CBCT evaluation of anterior loop length and mental foramen position in Vietnamese Population (CBCT Evaluation of Anterior Loop Length)

Quang H. Nguyen, P. J. Putra, H. Nguyen, H. Giap, Florenly Florenly
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Abstract

Objective: The purpose of this study was to evaluate the prevalence and length of anterior loop, and determine the accurate position of the mental foramen in Vietnamese population. Material and Methods: One hundred and twelve CBCT scans taken within July 2017 until February 2020 were used in this study. All images were evaluated using OsiriX DICOM Viewer. The loop length on both side of the mandible was assessed using oblique transverse method by one examiner based on a standardized procedure. The data collected were analyzed using SPSS ver.26.0. Results: The prevalence of the loop was 92.9% of the sample. The mean of anterior loop length was 1.72 ± 1.00mm. There was no significant difference between genders or sides of the mandible. The most common position of the mental foramen was in line with the axis of the second premolar and below the apices of the premolars. Conclusion: Cautions should be taken when placing implant in proximity to the mental foramen as anterior loop is present in most of the case. Based on this study, it is considered safer to place implant 5mm anterior to the mental foramen for Vietnamese population.
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CBCT评价越南人群前环长度和颏孔位置(CBCT评价前环长度)
目的:本研究的目的是评估越南人群前环的患病率和长度,并确定精神孔的准确位置。材料和方法:本研究使用了2017年7月至2020年2月期间拍摄的112张CBCT扫描。使用OsiriX DICOM Viewer对所有图像进行评估。下颌骨两侧的环长度由一名审查员根据标准化程序使用斜横法进行评估。收集的数据使用SPSS ver.26.0进行分析。结果:该环的检出率为92.9%。前袢平均长度为1.72±1.00mm。不同性别、不同侧位的下颌骨差异无统计学意义。颏孔最常见的位置是在第二前磨牙的轴线上和在前磨牙尖以下。结论:在靠近颏孔放置种植体时应注意,因为大多数病例存在前环。基于本研究,越南人群认为种植体放置在颏孔前5mm更为安全。
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审稿时长
16 weeks
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