International dental journal · 2026
Periapical Lesion Grade and Sinus Mucosal Thickness in Severe Periodontitis.
СтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
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Tang Wenyu, Chen Fanghui, Qin Pingchuan, Cui Xinrui, Xehesbek Botakoz, Wen Yahong, Wang Jizhou, Li Ang, Zhu Chunhui
Аннотация
INTRODUCTION AND AIMS: Severe periodontitis (Stage III-IV) frequently coexists with apical periodontitis, both of which can contribute to Schneiderian membrane thickening (SMT). This study quantifies the association between periapical lesion severity and SMT in a well-defined cohort of severe periodontitis, aiming to improve the preoperative risk assessment using cone-beam computed tomography (CBCT).
METHODS: CBCT images from 330 patients diagnosed with Stage III-IV periodontitis complicated by apical periodontitis in maxillary posterior teeth were analysed. SMT was measured at standardised sites, and periapical lesion severity was graded using the CBCT periapical index (CBCT-PAI). Differences in SMT according to sex, periodontal stage and tooth position were evaluated, and correlations between CBCT-PAI and SMT were assessed using nonparametric tests and Spearman's rank correlation.
RESULTS: Increased SMT was observed in both stage III and stage IV periodontitis, no significant difference between stages. SMT also exhibited a bilateral distribution pattern. Analysis of individual teeth revealed that the SMT showed a modest but statistically significant correlation with the severity of apical periodontitis (Stage III: ρ = 0.213, P < .001; Stage IV: ρ = 0.244, P < .001). Notably, SMT was particularly pronounced in the maxillary first molar (P < .001), which may reflect their close anatomical relationship with the sinus floor.
CONCLUSION: In patients with severe periodontitis, SMT showed a modest association with the severity of coexisting apical periodontitis. Differences in SMT distribution were observed across different tooth positions; this may also be related to anatomical and functional factors.
CLINICAL RELEVANCE: These findings provide supportive information for preoperative periodontal and dental assessments in patients requiring implant surgery, and may assist in preoperative risk assessment.
METHODS: CBCT images from 330 patients diagnosed with Stage III-IV periodontitis complicated by apical periodontitis in maxillary posterior teeth were analysed. SMT was measured at standardised sites, and periapical lesion severity was graded using the CBCT periapical index (CBCT-PAI). Differences in SMT according to sex, periodontal stage and tooth position were evaluated, and correlations between CBCT-PAI and SMT were assessed using nonparametric tests and Spearman's rank correlation.
RESULTS: Increased SMT was observed in both stage III and stage IV periodontitis, no significant difference between stages. SMT also exhibited a bilateral distribution pattern. Analysis of individual teeth revealed that the SMT showed a modest but statistically significant correlation with the severity of apical periodontitis (Stage III: ρ = 0.213, P < .001; Stage IV: ρ = 0.244, P < .001). Notably, SMT was particularly pronounced in the maxillary first molar (P < .001), which may reflect their close anatomical relationship with the sinus floor.
CONCLUSION: In patients with severe periodontitis, SMT showed a modest association with the severity of coexisting apical periodontitis. Differences in SMT distribution were observed across different tooth positions; this may also be related to anatomical and functional factors.
CLINICAL RELEVANCE: These findings provide supportive information for preoperative periodontal and dental assessments in patients requiring implant surgery, and may assist in preoperative risk assessment.