维吾尔族百岁老人唾液免疫球蛋白与口腔粘膜状况

目的：研讨百岁老人唾液免疫球蛋白与口腔粘膜健康间的关系。方法：采用上海长征医学科学有限公司生产的免疫球蛋白及补体试剂盒,用分光光度计,对２３名维族百岁老人和２１名维族老年人的唾液进行检测。结果：百岁组唾液ＩｇＡ、ＩｇＧ、ＩｇＭ及Ｃ３、Ｃ４含量均高于老年组。经统计学处理两组唾液ＩｇＡ有显著差异（Ｐ＜０．０５）。百岁组上唇、颊、腭粘膜均无异常,下唇粘膜１２例无异常,白斑１例,粘膜老年斑１例,血管痣９例,舌１３例正常。结论：百岁老人唾液免疫球蛋白及补体含量维持在相当于老年水平,对维持口腔粘膜正常有重要意义,也可能为有利长寿的因素之一。     

龋患维吾尔族百岁老人唾液中19种微量元素检测探讨

目的：检测患龋维族百岁老人（Ｉ组）唾液中１９种微量元素含量，并与中青年龋病组（Ⅱ组）、正常组（Ⅲ组）相比，观察微量元素与龋病关系，以便防治。方法：用等离子光量计分析技术（ＩＣＰ－ＡＥＳ）。结果：发现Ⅰ组与Ⅲ组比，Ｍｏ、Ｃａ、Ｐｂ、Ｃｕ、Ｓｒ差别有显著或高度显著性，Ｃｄ、Ｃｒ、Ｔｉ可能有差异。而Ⅱ组、Ⅲ组相比，Ｍｏ、Ｍｇ差别有显著性，Ｂａ、Ｚｎ、Ｃａ、Ｍｎ近于差异。除Ｍｏ、Ｃａ与两有龋组存在共性，其它元素因年龄不同而有别。结论：检测提示Ｍｏ、Ｃａ、Ｐｂ、Ｃｕ、Ｓｒ的差异，可能为百岁老人致龋因素之一。     

检测汉、维族青年唾液中一氧化氮检测比较

目的:了解汉维族青年在相同条件下唾液中一氧化氮(NO)含量的差异。方法:选择健康汉族青年136名(男女各68名),维族150名(男43名女107名)年龄16～18岁,按国内报道采集唾液,由专业人员,用第三军医大学临床微生物研究室产的“一氧化氮检测试剂盒”,进行比色检测,计算唾液中NO量。结果:维族组唾液NO均值为109.760±57.038)μmol/L,汉族组唾液NO均值为(75.181±47.740)μmol/L,维族高于汉族,有高度显著性差异(P<0.01)。在性别上,维族女性唾液NO均值为(109.533±47.369)μmol/L,汉族女性为(83.647±48.759)μmol/L,存在高度显著性差异(P<0.01),两族男性之间无差异(P>0.05)。两族正常口腔者与龋、龈炎者的唾液NO均值三者间无显著性差异(P>0.05)。结论:唾液中NO含量,可因种族和女性而有差异     

维吾尔族百岁老人唾液一氧化氮的检测

本文介绍用ＮＯ检测试剂盒检测维吾尔族（下称维族）百岁老人唾液中ＮＯ含量。１材料和方法１．１样本采集１．１．１青年组（对照组）：为卫校口腔班学生３０名，维族，年龄１５～１７岁，男１３人，女１７人，身体健康，口腔正常１６人，龋１１人，牙周炎６人。均在１７...     

龋患维吾尔族的百岁老人唾液中的19种微量元素检测探讨

目的：检测患龋维族百岁老人（Ｉ组）唾液中１９例微量元素含量，并与中青年龋病组（Ⅱ组），正常组（Ⅱ组）相比，观察微量元素与龋病关系，以便防治，方法；用等离子光量计分析技术（ＩＣＰ－ＡＥＳ）。结果：发现Ｉ组与Ⅲ组比，Ｍｏ，Ｃａ，Ｐｂ，Ｃｕ，Ｓｒ差别有关显著或高度显著性，Ｃｄ，Ｃｒ，Ｔｉ可能有差异，而Ⅱ组，Ⅲ组相比，Ｍｏ，Ｍｇ差别有显著性，Ｂａ，Ｚｎ，Ｃａ，Ｍｎ近于差异，除Ｍｏ，Ｃａ与两有龋组存在共性，     

唾液中23种微量元素与龋病病因学关系的探讨

本文采用等离子光谱法对20名龋患者和20名正常人口腔唾液中23种微量元素的含量进行定量分析。经统计学处理结果发现龋患者和正常人之间有6种微量元素有高度显著性差异,有3种微量元素有显著性差异。作者认为这9种微量元素的含量变化可能是造成患龋增加的主要原因。     

99例维吾尔族百岁老人裂纹舌的初步观察

９９例维吾尔族百岁老人裂纹舌的初步观察邱洪晟冯咪咪李翠芳白生义贾氢谈延惠裂纹舌是发生在舌背粘膜的病变，临床时有发现，其发生率随年龄增大而上升。我们在１４０名维吾尔族（下简称维族）百岁老人口腔健康调查中，发现裂纹舌患者９９例，现就观察、检测情况报道如下...     

患龋儿童唾液中微量元素的分析研究

唾液中微量元素水平变化对龋病发生发展及预防治疗有重要意义，本研究收集儿童（３￣８）岁１０７人刺激性全唾液８￣１０毫升，分正常组（ＤＭＦＴ＝０）和龋活跃组（ＤＭＦＴ≥８），用离子选择性电板法和电感耦合等离子体发射光谱分析法测定唾液中钾、钙、氟、溴、碘、镧、锶、镉、锌、镁、铜等微量元素，结果表明，患龋儿童唾液中钾、氟含量低于正常、溴、锶、锌则高于正常、钙、碘、镧、镉、铜水平在二组间无显著差异。     

龋患者唾液流率和无机成份测定

本文以３３名１８－３３岁青年人（无龋组，冠龋组）和５２名４７－７４岁中，老年人（无龋组，冠龋组，根龋组）为检测对象，分析无龋者和龋患者（冠龋，根龋）之间口腔卫生唾液流率及无机成分含量的差别，结果表明，无龋者唾液高于龋患者（冠龋，根龋）但无显著性差异；龋患者ＯＨＩｓ高于无龋者，但仅在青年人员有非常显著性差异，中老年人根龋组的唾液钙含量显著高于无龋线，除此之外，龋患者唾液无机成分含量并不低于无龋者，可     

等离子光谱分析法对维,汉二族牙釉质微量元素的测定分析

应用等离子光谱分析法，测定了乌鲁木齐地区维吾尔族和汉族各５０颗正常恒牙牙釉质中２２种微量元素，结果提示：维，汉族间有１４种元素存在着高度显著性差异（Ｐ＜０．０１）；１种元素有显著性差异（Ｐ＜０．０５）。这可能与种族差异、民族习惯和饮食结构不同有关，也可能是维族患龋率显著低于汉族的重要因素之一，作者同时对２２种微量元素的相关关系作了分析探讨。     

Evidence of the validity of a model of determinants of quality of restorative dental care

A model describing the relationship between self-reported quality of restorative dentistry and dentist characteristics for 119 Montana general dentists is presented. The best predictors formed a significant model explaining 22% of the variance of the quality measure. Results are contrasted with a previous estimation of the model for 102 Washington general practitioners. Evidence for the external validity of the model is presented.     

Experimental evidence of formation of imines in the course of reduction of hydrazones

The reduction of hydrazones is generally suggested to proceed through a reductive cleavage of the nitrogen–nitrogen bond followed by a reduction of the carbon–nitrogen bond. This sequence of reduction processes is here supported for fluorenone (V) and benzophenone (VI) hydrazones as well as by a comparison of the reduction of fluorenone and benzophenone hydrazonium ions (I,III) with corresponding imines (II,IV). Another proof of the presence of imines as intermediates is the splitting of four-electron waves of hydrazones V and VI and hydrazonium ions I and VIII into two waves at pH < 2. This has been interpreted as due to differences in slopes dE_1/2/dpH and pK_a-values of protonated hydrazine derivatives on one side and corresponding imines on the other. In this pH-range imines formed in reductions of VI and VIII are reduced in a single two-electron wave, those of I and V in two one-electron steps. Fluorenone imine (II) is sufficiently stable to allow recording of time-independent current–voltage curves between pH 6 and 11. In this pH-range the imine (II) is reduced in two one-electron steps. Benzophenone imine (IV) has been found stable between pH 4.6 and 12. At pH 4.6–8 the reduction of the imine IV takes place in a single two-electron step, at pH 8–12 in two one-electron steps. Final proof of the initial cleavage of the N–N bond is presented by comparison with the reduction of nitrones.     

不同剂型玻璃离子水门汀溶解性比较研究

目的:研究、比较不同剂型玻璃离子水门汀的溶解性和表面微观形态改变,为临床使用提供依据.方法:将3M树脂加强型玻璃离子水门汀(水粉剂型)、GC玻璃离子水门汀(水粉剂型)及GC玻璃离子水门汀(双糊剂型)分别在人工唾液中浸泡30 d,冷热循环15000次,烘干测重,比较前后质量变化,计算溶解率,并用扫描电镜观察表面微观改变.结果:不同剂型的玻璃离子水门汀溶解率由高到低分别为3M树脂加强型玻璃离子水门汀(水粉剂型)、GC玻璃离子水门汀(水粉剂型)、GC玻璃离子水门汀(双糊剂型).3种玻璃离子水门汀经浸泡溶解后,SEM扫描表面微观形态可观察到GE玻璃离子水门汀(双糊剂型)表面形态改变较少,其他2组玻璃离子水门汀表面微观改变较多.结论:双糊剂型玻璃离子水门汀理化性能及溶解率均低于传统水粉剂型,是未来临床修复治疗的的良好选择.     

Evaluation of efficacy of chemiluminescence for diagnosis of leukoplakia

ObjectiveLeukoplakia is the most common potentially malignant disorder preceding oral cancer. Chemiluminescence has been developed as an adjunct to conventional examination for the diagnosis of these potentially malignant disorders. This study was conducted to assess the efficacy of chemiluminescence in the diagnosis of leukoplakia and to compare the results with histopathological examination.Study designA total of 50 patients with leukoplakia were included from the outpatients attending the Department of Oral Medicine and Radiology, Dental Hospital, Bengaluru, Karnataka, India. These patients were subjected to conventional oral examination followed by chemiluminescent examination with Vizilite (Zila, Fort Collins, CO, USA) and biopsy for histopathological confirmation.ResultsThe sensitivity, specificity, positive predictive value, and negative predictive value of chemiluminescence were 93.75%, 55.56%, 78.95%, and 83.3%, respectively. The overall accuracy of chemiluminescence was 80%. A statistically significant association was observed between histopathology results and chemiluminescence results.ConclusionAlthough it is an easy, safe, minimal time consuming, and noninvasive technique, it has only adjunctive utility and it does not replace biopsy for the diagnosis of leukoplakia.     

颌骨动静脉畸形的栓塞治疗

目的：总结直接穿刺结合经血管内介入栓塞治疗颌骨动静脉静脉畸形的经验。方法：收治凳骨动静脉畸形患者6例,均进行了介入栓塞治疗。采用的栓塞材料为附凝血棉纤毛的螺圈,聚乙烯醇泡沫微粒和二氰基丙烯酸对丁酯。数字减影颈动脉造影在PHILIPSV300下完成。结果6例颌骨动静脉畸形患者中4,例急性出血得到了快速、有效控制,1例慢性渗血的右下 骨动静脉畸形患者,介入栓塞治疗,拔除松动的右下凳第一磨牙,有效地控制了出血,另1例伴局部软组织搏动性膨隆的上凳骨动静脉畸形患者,介入治疗后膨隆的搏动性得到明显改善,栓塞治疗后分别随访3－24个月,均未发现有口腔内渗血或出血。随访的X线片上,病灶区可见新骨形成。结论：局部穿刺结合经血管内介入栓塞治疗颌骨动静畸形是一种安全、有效的治疗方法。     

Design of clinical trials of traditional therapies of periodontitis

The present paper on the design of clinical trials of periodontal therapy first addresses the issue of the etiology of periodontal disease. It is suggested that most if not all forms of destructive periodontal disease are caused by microorganisms and that there are different forms of disease with different microbial etiologies. The progressive nature of destructive periodontal disease is subsequently discussed and it is emphasized that, in a given patient, periodontal sites which show signs of inflammation and attachment loss may not over a period of several months and years show further sign of attachment loss. The present methods of assessing periodontal disease do not allow us to discriminate between potentially active and inactive sites in untreated patients. The significance and variability of indicators of periodontal disease such as bleeding on probing, probing pocket depth and probing attachment level measurements are discussed. The errors inherent in the various measurements are analyzed and suggestions are presented describing how alterations in any of the above parameters could be identified and presented in a clinical trial. Of concern for the statistical analysis of clinical data of periodontal disease is the definition of the "experimental unit". For a number of years, the "experimental unit" in periodontal trials was the patient. It is clear, however, that different sites within the same individual show different patterns of disease progression and lesion morphology and often respond differently to periodontal therapy. Statistical analyses must consequently be designed which recognize differences in site-to-site infection and lesion morphology within a common host. Until such analyses are available, the investigator should be wary of pooling data within the same individual, since such pooling may obscure meaningful alternatives which may take place in individual periodontal sites. Some goals of periodontal therapy are subsequently identified. 4 goals are discussed more in detail, namely: to establish conditions which will allow the patient to maintain a dentition without further breakdown of the periodontium; to reduce pocket depth to establish an anatomy in the dentogingival region which with proper maintainance care will prevent the re-establishment of the subgingival infection; to gain attachment as a result of treatment; to assess the effect of a certain chemotherapeutic agent on periodontal disease.     

正畸患者切牙影像失真发生情况分析

目的研究正畸患者曲面体层片上的切牙影像失真发生情况，并分析其原因。 方法从中山大学附属口腔医院放射科影像数据库中选取500例正畸患者的曲面体层片和头影测量侧位片，所有曲面体层片均采用咬合杆投照，分别从切牙牙体影像放大、缩小、牙根变短、根尖模糊等评价指标分析上下颌切牙影像失真的发生情况，在头影测量侧位片上测量中切牙根尖-对颌切牙切缘的距离，探讨切牙影像失真发生的原因。采用SPSS 19.0统计软件对所得数据进行统计学检验。 结果500例患者中，切牙牙体影像正常者共417例，切牙牙体影像失真者共83例，影像失真发生率16.6%，其中切牙牙体影像放大17例、牙体影像缩小0例、牙根变短30例，牙根影像变短伴模糊36例。影像失真患者的根尖-切缘距离大于影像正常的患者，差异有统计学意义（F = 5 187.18，P = 0）；影像失真患者的覆盖值大于影像正常的患者，差异有统计学意义（F>477，P = 0）。 结论严重牙颌面畸形如反 、深覆盖是导致曲面体层片的切牙影像失真的主要原因之一。     

正常青年Monson球面半径的测量研究

目的测量正常青年Monson球面半径。方法选择60名(男30名,女30名)正常青年制取全口印模,应用立体摄影成像的原理与方法对Monson球面半径进行测量和统计学处理。结果Monson球面的半径平均为10.173 cm,大于理论值10.160 cm,差异有显著性(P<0.01);男、女性球面半径差异无显著性。结论本实验所得到的数据可作为全口义齿修复中记录颌位关系的一个参量。     

鼻测量法的进展

唇裂术后继发畸形是指唇裂修复术后,仍遗留或继发于手术操作和生长发育变化而表现出来的一类畸形[1]。包括唇畸形、鼻畸形和颌骨畸形。其修复较原发性唇裂修复更复杂,更灵活多变。而导致其修复复杂性的一个重要原因即是局部组织结构复杂变异和缺乏可靠的三维测量手段[2],鼻畸形     

下颌角骨折治疗后并发症的临床分析

目的研究下颌角骨折治疗后并发症,分析原因并提出预防方法。方法回顾分析我院206例下颌角骨折患者的治疗及并发症情况,分颌间固定组62例,内固定组120例,颅颌绷带组24例。结果治疗后发生的并发症有骨感染4例,医源性损伤2例,牙合干扰3例,错牙合畸形2例,颞下颌关节功能紊乱病2例。结论下颌角骨折的治疗应首选坚强内固定,应选择正确的手术方案,加强术前、术后抗感染治疗及术后肌功能训练,对骨折线上的阻生齿应尽可能保留,以减少并发症。