前牙缺失无卡环可摘局部义齿修复临床体会

<正> 个别前牙缺失多采用可摘局部义齿、固定义齿及烤瓷桥修复,但有患者从美观及经济考虑,要求无卡环可摘局部义齿修复。我科自1998年以来,选择性采用无卡环可摘局部义齿修复个别前牙缺失286例,效果较好,现报告如下。     

金属烤瓷桥体在可摘局部义齿上的应用

引言:一种按传统工艺制作的金属烤瓷牙用于可摘局部义齿上,可获得最佳的配色效果。并用熟悉的工艺上釉,将这种牙体装在可摘局部义齿上,修复上颌缺失的个别前牙,可获得良好的美观效果。 以可摘局部义齿修复缺失前牙时,比色常成问题。由于人工牙制造厂家所能提供的牙齿色调十分有限,因此接近的配色仍不尽人意。在固定修复时,常常在金属烤瓷牙体上通过外源性的着色的方法,以获得理想的配色效果。由于成品瓷牙的上釉温度远远超过     

弹性树脂与铸造支架在义齿修复中的应用(附28例报告)

目的设计一种联合义齿以解决传统可摘局部义齿易显露金属卡环影响美观的问题.方法用弹性树脂制作可摘局部义齿的基托及唇侧固位体,结合铸造支架,制作联合可摘局部义齿,修复28例因多数后牙缺失或前后牙均有缺失须在前牙区设计固位体的病例,行联合义齿修复.结果联合可摘局部义齿具有良好的美观效果及咀嚼功能.结论联合可摘局部义齿兼有弹性树脂和铸造支架的优点,可作为临床上选用的一种修复体.     

个别前牙缺失改良可摘义齿修复

常规的可摘局部义齿修复，有时因个别前牙缺失，也要戴一块大基托在舌(腭)侧，这样就造成了患者异物感很强，部分患者甚至难以适应。近6年来，笔者采用改良可摘义齿修复个别前牙缺失，收到了良好的效果。     

前牙舌面翼板无卡环式可摘局部义齿

为了观察一种新的前牙缺失修复体的修复效果，作者设计一种舌面金属翼板无卡环式局部可摘义齿，人造牙材料可以是树脂或烤瓷临床应用１２例患者，结果表明该修复体美观，舒适，卫生，固位力强，牙体磨除少，有时还可同时修复缺失的后牙舌尖及防止食物嵌塞。作者认为该法可作为一种前牙缺失的美容设计，但必须掌握适应证。     

我国复杂可摘局部义齿修复的发展现状与问题

可摘局部义齿修复是口腔修复学的重要组成部分 ,是适用范围非常广泛的修复设计。近年来 ,随着固定义齿与种植义齿修复技术的发展 ,可摘局部义齿修复在口腔修复中所占比重有所下降。另一方面 ,可摘局部义齿修复的水平也有了较大提高 ,功能与美观恢复更加完善 ,舒适度更加理想。尽管如此 ,在可摘局部义齿 ,尤其是复杂的可摘局部义齿修复过程中 ,仍存在着一些问题。为此 ,中华口腔医学会口腔修复学科专业委员会 1 999年秋在成都主办了全国复杂可摘局部义齿修复专题研讨会 ,与会专家就复杂可摘局部义齿修复的现状与发展等问题进行了深入的讨论。…     

预成可摘局部义齿的制作体会

在临床上我们常遇到牙齿拔除的患者,希望能够在拔牙后即刻戴上一副美观的义齿.因此,采用预成可摘局部义齿修复者逐渐增多.由于其操作不同于常规义齿修复.对临床医生和技工提出了更高的要求.本文对23例采用预成可摘局部义齿修复患者的咀嚼效率.讲行了初步研究.     

前牙舌面翼板无卡环式可摘局部义齿

为了观察一种新的前牙缺失修复体的修复效果，作者设计一种舌面金属翼板无卡环式局部可摘义齿，人造牙材料可以是树脂或烤瓷。临床应用于12例患者，结果表明该修复体美观、舒适、卫生、固位力强、牙体磨除少，有时还可同时修复缺失的后牙舌（胯）尖及防止食物嵌塞。作者认为该法可作为一种前牙缺失的美容设计，但必须掌握适应证。     

烤塑可摘局部义齿修复上前牙缺失（附73例报告）

烤塑可摘局部义齿修复上前牙缺失（附７３例报告）安徽省合肥市第一人民医院（２３００６１）季从容河南省南阳市口腔医院吴纪山上前牙缺失用传统可摘局部义齿修复具有切割牙体组织少，适应症广等优点，被广泛运用于临床。但它也有明显的缺点：假牙不耐磨，基托不够坚固，...     

可摘局部义齿修复1126例临床分析

目的：对1126例可摘局部义齿进行分析，为临床关于可摘局部义齿修复牙列缺损积累经验。方法：随机选取1126件义齿修复病例，分析牙齿缺损位置、数量与性别和年龄的关系及修复体的类型，并对采用新技术进行的特殊设计进行分析。结果：上颌牙缺失多于下颌，不同年龄组缺牙好发部位不同，青年组以前牙缺失为多，其他年龄组以后牙缺失为多。男女两组中平均失牙数随年龄增加而增加，但与性别无关，在各类可摘局部义齿设计中，第5类最多。结论：可摘局部义齿制作简便，适应症广，目前仍然在修复治疗中发挥着重要的作用。     

Variation in periodontal referral in 2 regions in theUK

This study investigated the periodontal referral patterns of general dental practitioners (GDPs) in Northern Ireland (NI) and North West England (NWE). A questionnaire dealing with periodontal referral was sent to all 520 GDPs registered in NI and to 274 GDPs in NWE. A usable return was made by 355 (68%) in NI and 189 (70%) in NWE. The NI dentists made significantly more periodontal referrals (median 5, range 0-80) in the year preceding the survey than those in NWE (median 2, range 0-50), p<0.001. Distance was the only factor significantly related to the referral rate in both regions with those who practised more than 25 miles from a specialist referring significantly fewer patients in both regions. In NI, there was a trend towards increased periodontal referral by GDPs who had attended more postgraduate courses; however, in NWE, this was not the case. The GDPs in NWE were significantly less likely than those in NI to refer patients with medical conditions. It is concluded that there is considerable variation in periodontal referral both within and between the 2 regions studied. It is further concluded that in many cases, non-disease factors, such as the accessibility of the specialist service, have powerful effects on the decisions made by dentists and patients in these regions (NI and NWE) in relation to periodontal referral. Much of the variance in referral in North West England, as in Northern Ireland, remains unexplained.     

云南省五岁儿童乳牙龋病调查分析

目的：了解云南省５岁儿童乳牙龋齿患病情况。方法：随机抽取云南省三个城市三个农村的２１３２名５岁常住儿童,采用第二次全国口腔健康流行病学调查标准调查龋齿患病情况。结果：云南省５岁儿童乳牙患龋率为７５．７５％,龋均为４．４４,充填率仅为６．５７％,仅占构成比的４．３９％。结论：云南省５岁儿童乳牙龋齿患病率高,充填率低。儿童龋病防治应注重两个方面：１．加强对家长和教师的幼儿口腔卫生保健知识及方法的宣传。     

Changes in cyclooxygenase metabolities in experimental periodontitis in Macaca mulatta

The four principal metabolites of cyclooxygenase (CO) were examined during the progression of experimental periodontitis in the rhesus monkey Macaca mulatta. Thirty-two monkeys were divided in four disease-matched groups. Three groups were treated with flurbiprofen, a potent CO inhibitor, at either 0.027, 0.27 or 7.1 mg/kg/day delivered systemically by a subcutaneously-implanted osmotic mini-pump. We have previously described the findings indicating that flurbiprofen treatment significantly retarded clinical attachment loss (ALOSS), redness and radiographic bone loss (BLOSS). This investigation focuses on the changes in CO metabolites which occur during disease progression of ligature-induced periodontitis and on the dose-response relationship of flurbiprofen, as it relates to disease inhibition and the suppression of ARA metabolites within the crevicular fluid (CF). In untreated animals there was a statistically significant 3-fold increase in CF levels of prostaglandin E2 (PGE2) and thromboxane B2 (TxB2) at 3 months, as compared to baseline, which positively correlated with increases in redness, bleeding, ALOSS and BLOSS. CF-PGE2 and TxB2 levels reached a 6-fold peak at 6 months and returned to baseline by 12 months. Flurbiprofen (Fb) prevented the 3-month rise in TxB2, but did not affect the increase in PGE2. At 6 months, Fb administration caused a dose-dependent inhibition of both PGE2 and TxB2. Probit analysis of the dose-response data revealed that the concentration of Fb which caused a 50% inhibition of CF-TxB2 level (the IC50 value for TxB2 synthesis) was approximately two logs lower than the IC50 value for PGE2 synthesis, i.e. TxA2-IC50 = 0.013 vs. PGE2-IC50 = 1.35 mg flurbiprofen/kg/d. The slopes of the PGE2 and TxB2 inhibition curves were identical, consistent with a similar mechanism or singular enzyme for the site of action of Fb inhibition of CO activity. However, the kinetics and sensitivity of Fb inhibition were significantly different for the CO activity responsible for TxB2 and PGE2 synthesis, perhaps due to different compartmentalization of CO within different cell types.     

Mast cells in masseter muscle in experimental bruxism in man

Three human subjects performed tooth grinding for 25 min, and after 20 h biopsies of the right and left masseter muscles were examined for their contents of mast cells. In comparison with specimens from a control group of three subjects, there was an increase of degranulating mast cells in muscles that had performed bruxism.     

Experience in using moradol in osteoplastic operations in oral surgery

Osteoplastic operations on the jaws were carried out in 19 patients aged 14-64 under moradol anesthesia. The mean length of the operation was 3 hours. The authors come to a conclusion that moradol in a dose of 0.3 mg/kg b. w. ensures adequate anesthesia, with a high level of analgesia persisting in the immediate postoperative period.