中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (25): 3764-3770.doi: 10.3969/j.issn.2095-4344.2016.25.018

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

60Co放射及微量元素锌对钛种植体固位强度的影响

陈海军1,林均舟1,钱奇春1,于淑湘1,南福清1,杨博程1,张 腾1,张静波1,张安生2   

  1. 1解放军第九十七医院口腔科,江苏省徐州市 221004;2解放军73087部队医院,江苏省徐州市 221011
  • 收稿日期:2016-04-02 出版日期:2016-06-17 发布日期:2016-06-17
  • 通讯作者: 张安生,博士,主治医师,解放军73087部队医院,江苏省徐州市 221004
  • 作者简介:陈海军,男,1964年生,安徽省萧县人,汉族,1996年解放军第四军医大学口腔医学院毕业,硕士,主任医师,主要从事口腔种植体骨界面力学分析的研究。

Effects of 60Co irradiation and trace element zinc on fixation strengths of titanium implant

Chen Hai-jun1, Lin Jun-zhou1, Qian Qi-chun1, Yu Shu-xiang1, Nan Fu-qing1, Yang Bo-cheng1, Zhang Teng1, Zhang Jing-bo1, Zhang An-sheng2   

  1. 1Department of Stomatology, the 97th Hospital of Chinese PLA, Xuzhou 221004, Jiangsu Province, China; 2Hospital of the 73087 Troop of Chinese PLA, Xuzhou 221011, Jiangsu Province, China
  • Received:2016-04-02 Online:2016-06-17 Published:2016-06-17
  • Contact: Zhang An-sheng, Ph.D., Attending physician, Hospital of the 73087 Troop of Chinese PLA, Xuzhou 221011, Jiangsu Province, China
  • About author:Chen Hai-jun, Master, Chief physician, Department of Stomatology, the 97th Hospital of Chinese PLA, Xuzhou 221004, Jiangsu Province, China

摘要:

文章快速阅读:

 

文题释义:
钛种植体:种植术后种植体能否与牙槽骨形成骨性结合是影响种植术成败的关键指标,也是种植体行使功能的生物学基础。种植术完成后,种植体的良好生物相容性是能否促使种植体与人体组织间相互作用,并在种植体-骨界面产生骨性结合的关键。钛种植体是目前临床应用最为广泛的种植体,一方面金属钛具有良好的物理性能和机械性能,另一方面金属钛还具有良好的生物相容性,是目前较为理想的制作种植体的材料。
种植体固位强度:种植体置入后能否承受咀嚼所带来的各种应力是种植术成功与否的关键所在。因此对一种种植体或者种植方法的评估必须对种植体的固位强度进行检测,常用的方法是取材后应用力学测试仪对固位力进行检测,而种植体固位强度(MPa)=种植体固位力/种植体表面积。
 
摘要
背景:癌症患者术后放疗可能对种植体固位产生不利影响。
目的:观察60Co放射及微量元素锌对钛种植体固位强度的影响。
方法:选择成年雄性家兔36只,双侧胫骨近心端各置入1枚钛种植体,建立钛种植体动物模型,随机分为对照组、补锌组、放疗组和放疗补锌组。补锌组动物肌注10 g/L硫酸锌,4 mg/kg,1次/d;对照组给予相同剂量的生理盐水;放疗组动物种植部位给予45 Gy的60Co照射并肌注生理盐水;放疗补锌组给予60Co照射的同时补锌。分别于术后1,4,12周处死动物,测量并比较各组钛种植体固位强度。
结果与结论:①补锌能够使种植体获得更高的固位强度,并且在术后4周达到较高水平;②60Co照射可以显著抑制种植体固位强度,60Co照射后补锌仍可以提升种植体固位强度;③结果提示,放疗术后适量的补锌能够减轻放疗对种植体固位的不利影响。

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

ORCID: 0000-0002-6410-0671(陈海军)

关键词: 生物材料, 口腔生物材料, 种植体, 微量元素锌, 放射, 60Co照射, 固位强度

Abstract:

BACKGROUND: Irradiation therapy in the cancer patients after surgery may have negative effects on implant fixation.

 
OBJECTIVE: To observe the effects of 60Co irradiation and trace element zinc on fixation strengths of titanium implant.
METHODS: Thirty-six adult male rabbits were involved. One piece of titanium implant was separately placed into the bilateral proximal tibial heads in rabbits to set up animal models of titanium implants. The animals were randomly divided into control group, zinc supplement group, 60Co irradiation group and 60Co irradiation and zinc supplement group. Zinc sulfate of 10 g/L was administered intramuscularly to animals in the zinc supplement group at the dose of 4 mg/kg once per day, and those in the control group were treated with saline at the same dose. The animals in the 60Co irradiation group received 60Co irradiation at the dose of 45 Gy and saline by intramuscular injection. Those in the 60Co irradiation and zinc supplement group received 60Co irradiation and zinc sulfate. The animals were killed at 1, 4 and 12 weeks after treatment. The fixation strengths were measured and compared among groups.

RESULTS AND CONCLUSION: (1) Zinc supplement made the titanium implants have higher fixation strengths, and reach a high level at 4 weeks after surgery. (2) 60Co irradiation significantly inhibited the fixation strengths of the implants. After 60Co radiation, zinc supplement still could promote fixation strengths of titanium implants. (3) It is indicated that amount of zinc supplement after irradiation therapy can alleviate the negative effects of irradiation on implant fixation.

 

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

 

Key words: Cobalt, Zinc, Radiotherapy, Tissue Engineering

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