The influence of autoclave sterilization on elastic module and flexural strength of five types of posts
- VernacularTitle:高温高压消毒对五种桩挠曲强度与弹性模量的影响
- Author:
Zunyi WANG
;
Yan WEI
;
Xuliang DENG
;
Zhihui SUN
- Publication Type:Journal Article
- Keywords:
autoclave sterilization;
elastic module;
flexural strength;
fiber post
- From:
Journal of Xi'an Jiaotong University(Medical Sciences)
1982;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To research the influence of autoclave sterilization on elastic module and flexural strength of five types of posts.Methods Shidelong carbon,glass and quartz fiber post,tenax glass fiber post and Anthogyr titanium post were chosen,and all the samples were divided into two groups which included five subgroups according to the model of posts,each subgroup including six samples.Experimental groups were autoclave sterilized(50 min at 134℃ and 2.2MPa),While the control groups were not.With three point loading system,elastic module and flexural strength of all the samples were measured.Results were statistically analyzed to find the difference between them.Results There was no statistical difference between Shidelong carbon,glass,quartz fiber post and Tenax glass fiber post in elastic module and flexural strength in both experimental group and control group,while Anthogyr titanium post gained the highest elastic module and flexural strength.Paired-samples t test also showed there was no statistical difference between experimental group and control group in elastic module and flexural strength.Conclusion Fiber posts perfectly meet the need of clinical use on flexural strength.Furthermore,with elastic module similar to dentin and much lower than metal posts,fiber posts will help to protect the remaining tooth structure from fracture.Autoclave sterilization has a little influence on elastic module and flexural strength of posts,which allows practitioners to systematically sterilize the posts in clinic.
