碳纤维根管桩的研制

目的研究高强度碳纤维增强复合树脂根管桩的加工成型工艺.方法用湿法制备碳纤维预浸料,在预成型模具中预成型,然后在成型模具中经特殊的工艺进行成型,最后用车床加工成预定形状的桩钉;并测试其弯曲强度、剪切强度和碳纤维含量.结果随着碳纤维含量的增加,根管桩的弯曲强度和剪切强度均逐渐增加.碳纤维含量达到67.13%时,弯曲强度和剪切强度分别达到406MPa和653.86MPa.结论高强度的碳纤维根管桩可以满足临床需要.

Development of dental posts by carbon fiber reinforced resin

Objective To exploit the proper method of producing carbon fiber reinforced composite resin(CFRC) post and core.Methods The carbon fiber was immersed in the prepared glue,then put in the self-made pre-molding mould for first molding and put in the final mould for final compression molding.The specimens were shaped into a post shape on a lathe.The transverse strength,shear strength of the specimens were measured.The carbon fiber content was measured by burning at a high temperature.Results The transverse strength and shear strength were increased with the increase of the carbon fiber content.When the carbon fiber volume of the specimens was 67.13%,the transverse strength and shear strength were 406MPa and 653.86MPa respectively.Conclusion The post made by carbon fiber reinforced composite resin can be used in clinical practice successfully.