核桩烤瓷冠在前牙修复中的应用体会

近年来。由于烤瓷修复技术水平的提高,已被广泛应用于临床,尤其是前牙的缺失、残冠、残根及牙科美容等。我们本着保存牙体与美容治疗的原则,从1997年3月至今,对46例前牙残冠、残根患者进行了核桩烤瓷修复。就核桩烤瓷修复中易出现的龈缘密合性问题谈谈笔者的体会:1 一般资料 患者共计46例残根、残冠,其中中切牙36例,侧切牙6例,尖牙4例。患者最大年龄62岁,最小21岁,男性23例,女性23例,患牙经根管治疗后临床检查无松动。X线显示根尖无阴影,牙槽骨无明显吸收。1.1 材料与方法     

自攻型根管钉修复残根残冠的疗效观察

目的:探讨根冠钉修复残根残冠的优缺点.方法:随机选取残根残冠135例共计174颗患牙,且均行完善的根管治疗,2～4周后进行根管钉银汞核或树脂核冠修复.结果:经过1～3年的随访,174颗患牙中,171颗修复后均能行使正常咬合功能,仅有3例出现了侧穿、根裂、核脱落且均为磨牙.结论:根冠钉修复残根残冠操作简单临床效果好.     

后牙残冠的树脂嵌体修复

随着生活水平的提高,人们对牙齿的保存修复提出了更高的要求。一些后牙的残根残冠在经过完善的根管治疗后,采用铸造桩核或根管钉树脂核、银汞核的方法,再经全冠修复后保存了患牙,取得了很好的效果。但也有一些后牙的残冠,由于根短、弯根或根管钙化、髓石、断针等原因,部分根管不能进行完善的根管治疗或使用钉核不能取得足够的固位力,对这类患牙常须拔除。我们在临床实践中发现,采用高强度的树脂(Artglass)嵌体可以修复此类残冠并取得了较好的临床效果。     

Parapost玻璃纤维桩修复残根残冠87例报告

目的：探讨Parapost玻璃纤维桩联合Paracore粘接剂对残根残冠进行桩核全瓷冠修复的临床效果。方法：对87例122颗已行完善根管治疗的前牙残根残冠,利用Parapost玻璃纤维桩联合Paracore粘接剂及树脂核材料形成桩核,再进行全瓷冠修复。治疗完成后第6、12个月复查并观察临床疗效。结果：6个月时复查,86例成功,1例桩冠折断,并立即相同方法再修复;12个月时复查,87例122颗患牙桩核均成功。结论：Parapost玻璃纤维桩联合Paracore粘接剂及树脂核材料形成桩核,操作简便快捷,桩的粘接力强,纤维桩韧性高,不易发生折断及脱落,桩及核无色透明,前牙修复美观,是残根和残冠修复的好方法。     

核桩烤瓷冠在前牙修复中的应用体会

近年来，由于烤瓷修复技术水平的提高，已被广泛应用于临床，尤其是前牙的缺失、残冠、残根及牙科美容等。我们本着保存牙体与美容治疗的原则，从1997年3月至今，对46例前牙残冠、残根患进行了核桩烤瓷修复。就核桩烤瓷修复中易出现的龄缘密合性问题谈谈笔的体会。     

纤维桩修复残根与残冠的临床观察

目的纤维桩在残根与残冠临床修复的可靠性。方法在所选的100颗患牙经过完善的根管治疗后进行纤维桩核修复,在此基础上进行烤瓷冠或全瓷冠的全冠修复。结果经过两年的随访观察,病历无一失败,有效的恢复了患者的美观和咀嚼功能。结论纤维桩在残根残冠的修复的可行并成功的。     

玻璃纤维桩在前牙残冠修复中的应用

目的探讨纤维桩在前牙残冠修复中的临床应用价值。方法将147例病人160颗前牙残冠残根随机分为纤维桩(A组)和金属铸造桩核修复组(B组),每组80颗牙,随访观察2年。结果A组78例桩冠修复体完好,成功率为97.5%,B组72个桩冠修复体良好,成功率为90.0%。两组相比纤维桩修复组较金属铸造桩核组治疗成功率高(P<0.05)。结论 用预成的根管玻璃纤维桩系统进行前牙残冠修复,具有操作简单、方便、减少根折,缩短就诊次数等优点。     

玻璃纤维桩加全瓷冠修复前牙残根残冠的效果

目的观察玻璃纤维桩＋全瓷冠修复前牙残根残冠的效果。方法选择我科进行前牙残根、残冠修复治疗患者76例82颗患牙,采用玻璃纤维桩＋全瓷冠修复,完成后6—12个月对患者进行随访,观察有无冠桩脱落、折断、松动以及牙龈、牙冠的色泽改变情况。结果82颗患牙中,有1颗出现冠脱落,1例出现根尖叩痛。全部82颗患牙均未出现根折、桩核脱落,无继发龋坏,冠及龈边缘无变色,色泽美观。结论玻璃纤维桩＋全瓷冠修复前牙残根残冠临床效果良好。     

钛合金烤瓷全冠修复龈下残根残冠67例

目的探讨因外伤或龋病导致的残根残冠缺损面位于龈下3 mm左右时进行树脂核桩加钛合金烤瓷冠修复问题。方法把握适应证和完善的根管治疗,严格基牙制备要求,树脂核桩加钛合金烤瓷全冠修复。结果钛合金烤瓷冠修复缺损面位于龈下3 mm左右的残根残冠,临床观察1~3年的成功率86.57%,效果满意。结论钛或钛合金具有良好的组织相容性,对牙龈刺激小,可以增加龈下义齿的成功率。     

铸造桩核修复后牙残根残冠32例分析

目的：观察铸造桩核修复后牙残根残冠的临床疗效.方法：选择32例40颗患牙,完善的根管治疗后,根管内植入螺纹桩,用光固化复合树脂做核,再制作铸造冠或烤瓷冠.术后每一年复查一次,观察期为3年.结果：修复患牙40颗,其中成功25例（33颗）占82.5%,X线显示根周无异常影,患者感觉良好,牙龈无萎缩及瘘管.失败5例,失访2例,占17.5%,X线显示根周有阴影,牙槽骨有吸收,患牙有疼痛、松动、牙龈有肿胀.结论：根管螺纹桩、光固化树脂核加全冠修复后牙残根残冠效果良好,临床上需严格掌握适应症,以提高成功率.     

Optimization of the system of medical service of students of Cadet Schools of the Ministry of Defense of the Russian Federation

One of the factors of the successful military career guidance Cadet schools students is preserving and promoting their health. Medical support of children and adolescents aged 10-17 years should include the full range of medical and preventive measures defined for this group. The state of providing outpatient care for pupils at the Cadet School in St. Petersburg was studied. These results show that full medical care in accordance with the standards can be based only on children's health clinics. It is important that the organization of medical support pupils cadet schools should be cooperate with civilian health care.     

带状疱疹83例误诊原因分析

带状疱疹是由水痘—带状疱疾病毒引起的皮肤科常见疾病。其主要的病理损害,一是受累神经的严重炎症性浸润,继而导致受侵犯神经节内神经细胞变性、坏死;二是皮肤的水泡。迅速抑制神经节和相应的感觉神经纤维的充血、水肿和坏死,防止粘连形成,达到迅速镇痛、改善皮损,缩短病程及防止后遗症的发生是治疗的关键。因而,尽早明确诊断,     

Estimation of accumulated dose of radiation by method of ESR-spectrometry of dental enamel of mammals

ESR-spectrometry was used to investigate radiation-induced paramagnetic centers in enamel of mammals: carnivores (polar bear and fox), ungulates (reindeer, European bison, moose), and man. Values at half the microwave power saturation of the radiation signal, P_1/2, evaluated at room temperature, was found to range from 16 to 26 mW for animals and man. A new approach to discrimination of the radiation induced signal from the total ESR spectrum of reindeer enamel is proposed. ‘Dose-response’ dependencies of enamel of different species mammals were measured within the dose range from 0.48 up to 10.08 Gy. Estimations of ‘radiosensitivity’ enamel of carnivores and ungulates showed good agreement with radiosensitivity enamel of man by ESR method.     

Analysis of the results of the international comparison of activity measurements of a solution of Fe

The results of an international comparison of activity measurements of a solution of ⁵⁵Fe organized by the BIPM in 2005 are reported and analysed. This exercise, which follows the procedures of the CIPM mutual recognition arrangement to update older comparisons, is a renewal of the comparison organized by the BIPM that took place in 1978. A EUROMET comparison was organized in 1996 specifically to compare activity measurements of a ⁵⁵Fe solution by means of liquid-scintillation techniques. Results of these three comparisons are presented and discussed in this paper.

The radionuclide solution was provided by the NPL, which also distributed the samples to the participants. The activity of the ampoules was measured by 16 laboratories using 12 methods producing 25 results. Some general considerations on uncertainty assessments pertaining to the different techniques used are drawn. The outcome of four different estimators is compared from which the presence of at least one outlier can be confirmed. Further measurements should be made to try to reduce the discrepancy between the results. To date the outcome of the present comparison does not show an improvement to that of the 1996 comparison.     

Evaluation of the results of various technics of non-surgical therapy of varicocele

A new method of non-surgical treatment of varicocele syndrome is described: it consists in sclerotherapy of spermatic vein by trans-femoral percutaneous catheterization with balloon-catheters. In 8 cases venous thrombosis has been induced by direct electric clotting. The techniques and a 6 months follow-up are discussed. It is pointed out that this procedure should be considered as the method of choice for tubular lesions and sub-fertility prophylaxis in young people and in childhood.     

延迟性脾破裂误漏诊原因分析

目的探讨延迟性脾破裂误漏诊原因和预防措施.方法回顾性分析总结12例延迟性脾破裂中的诊断和误漏诊的经验与教训.结果本组延迟性脾破裂的误漏诊5例(41.66%).对多发伤与脾破裂并存可能认识不足,外伤史轻微或伤员隐瞒外伤史,缺乏腹痛-缓解-突然再腹痛的典型病史,缺乏“对冲性脾破裂”力学分析和整体化诊断思路等为其误漏诊的主要原因.结论详细的外伤史和全面系统检查,重视腹以外多发伤掩盖腹内脏器伤及延迟性脾破裂可能.确立外伤-腹内脏器伤-脾破裂整体化诊断思路.不间断地辅以B超检查脾形态学变化和腹内有无积液,腹腔穿刺确定有无血腹、X线胸腹部检查观察左侧胸肋角和膈肌运动情况、必要时CT检查以尽早发现脾包膜下血肿,降低延迟性脾破裂误漏诊率.