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- Result:the three-dimensional finite element method models of the maxillary second molar was constructed on the computer, which had 21809 nodes and 14449 tetrahedrons elements. 结果:在计算机上建立了上颌第二磨牙三维有限元生物力学分析模型,总节点为21809个,4面单元数为14449个。
- We chose nonextraction therapy to distalize maxillary second molars with facebow and headgear.The final result were excellent occlusal relationship and improved facial esthetic. 本病例在患者不愿拔牙及高度配合意愿下，将上颚第二大臼齿以面弓加上头帽往远心移动，并配合固定式之矫正装置，完成非拔牙的矫正治疗。
- Identifying and treating the second mesiobuccal root canal in maxillary second molars is improved by modified access preparation and probing the fissure or groove between the mesiobuccal and palatal canal orifices. 改良髓腔入口和探查近中颊根根管口与腭根根管口之间发育沟或暗线的方法,有利于发现和治疗上颌第二磨牙近中颊根第二根管。
- Construction of the three-dimensional finite element method models of the maxillary second molar by using CT scanning technique 上颌第二磨牙三维有限元模型的CT扫描建模
- maxillary second molar 上颌第二磨牙
- Objective To compare the differences between two connecting methods of the implant, i. e. connecting with the maxillary second bicuspid or with the first permanent molar. 摘要目的比较支抗种植体连接在上顿第二双尖牙和连接在上领第一恒磨牙两种连接方式加强磨牙支抗能力的差异。
- With respect to the protection of the anchorage of molar, it is more suitable for the palatal implant to connect with the first permanent molar than with the maxillary second bicuspid. 就保护磨牙支抗来说，种植体连接在上领第一性磨牙较之连接在上领第二双尖牙更加合适。
- Conclusion With respect to the protection of the anchorage of molar, it is more suitable for the palatal implant to connect with the first permanent molar than with the maxillary second bicuspid. 结论就保护磨牙支抗来说，种植体连接在上领第一性磨牙较之连接在上领第二双尖牙更加合适。
- Maxillary second permanent molar 上颌第二磨牙
- Objective:To introduce a method of mesio-translation of lower second molar. 目的:介绍一种下颌第二磨牙近中平移技术。
- Maxillary left second molar tooth 上颌左第二磨牙
- Maxillary right second molar tooth 上颌右第二磨牙
- In this article a new technique using the NiTi wire to upright the impacted lower second molar is introduced. 而在进行臼齿扶正时除考虑矫正装置之效率，方便性及病患舒适性之外，尚需考虑如何控制锚定，以避免造成锚定牙齿不必要的前移或挺出。
- Despite of food impaction and proximal caries of first permanent molar, impacted lower second molar also affect the normal function of occlusion. 除了影响正常咬合功能外，常因食物阻塞而伴随大臼齿间软组织发炎或第一大臼齿远心侧龋齿。
- Objective To investigate the displacements and the stress distributions of a mandibular second molar. 目的了解下颌第二恒磨牙不同载荷下近中移动时的位移及应力分布情况。
- To reinforce anchorage with second molar can prevent anchorage teeth movement mesially during canine distal movement. 将第二双尖牙、第一、第二磨牙连成整体，可减小尖牙远中移动时的支抗消耗。
- This article presents a 13-year-old female patient with an impacted maxillary second premolar which is incomplete root formation.The impacted tooth was surgically repositioned to normal occlusion. 本文报告一位13岁女性患者利用手术移位的方式将牙根尖尚未发育完全的上颚第二小臼齿直接移到正常的咬合位置。
- The spaces of lower first molar were all closed using mesiotranslation of lower second molar. 应用第二磨牙近中平移技术关闭第一磨牙拔牙间隙。
- This paper reports the root separation and tunneling therapy for the furcation treatment of mandibular second molar with narrow furcation entrance diameter. 本文提出有关下颚第二大臼齿根叉齿槽骨病变合并根叉入口径狭窄的牙齿分割合并牙冠隧道穿通术的牙周补缀治疗。
- When using the attachment prostheses to restore the type of the second molar distal-extension for the patient, we can use one teeth as abutment. 用该附著体修复第二磨牙末端游离缺损时,可采用单基牙。
