颌下腺鳞癌在多形性腺瘤中1例报告

癌在多形性腺瘤中又称恶性混合瘤，其发病部位以腮腺最常见，癌变组织类型以腺癌、未分化癌，粘液表皮样癌多见，癌变成分为鳞癌较少见，我科收治一例颌下腺鳞癌在多形性腺瘤中病人，报告如下：     

颏下部软组织混合瘤1例报告

混合瘤又称多形性腺瘤,是唾液腺常见的良性肿瘤。常好发于腮腺,其次为颌下腺,小涎腺以腭部多见。在颌面部,发生于除涎腺以外的软组织较少见。现将颏下部软组织混合瘤1例报告如下。     

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。     

150例涎腺癌的临床分析

分析150例涎腺癌,发生在腮腺61例,颌下腺14例,舌下腺5例,和小唾腺70例。病理分型:癌在多形性腺瘤中49例,腺癌25例,腺样囊性癌24例,粘液表皮样癌22例,腺泡细胞癌22例,鳞状细胞癌5例,乳头样囊腺癌2例,未分化癌1例。150例涎腺癌3、5、10年生存率为80.7％、69.4％、52.1％。腺泡细胞癌和粘液表皮样癌预后较鳞状细胞癌、腺癌和未分化癌好。生存率根据部位,小唾液腺和腮腺肿瘤最高,舌下腺和颌下腺最低。术后放疗和化疗,对涎腺癌,生存率是重要的,涎腺癌复发率为27.6％,颈淋巴结转移率为9.2％。     

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:     

涎腺恶性多形性腺瘤的病理类型

本文报告73例涎腺恶性多形性腺瘤,根据光镜形态分为9个亚型,即腺癌型、鳞癌型、肌上皮癌、低分化癌、癌肉瘤、腺样囊性癌、粘液表皮样癌、多形性腺癌、转移性多形性腺瘤各型。对不同组织类型和多项恶性指标及随访预后的关系进行对比和讨论。     

涎腺肿瘤3461例临床病例分析

目的 :了解涎腺肿瘤发病情况、构成特点及发展趋势。方法 :对四川大学华西口腔医院 195 5～ 2 0 0 2年间收治的 3 461例涎腺肿瘤临床资料进行回顾性分析。结果 :良恶性的平均发病年龄分别是 41.3 8岁和 45 .2 0岁 ,良恶性的男女之比分别是 0 .99∶1和 1.3 4∶1。腮腺、腭部的小涎腺和颌下腺分别列为涎腺肿瘤原发部位前3位 ;多形性腺瘤、腺淋巴瘤、基底细胞腺瘤与粘液表皮样癌、腺样囊性癌、腺癌分别列为良、恶性肿瘤前三位。结论 :涎腺肿瘤发病有增加的趋势 ;男性患者的构成比恶性肿瘤高于良性 ;女性患者构成比有增加趋势 ;腮腺和腭部分别是大、小涎腺肿瘤的高发部位 ;多形性腺瘤和粘液表皮样癌是最常见的涎腺良、恶性肿瘤。     

Warthin瘤粘液表皮样癌癌变1例

Warthin瘤为一种由腺上皮构成的肿瘤，在涎腺良性肿瘤中发生率仅次于多形性腺瘤，Warthin瘤占涎腺上皮性肿瘤的5％～10％。绝大多数发生于腮腺和腮腺的淋巴结，偶见于下颌下腺及小涎腺.Warthin瘤癌变是极为罕见的，近年偶见Warthin瘤有癌变的报道。现将我科1例Warthin瘤恶变，报告如下：     

上唇多形性腺瘤1例

多形性腺瘤（pleomorphic adenoma）又名涎腺混合瘤（mixed tumor）,是涎腺肿瘤中最常见者。临床上约80%发生于腮腺,其次为下颌下腺,舌下腺,小涎腺以腭部多见,而发生于上唇皮下者则较为罕见。现将我科诊治的1例上唇多形性腺瘤病例,报道如下：     

唾液腺上皮性肿瘤1209例临床分析

目的：了解1990-2005年间唾液腺上皮性肿瘤的临床流行病学特点。方法：对南京大学医学院附属口腔医院1990年2月至2005年2月15年间收治的1209例唾液腺上皮性肿瘤患者进行回顾研究，对其病理类型、好发部位、年龄和性别等进行统汁分析。结果：1209例患者中，良性肿瘤与恶性肿瘤之比为1．96：1，男女之比为1：1。良性肿瘤以多形性腺瘤最多见（76．75％）．其次为Warthin瘤（14．75％）；恶性肿瘤以黏液表皮样癌最常见（34．2％），其次为腺样囊性癌（26．2％）。良性肿瘤和恶性肿瘤的好发部位相同，均以腮腺最多，腭部小唾液腺和下颌下腺分列第2位和第3位；发病年龄主要集中于20-70岁之间．结论：唾液腺上皮性肿瘤可发生于任何年龄，良性多于恶性，多形性腺瘤是其最常见的病理类型．     

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.     

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.     

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。     

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