聚碳酸脂冠在前牙美容修复的应用

聚碳酸脂冠在前牙美容修复的应用福建省龙岩地区第一医院口腔科（３６４０００）陈金河我科从１９９３年２月起，对前牙残根残冠，畸形过小牙５０例７０个牙采用３Ｍ脂冠进行修复治疗，取得满意效果，现报告如下。１．临床资料：本组病例均选择门诊的前牙残根残冠，畸形过...     

137颗残根残冠治疗与修复的临床效果分析

目的 探讨残根残冠经根管治疗与冠修复后的临床治疗效果.方法 选择2001～2005年在门诊收治的137颗残根残冠为研究对象,经根管治疗后行桩核冠修复,随访观察6个月～4年,分析其临床疗效.结果 经6个月～4年随访,137颗患牙中122颗修复成功,8颗牙根出现不同程度的松动,4颗出现龈瘘,1例核桩因继发龋脱落;2例因牙周炎拔牙.结论 在严格选择适应证的前提下,残根残冠经完善根管治疗与冠修复后可达到满意的临床治疗效果.     

根管螺纹钉加复合树脂修复残冠残根95例报告

目的 总结前磨牙、磨牙残冠残根的牙体修复方法。方法 对95例前磨牙及磨牙残冠残根在根管治疗的基础上行根管内桩钉，光固化复合树脂修复，然后再行金属铸造全冠或烤瓷全冠保护。结果 优73例，良17例，成功率为94．75。失败5例，占5．3％。结论 在完善的根管治疗基础上，对残冠残根应用根管螺纹钉加光固化复合树脂制作桩核进行修复是保留患牙的好方法。     

穿髓底的后牙残冠残根修复的临床观察

目的：探讨穿髓底的后牙经牙体牙髓治疗后的修复方法及保存时间。方法：随机选择临床建议拔除的穿髓底的后牙残根残冠病例,经完善的根管及髓底修补术后１／２～１月无症状者,进行全冠或桩核冠修复。结果：经修复后三年复查,有效率占９２％;无效率占８％。结论：穿髓底的后牙残冠残根经完善的牙髓及要管治疗后,冠修复可以保存较长时间,此方法值得推广。     

前磨牙残冠残根的简单桩冠修复

本文收集前磨牙残冠、残根的２５例患者,共３３个患牙,利用成品螺纹固位钉和成品树脂前磨牙进行桩冠修复,并随访２年以上,收到良好效果。现报告如下：１　临床资料１．１　病例选择临床上无法充填修复的上、下颌第一、第二前磨牙残冠或残根;髓室底完整;残冠的龈壁、残根的根面高于龈上２ｍｍ;牙无松动;Ｘ线片示：牙周、尖周无异常。１．２　一般资料共２５例,男１１例,女１４例。年龄２０～４９岁。患牙共３３个,上颌前磨牙１４个,下颌前磨牙１９个,其中上颌前磨牙残根４个,下颌前磨牙残根６个;３３个患牙中外伤性牙折５个;…     

后牙残根残冠保留修复临床远期疗效浅析

随着根管治疗技术和固定修复技术日臻完善,临床上多数残根、残冠得到保留,并加以修复,达到恢复牙体外形和功能的目的。我们观察１４０例后牙残根、残冠保留修复治疗３年以上病例,分析影响后牙残根、残冠保留疗效的因素,指导临床实际操作。材料与方法１ 临床病例 修复科１９９２～１９９５年后牙残根、残冠保留修复治疗１４０例,修复年限最少为３年,最长７年。其中双尖牙６２例,磨牙７８例。２ 治疗方法 所有保留的残根、残冠经过完善根管治疗（１２７例）或塑化治疗（１３例）。固位桩采用成品桩（３８例）、铸造桩（１０２例）两种…     

玻璃纤维桩在老年人残根残冠修复治疗中的临床研究

目的：探讨玻璃纤维桩在老年人残根、残冠修复治疗中的临床效果。方法：临床选择53例残根残冠的老年患者，68颗患牙。经完善的根管治疗后，采用玻璃纤维制作复合树脂桩核，再以烤瓷冠修复，并经过0．5—2．0年临床疗效的追踪观察。结果：68颗患牙66颗无异常，1颗基牙牙龈炎，1颗纤维桩脱落，修复成功率为97．06％，修复效果满意。结论：玻璃纤维桩在老年患者残根残冠的修复治疗中，能达到良好的修复效果。     

应用螺纹钉与金属冠一次修复磨牙残冠残根

后磨牙残冠残根对咀嚼功能的影响很大.以往多采用拔除残冠残根进行义齿修复.近年来,应用根管桩与光固化树脂修复;多桩桩冠修复等,挽救了大量的患牙,也改变了过去残冠残根需要拔除的观点.我科自1992年以来,采用螺纹根管钉与预成金属冠一次修复磨牙残冠残根共计143个牙,经临床观察,效果满意.现报告如下:材料与方法一、临床资料(一)一般资料 本组共128例,143个牙,其中男性86例,95个牙;女性42例,48个牙;年龄最大为68岁,最小为19岁.残冠     

残根残冠的桩核冠修复

近年来我们采用在已经过完善根管治疗的残根残冠牙上,先完成桩核部分,再于核上制作全冠,共修复了137颗患牙,效果满意,现报道如下。　　作者单位:210014南京市中西医结合医院(金和);南京大学附属口腔医院(王羽)　　一、材料和方法我科1996年6月～1999年6月修复的137颗经过完善根管治疗、牙周组织健康、牙根形态正常的残冠、残根牙。104例患者,男性58例,女性46例;年龄16岁～58岁。残冠:牙冠缺损达1/2～3/4,共76颗;残根共61颗,其中龈上残根42颗,龈下≤3ｍｍ～4ｍｍ19颗。二、修复方法1.牙体预备:去除薄弱牙尖、无基釉及倒凹,对于位于龈下的残根…     

保留前牙残冠、残根的修复

保留前牙残冠、残根的修复赵淑兰北京中国中医研究院广安门医院（１０００５３）作者从１９８８～１９９１年，１９９３～１９９４年间，采用自制不锈钢丝冠桩加光固化复合树脂充填的方法修复前牙残根、残冠２８例，共４１个牙，其中外伤５例呈残根状的１１个牙；深龋残冠...     

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.     

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.     

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.