华西口腔医学杂志

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球囊式中空赝复体用硅橡胶的生物安全性研究

田艾 梁星 廖健 孙旭 滕敏华 张利 陈悦   

  1. 口腔疾病研究国家重点实验室 华西口腔医院修复科(四川大学),成都 610041
  • 出版日期:2014-12-01 发布日期:2014-12-01
  • 通讯作者: 陈悦,副教授,博士,E-mail:chenyuehappy@sina.com
  • 作者简介:田艾,博士,E-mail:297379636@qq.com
  • 基金资助:

    四川省科技支撑计划基金资助项目(0040305301409)

The biological safety evaluation of a new developed silicone rubber for inflatable silastic prosthesis

Tian Ai, Liang Xing,Liao Jian, Sun Xu, Teng Minhua, Zhang Li, Chen Yue.   

  1. State Key Laboratory of Oral Diseases, Dept. of Prosthodontics,West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
  • Online:2014-12-01 Published:2014-12-01

摘要:

目的 初步评价球囊式中空赝复体用硅橡胶(SRISP)的生物安全性,为后期临床应用提供依据。方法 参照国家标准GB/T 16886.10—2005、YY/T 0127.13—2009和GB/T 16886.11—2011规定的方法,采用最大剂量致敏试验、口腔黏膜刺激试验以及短期全身毒性试验(经口途径)评价SRISP的体内生物安全性。结果 最大剂量致敏试验:豚鼠腹部移去敷贴24、48、72 h后,无红斑、水肿,致敏率为0,SRISP无潜在致敏性;口腔黏膜刺激试验:金黄地鼠缝合部位黏膜未见出血、肿胀,组织学观察未出现病理性改变,SRISP无口腔黏膜刺激性;短期全身毒性试验:大鼠未见临床毒性体征,体重稳定增长,灌胃前后实验组和对照组大鼠体重与体重相对增长率差异无统计学意义(P>0.05),SRISP无短期全身毒性。结论 经动物实验表明SRISP具有良好的体内生物安全性,有望用于制作赝复体以修复颌骨缺损。

关键词: 硅橡胶, 赝复体, 生物安全性

Abstract:

Objective The biological safety of a new developed silicone rubber for inflatable silastic prosthesis (SRISP)was evaluated. Methods Following the GB/T 16886.10-2005 standard, YY/T 0127.13-2009 standard, and GB/T 16886.11-2011 standard, samples were prepared and tested by animal experiments, such as guinea pig maximization test, oral mucousmembrane irritation test, and short-term systemic toxicity test (oral route). Results No obvious erythema and edema in theguinea pig abdominal skin were observed after 24, 48, and 72 h of stimulating touch, thus indicating that SRISP does notcause potential skin sensitivity. No local response to SRISP was found, and the visual observation and pathological findingsof oral mucosa were normal and similar to that of the control group. Therefore, SRISP had no irritation response to oralmucosa. No clinical signs of toxicity were observed in rats, and no significant differences in weight and weight relativegrowth rate between extract group and blank control group (P>0.05) were found. Thus, SRISP had no short-term systemictoxicity. Conclusion These results indicated that SRISP met the requirement of biomedical materials and had good biosecurity.

Key words: silicone rubber, prosthesis, biological safety