Oral Verrucous Hyperplasia: A Case Report

Oral verrucous hyperplasia is a whitish or pinkinsh elevated pre malignant lesion which occurs rarely. Its is also considered to be an early form of verrucous carcinoma. We have reported a case of verrucous hyperplasia which was diagnosed and treated with buccal fat pad as graft.     

跟痛症病因的研究进展

跟痛症是一种临床上常见多发疾病,中老年患者多见。其病因及发病机制比较复杂,一直以来争议较多。通过总结临床工作和国内外文献对跟痛症病因及其发病机制加以阐述。     

健康成人戴用软(牙合)垫紧咬运动时脑激活区域的功能性磁共振成像研究

目的　应用功能性磁共振成像技术探讨戴软垫紧咬运动时人脑功能活动区域定位,试图从中枢机制探 讨垫的治疗作用机理。方法　选取10名健康成人受试者,采用时段设计,任务状态与休息状态交替。任务状态 分2组设计,实验组为戴软垫紧咬运动,对照组为不戴软垫紧咬运动。采用Elscint GE2.0T磁共振系统成像, 应用SPM99软件进行数据后处理及组分析。结果　实验组10名受试者在单侧或双侧的运动皮层、感觉皮层、前额 叶皮层、颞叶皮层、前运动皮层、脑岛、额盖、基底神经节壳核、顶叶皮层及扣带回等区域有明显激活。组分析结果 显示双侧运动皮层(BA6)、右侧感觉皮层、双侧基底神经节壳核、双侧脑岛等区域均出现明显激活,其中左侧运动皮 层的激活程度明显强于右侧。对照组紧咬运动组分析结果显示双侧运动皮层(BA6)、双侧感觉皮层、双侧基底神经 节壳核、左侧顶叶皮层等区域均出现明显激活,其中运动皮层的激活双侧基本对称。结论　戴软垫后紧咬运动 脑皮层激活区域尤其是运动皮层和感觉皮层的变化可能是垫作用机理的中枢机制。     

Electric heating pad burns

Patients with sensory deficits are especially prone to heating pad burns. Two cases are reported of patients with anesthetic skin who received partial and full-thickness burns of their feet from an electric heating pad. These burn injuries could have been prevented if the patients understood the potential hazard of heating pads.     

膝关节髌下脂肪垫囊肿的诊断及关节镜治疗4例报告

我所共收治 4名膝关节髌下脂肪垫囊肿患者 ,发现膝关节前方肿物后逐渐出现伸膝时疼痛 ,经MRI检查诊断为膝关节髌下脂肪垫内囊肿。 2例囊肿为多房性 ,2例为单房性。 4例患者均接受关节镜下囊肿切除术。手术前囊肿内注射美蓝以帮助确定切除范围。由于囊肿后壁与半月板前角相邻 ,手术中半月板前角滑膜边缘处破裂 ,其中 2例因破口大于 1cm予以关节镜下缝合修补半月板前角 2针。所有患者均经伸膝夹板固定 2周 ,经关节功能康复后 ,症状消除。     

带蒂颊脂垫在口腔颌面部肿瘤切除术后缺损修复损中的应用

目的探讨带蒂颊脂垫在口腔颌面部肿瘤切除术后缺损修复中的临床价值。方法选择我院2009年7月至2011年3月收治的择期行口腔颌面部肿瘤切除术患者74例,给予蒂颊脂垫填充于口腔颌面部组织缺损处,创面加压缝合,对颊脂垫愈合情况和疗效进行观察。结果术后共52例(70.3%)患者后接受随访,平均随访为(13.5±4.4)个月,颊脂垫表面完全上皮化,与周围正常黏膜组织在色泽、弹性、质地、光滑度方面基本相同,颊脂垫均成功愈合和成活,未见局部血肿、坏死液化、张口受限、腮腺管损伤或面部不对称等不良反应。结论带蒂颊脂垫修复口腔颌面部肿瘤切除术后缺损操作简单、易获取、成活率高、安全,是口腔颌面部肿瘤切除术后缺损修复的良好材料。     

Evaluation of masticatory activity during unilateral single tooth clenching using muscle functional magnetic resonance imaging

Masticatory muscle activity during teeth clenching is affected by occlusal pattern. However, few studies have performed simultaneous evaluation of all masticatory activities during teeth clenching under various occlusal conditions. The aim of this study was to use muscle functional magnetic resonance imaging (mfMRI) to evaluate the effects of changes in occlusal point on masticatory activity during single tooth clenching. Changes in mean proton transverse relaxation time (?T2) as an index of activity in all masticatory muscles during left unilateral clenching at the first molar or first premolar for 1 min were examined in nine healthy volunteers. Bite force was maintained at 40% of the maximum voluntary clenching force. The ?T2 values of the masseter and lateral pterygoid muscles were analysed separately for superficial and deep layers, and for superior and inferior heads. The ?T2 values for the ipsilateral deep masseter were significantly lower, and for the superior head of the ipsilateral lateral pterygoid muscles were significantly higher, after left first premolar clenching compared to left first molar clenching. These results quantitatively demonstrate a significant increase in activity of the superior head of the ipsilateral lateral pterygoid muscle and a significant decrease in activity of the ipsilateral deep masseter muscle with forward displacement of the occlusal contact point during unilateral tooth clenching.     

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咬合是口颌系统的重要功能,对引导口颌系统完成生理功能活动及维持全身健康具有重要作用。各种的畸形与紊乱,如错、牙体磨耗、牙体缺损、不良修复等均可引发咬合疾病,干扰作为临床上常见的咬合紊乱,被多数学者认为是导致口颌系统异常的因素之一。本文就干扰对口颌系统及全身健康的影响进行综述。