查看更多>>摘要：N6-腺苷酸甲基化（m6A）是真核细胞中最丰富、分布最广泛的RNA内部修饰，参与多种细胞基因表达调控与生物学过程。近年来，m6A修饰在口腔领域中的作用研究逐渐增多。研究显示，多种m6A相关蛋白参与调控口腔鳞状细胞癌的发生发展及其对药物的耐受性；甲基化转移酶样蛋白3参与调控软骨细胞的凋亡和自噬、内皮祖细胞的血管生成和成骨能力、牙髓细胞的炎症反应、牙髓干细胞的分化和成骨过程、牙根的发育过程以及骨髓间充质干细胞的方向等；m6A修饰亦可能与牙周炎、口腔溃疡及口腔黏膜下纤维化的发病有关。这些研究为多种口腔疾病的发病机制和口腔骨组织修复及再生的研究提供了新思路。本文总结近年 m6A 修饰在口腔领域中的作用相关研究现状及进展，旨在为进一步研究m6A在口腔领域中的作用和机制提供参考。 N6-methyladenosine (m6A) is the most abundant and widely distributed internal RNA modification in eukaryotic cells, and it is involved in the regulation of gene expression and biological processes in many cells. In recent years, studies on the role of m6A modification in oral cavity have emerged gradually. Existing researches show that m6A-related proteins are involved in the regulation of oral squamous cell carcinoma and its resistance to therapy. Methyltransferase-like 3 regulates apoptosis and autophagy of chondrocytes in inflammation, the angiogenesis and osteogenesis during distraction osteogenesis of endothelial progenitor cells, inflammatory response of dental pulp cells, the differentiation and osteogenesis of dental pulp stem cells, the development of tooth roots and the differentiation of bone marrow mesenchymal stem cells and so on. Moreover, m6A modification may also be related to the occurrence and development of periodontitis, oral ulcers and oral submucosal fibrosis. These studies have provided new ideas for the pathogenesis of various oral diseases and the diagnosis and treatment of oral bone tissue repair and regeneration. This paper reviews the recent research progress on the role of m6A modification in the field of stomatology and summarize the current research status of m6A in the field of stomatology, in order to provide reference for the further research of m6A function and mechanism in the field of stomatology.
查看更多>>摘要：良好的前牙转矩控制对取得理想的正畸疗效具有重要意义。无托槽隐形矫治器有特殊的施力方式及材料性能，其对前牙转矩的控制有一定局限。因此，探讨如何提高无托槽隐形矫治技术中前牙转矩控制具有重要临床意义。本文阐述传统固定矫治技术对前牙转矩控制的方法，无托槽隐形矫治器对前牙转矩控制的效率、难点以及增强前牙转矩控制的策略，以期为临床治疗提供参考。 Appropriate torque control of anterior teeth is of great significance to obtain ideal orthodontic treatment outcome. Clear aligners are less effective in torque control of anterior teeth due to their special application mode and material properties. Therefore, it is important to investigate how to improve the torque control of anterior teeth by using clear aligners, with the expectation of providing guidance for clinicians. This article discussed the methods to control the torque of anterior teeth by using traditional fixed appliances, the efficiency of clear aligner in controlling the torque of anterior teeth, the difficult points of clear aligner in controlling the torque of anterior teeth and the therapeutic methods to better control the torque of anterior teeth by using clear aligners.
查看更多>>摘要：无托槽隐形矫治的成功依赖于合理的方案设计、良好的患者配合以及高质量的复诊监控。高质量的复诊监控要求正畸医师能较好地完成对牙齿移动的实时监测，包括评估牙齿位置是否与矫治方案一致，以及根骨关系是否安全合理。然而，临床上进行频繁的放射性检查并不现实。在数字化技术快速发展的今天，基于生物力学原理、图像处理算法及多模态数据融合的方法均显示出监测牙齿移动的临床应用潜力。本文对这些方法的研究进展及其在监测牙齿移动的应用逐一介绍，以供临床医师参考。 The success of clear aligner treatment relies on rational treatment planning, favorable patients' compliance and high-quality clinical dental monitoring. High-quality clinical dental monitoring involves not only evaluation of real-time tooth position and treatment-designed tooth position, but also the assessment of the root-alveolar bone relationship. However, fluent imaging tests with ionizing radiation are not realistic in clinical practice. Regarding the rapid advances in digital techniques, biomechanism based method, image processing algorithm-based method and multimodal data fusion-based method all exhibit great potential in monitoring tooth movement. This paper introduced the progress and clinical application in those methods for clinicians′ reference.
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