氢氧化钙碘仿糊剂根管封药的临床观察

目的:比较氢氧化钙碘仿(CHI)糊剂与传统的根管消毒剂甲醛甲酚(FC)、樟脑酚(CP)的临床效果。方法:选择需作根管治疗的患者142例,患牙165颗,随机分为CHI、FC、CP组,常规镍钛根管预备后分别封入上述药物于根管及髓腔中,观察比较根管预备封药后发生根管治疗期间疼痛(EIP)的情况、临床疗效及完成根管治疗的复诊次数。结果:CHI组EIP的发生率最低、临床有效率最高、复诊次数最少,与FC组有显著性差异(P<0.05),但与CP组的差异无显著性(P>0.05)。讨论:与传统的酚类根管消毒药物(FC、CP)相比较,CHI封药不易导致EIP,临床疗效高、疗程短、操作简便、无细胞毒性及抗原性,是一种较理想的根管消毒剂。     

氢氧化钙应用于根管封药的临床研究

目的：观察氢氧化钙甘油糊剂用于根管封药的临床疗效。方法：选择244例慢性根尖周炎病例，随机分观察组（氢氧化钙甘油糊剂组）124例、 对照组（甲醛甲酚组）120例，观察封药一周后的临床疗效和细菌培养结果。结果：两组的临床效果有显著差异（P＜0．01）。Ca(OH2)组67．7％一次封药后即可行根管充填，FC组为40％，Ca(OH2)组治疗期间未产生疼痛，FC组则有8．3％产生疼痛，平均封药次数Ca(OH2)组1．38次，FC组1．76次，细菌培养结果与此呈正相关。结论：氢氧化钙甘油糊剂在杀灭微生物、减少治疗期间疼痛和 减低对根尖周组织和刺激性方面效果优良。     

氢氧化钙甘油糊剂用于儿童乳牙根管封药的疗效观察

笔者用氢氧化钙甘油糊剂作为抗菌剂，用于儿童乳牙慢性根尖周炎根管封药，在根充前处理感染根管，经过临床疗效观察，减少治疗期间疼痛，减低对乳牙根尖周组织的刺激性方面较传统的甲醛甲酚液治疗效果显著。     

氢氧化钙和FC用于根管封药后的临床观察

根管预备术后疼痛是指在根管预备后出现的疼痛和肿胀,发生率为4%～20%[1].其发生与多种因素有关,包括病人的体质,根管解剖、细菌感染程度及创伤等.     

根管封氢氧化钙糊剂的疗效

临床上因儿童前牙外伤冠折、前磨牙畸形中央尖未得到及时治疗,在根尖未形成之前牙髓就已经感染坏死,影响了牙根发育的病例不少见。作者自1991年以来陆续收治了66例患者,72个患牙。1991～1994年采用氧化锌和氢氧化钙糊剂作暂时的根管充填,Ａ组为氧化锌组,Ｂ组为氢氧化钙组,两组各治疗36牙。治疗后半年、1年均复诊的牙每组各28个,还有2牙只在治疗半年后复诊过1次。1　临床资料1.1　一般资料本组患者66例,男37例,女29例,年龄9～25岁。患牙72个。上中切牙39个,侧切牙9个,均为外伤性冠折牙;前磨牙均为畸形中央尖折断后牙髓感染所致,第一前磨牙9个…     

氢氧化钙根管封药172例疗效观察

近年来氢氧化钙作为新的根管消毒药物，其疗效及安全性已越来越受到临床专家的肯定。我们自2000年应用氢氧化钙作为根管封药，并系统观察172例，与传统根管消毒药物甲醛甲酚(FC)相比较，疗效满意，现报道如下。     

地塞米松-氢氧化钙糊剂用于根管封药的临床研究

目的 观察地塞米松-氢氧化钙糊剂应用于根管封药的临床疗效。方法 选择240例根尖周炎病例，随机分观察组(地塞米松-氢氧化钙糊剂组)对照组(甲醛甲酚组)各120例，观察封药一周后的临床疗效。结果 两组效果有显著差异，地塞米松-氢氧化钙糊剂根管封药显效率(90．8％)优于甲醛甲酚根管封药(66．7％)。结论 地塞米松-氢氧化钙糊剂应用于根管封药能有效预防和降低根管治疗期间疼痛和水肿的发生。     

氢氧化钙甘油在根管封药中的应用

根管治疗期间常规采用如樟脑对氯酚、甲醛甲酚等药物,约诊期间经常发生疼痛和肿胀,是治疗难点之一。我们自2002年开始在根管治疗术中采用氢氧化钙甘油糊剂根管内封药,并与传统药物进行对比。报告如下。1材料和方法1.1临床资料慢性根尖周炎120例,120个牙,每位病人仅涉及1个牙,X线检查:根尖周区可见大小不等的稀疏区(0.5~6.5mm)。诊断明确,从未进行根管治疗术,扩根管时根管锉可达根尖部位。1周内未使用抗生素。男68例,女52例,年龄15~60岁,前牙43例,前磨牙62例,磨牙15例。随机分成3组,甲组:氢氧化钙甘油;乙组:樟脑对氯酚;丙组:甲醛甲酚。1.2治…     

氢氧化钙根管内封药预防根管治疗期间的急症

目的：探讨氢氧化钙（calcium hycroxide,CH)根管内封药对根管治疗期间急症（Endodontic interappointment emergencies,IAE)的预防效果。方法：对使用不同药物根管内封药IAE的发生率进行比较。结果：CMCP、PC、IPI、CH组IAE发生率分别是为22．0％、28．0％、26．0％和4．0％，有非常明显的差异，疼痛指数亦以CH组最优。结论：CH根管内封药，对IAE的发生有较好的预防作用。     

氢氧化钙在根管内封药的应用

根管治疗中 ,两次约诊之间采取有效的根管内封药 ,已成为共识。传统的根管内封药物有多种 ,如樟脑对氯酚(ｃａｍｐｈｏｒａｔｅｄｐａｒａｍｏｎｏｃｈｌｏｒｏｐｈｅｎｏｌ,ＣＭＣＰ)、甲醛甲酚 (ｆｏｒｍａｃｒｅｓｏｌ,ＦＣ)、碘 碘化钾溶液 (ｉｏｄｉｎｅ ｐｏｔａｓｓｉｕｍｉｏｄｉｄｅ ,ＩＰＩ)等[1]。近年来氢氧化钙 [Ｃａ(ＯＨ) 2 ]作为一种根管内封药 ,在多种牙髓及根尖周疾病的治疗中得以广泛应用 ,它在杀灭微生物和减轻两次约诊之间的症状以及减低对根尖组织的毒性等方面表现出更为优良的效果[2 6 ]。一、药理作用1 抗菌性 :…     

氢氧化钙在根管消毒中的作用机制

氢氧化钙因其特有的理化特性在临床根管消毒中得到越来越广泛的应用。许多研究表明,氢氧化钙具有良好的扩散性,并可以通过破坏细菌菌体、降解细菌脂多糖等途径发挥消毒作用。本文将对氢氧化钙在根管消毒中的主要作用机制做一综述。     

Quantitative chemical study of root canal preparations with calcium hydroxide

Abstract Chemical tests were carried out in order to determine the rate of carbonatation of different samples of calcium hydroxide used in intracanal therapeutics. The methods were based either on direct measurement of the kinetics of CO₂ fixation by dry powder or on analytical titration of the carbonate content of fresh and aged samples. Dry powder preserved in closed flasks and paste preparations packed in screw syringes were free from carbonate even after several years. When samples were exposed to open air the rate of carbonatation was extremely slow. The carbonate formation in normal clinical conditions of calcium hydroxide utilization seemed not to be responsible for the variability sometimes observed in clinical results.     

Apical leakage following root canal dressing with calcium hydroxide

Abstract The purpose of this study was to analyse the apical leakage in teeth filled by the lateral condensation technique following medication with calcium hydroxide. One hundred and twenty extracted human teeth were biomechanically prepared by using exclusively reaming motion with files up to #40. Half of the teeth received a calcium hydroxide dressing for 3 days. The medication was removed by irrigation and reaming motion with files #40 up to #70. The teeth were divided in 6 experimental groups, according to the dimension of the utilized instrument. The root canals were filled and posteriorly the teeth were placed into a 2% methylene blue dye solution inside a flask, which was attached to a vacuum pump. Leakage was measured linearly, and the results showed significantly (p<0.01) less leakage in the experimental groups that received calcium hydroxide dressings than in the control groups. The results persisted even after the removal of 300 of dentin from the root canal dentinal walls.     

A clinical evaluation of one and two-appointment root canal therapy using calcium hydroxide

A clinical study using vital maxillary central incisors was performed to evaluate the incidence of postoperative pain after root canal treatment in one- or two-appointments using a calcium hydroxide-containing root canal sealer. No differences were observed between the two groups.     

碘仿氢氧化钙糊剂充填感染根管的微漏实验研究

目的：探讨碘仿氢氧化钙（ICH）糊剂充填感染根管后对根尖孔的封闭性能。方法：将49个牙周牙髓联合病变需要拔除的患牙随机分为4组：A组和A1组用ICH糊剂充填根管；B组、B1组用氧化锌丁香油糊剂加牙胶尖充填根管。A组、B组充填后即刻拔牙。A1组、B1组充填后3又拔牙。采用染料渗入法检查根尖孔微漏值，在解剖显微镜下测量染料渗入距离。结果：A组、B组微漏值分别为1．08和1．18mm，对根尖孔的封闭性能二者相比无显著差异（P＞0．05）。A1组微漏值由1．08mm上升为3．05mm。B1组的微漏值为1．58mm，对根尖孔仍有良好的封闭性。A1组较B1组封闭性能差，两者有显著差异。结论：ICH糊剂充填感染根管一段时间后对根尖孔的封闭性能不佳，只能作为暂时根充材料。     

氢氧化钙预防根管治疗术后疼痛的临床观察

目的评价氢氧化钙作为根管内药物预防根管治疗术后疼痛的效果。方法选择90颗牙髓坏死的前磨牙,将其随机分为A、B、C组,每组30颗牙。A组患牙1次完成根管治疗;B组患牙2次完成根管治疗,但约诊期间根管内不封任何药物;C组患牙2次完成根管治疗,但约诊期间根管内封Ca(OH)2糊剂。采用改良10点视觉模拟量表对患者根管治疗后疼痛的严重程度进行评价,比较3组患者根管治疗后的疼痛水平。结果A组与B组、B组与C组患者根管治疗术后疼痛的差异有统计学意义(P<0.05),A组与C组患者根管治疗术后疼痛的差异无统计学意义(P>0.05)。结论氢氧化钙作为根管内封药可有效预防根管充填后疼痛的发生。     

氢氧化钙用于根管消毒作用的临床研究

目的观察氢氧化钙对感染根管的临床疗效和细菌学改变。方法采用随机分组对照实验,以樟脑对氯酚为对照,分别记录两组封药前后的临床和实验室指标,并进行统计学分析。结果氢氧化钙组显效率为83.33%,一次封药即可进行根管充填。樟脑对氯酚组显效率为56.67%,两组差异有统计学意义(P<0.05)。细菌培养结果显示两组在厌氧菌、链球菌和乳杆菌阳性率的差异有统计学意义(P<0.05)。结论氢氧化钙是一种高效、广谱的抗菌药物,能很好地改善临床症状。     

氢氧化钙糊剂清洁根管壁的扫描电镜研究

目的 :观察氢氧化钙糊剂对根管壁的清洁作用。方法 :取离体人牙的根 1/ 3,劈开后分别浸入 5 2 .5g/L次氯酸钠液中 5、15s和氢氧化钙水糊剂中 1、3、7d ,超声清洗后扫描电镜观察。结果 :次氯酸钠 5s和氢氧化钙 1d组牙髓未完全溶解 ,氢氧化钙 3d时尚有少量牙髓组织、前期牙本质未溶解。氢氧化钙 7d和次氯酸钠处理 15s时 ,牙髓彻底溶解 ,根管壁平整 ,牙本质小管口完全暴露。结论 :氢氧化钙具有较好的根管壁清洁作用     

Effect of root canal filling materials containing calcium hydroxide on the alkalinity of root dentin

Abstract The effect of root canal filling pastes containing calcium oxide resp. calcium hydroxide on the alkalinity of extracted human teeth was investigated using a colour indicator (cresol red). An aqueous suspension of calcium hydroxide (Pulpdent), which is normally used for temporary root canal filling, most consistently produced alkalinity. Removal of the smear layer following instrumentation of the root canal led to increased proportion of alkaline-positive spots in dentinal locations distant from the canal. A clearly smaller effect was found with a calcium salicylate cement (Sealapex) and an oil-paste (Gangraena Merz), both of which are available for definite root canal fillings. Following removal of the smear layer, these hard-setting preparations caused moderate alkalinity in dentin adjacent to the canal but no effect was observed in locations more distant from the canal. Neither at locations adjacent to nor distant from the root canal was alkalinity found when another calcium salicylate cement (Apexit) was used. Apparently the release of hydroxyl ions into root dentin from calcium hydroxide containing root canal filling materials is not solely influenced by the absolute amount of calcium hydroxide, but also depends on other ingredients which variably inhibit the release of these ions.     

Clinical and radiographic study of pulpectomy and root canal therapy

abstract — A clinical and radiographic reexamination of 2,459 roots 2–7 years after initial pulpectomy or root canal therapy is presented. The overall success rate, which was 53%, was not affected by the sex or age of the patient, or by the jaw in which the tooth was situated. The tooth group, however, had a significant influence on the success rate, the worst results being obtained for incisors and especially the mandibular central and maxillary lateral incisors. The prognosis was clearly better for the pulpectomies than for the root canal therapy. Mortal pulpectomy was found to succeed more often than vital. The presence of a primary periapical rarefaction worsened the success rate. The success rate was lower for the teeth in which a posttreatment prosthetic crown had been fitted. Fillings which went beyond the apex had a significantly lower success rate than those which nearly or exactly reached the apex.