Frequency and Distribution of Mount-Hume Classification Among Patients Requiring Root Canal Treatment at Armed Forces Institute of Dentistr

Objective: To assess the frequency and distribution of Mount-Hume classification in patients requiring root canal treatment. Study Design: Cross-sectional study. Place and Duration of Study: Armed Forces Institute of Dentistry, Rawalpindi, Pakistan, from Jan 2024 to Jan 2025. Methodology: Patients visiting operative department of AFID requiring root canal treatment were included in this study. Mount-Hume classification was used for categorizing patients depending upon the lesion site and size of it. Data including demographics, tooth type, lesion site, lesion size and etiology was recorded. Results: A total of 280 teeth from 254 patients were endodontically treated with greater female (58.27%) compared to male (41.73%) patients. Caries was the predominant etiological factor presenting in 264(94.29%) cases. Molars were the most affected tooth type in 167(59.64%) cases, followed by 77(27.5%) premolars and 36(12.86%) anteriors. Significant associations between tooth type and etiology (p<0.001), tooth type and lesion site (p<0.001), and tooth type and size of lesion (p<0.001) were observed. While, site of lesion was found to be significantly associated with etiology (p<0.001), but not with lesion size (p=0.280) Conclusion: Caries was the most common etiology behind root canal treatments, with molars predominantly affected tooth. Advanced diagnostic tools and preventive interventions are needed to mitigate the burden of carious lesions requiring root canal therapy.