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深覆矫治过程中平面导板升高咬合垂直距离的肌电图研究
重度深覆 平面导板 升高距离 肌电活动
2010/8/23
目的研究平面导板辅助固定矫治器治疗重度深覆患者的早期，平面导板戴入后患者的颞肌前束（TA）和咬肌（MM）在静息状态下的肌电活动变化，探讨平面导板戴用过程中咬合垂直距离的最佳升高距离。方法选择重度深覆患者36例，随机分为D、D+2和D+4共3个试验组，戴入平面导板后的咬合升高距离分别为息止间隙、息止间隙加2 mm、息止间隙加4 mm。另外选择34例个别正常个体作为对照组。利用肌电仪分析试验组患者治疗...
目的建立计算机辅助的牙槽骨密度定量测量系统，并通过样本测试检验系统的测量准确性及灵敏度，实现对牙槽骨中羟磷灰石（HP）含量的估测。方法在X线骨密度测量法基础上利用定位投照的直接数字化牙片，以铝梯为参照校正投照条件差异导致的影像灰度误差，辅以计算机技术建立牙槽骨密度定量测量系统。用该系统测量HP含量不同的19个样本的平均灰度值，根据已知的铝梯灰度和厚度推算这些灰度值对应的等效铝厚度和校正灰度。建立等...
Evaluation of Alveolar Bone Regeneration Using Small Three-dimensional Image Analysis of Computed TomographyFindings After Periodontal Regenerative Therapy : A Case Report
small X-ray computed tomography for dentistry guided tissue regeneration Emdogain® gel aggressive periodontitis alveolar bone regeneration
2009/5/27
Small three-dimensional (3D) image analysis of computed tomography findings (3DX®) can be used in dentistry to evaluate alveolar bone defects using 3D digital images with a width in the range of 4...
Relationship between the Bone Mineral Density of Mandible by Quantitative Computed Tomography and Lumbar Spine by Dual Energy X-ray Absorptiometry
quantitative computed tomography (QCT) mandible bone mineral density (BMD) osteoporosis periodontal disease
2009/5/27
Osteoporosis is a systemic skeletal disorder characterized by low bone mass. Periodontitis is an inflammation of the supporting tissues of the teeth, usually leading to loss of alveolar bone. The purp...
Displaying the Bottom of Periodontal Pockets Using Dental Equipment for Digital X-Ray Imaging
dental digital X-ray imaging equipment retraction cord with copper filament bottom of periodontal pocket
2009/5/20
We determined whether the bottom of periodontal pockets can be visually confirmed using digital X-ray imaging involving the insertion of Stay-put® (Roeko, Germany), a retraction cord with a copper...
Pain relief effects by Nd: YAG laser irradiation following flap surgery
Nd: YAG Laser Visual Analogue Scale (VAS) Pain Relief Flap Operation
2009/5/20
The aim of this study was to compare pain relief effects after periodontal flap operation between Nd: YAG laser irradiation and the administration of anti-inflammatory drugs in the same patients using...
A Case Report : Recovery of Interdental Papillae
interdental papilla initial periodontal therapy self-care
2009/5/6
This case study reports on the successful recovery of interdental papillae, which had previously receded during the initial periodontal recovery, through appropriately-timed cleaning with oral self-ca...
The Effect of X–Ray Vertical Angulation on Radiographic Assessment of Alveolar Bone Loss
X–Ray Vertical Angulation Radiographic Assessment Alveolar Bone Loss
2009/4/2
Introduction: Radiographs provide unique information about the status of periodontium and
permanent records of condition of bone throughout the course of the disease. Interproximal images record th...
壮族人群恒前牙根管弯曲度测定
壮族人群 恒前牙根管 弯曲度 测定
2010/8/13
目的了解壮族人群恒前牙的根管弯曲情况。方法收集新鲜拔除的壮族人群恒前牙245颗，采用间接影像学手段观察其根管类型和弯曲状，在Schneider法和Sch覿fer法的基础上，结合电子测量尺软件测量分析218颗Ⅰ型根管牙齿的弯曲度、弯曲半径和弯曲长度。结果壮族人群恒前牙以Ⅰ型根管为主，有13颗下颌中切牙和12颗下颌侧切牙为Ⅱ、Ⅲ、Ⅳ型根管。上颌中切牙、侧切牙、尖牙以及下颌中切牙、侧切牙、尖牙Ⅰ型根管近...
硬化牙本质粘接界面纳米渗漏的激光扫描共聚焦显微镜观察
粘接 硬化牙本质 激光扫描共聚焦显微镜
2010/8/18
目的使用激光扫描共聚焦显微镜（CLSM）观察牙颈部硬化牙本质在全酸蚀和自酸蚀粘接系统形成粘接界面的纳米微渗漏情况。方法选取12颗因牙周病拔除的具有典型楔状缺损的上颌前磨牙为实验组，随机分为3组；选取12颗新鲜拔除的无龋人上颌前磨牙为对照组，人工形成楔状缺损，随机分为3组。选用3种牙本质粘接系统，即Single Bond（SB）、Clearfil SE Bond（CB）、Xeno Ⅲ（XB），按照厂...
种植义齿的上部结构和咬合设计
种植义齿 上部结构 咬合
2014/3/21
由于种植牙与天然牙不同的结构特性，种植义齿上部结构和咬合设计与天然牙也应有所区分。目前，咬合对于种植治疗的重要性已引起研究者们的关注。多方面的咬合因素对种植义齿的长期稳定性和修复体的成功率影响较大。咬合过载、非轴向力和悬臂等因素可引起种植体骨吸收甚至种植修复的失败。本文就近年来种植修复中的上部结构和咬合设计关系的发展现状作一综述。
多层螺旋CT技术在颌面部牵张成骨术中的应用
螺旋CT 颌面 牵张成骨
2010/9/8
目的探讨多层螺旋CT重建技术在颌面部牵张成骨中的应用方法和价值。方法在12例颌面部牵张成骨患者中应用多层螺旋CT扫描，进行三维及断层图像重建，测量骨牵开距离、牵开区骨厚度和骨密度等指标，考察牵引和成骨效果。结果多层螺旋CT三维重建图像清晰、细致，可各向旋转，有利于观察骨质和骨量；根据具体需要，可利用数据资料及Mimics等软件在个人电脑上重建断层图像，进行直观观察并可测量骨牵开区距离、厚度、密度等...
应用显微超声技术进行根管再治疗的临床评价
根管治疗 显微超声仪器 治疗效果
2010/8/18
目的探讨牙科手术显微镜结合超声工作器械进行根管再治疗的临床效果。方法选取需要进行根管再治疗的111例患者的124颗患牙164个根管为研究对象，使用显微超声技术进行再治疗，统计根管再治疗的成功率。结果124颗患牙中，103颗完成了根管再治疗并获得临床功，其成功率为83.06%；按根管数计算，164个根管有136个治疗成功，成功率为82.93%。按根管数计算，去除根管钙化物和取根管内塑化物的成功率分别...
Radiographic Alveolar Bone Loss in Patients Undergoing Periodontal Maintenance
Periodontics Alveolar bone loss Radiography
2010/12/1
The aim of the present cross-sectional investigation was to evaluate percentage of bone loss in patients who had been one year under periodontal maintenance at the Department of Periodontology, Facult...