2489例涎腺上皮性肿瘤临床病理分析

目的:了解涎腺上皮性肿瘤的临床病理特点。方法:对2489例涎腺上皮性肿瘤临床病理资料进行统计分析。结果:涎腺恶性上皮性肿瘤840例,腺样囊性癌、黏液表皮样癌、癌在多形性腺瘤中居其前3位;涎腺良性上皮性肿瘤1649例,多形性腺瘤、Warthin瘤、基底细胞腺瘤居其前3位。涎腺恶性、良性上皮性肿瘤男女之比为1.13∶1和0.99∶1;平均发病年龄47.86岁和44.86岁;腮腺和腭部为好发部位。结论:腺样囊性癌和多形性腺瘤是最常见的涎腺恶性、良性上皮性肿瘤。     

2456例唾液腺肿瘤临床病理分析

目的探讨唾液腺肿瘤的发病、病理类型等临床特点。方法收集中山大学孙逸仙纪念医院口腔颌面外科1973年1月至2018年12月间确诊的唾液腺肿瘤病例2456例患者的相关资料,回顾分析其性别、年龄、病理类型、发病部位、良恶性构成比等特点。结果46年间收治的唾液腺肿瘤患者2456例,女性比例占41.9%,男性占58.1%,40~60岁年龄段为发病高峰,其中良性肿瘤1863例(75.9%),恶性肿瘤593例(24.1%),良恶性之比为3.1∶1。良性肿瘤构成比前2位是多形性腺瘤(58.7%)、Warthin瘤(33.6%),恶性肿瘤构成比前2位是黏液表皮样癌(27.7%)、腺样囊性癌(26.1%)。最常见的良性肿瘤多形性腺瘤的好发部位是腮腺、腭部、颌下腺,而恶性肿瘤中粘液表皮样癌则常见于腮腺和腭部的小唾液腺。本组资料中唾液腺肿瘤发病呈逐年递增的趋势,近10年病例占总病例数的53.3%。结论唾液腺肿瘤病人数量逐年增加;唾液腺肿瘤的总发生率男性高于女性;大唾液腺以良性肿瘤为主,小唾液腺恶性肿瘤多见;多形性腺瘤、Warthin瘤、黏液表皮样癌最常见;40~60岁是唾液腺良、恶性肿瘤高发年龄段。     

615例小涎腺上皮性肿瘤的临床病理分析

目的　探讨小涎腺上皮性肿瘤的临床病理特点。方法　对615例小涎腺上皮性肿瘤的部位分布、发病年龄、性别及组织学类型进行回顾性分析。结果　615例小涎腺上皮性肿瘤中腺瘤265例,癌350例,良恶性肿瘤之比为1∶1·3。良性肿瘤中以多形性腺瘤最为常见(81·1%),其次为肌上皮瘤(14·7%)。恶性肿瘤中以腺样囊性癌最常见(32·9%),其次为粘液表皮样癌(21·4%),腺癌(11·7%)。小涎腺上皮性肿瘤以腭部最为好发,分别占良、恶性肿瘤的77·0%和60.0%。腺瘤中女性患者(51·3%)稍多于男性(48·7%);小涎腺癌患者中男性(56·3%)多于女性 (43·7%)。小涎腺腺瘤患者平均发病年龄40·9岁,小涎腺癌平均发病年龄49·1岁,恶性肿瘤的发病年龄显著高于良性肿瘤(P<0·05)。结论　小涎腺上皮性肿瘤在病理类型构成比、部位、年龄、性别分布上具有其独到的特点。     

磨牙后区粘液表皮样癌

粘液表皮样癌是一较常见的涎腺恶性肿瘤,发生于大涎腺的病变主要位于腮腺,而发生于小涎腺的病变多数位于腭部,仅少数发生于舌、颊、唇等处的小涎腺,现就我们收治的4例磨牙后区粘液表皮样癌报告如下:     

528例老年人涎腺肿瘤的构成比分析

目的 了解目前老年人涎腺肿瘤的构成现状,为早期诊断和治疗提供帮助。方法 对本科90年代老年人涎腺肿瘤住院患者的临床资料进行总结分析。结果 老年人涎腺肿瘤患者总数呈增长趋势,且多发于60－74岁;良恶性之比为1．7：1;良性肿瘤中腺淋巴瘤的构成比接近多形性腺瘤,恶性肿瘤中腺样囊性癌的构成比居首;腮腺区发病最多,其次为腭部;女性患病率有增高趋势。结论 老年人涎腺肿瘤的构成与80年代有所不同,在临床工作中须引起重视。     

涎腺肿瘤中Pax9基因的表达及其意义

目的:检测正常涎腺组织及涎腺肿瘤中转录因子Pax9的表达。方法:采用免疫组化SABC法,研究Pax9在正常涎腺组织、多形性腺瘤、腺淋巴瘤、基底细胞腺瘤、粘液表皮样癌和腺样囊性癌共48例中的表达情况。结果:除1例多形性腺瘤外,其余组织均表达Pax9。正常涎腺的腺泡细胞和导管内衬细胞、多形性腺瘤的上皮细胞、腺淋巴瘤的肿瘤上皮细胞和基底细胞腺瘤中Pax9弱阳性表达,差异没有显著性;而在增殖活跃的细胞如正常涎腺导管的基底细胞和恶性肿瘤细胞(粘液表皮样癌、腺样囊性癌)中表达增强,恶性肿瘤中Pax9的强阳性表达率明显增高,与正常和良性肿瘤相比具有显著差异(P<0.05)。结论:Pax9在涎腺肿瘤尤其是恶性肿瘤的发生过程中发挥重要的作用。     

儿童涎腺上皮性肿瘤的临床研究

目的：探讨儿童涎腺上皮性肿瘤的发病特点及诊疗要点。方法：对４５例经病理证实的１６ 岁以下儿童涎腺上皮性肿瘤患者的临床资料进行统计分析。结果：儿童涎腺上皮性肿瘤,男女之比为１．１４：１;发病平均年龄为１０．３４岁,随着年龄的增大,患病比随之增高,但年龄越小患恶性肿瘤的可能性愈大,且恶性程度愈高;发病部位以腮腺、颌下腺及腭部多见,大小涎腺间良恶性肿瘤患病比无明显差别;良性肿瘤以多形性腺瘤常见,恶性肿瘤以粘液表皮样癌最常见。良性肿瘤术后少有复发,恶性肿瘤复发率约占被随访者的５０％ 。结论：对儿童涎腺上皮性肿瘤,尤其是患儿年龄愈小时,患恶性肿瘤的可能性更大,应引起高度警惕。恶性肿瘤手术应彻底,不可因患儿年龄小过分强调保留面神经而增加复发的机会。     

颊部小涎腺多形性腺瘤1例

多形性腺瘤(Pleomorphic adenoma)也称混合瘤,含有肿瘤性上皮组织与粘液样组织或软骨样组织。临床上以腮腺最多见,其次为颌下腺,小涎腺中以腭部腺瘤较多见,而发生于颊部小涎腺的多形性腺瘤极为罕见。现将我院收治1例发生于右侧颊部小涎腺的多形性腺瘤报告如下:     

小涎腺肿瘤的临床与诊断

作者分析1964～1984年诊治的小涎腺肿瘤224例,占所有涎腺肿瘤的23.3％。良性肿瘤50例(22.3％);多形性腺瘤48例(21.4％),单形性腺瘤2例(0.9％),恶性肿瘤174例(77.7％):腺样囊性癌107例(47.8％),腺癌27例(12％),未分化癌6例(2.6％),恶性混合瘤5例(2.2％),粘液表皮样癌28例(12.5％),腺泡细胞癌1例(0.5％)。肿瘤的组织学结构和定位有一定关系,多形性腺瘤:78％在软腭和口咽侧壁,20％在颊部。腺样囊性癌:78％在上颌牙槽突起和鼻副窦,其次在硬腭和舌根部。腺癌:20％在舌根,18％在颊部和牙槽突起。粘液表皮样癌:28％在舌根。     

涎腺上皮性肿瘤1282例病理组织学分类及临床资料统计

作者对1282例涎腺上皮性肿瘤的病理组织学分类和临床发病情况进行了统计分析。结果表明,涎腺腺瘤723例,占56.4％;涎腺癌559例,占43.6％。多形性腺瘤居涎腺腺瘤首位,粘液表皮样癌为最常见的涎腺癌。除Warthin瘤男性明显多于女性外,涎腺上皮性肿瘤的性别分布无明显差异;涎腺腺瘤的发病年龄较涎腺癌相对年轻,但差异不显著;涎腺腺瘤多发于大涎腺,涎腺癌多发于小涎腺。     

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     

《口腔医学》杂志2007年度有关信息的分析

目的通过对《口腔医学》2007年全年文献的回顾和分析,了解我国口腔临床医学的研究现状。方法阅读2007年《口腔医学》全年的文献,对各种信息进行了分类汇总,根据设计类型对临床一次性文献进行了分类,并对其中的试验性研究文章进行质量分析。结果《口腔医学》2007年全年的一次性文献274篇,基础和临床文献分别为108和166篇,以临床文献为主(60.58%)。在临床研究文献中,属于观察性、分析性和试验性的文献分别为97、9和60篇,观察性文献所占比例为36.14%,高于以往的报道。60篇观察性文献中,全都设有对照;统计方法应用得当者44篇;真正做到随机、盲法的分别只有4和2篇。结论我国口腔临床方面的研究水平近年来提高明显,但设计的科学性方面有待提高。