ArticleMedicina oral, patologia oral y cirugia bucal2026
Cone-beam CT evaluation of impacted mandibular third molars and their possible association with mandibular incisor crowding.
Article in Medicina oral, patologia oral y cirugia bucal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Article
- Association between mandibular third molar impaction pattern and mandibular crowding severity: a retrospective radiographic study.American journal of translational research · 2026Article
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Abstract
backgroundThe relationship between impacted mandibular third molars and mandibular incisor crowding remains controversial. This study aimed to evaluate whether the impaction pattern of mandibular third molars is associated with lower incisor crowding using cone-beam computed tomography (CBCT). MATERIAL AND
methodsA retrospective sample of 140 patients was analyzed, including 70 with unilateral and 70 with bilateral mandibular third molar impactions. Little's Irregularity Index (LII) was measured on CBCT images to quantify incisor crowding. Arch length, depth, intercanine width, and intermolar width were also recorded. Non-parametric tests were used to compare groups, and intra-observer repeatability was assessed.
resultsThe mean LII was 9.0±4.8, with 85% of patients showing some degree of crowding. Bilateral impaction cases presented significantly higher LII scores than unilateral cases (p=0.047). However, no significant differences were found in arch dimensions between groups, and LII was not associated with gender or age. Categorical analysis of crowding prevalence did not differ significantly between unilateral and bilateral groups.
conclusionsBilateral mandibular third molar impaction showed a weak association with greater mandibular incisor irregularity. Crowding is a multifactorial condition, and CBCT may provide additional insight into its assessment in patients with impacted third molars.
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