瓷贴面与纳米树脂修复上前牙切角缺损的对比研究

目的：比较瓷贴面和纳米树脂修复上前牙切角缺损的临床疗效。方法：对上前牙切角缺损患者行瓷贴面修复或纳米树脂修复,1年后对其修复效果进行评估。结果：瓷贴面在修复体颜色、边缘密合度、牙髓反应方面,均优于纳米树脂修复。结论：瓷贴面用于上前牙切角缺损的修复可取得比较好的临床效果。     

临床应用预成瓷贴面的短期观察

随着烤瓷技术的不断发展，瓷贴面修复在治疗前牙变色；发育不全；前牙间隙；及畸形错位牙等方面得到越来越广泛的应用。与常规瓷贴面相比，预成瓷贴面具有简便快捷的特点。笔者应用此项技术对２８例上前牙进行了美容修复治疗。其中变色牙１６例，树脂贴面磨耗重新修复８例...     

Cerinate瓷贴面在牙齿美容修复中的临床应用

目的：通过对58例患者382颗瓷贴面修复效果的临床观察,评价该技术在牙科美容中的作用.方法：门诊选择382颗需要美容修复的前牙和前磨牙,使用Cerinate瓷贴面修复系统进行修复,于修复后1周、6个月、1年、2年、3年和5年复诊,对患者满意度、贴面脱落、折裂、边缘适合性、修复体颜色及牙龈健康情况等进行评价.结果：临床调查结果显示,1年内100%的瓷贴面具有良好的边缘适合性及牙龈健康状况,修复体色泽稳定,有2个修复体折裂重新制作,3个脱落并再行粘结,1颗牙出现加重的敏感症状而行根管治疗术.所有患者对修复效果均非常满意.结论：Cerinate瓷贴面修复系统是一种可靠的、理想的前牙美容修复方法.     

E-max铸瓷贴面前牙美容修复的临床效果评价

目的评价E—max铸瓷贴面在前牙美容修复中的临床应用效果。方法对185颗前牙行E-max铸瓷贴面修复．术后1、6、12个月复查，从瓷贴面完整度、边缘适合性、牙龈健康状况、牙敏感程度、颜色匹配度等方面评价修复效果。结果1、6、12个月复查时，各有1个贴面发生近中切端小缺损，各有17、14、7个贴面边缘卡探针，各有5、3、1颗牙有牙龈炎症。1个月后复查7颗牙有轻度冷热敏感，6个月后敏感消失。所有贴面颜色与邻牙协调。结论E—max铸瓷贴面修复前牙具有较好的美观效果。     

伴TMD的成人正畸患者心理健康状况调查与分析

目的:探讨伴颞下颌关节紊乱病(TMD)的成人正畸患者的心理健康状况。方法:应用90项症状清单(Self-reportingInventory,SCL-90)对42例伴TMD的成人正畸患者(实验组),50例无正畸需求的伴TMD的成人错人群(对照组)进行测试,结果进行t检验。结果:2组测试在强迫症状、抑郁、焦虑、偏执、人际关系敏感因素上得分高于全国成人常模(P<0.05)。实验组在强迫症状、抑郁、焦虑、人际关系敏感因素上得分与对照组有显著性差异(P<0.05)。结论:伴颞下颌关节紊乱病的成人正畸患者存在一定程度的心理问题。     

IPS-EMPRESSⅡ全瓷修复变色牙的临床效果

目的 观察IPS-EMPRESSⅡ全瓷材料对变色牙的修复效果.方法 对30例四环素上前牙和30例变色死髓上前牙分别采用IPS-EMPRESSⅡ全瓷贴面和全瓷冠修复.用ShadeEye-NCC电脑比色仪测定修复前后的L、a、b值,根据公式色差△Eab=(△L2+△a2+△b2)1/2、Lab=L、Cab=(a2+b2)1...     

瓷贴面与全瓷冠修复材料的应用研究现状

瓷贴面与全瓷冠具有优良的美学和生物学特性，临床应用越来越广。长石质烤瓷、铸瓷和铝瓷3类全瓷修复材料均可用于瓷贴面和全瓷冠修复。修复后的远期抗折强度有赖于严格的适应证控制、规范化的牙体预备、高精度的瓷贴面制作技术、有效地表面处理和树脂粘接技术等。而瓷修复体的颜色受基牙颜色、粘接材料的颜色、瓷面底层材料的遮色性、瓷面的厚度及透光性等因素的影响。本文就瓷贴面与全瓷冠材料的种类、特性、临床应用及其相关实验研究进行综述。     

前牙超薄瓷贴面美学修复32例临床疗效观察

目的：评价超薄瓷贴面前牙美容修复的临床效果。方法：因四环素牙、氟斑牙、牙釉质发育不全、牙间隙过大、牙齿缺损、增龄性变黄等原因需行前牙美容修复的患者32例,108颗牙,用超薄热压铸瓷贴面进行修复。术后1、6、12、24、36个月,按照美国公共健康协会的修正标准（USPHS）进行评估。结果：经过3年的临床观察,108颗瓷贴面中有2颗折裂,修复体成功率98．1％。吸烟患者的边缘着色率明显高于不吸烟患者。结论：超薄热压铸造瓷贴面具有磨除牙体组织少、瓷贴面修复体强度高等特点,具有良好的临床修复效果。     

下颌切牙Empress 2瓷贴面与全瓷冠牙预备体及全瓷修复复合体的抗折裂研究

目的比较下颌切牙Empress 2瓷贴面和全瓷冠牙预备体及修复体粘接后复合体的抗折强度。方法选择人离体下颌切牙50颗,随机分为5组。A组为瓷贴面牙体预备组,B组为全瓷冠牙体预备组,C组为瓷贴面修复组,D组为全瓷冠修复组,E组为完整下颌切牙（对照组）。采用标准化牙体预备过程,Empress 2铸瓷系统及树脂粘接技术完成瓷贴面-牙体和全瓷冠-牙体复合体。使用Instron万能试验机测试5组牙齿的抗折裂载荷值,采用方差分析进行统计学分析。结果A、B、C、D、E组的抗折裂载荷值分别为：（576.11±91.53）、（204.13±85.88）、（451.50±116.81）、（386.16±117.75）、（566.05±121.37）N。经统计学分析,B组抗折裂载荷值低于其他组（P<0.01）;A、E组间的差异无统计学意义,其值最高,高于其他组（P<0.05）;C、D组间的差异也无统计学意义,其值低于A、E组,但高于B组（P<0.05）。结论下颌切牙瓷贴面预备后,牙体抗折能力无明显降低。下颌切牙Empress 2瓷贴面与全瓷冠粘接后,2种复合体的抗折裂能力无明显区别。     

前牙E-max铸瓷贴面的临床应用

目的观察瓷贴面在前牙美容修复中的应用及其临床效果。方法通过19位患者46颗前牙行E-max铸瓷贴面修复,随访两年,定期检查其临床指征如修复体完整度、颜色满意度、边缘适合性、术后敏感、牙龈炎性反应等,并对其进行评价。结果经过两年的临床观察,瓷贴面的存留率约为92%;约有5%的患者认为颜色或透光度略有不协调,但均能接受;13%的患者初期有轻度冷热刺激敏感,症状随时间的延长均有好转;2%的修复体龈缘出现轻微充血;95%的修复体边缘适合性良好。结论 E-max全瓷贴面美容修复前牙,其牙体预备少,颜色美观自然,是一种可靠、理想的前牙美容修复技术。     

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.