ArticleMedicina oral, patologia oral y cirugia bucal2024
Relationship between the impacted mandibular third molar and adjacent second molar' external root resorption by cone-bean computed tomography analysis.
Article in Medicina oral, patologia oral y cirugia bucal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.
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Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Association between impacted third molars and external root resorption on adjacent second molars based on cone-beam computed tomography: a systematic review and meta-analysis.BMC oral health · 2026Pooled it
- Anatomical Predictors of Second Molar External Root Resorption: A Cone-Beam Computed Tomography Study of Impacted Third Molars.International dental journal · 2026Article
- Influence of Enhancement Filter Application in Panoramic Radiographs in the Detection of External Root Resorption in Mandibular Second Molars Caused by Impacted Third Molars.Journal of imaging informatics in medicine · 2026Article
- CBCT-based evaluation of mandibular third molar impaction and its effects on adjacent second molars in a Saudi population: a retrospective study of 420 scans.BMC oral health · 2026Article
- Influence of impacted mandibular third molars on pathological changes on themselves and adjacent tissues across different age groups: a cross-sectional study.Journal of applied oral science : revista FOB · 2026Observational
- External root resorption of second molars caused by impacted third molars: CBCT characteristics.Oral and maxillofacial surgery · 2025Article
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4 authors.
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Abstract
backgroundThe relationship between the impacted mandibular third molar (IMTM) and the external root resorption (ERR) of the mandibular second molar (MSM) was analysed with cone-beam computed tomography (CBCT). The risk factors affecting the ERR of the MSM were examined to provide a reference. MATERIAL AND
methodsA total of 327 patients (total: 578 teeth) admitted to the Affiliated Hospital of Yanbian University for IMTM extraction from January 2017 to December 2019 was chosen and divided according to gender and age. The correlation between the IMTM and ERR of MSM was analysed, including inclination angle, impaction direction and depth. The relationship of mandibular ascending ramus classification with ERR of MSM was also analysed. In addition, the correlation between the MTM impaction type and the severity of ERR was analysed.
resultsThe incidence of ERR of MSM in male patients was higher than in females (27.9% vs.17.6%, p = 0.018). The occurrence and the site of ERR showed statistical differences in the inclination angle [(≤20°, 3.6%) vs. (21°-40°, 27.1%) vs. (41°-60°, 27.6%) vs. (61°-80°, 25.6%) vs. (>80°, 31.7%), p <0.001], impaction direction [(Vertical, 1.1%) vs. (Mesial, 32.7%) vs. (Horizontal, 25.3%), p <0.001] and depth of MTM [(Low position, 38.6%) vs. (Median position, 32.0%) vs. (High position, 13.7%), p <0.001]. Also, there was a significant difference in the mandibular ascending ramus type [(Class I, 17.4%) vs. (Class II, 32.3%) vs. (Class III, 44.9%), p <0.001]. In addition, the severity of ERR showed statistical differences in the mesial (40.9%, p<0.05), lower impaction (54.5%, p<0.05) depth of MTM and type III of mandibular ascending ramus (63.6%, p<0.05).
conclusionsThe inclination angle, impaction direction, and depth of MTM were the influencing factors for the occurrence and site of ERR. Also, mandibular ascending ramus type was the impact fact. For MTM with mesioangular, lower impaction, and mandibular ascending ramus with type III, the ERR of the MSM was severer.
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