全口义齿

基台的不同穿龈高度对国人种植磁性覆盖总义齿性能的影响;翻蜡法精确复制全口义齿;球帽附着体种植覆盖全口义齿在下颌无牙颌的应用;两种剂型义齿粘附剂对全口义齿咀嚼功能影响的初步研究;用于全口义齿的人工牙三维坐标系的建立     

4种不同穿龈高度的修复基台对边缘骨吸收影响的5年临床观察

目的 评价不同穿龈高度的修复基台在种植修复5年后的长期临床疗效。方法 选取2015年1月至2015年9月于南昌大学第四附属医院口腔科就诊的牙列缺损行种植修复的患者,根据完成最终修复时选用修复基台的不同穿龈高度将其分为4组：A组（≤1 mm）、B组（2 mm）、C组（3 mm）、D组（4 mm）,根据分组情况分别测量每颗种植体在种植即刻、完成最终修复时以及修复负荷至少5年之后的曲面体层放射线片,分析种植体颈部的骨组织变化情况。结果 在观察期内,经过至少5年的功能性负荷,63颗种植体的留存率为96.83%;4组种植体的周围骨组织吸收量中A组[T2-T1:(-0.627±1.030) mm]与B组[T2-T1:(-0.017±0.424)mm]的差异具有统计学意义（P<0.05）;不同穿龈高度的修复基台与种植体颈部平台暴露关系差异具有统计学意义（P<0.05）。结论 自锁锥度固位种植体在完成最终修复时选用不同的穿龈高度的修复基台对种植体周围骨组织的吸收量有一定的影响,在植入深度相同的情况下用长穿龈修复基台可以减少在功能负荷后种植体颈部平台的暴露,从而降低种植体受周围环境感染的风险...     

种植体磁性固位下颌覆盖总义齿不同类型基托的应用比较

目的:探讨预防种植体磁性固位下颌覆盖总义齿基托断裂的临床方法。方法:按基托的不同类型把种植体磁性固位下颌覆盖总义齿患者分为三组,第一组为纯塑料基托,第二组为铸造金属塑料联合基托,第三组为成品的不锈钢丝网与塑料联合基托;分别观察义齿功能后断裂情况、患者的满意度、固位力的变化、义齿性口炎的发生率。结果:铸造金属基托的种植体磁性固位下颌覆盖总义齿没有发生断裂现象,患者的满意度高,义齿性口炎发生率明显低(P<0.05),二年内三组义齿的固位力无显著性变化(P>0.05)。结论:提示种植体磁性固位下颌覆盖总义齿利用铸造金属基托可以达到较好的临床效果。     

全口义齿

20052045 两种不同材料总义齿基托菌斑与义齿性口炎的临床分析；20052046 两种磁性附着体固位的种植全口覆盖义齿光弹应力分析；20052047 少汗型外胚叶发育不良（HED）儿童的全口义齿修复；20052048 全口义齿患者的咀嚼力测试研究；20052049 老年人覆盖全口义齿修复体会；20052050 老年人重度反殆上颌总义齿修复1例……     

过短种植单冠的临床修复

目的探讨验龈距离过低时,增强种植单冠固位力的方法。方法收集因种植单冠[牙合]龈高度过短致冠松动脱落的患者20例,BLB系统2例,XIVE系统18例,采用增加基台[牙合]面固位沟、利用基台内空腔固位、重新选择或调磨基台使肩台位于龈下和改用水平螺丝固位修复体等措施重新制作种植单冠。1年后评价修复效果。结果重新制作的20例种植单冠均获得良好固位,元松动脱落。结论增加基台[牙合]面固位沟、利用基台内空腔固位、重新选择或调磨基台使肩台位于龈下和改用水平螺丝固位的改良措施能够增强过短种植单冠的固位力。     

上颌总义齿修复的临床体会

在口腔修复门诊中,上颌总义齿修复的患者很多,而且其修复制作和修改难度较大,临床出现问题和复诊次数也较多,复诊常见的问题有义齿固位差、组织压痛、上颌义齿基托折断等。 本人于１９９６年至１９９９年对１８例患者进行上颌总义齿修复,其中男１２例,女６例,年龄５３～７２岁;就诊情况：初次修复者１４例,修复失败再次就诊者４例（失败原因均为上颌总义齿基托折裂）;随诊年限：观察１年以下者６例,１－４年者１２例。 义齿固位差及基托折断的原因主要是■运障碍及取模排牙等未按常规操作,天然牙列的■曲线很少符台全口义齿平衡…     

悬锁式唇侧基托下颔总义齿

对５例唇侧牙槽嵴倒凹３—４ｍｍ患者设计了一种新式的下颌总义齿（覆盖总义齿）──悬锁式唇侧基托下颌总义齿（覆盖总义齿）．从而解决了常规总义齿（覆盖总义齿）的就位困难及基托密合问题．文章详细叙述了制作方法．该义齿具有患者修复前不需外科手术、取材容易、制作简便、易于掌握、就位及取戴方便、基托密合、固位好、义齿完整美观等优点．５例患者经１年半使用效果良好．     

58副磁性附着体义齿常见问题的临床研究

目的：观察磁性附着体在口腔义齿修复中出现的并发症,探讨相应的处理方法。方法：对53例患者,58副义齿,123个磁性附着体随访2-6年,平均3年。结果：基托折断8件,衔铁松脱6个,衔铁磨损4个,磁铁松脱5个,基牙龈炎24个,基牙松动拔除7个,牙根折裂1个。结论：磁性附着体能提高可摘义齿的固位力,出现的问题都可以通过选择合适的适应证、正确的操作、修复后定期随访进行预防和处理。     

用双套冠或磁性附着体固位的覆盖义齿制作体会

覆盖义齿是指义齿基托覆盖并支持在健康的或已做过治疗的牙根或牙冠上的一种全口义齿或可摘局部义齿。它与常规义齿的根本区别在于覆盖义齿基托下方除覆盖有粘膜外 ,还覆盖有天然牙或经过治疗的牙根。在它们上面安放附着体 ,可增加覆盖义齿的固位力 ,本文介绍了双套冠和磁性附着体的覆盖义齿制作体会。一、双套冠式附着体双套冠式附着体是借助内冠与外冠之间高度密合产生磨擦力固位的一种修复方式。内冠粘于患者口内基牙上 ,外冠通过连接体埋于义齿基托内部。1.临床要求 :完善的根管和牙周治疗后的牙齿做为双套冠式附着体的基牙。要求基牙磨…     

总义齿的制作与临床固位的关系

本文着重讨论总义齿在制作中,合理地排牙,形成上下颌良好的咬合关系,基托伸展范围的选择,以及基托磨光面的处理等工序的制作规范。以往总义齿强调排在牙槽嵴顶,主要考虑机械力学和杠杆作用,近年来认为托牙外形应符合肌肉功能,按自然牙列的位置排牙,即义齿中立区的观察是符合口腔卫生环境的,过去强调口腔组织适应义齿,现在强调义齿应符合口腔组织,不需组织适应义齿。本文对11名无牙颌患者进行了全口义齿修复,按上述原则制作,临床固位效果好,除1例因牙槽嵴极度吸收,固位欠佳外,余均取得良好固位。     

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。     

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。     

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     

口底癌34例临床分析

目的探讨口底癌的临床特性、治疗方法及预后。方法对我院自1992—2002年住院治疗的34例口底癌患者进行回顾性分析。结果34例口底癌患者中,男28例(82.4%),女6例(17.6%),男女比为4.7∶1,平均发病年龄58岁。发病部位:前口底22例(64.7%),后口底12例(35.3%)。淋巴结转移率41.2%。单纯手术组、化疗加手术组、放疗加手术组、化疗加手术加放疗组的5年生存率分别为45.5%、60.0%、50.0%、62.5%。结论口底癌以中老年患者好发,男性居多。易发生淋巴结转移,综合疗法疗效较好。