el-ashmawi, N., Ramadan, H., El Desouky, G. (2025). PREVALENCE OF DISTAL SURFACE CARIES IN MANDIBULAR SECOND MOLAR ADJACENT TO IMPACTED THIRD MOLAR IN A SAMPLE OF ISMAILIA POPULATION: A CONE BEAM COMPUTED TOMOGRAPHY STUDY. Dental Science Updates, 6(1), 123-132. doi: 10.21608/dsu.2025.317324.1256
nada amer el-ashmawi; Hitham Refat Ramadan; Gehan El Desouky. "PREVALENCE OF DISTAL SURFACE CARIES IN MANDIBULAR SECOND MOLAR ADJACENT TO IMPACTED THIRD MOLAR IN A SAMPLE OF ISMAILIA POPULATION: A CONE BEAM COMPUTED TOMOGRAPHY STUDY". Dental Science Updates, 6, 1, 2025, 123-132. doi: 10.21608/dsu.2025.317324.1256
el-ashmawi, N., Ramadan, H., El Desouky, G. (2025). 'PREVALENCE OF DISTAL SURFACE CARIES IN MANDIBULAR SECOND MOLAR ADJACENT TO IMPACTED THIRD MOLAR IN A SAMPLE OF ISMAILIA POPULATION: A CONE BEAM COMPUTED TOMOGRAPHY STUDY', Dental Science Updates, 6(1), pp. 123-132. doi: 10.21608/dsu.2025.317324.1256
el-ashmawi, N., Ramadan, H., El Desouky, G. PREVALENCE OF DISTAL SURFACE CARIES IN MANDIBULAR SECOND MOLAR ADJACENT TO IMPACTED THIRD MOLAR IN A SAMPLE OF ISMAILIA POPULATION: A CONE BEAM COMPUTED TOMOGRAPHY STUDY. Dental Science Updates, 2025; 6(1): 123-132. doi: 10.21608/dsu.2025.317324.1256
PREVALENCE OF DISTAL SURFACE CARIES IN MANDIBULAR SECOND MOLAR ADJACENT TO IMPACTED THIRD MOLAR IN A SAMPLE OF ISMAILIA POPULATION: A CONE BEAM COMPUTED TOMOGRAPHY STUDY
1Department of oral radiology, Faculty of dentistry, Suez Canal university
2Lecturer of Oral and Maxillofacial Radiology, Faculty of Dentistry, Suez Canal University, Ismailia, Egypt
3vice Dean of Faculty of Dentistry, Suez Canal University
Abstract
Introduction: Worldwide research has shown that mandibular third molars are the most often impacted teeth in the jaw, followed by maxillary canines then mandibular premolars. Impacted third molars may be associated with several pathologies related to impacted tooth itself or adjacent second molar such as periodontal problems, root resorption and distal caries of adjacent teeth. Aim: The purpose of the present study was to determine the prevalence of distal surface caries in mandibular second molars adjacent to impacted third molars in a sample of Ismailia population using CBCT. Methods and Methods: The present study was conducted on 196 unidentified CBCT scans selected from the archives of the Oral and Maxillofacial Radiology Department, Suez Canal University. Demographic data regarding (gender), side of impaction distribution and impaction angulation was assessed. Angulation of impacted third molar was evaluated using Winter’s classification, then radiographic assessment for each scan was carried out using On-Demand software to determine the presence and prevalence of coronal and radicular caries on the distal surface of the second molar adjacent to impacted mandibular third molars. Additionally, correlation of the associated risk factors for caries occurrence was carried out. Results: The results of the current study revealed that mesio-angular impaction was the most frequent type of impacted third molar (63.8%) followed by horizontal impaction (17.3%). The prevalence of DSC for both coronal and radicular distal caries, was 8.7% with relatively higher female predilection and higher occurrence in association with mesio-angular and horizontal types of impactions. Conclusion: Cone Beam Computed Tomography being a threedimensional imaging modality, is considered an accurate and precise radiographic modality that can be reliably used for early detection of distal surface caries. Moreover, the presence of DSC in mandibular second molar adjacent to impacted third molars among Ismailia population is relatively low and is more related to mesio-angular and horizontal type of impaction.
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