中国组织工程研究

中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (25): 4009-4013.doi: 10.3969/j.issn.2095-4344.2014.25.013

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

不同热牙胶旁路充填牙根表面的温度变化

齐  鲁1，王  星2，吴佩玲1   

  1. 1新疆医科大学第二附属医院口腔科，新疆维吾尔自治区乌鲁木齐市  830063；2新疆医科大学第一附属医院口腔修复科，新疆维吾尔自治区乌鲁木齐市  830054
  • 收稿日期:2014-05-13 出版日期:2014-06-18 发布日期:2014-06-18
  • 通讯作者: 吴佩玲，主任医师，博士生导师，中华口腔医学会新疆分会常委，新疆医科大学第二附属医院口腔科，新疆维吾尔自治区乌鲁木齐市 830063
  • 作者简介:齐鲁，男，1981年生，汉族，2010年新疆医科大学毕业，硕士，主治医师，中华口腔医学会会员，主要从事口腔牙体牙髓病研究。 并列第一作者：王星，女，1982年生，汉族，2010年新疆医科大学毕业，硕士，主治医师，中华口腔医学会会员，主要从事口腔修复学研究。
  • 基金资助:

    新疆医科大学科研创新基金(XJC201243)

Changes of root surface temperature generated by different bypassing warm gutta-percha obturation methods

Qi Lu1, Wang Xing2, Wu Pei-ling1   

  1. 1Department of Stomatology, Second Affiliated Hospital of Xinjiang Medical Universiry, Urumqi 830063, Xinjiang Uygur Autonomous Region, China; 2Department of Prosthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Received:2014-05-13 Online:2014-06-18 Published:2014-06-18
  • Contact: Wu Pei-ling, Chief physician, Doctoral supervisor, Department of Stomatology, Second Affiliated Hospital of Xinjiang Medical Universiry, Urumqi 830063, Xinjiang Uygur Autonomous Region, China
  • About author:Qi Lu, Master, Attending physician, Department of Stomatology, Second Affiliated Hospital of Xinjiang Medical Universiry, Urumqi 830063, Xinjiang Uygur Autonomous Region, China Wang Xing, Attending physician, Master, Department of Prosthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China Qi Lu and Wang Xing contributed equally to this work.
  • Supported by:

    Scientific Research Innovation Foundation of Xinjiang Medical University, No. XJC201243

PDF

643

被引次数

10

摘要：

背景：热牙胶充填可以实现完善的三维根管充填效果，但由于扁根管结构的特殊性，特别是在旁路预备过程中，部分牙体组织被过度切削造成局部区域牙体组织薄弱与不规则，同时分离器械为导热良好的金属，那么热牙胶在操作过程中产生的热量是否会烧伤牙周组织？
目的：利用红外成像仪分析两种热牙胶充填方法在扁根管内器械分离行旁路充填牙根表面的温度变化。
方法：选取40颗扁根管离体人下颌第一前磨牙，将新的15#不锈钢K锉分离在距根尖3 mm处，分离长度      3 mm。在根管手术显微镜下采用TF镍钛锉进行根管旁路预备，随机分为2组，每组20颗，分别运用Thermafil热牙胶充填方法与E&Q plus热牙胶垂直加压充填方法进行根管旁路充填。采用红外成像仪测定根管充填前后离体牙牙根表面的温度变化。
结果与结论：两种热牙胶充填方法在扁根管内器械分离行旁路充填，均引起牙根表面温度升高，但均小于    10 ℃：Thermafil热牙胶充填组温度变化范围为3.2-8.1 ℃，平均4.97 ℃；E&Q plus热牙胶垂直加压充填组变化范围为5.5-9.8 ℃，平均为7.35 ℃，两组温度变化值比较差异有显著性意义(P < 0.05)。表明Thermafil热牙胶充填方法在扁根管内器械分离行旁路充填时会导致牙根表面温度升高，但不会烧伤牙周组织，其充填安全性优于E&Q plus热牙胶垂直加压充填法。


中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程


全文链接：

关键词: 生物材料, 口腔生物材料, 扁根管, 旁路热牙胶充填, 牙根表面温度

Abstract:

BACKGROUND: Obturation with warm gutta-percha can achieve perfect three-dimensional root canal obturation effect. Due to specific structure of oval canal, particularly in the bypass preparation process, excessive cutting of local tooth tissue may lead to tooth tissue thinning and irregular shape. The separation equipment is the metal with good heat conduction, so the heat caused by the bypassing warm gutta-percha obturation would burn periodontal tissue remains controversial.
OBJECTIVE: To investigate the changes of root surface temperature produced by two bypassing warm gutta-percha obturation for the separation instrument in oval canal in vitro by using infrared thermography.
METHODS: Forty mandibular first premolars were harvested from oval canals, and were separated using stainless steel 15# K file at apical 3 mm, with the length of 3 mm. The root canal bypassing was prepared using TF nickel-titanium file under operating microscope. The teeth were randomly divided into two groups, with
20 teeth in each group, and were obturated with the Thermafil warm gutter-percha and E&Q plus warm gutta-percha vertical compaction, respectively. An infrared thermoviewer was used to measure the external root surface temperature before and after the obturation.
RESULTS AND CONCLUSION: Two warm gutta-percha obturation methods used for separating instruments bypassing in the oval root canal, had both caused the rise of root surface temperature, which was less than 10 ℃. In the Thermafil group, the temperature changes were 3.2-8.1 ℃ and the average change was 4.97 ℃. In the vertical condensation group, the temperature changes were 5.5-9.8 ℃ and the average change was 7.35 ℃. There were significant differences in the change of root surface temperature between the two groups (P < 0.05). Thermafil warm gutter-percha obturation would increase the root surface temperature, but cannot damage periodontal tissues. It is more secure than warm gutta-percha vertical condensation.


中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程


全文链接：

Key words: tooth root, mouth, temperature

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