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根管治疗术是治疗牙髓病及根尖周病的最根本、最有效的方法。根管预备及成形则是根管治疗成功的关键。实践证明,传统的根管预备成形器械操作费时、费力,容易造成根尖偏移,根管内感染物质去除不干净、不彻底,预备不完善,最终导致炎症复发而造成根管治疗的失败。 相似文献
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根管治疗术是治疗牙髓病及根尖周病的最根本最有效的方法,良好的根尖预备是根管冲洗和充填的基础,是根管治疗成败的关键环节.使用常规方法预备后牙较细弯曲根管时,容易造成碎屑阻塞,肩台形成,器械折断,根尖偏移,根管壁侧穿,根管预备过长、过大或不足. 相似文献
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根管治疗是治疗各型牙髓炎、牙髓坏死和坏疽、各型根尖周炎最完善彻底的治疗方法．以前研究认为,根管治疗必须经过三个步骤,即根管预备、根管消毒和根管充填,而且这三个步骤缺一不可．笔者在临床实践中,采用地塞米松、甲硝唑、碘仿糊剂用于一次法根充,收到了令人满意的的效果． 相似文献
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目的评价牙科手术显微镜（Dentaloperatingmicroscope,DOM）联合超声器械处理复杂根管病例的临床效果,为推广应用显微根管治疗技术提供指导。方法收集2009年1月至2012年10月期间收治的375例显微根管治疗病例,共586个根管的数据信息,按根管钙化、根管变异遗漏、根管治疗不完善、器械分离、根管侧穿等原因分类进行统计分析,总结各种治疗类型的临床效果。结果323颗患牙成功完成治疗,成功率86．13％;521个根管成功完成治疗,成功率88．91％。疏通钙化根管、探查遗漏根管、根管再治疗、取分离器械、修补侧穿的成功率分别为85．71％、96．03％、88．52％、82．22％、90．32％。结论显微根管治疗技术处理复杂根管的成功率高,可使许多不同类型的复杂根管病例得到理想的治疗效果。 相似文献
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根管治疗术是治疗牙髓病和根尖周病最有效的方法之一,Cheung[1]的一项回顾性研究显示由本科生首诊完成根管治疗术的患牙平均6年的失败率高达44%。因此在牙体牙髓病学的临床教学中如何使实习医生正确、熟练地掌握这一技术是临床带教的重点和难点。传统的教学方法是在理论讲授后, 相似文献
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根管治疗目前是牙髓病及根尖周病的主要治疗手段和最佳选择,根管预备又是根管治疗成功的关键.但根管治疗技术较复杂,费时费力,所以临床许多医师感到根管治疗很棘手,尤其是后牙较细小根管.作者总结了一种简有效的方法--逐步前进法与逐步后退法联合应用,大大缩短了就诊时间,并且取得了良好疗效. 相似文献
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《教育教学论坛》2015,(36)
根管治疗术是口腔医学专业本科生临床教学中的重点和难点之一。虽然实习生经过前期本科教学及临床前实验室教学,具备了一定的专业知识和基本操作技能,但进入临床实习仍然存在诸多问题。如:对牙体牙髓疾病复杂性认知的不足,临床操作技能欠缺,主要表现为:患者对实习医生信任度较低、依从性差,实习医生完成根管治疗操作时间增长,根管治疗术并发症发生机率增高。分析出现问题的原因主要有:根管治疗操作技术复杂,根管系统解剖结构复杂,实习医生临床接诊技巧及操作技术有待提高。对此,我们在对本科生的临床教学采用对应措施,并在临床实践中加以总结与完善,较好完成了根管治疗术的临床教学工作。 相似文献
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目的：观察新型机用镍钛器械ProTaper根管预备的临床疗效。方法：选取患急、慢性牙髓炎或根尖周炎的磨牙82颗,176个根管。随机分为试验组和对照组,试验组采用ProTaper机用镍钛器械及冠向下技术进行根管预备;对照组采用手用不锈钢K型锉和逐步后退技术进行根管预备。两组均采用侧向加压法充填根管,比较治疗前后的X光片,评价根管预备和充填效果。结果：试验组根管预备时间明显短于对照组,试验组根管预备后并发症的发生率明显少于对照组。结论：ProTaper机用镍钛器械预备根管快速有效,根管成型、根充效果好,并发症少,值得临床推广。 相似文献
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刘爱华 《泰州职业技术学院学报》2004,4(6):37-39
CH作为盖髓剂、活髓切断剂、年轻恒牙根管充填剂，其治疗机理已被深入研究，其疗效也得到肯定。近年来，CH作为根管内消毒药物，日益受到关注。CH在儿童牙科根尖诱导成形术、活髓切断术、盖髓术中取得了成功，具有可靠的临床应用价值。 相似文献
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目的寻求一种能够有效地保存乳牙生活根髓,提高活髓切断术成功率的方法．方法：选择102只患牙用2％戊二醛固定根髓断面后用含戊二难之盖髓剂盖髓,然后充填并观察半年至1年疗效,结果术后半年成功率为97．1％,术后1年成功率为95．7％,结论2％戊二醛法活髓切断术可大量替代神剂失活干尸术．具有操作安全,疗程缩短为一次等优点。 相似文献
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Wen Sun Hongyu Chen Yi Zhong Wei Zhang Fengqing Chu Lin Li Yue Chen Xiang Wang Qirui Wang Yuxin Wang Yongyue Wei Laikui Liu Yan Xu 《Anatomical sciences education》2022,15(3):566-575
Dental anatomy is an integrated, core fundamental dental course, which prepares students for all future clinical dental courses. This study aimed to build up an online dental learning platform of micro-computed tomography-based three-dimensional (3D) tooth models with pulp cavity, and to further evaluate its effectiveness for dental anatomy education using a cohort study. First, ninety-six extracted permanent teeth were scanned by micro-computed tomography and the enamel, dentine, and pulp cavity of each was distinguished by different grey-scale intensities using Mimics software. Three-dimensional images allowed further discrimination and insights into permanent three-rooted premolars, central tip, and dental diseases including deep caries and wedge-shaped defects. Furthermore, a second mesiobuccal canal (MB2) in maxillary permanent molar teeth and Vertucci type III root canal configuration in mandibular anterior teeth could be detected using the 3D analytical tool. A digitized 3D tooth model learning platform was implemented. Last, two groups of dental students were assessed to evaluate the effect of 3D models on dental anatomy education. Participants in the Digital group were allowed to use the online dental learning platform freely after class, while the participants in the Traditional group were not. Assessment quizzes showed that participants' scores improved in the Digital group with the use of the learning platform compared with scores in the Traditional group. A questionnaire survey indicated that the participants had a positive attitude toward the 3D models. Thus, adding digital 3D resources to a traditional curriculum may have a positive effect on academic achievements. 相似文献
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扬州“世界名城”战略背景下运河文化旅游开发 总被引：1，自引：1，他引：0
陈菲 《蒙自师范高等专科学校学报》2014,(5):62-66
扬州是古运河的发端之地,是运河沿线最重要的节点城市。扬州段古运河是最古老、原有风貌保存最完好、历史遗迹和人文景观最丰富的一段。扬州是大运河联合申遗牵头城市,是拥有遗产点最多的城市之一。研究着重于扬州应如何充分利用好运河文化资源发展运河旅游,提升城市知名度,从而打造世界名城。 相似文献
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漕粮海运是晚清最重要的漕粮运输方式。这种运输方式的变化，对清代运河经济区和沿海经济区产生了非常重要的影响。河运漕粮的盛行，直接推动了运河沿岸城镇的繁荣与商品经济的发展。一方面，漕粮海运是构成运河带经济区衰落的重要原因。另一方面，漕粮海运对沿海经济的兴起起了推动作用。它对沿海经济的影响，由点到面，重点集中于若干个与漕运相关的城市。 相似文献
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The present drinking water purification system in Egypt Uses surface water as a raw water supply without a pre-liminary filtration process.On the other hand,chlorine gas iS added as a disinfectant agent in two steps,pre- and post.chlorination.Due to these reasons most of water treatment plants suffer low fltering effectiveness and produce the trihalomethane (THM) species as a chlorination by-product.The Ismailia Canal represents the most distal downstream of the main Nile Rivet.ThUS its water contains all the proceeded pollutants discharged into the Nile.In addition.the downstream reaches of the canal act as an agricultural drain during the closing period of the High Dam gates in January and February every year.Moreover,the wide in-dustrial zone along the upstream course of the carlal enriches the canal water with high concentrations of heavy metals.The obtained results indicate that the canal gains up to 24.06×106m3 of water from the surrounding shallow aquifer during the closing period ofthe High Dam gates,while during the rest ofthe year,the callal acts as an influent stream losing about 99.6×106m3 of its water budget.The reduction oftotaI organic carbon(TOC) and suspended particulate mattes(SPMs)should be one of the central goals of any treatment plan to avoid the disinfectants by-products.The combination of sedimentation basins.gravel pre-filtration and slow sand filtration,and underground passage with microbiological oxidation-reduction and adsorption criteria showed good removal of parasites and bacteria and complete elimination of TOC.SPM and heavy metals.Moreover,it reduces the use of disinfectants chemicals and lowers the treatment costs.However,this purification system under the arid climate prevailing in Egypt should be tested and modified prior to application. 相似文献
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对42人47颗早期牙隐裂患牙,用作者提出的综合方法治疗后定期追踪2年以上,观察结果:总的牙齿保存率为95.74％,其中有26例患牙功能良好,临床检查和牙髓活力正常,结果提示:38.30％的早期牙隐裂患牙,其隐裂继续加深和开髓病变的发生均不易控制,宜及早做牙髓治疗和全冠修复。 相似文献