义齿式(牙合)板治疗颞下颌关节紊乱病伴牙列缺损磨损探讨

目的 探讨用义齿式牙合板治疗伴有牙列缺损和牙体磨损的颞下颌关节紊乱病的效果.方法 对15例由于牙列缺损、余牙严重磨损等原因导致颞下颌关节紊乱病患者,应用义齿式牙合板修复缺牙,以恢复正常息止颌间隙、改善咀嚼功能.结果 经1～8年临床追踪,12例患者颞下颌关节症状消失,3例患者颞下颌关节症状明显减轻,全部病例均恢复咀嚼功能,治疗和修复效果满意.结论 义齿式牙合板可有效地治疗伴有牙列缺损和牙体磨损的颞下颌关节紊乱病病例.     

义齿式板治疗颞下颌关节紊乱病伴牙列缺损磨损探讨

目的 探讨用义齿式牙合板治疗伴有牙列缺损和牙体磨损的颞下颌关节紊乱病的效果.方法 对15例由于牙列缺损、余牙严重磨损等原因导致颞下颌关节紊乱病患者,应用义齿式牙合板修复缺牙,以恢复正常息止颌间隙、改善咀嚼功能.结果 经1～8年临床追踪,12例患者颞下颌关节症状消失,3例患者颞下颌关节症状明显减轻,全部病例均恢复咀嚼功能,治疗和修复效果满意.结论 义齿式牙合板可有效地治疗伴有牙列缺损和牙体磨损的颞下颌关节紊乱病病例.     

栓体栓道式附着体在下颌倾斜基牙固定修复中的应用

目的研究栓体栓道式附着体在下颌倾斜基牙固定修复中的临床应用效果。方法对20例下颌第二前磨牙或第一磨牙缺失,两端基牙牙体牙髓牙周组织正常,且向缺牙区倾斜,通过常规的牙体预备两基牙不能获得共同就位道的病例,利用栓体栓道式附着体进行固定修复。结果经过3年的随访观察,有2例患者固定桥栓体栓道连接部位出现松动,但修复体的咀嚼功能良好,无一例患者出现固位体的松动,基牙无松动,无牙髓牙周以及根尖周炎症。结论栓体栓道式附着体在下颌倾斜基牙固定修复中的应用效果较好。     

干扰在颞下颌关节紊乱病发病机制中作用的研究进展

颞下颌关节紊乱病病因复杂,多因素致病,其中[牙合]因素与其关系密切。[牙合]干扰可致牙尖交错位时上下牙尖窝接触不广泛、不密合,下颌运动型发生改变;通过破坏颞下颌关节正常的生物力环境,致使髁突发生适应性形态的改变和移位,进而影响关节盘厚度及位置的改变,引起关节疼痛、弹响,诱发颞下颌关节紊乱病。本文就[牙合]干扰对颞下颌关节结构与功能的影响作一综述。     

套筒冠义齿修复牙列重度磨耗的临床评价体会

目的：探讨套筒冠义齿修复重度磨耗[牙合]的临床效果。方法：对9例牙列重度磨耗的患者，进行套筒冠义齿修复（6例患者有颞下颌关节紊乱病），共制作套筒冠义齿12件，观察时间6—48个月，追踪患者主观感觉、咀嚼效果、义齿固位、稳定度及颞下颌关节紊乱病是否缓解；并通过X线片检查基牙牙周膜情况、基牙牙槽骨高度。结果：套筒冠义齿修复重度磨耗[牙合]后，患者自我感觉满意、能提高咀嚼效能，义齿固位稳定性好，颞下颌关节紊乱病疗效好，基牙牙周膜无明显异常，基牙牙槽骨无吸收。结论：采用套筒冠义齿修复牙列重度磨耗导致垂直距离下降的患者，可行而且有效。     

正畸矫治颞下颌关节紊乱病后牙锁

目的探讨采用正畸矫正后牙锁[牙合]的方法治疗颞下颌关节紊乱病的疗效。方法9例后牙段锁患者,健侧采用解剖式[牙合]垫,配合患侧的交互牵引,矫正锁[牙合],达到治疗患者颞下颌关节紊乱病的目的。结果9例患者经过平均30个月的治疗,锁[牙合]均得以矫治。前牙覆[牙合]覆盖正常,磨牙关系良好。9例患者颞下颌关节区疼痛消失或缓解,开口度明显改善,7例患者关节弹响消失,1例弹响减弱,1例未见好转。结论通过对锁[牙合]的矫治,改善咬合关系,可治疗因锁[牙合]引起的颞下颌关节疼痛。     

临床诊疗牙列缺损伴重度磨耗的研究进展

牙列缺损伴重度磨耗病例的临床表现包括缺牙区[牙合]龈间隙的不足，余留牙的牙体牙周组织的丧失，[牙合]曲线形态不良，副功能性的[牙合]习惯和不良饮食结构等，临床上有关此类病例的诊治，及其与颞下颌关节功能系乱症发生的关联和防治仍处于不断探索阶段。本文就近年来有关此类病例的[牙合]重建修复报道和研究作一综述．     

伴有颞下颌关节紊乱病的女性开骀患者的[牙合]干扰特征分析

目的探讨伴有颞下颌关节紊乱病（temporomandibulardisorders,TMD）的开[牙合]患者的[牙合][牙合]干扰特征。方法169例女性开[牙合]患者根据有无TMD分为伴有颞下颌关节紊乱病组（TMD（＋）组）和无颞下颌关节紊乱病组（TMD（一）组）,对两组患者治疗前的模型进行研究,来比较两组患者的早接触等[牙合]干扰特点。结果TMD（＋）组开骀患者中,57．8％的患者存在着正中颌位的[牙合]干扰,明显高于TMD（-）组（P〈0．05）。终末位置上的不稳定和由于磨牙的早接触引起的下颌前方偏移是伴有TMD的开[牙合]患者常见的两种咬合特征。结论本研究提示开[牙合]患者中早接触等功能性因素和颞下颌关节病的发病有关。     

面磨损伴牙列缺损重建修复效果探讨

牙列缺损的患者常伴有余留牙牙合面的重度磨损 ,使得垂直距离变低 ,咀嚼效率下降 ,严重者可导致颞下颌关节功能紊乱。目前国内外学者对此类病例的病因、治疗等方面进行了很多研究[1] 。牙合重建被认为是一种有效的修复治疗方法 ,而颌位关系的确定是牙合重建修复的关键。笔者采取先行调位性咬合板治疗 ,再行牙合重建修复 ,收到很好疗效。一、资料和方法1.研究对象 :选择牙合面磨损严重同时伴有牙列缺损的患者 17例 ,其中男性 11例 ,女性 6例 ,平均年龄 4 6岁。2 .治疗前颞下颌关节症状检查 :17例患者中有咀嚼肌群疼痛、关节区疼痛和关节弹响…     

三叉神经痛及下颌关节功能紊乱

本文报导典型的三叉神经痛同时有同侧下颌关节功能紊乱共100余例。这些病例,不但有神经痛症状,而且有各种颞下颌关节功能紊乱症状及由此引起的咀嚼肌肥大。功能紊乱是由于牙齿丧失或修复体有缺点而使(牙合)高度不足、牙齿移位或修复体不良引起的创伤(牙合)、下颌滑动受限引起的吞咽及(牙合)关系不平衡。许多患者除带有扳机点的阵发性刺痛外,还有因颞下颌关节功能紊乱引起的疼痛。有的患者还有钝痛、酸痛及放射痛的病史。处理应根据口颌生理学原则进行。使下颌在后退位及正中(牙合)位时处于平衡状态,有时须每半年调整下颌功能一次,才能使患者无痛及保持下颌正常生理状态。此病之原理可能是由于颌骨动、静脉之近心段及其分枝的循环障碍引起的。先是口     

Mood and malignancy: head and neck cancer and depression

Head and neck cancer patients have been reported to show high rates of depression. However, it is important to differentiate between depressive symptoms and a depressive disorder. This review critically examines the relationship between head and neck cancer and depression. There appears to be little evidence for depression leading to an increased risk of developing cancer and although depressive symptoms in head and neck cancer patients are common, very few studies have investigated depressive disorders. The studies that investigated the incidence of a comorbid depressive disorder report a prevalence very close to that of the general population, implying that major depression is not a normal response to cancer. Finally, the evidence suggests that comorbidity of depression with cancer has a negative impact on morbidity and mortality. Both psychosocial and biological factors could account for this. Dysregulation of the stress hormone axis and increased inflammation are common in depressive disorders and have been suggested as underlying pathological mechanisms and are both markers of poor prognosis in cancer. This evidence suggests that a relatively small number of patients develop a depressive disorder following a diagnosis of cancer, but for those that do it may have a substantial impact on their prognosis.     

低氧和自噬与肿瘤的发生发展

自噬作为真核生物的一种应激调控机制,既可以促进肿瘤的发生发展,又可以抑制肿瘤的增殖。在肿瘤局部低氧的微环境下,低氧诱导因子-1α、哺乳动物雷帕霉素靶蛋白信号转导通路抑制、内质网应激均可促进自噬的发生。在肿瘤快速地发生发展过程中,肿瘤的糖代谢功能增强、活性氧族增多、窖蛋白1下调以及上皮间质转化的激活均诱导了自噬的发生并促进肿瘤的局部浸润、侵袭转移和耐药,因此,抑制自噬可能为肿瘤治疗提供一种新的策略。     

Survey of Australian and New Zealand Oral and Maxillofacial Surgery trainees and recent specialists--education and experience

This study examined the demographic characteristics, educational background and attitudes toward training of all recent OMS specialists and all current trainees in Australia and New Zealand in 1996. The early nineties is a key period as it marks the transition from an essentially dentally based speciality (85% dental degree in 1990); to recent specialists with an increasing number with both medical and dental degrees (33% dual degree 1990-1996); to predominantly dual degree training (84.4% dual in 1996). Current trainees had more extensive experience in pathology, preprosthetic and reconstructive surgery. They were also strongly critical of the length and cost of training.     

Open bite and and therapeutic strategy

Anterior open bites can be divided into two categories: skeletal and dento-alveolar. The etiology, basically affecting dento-alveolar structures, is functional or mechanical such as the rotation of the first higher molars, the exaggerated curve of Spee and the incisor supraclusion and the simple orthodontic treatment can bring a therapeutic success but functional rehabilitation remains the guaranty of such a stability of our treatment. The purpose of this work is to make a teaching article which puts the point on the interest of the elements of the diagnosis and the orthodontic treatment indicated in certain clinical situations of anterior open-bite; this by detailing biomechanics of correction of this anomaly requiring various therapeutic strategies. Functional rehabilitation remains always the guaranty of such a therapeutic stability. For the teaching aspect, we want to attach stereotypic forms and also to present clinical cases treated in the service of consultation and dental treatment in order to answer such a request.