were calculated on pre-treatment lateral cephalograms.
Results: Our sample is majorly composed of females predominantly belonging to the adolescent group. Independent t-test was applied for rater 1 and rater 2 readings of ANB, Beta Angle, WITS, and MMAB finding out that the most valid predictor was the Beta angle and ANB. Intraclass Correlation was almost in perfect agreement in all the parameters.
Conclusion: Our study concluded that WITS and Beta angle are valid and reliable predictors of sagittal deficiency in class I malocclusion.
Key Words: Occlusion, Sagittal Discrepancy, Cephalometric Analysis, Malocclusion, Skull Base
Citation of article: Talha S, Sheikh A, Ahmed S, Saeed TB, Peerzada SA, Atif M. Comparison of Reliability and Validity of Different Discrepancy Indicators of Anteroposterior Axis of the Skull of Patients of Varying Age Groups that Visit a Tertiary Care Hospital in Karachi. Med Forum 2022;33(2):169-173.