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首页> 外文期刊>American Journal of Orthodontics and Dentofacial Orthopedics >Bone and cortical bone characteristics of mandibular retromolar trigone and anterior ramus region for miniscrew insertion in adults
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Bone and cortical bone characteristics of mandibular retromolar trigone and anterior ramus region for miniscrew insertion in adults

机译：成人迷你螺钉插入的骨头肾上腺三角形和前拉米区域的骨骼和皮质骨骼特征

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Introduction: The aim of this study was to evaluate bone depth, cortical bone thickness, and vestibulolingual bone dimension of the mandibular retromolar trigone and anterior ramus region to evaluate what are its most suitable sites for miniscrew insertion in adults. Methods: The sample included cone-beam computerized tomography (CBCT) records of 60 adult subjects retrospectively evaluated. All CBCT examinations were performed with the use of an i-CAT CBCT scanner (Imaging Sciences International). Each exam was converted into DICOM format and processed with the use of Osirix Medical Imaging software. On reproducible sagittal scan views, bone depth and cortical bone thickness were evaluated on specific lines parallel and at a 45 degrees angle to the occlusal plane, and at 3 mm and at 6 mm distance from it. Vestibulolingual bone dimension was computed in 4 different cross-section scans and at 3 different levels of depth (0, 6, and 11 mm). Results: All of the considered insertion sites showed on average more than 10 mm of bone depth. Inferential statistics showed significantly (P 0.05) greater bone depth (+3 mm) in cross-sectional scans parallel to the occlusal plane compared with those at a 45 degrees angle to it. Cortical bone thickness showed average values from 3 mm to 5 mm. Vestibulolingual bone dimension showed a significant (P 0.05) reduction (-10 mm) in the posterior region of retromolar region. No significant differences were found between subjects with and without third molars. Conclusion: The retromolar trigone and anterior ramus region showed enough bone quantity and adequate bone quality for safe miniscrew insertion in adults.
机译：简介：本研究的目的是评估骨密度，皮质骨厚度和前颌骨结构的骨髓骨尺寸，以评估其成虫中迷你螺钉插入最合适的位点。方法：该样品包括锥形光束计算机断层扫描（CBCT）记录60个成年对象回顾性评估。使用I-Cat CBCT扫描仪（Mogaging Sciences International）进行所有CBCT检查。每个考试都被转换为DICOM格式，并通过使用Osirix医疗成像软件进行处理。在可重复的矢状扫描视图中，在平行的特定线上评估骨深度和皮质骨厚度，与咬合平面为45摄氏度，距离3mm和6mm。在4种不同的横截面扫描中计算了前纤维骨尺寸，3种不同的深度（0,6和11毫米）。结果：所有考虑的插入位点平均显示超过10毫米的骨深。与咬合平面平行于咬合平面的横截面扫描的横截面扫描中的骨深（+3mm）显着（p＆ 0.05）的推理统计显示。皮质骨厚度显示平均值3mm至5mm。门瓣骨尺寸在肾上辐井球区域后部显示出显着的（P <0.05）缩减（-10mm）。在有和没有第三磨牙的科目之间没有发现显着差异。结论：荆棘三角形和前脉冲区显示出足够的骨骼量和足够的骨质质量，以便在成人中突出的安全迷你螺钉插入。

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    Nucera Riccardo; Bellocchio Angela Mirea; Oteri Giacomo; Farah Athena Janan; Rosalia Leonardi; Giancarlo Cordasco; Portelli Marco;

  • 作者单位

    Univ Messina Sch Dent Sect Orthodont Dept Biomed &

    Dent Sci &

    Morphofunct Imaging Messina Italy;

    Univ Messina Sch Dent Sect Orthodont Dept Biomed &

    Dent Sci &

    Morphofunct Imaging Messina Italy;

    Univ Messina Sch Dent Sect Orthodont Dept Biomed &

    Dent Sci &

    Morphofunct Imaging Messina Italy;

    Univ Messina Sch Dent Sect Orthodont Dept Biomed &

    Dent Sci &

    Morphofunct Imaging Messina Italy;

    Univ Messina Sch Dent Sect Orthodont Dept Biomed &

    Dent Sci &

    Morphofunct Imaging Messina Italy;

    Univ Messina Sch Dent Sect Orthodont Dept Biomed &

    Dent Sci &

    Morphofunct Imaging Messina Italy;

    Univ Messina Sch Dent Sect Orthodont Dept Biomed &

    Dent Sci &

    Morphofunct Imaging Messina Italy;

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  • 中图分类 口腔科学;
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