锶强化生物活性玻璃牙釉质粘合树脂的抗菌性能与机械性能测试

摘要/Abstract

摘要： 目的　通过向正畸牙釉质粘合树脂中添加锶强化生物活性玻璃，并对其抗菌性能及机械性能进行测试，寻求合适的添加比例，为正畸临床应用提供理论依据。方法　分别将质量分数为1%、2%、3%、4%、5%的锶强化生物活性玻璃掺入到牙釉质粘合树脂中作为实验组:1、2、3、4、5组，未掺入锶强化生物活性玻璃的牙釉质粘合树脂作为对照组:0组。采用抑菌环法、贴膜法对以上各组进行抑菌活性测试；应用万能试验机对以上各组的剪切强度进行测试，观察并记录托槽脱落后牙面牙釉质粘合树脂残留指数(ARI)。结果　各实验组及对照组均未出现抑菌环，实验组4、5组抗菌率达到99.9%，具有强抗细菌作用；实验各组的剪切强度与对照组相比，均有显著性差异（P＜0.05）；实验各组之间比较，随掺入比例增加，剪切强度呈现降低趋势，但无统计学差异（P＞0.05）；实验各组剪切强度均在临床可接受的剪切强度范围内，能够满足正畸临床要求；实验各组及对照组牙面均有牙釉质粘合树脂残留，ARI计分均在2-4分之间，各组间ARI计分比较无统计学差异（P＞0.05）。结论　掺入4%质量分数的锶强化生物活性玻璃的正畸牙釉质粘合树脂即表现出强抗菌作用；剪切强度能够达到正畸临床需要；并对釉质表面粘合树脂的残留量无影响。

关键词: 锶强化生物活性玻璃, 牙釉质粘合树脂, 抗菌性, 机械性能

Abstract: Abstract：　Objective　By adding a strontium intensived bioactive glass to the orthodontic enamel adhesive resin and testing its antibacterial property and mechanical property, the study was trying to seek the proper proportion which can provide the theoretical basis for orthodontic clinical application. Methods　1%, 2%, 3%, 2% and 5%(mass fraction) of strontium intensived bioactive glass were respectively added into the enamel adhesive resin and were numbered as five experimental groups: group 1, 2, 3, 4, 5 and there was a control group: group 0 without adding strontium intensived of bioactive glass.Bacteriostatic ring method and sticking membrane?method were used to test the antimicrobial activity and the universal testing machine was used to test the shear strength of each group above; the study also observed and recorded the adhesive residue index (ARI). Results　Bacteriostatic ring did not appeare among all groups and sticking membrane?method measured the antibacterial rate indicating that the antibacterial rate of group 4 and group 5 were 99.9%. These two groups had strong antimicrobial properties. The shear strength of experimental groups had significant difference(P<0.05) comparing to control group 0 but the difference among experimental groups had no statistical significance (P>0.05), and the shear strength of each group can meet the clinical needs. The tooth surface of experimental groups and control group had enamel adhesive resin residual and ARI scores were from 2 to 4 and the ARI results had no statistically significant difference among groups (P>0.05). Conclusions　Adding 4%(mass fraction) of strontium intensived bioactive glass to orthodontic enamel adhesive resin had strong antibacterial effect and the shear strength can meet the need of orthodontic clinical but it had no effect on the amount of adhesive resin residue of enamel surface .

Key words: Strontium intensived bioactive glass, Othodontic enamel adhesive, Antibacterial property, Mechanical property

中图分类号:

R783.1

唐冠群孟钰博台银霞王秋玉李雷刘一儒朱宪春. 锶强化生物活性玻璃牙釉质粘合树脂的抗菌性能与机械性能测试[J]. , 2016, 36(9): 796-800.

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