Clinic Features and CBCT Presentation of Subtle Vertical Root Fracture in Endodontically Treated Teeth

doi:10.13701/j.cnki.kqyxyj.2020.07.009

Abstract

Abstract: Objective: To summarize the clinic features and radiographic manifestation on the CBCT images of subtle vertical root fracture (SVRF) in endodontically treated teeth. Methods: 92 patients with 97 SVRF teeth in endodontically treated teeth were collected in this study. The gender, age, and tooth position were analyzed. Fracture line, apical bone, and periodontal bone resorption were evaluated on the CBCT images. Results: Of the 92 patients, 64.1% were females and 35.9% were males. The age ranged from 26 to 84 years old, and the incidence rates among four age groups of 31-40, 41-50, 51-60, and 61-70 were not significantly different (all around 20%). The incidence of mandibular first molars was the highest (35, 36.1%), followed by the maxillary second premolars (18, 18.6%) and maxillary second premolars (17, 17.5%). Among the 97 SVRF teeth, 28 teeth presented with subtle fracture lines on the CBCT image. 97 SVRF teeth suffered from different degrees of bone resorption. Among them, 68 teeth (70.1%) presented with vertical bone resorption and periapical bone resorption, 28 teeth (28.9%) presented with vertical bone resorption, and only 1 tooth (1.0%) presented with periapical bone resorption. Conclusion: The occurrence of SVRF in endodontically treated teeth was higher in female patients than in male patients, and there was no significant difference between different age groups. SVRFs occurred mainly in mesial root of mandibular first molar and maxillary premolar, which was considered to be related with the morphology of root of these teeth. SVRFs often presented with varying degrees of vertical bone resorption.

Key words: subtle vertical root fracture, cone beam CT, bone resorption

CAO Dantong, Gvlbira·AHMAT, GAO Antian, CAO Ya, TAN Baochun, WANG Congyue, LIN Zitong. Clinic Features and CBCT Presentation of Subtle Vertical Root Fracture in Endodontically Treated Teeth[J]. Journal of Oral Science Research, 2020, 36(7): 644-647.

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