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hird molars usually erupt in the oral cavity at the age of 15 to 24 years .Some erupt in the late 30s, while others remain unerupted.1,2 The time of eruption, position in the arch and size of the crown varies among individuals. Third molars are considered as impacted when they fail to erupt into a functional occlusion in the oral cavity at a specified time.3 These impactions are classified according to angulations in the arch, mandibular bone position and crown patterns.3 Pell GJ and Gregory GT devised a comprehensive system to classify impacted wisdom teeth.4Winters categorized the third molars into mesio-angular, disto-angular, horizontal, and vertical impactions depending on tooth angulation in the oral cavity.5 Previous literature showed a high rate of carious lesions in the second molars due to impaction of third molars.6,7 Majority of the distal caries was linked to mesio-angular tilting of third molar teeth.7,8 Peri-coronal flap makes this area less accessible for routine cleaning and more prone to biofilm and plaque accumulation.9 Gingival recession further accelerates the process by allowing food impaction and exposure of cementoenamel junction. Carious lesions initiate and progress as a consequence.10 Pain is the most significant indicator in the detection of caries of this variety.11 These lesions often remain unnoticed for long periods of time due to poor visibility. Delay in treatment of distal carries is one of the lead causes of early tooth loss.12 A similar study was carried out in Islamabad, Pakistan with the findings that 42.5% of distal caries in mandibular 1. Assistant Professor, Department of Operative Dentistry, Nishtar Institute of Dentistry, Multan, Pakistan. 2. Associate Professor, Department of Community & Preventive Dentistry, Institute of Dentistry, CMH Lahore Medical College 3. Dental Technologist, Tehsil Headquarter Hospital Mian Channo. 4. Associate Professor, Department of Operative Dentistry, Nishtar Institute of Dentistry, Multan, Pakistan. 5. Professor, Department of Operative Dentistry, Institute of Dentistry, CMH Lahore Medical College, Lahore, Pakistan. 6. Professor, Department of Prosthodontics, Institute of Dentistry, CMH Lahore Medical College, Lahore, Pakistan. Corresponding author: “Dr. Asma Shakoor” < asmashakoor@hotmail.com >

Prevalence of Distal Carious Lesions in Mandibular Second Molars Due to Mesio-Angular Impacted Third Molars