Evaluation of the Bone Thickness of Mandibular Molars using Cone Beam Computed Tomography

IF 0.2 Q4 DENTISTRY, ORAL SURGERY & MEDICINE Journal of Dentistry Indonesia Pub Date : 2021-08-31 DOI:10.14693/jdi.v28i2.1253
Deniz Yanık, Ahmet Mert Nalbantoğlu
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Abstract

Objective: To investigate buccal and lingual bone thicknesses and fenestration rate of mandibular first and second molars using cone-beam computed tomography (CBCT). Methods: A total of CBCT images of 41 patients were selected and overall 120 mandibular molars were investigated. The buccal and lingual alveolar bone widths were measured at apex of the roots. The prevalence of fenestration in mandibular molars was recorded. Statistical analyses were performed. Results: The buccal bone widths of mesial root of second molars were significantly lower than the lingual (p<0.05). The lingual bone widths of mesial and distal root of second molars were lower than the buccal (p<0.05). The lowest thickness of buccal and lingual bone was observed in mesial root of first molar and distal root of second molar. The prevalence of fenestration in mandibular first and second molars was 5% and 10%. Conclusion: The buccal bone widths were lower at the first molar than the second molar. All fenestrations in first molar were in buccal aspect, in second molar were in lingual aspect. Topographical proximity of the buccal side of first molar and the lingual side of second molar to bone plate create a risky region for endodontic treatment or spread of infection.
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锥形束计算机断层扫描评价下颌磨牙骨厚度
目的:应用锥形束计算机断层扫描(CBCT)研究下颌第一磨牙和第二磨牙的颊舌骨厚度和开窗率。方法:选择41例患者的CBCT图像,对120颗下颌磨牙进行研究。在牙根尖测量颊侧和舌侧牙槽骨宽度。记录下颌磨牙开窗术的发生率。进行了统计分析。结果:第二磨牙近中根的颊侧骨宽度明显低于舌侧(p<0.05),近中根和远中根的舌侧骨宽度均低于颊侧(p<0.05。下颌第一磨牙和第二磨牙开窗的发生率分别为5%和10%。结论:第一磨牙的颊骨宽度小于第二磨牙。第一磨牙全部开窗均在颊侧,第二磨牙开窗均在舌侧。第一磨牙的颊侧和第二磨牙的舌侧与骨板的地形接近性为牙髓治疗或感染传播创造了危险区域。
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来源期刊
Journal of Dentistry Indonesia
Journal of Dentistry Indonesia DENTISTRY, ORAL SURGERY & MEDICINE-
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