Influence of remaining tooth structure and restorative material type on   stress distribution in endodontically treated maxillary premolars: A   finite element analysis

CORC > 北京大学 > 工学院

	Influence of remaining tooth structure and restorative material type on stress distribution in endodontically treated maxillary premolars: A finite element analysis
	Zhu, Junxin ; Rong, Qiguo ; Wang, Xiaoyan ; Gao, Xuejun
刊名	JOURNAL OF PROSTHETIC DENTISTRY
	2017
关键词	FRACTURE-RESISTANCE BOND STRENGTH FATIGUE RESISTANCE TEETH POST SURVIVAL MOLARS RESIN CROWNS DENTIN
英文摘要	Statement of problem. How tooth preparation and material type affect the stress distribution of endodontically treated teeth restored with endocrowns remains unclear. Purpose. The purpose of this finite element (FE) study was to determine the influence of the quantity of remaining dental tissues and material type on stress distribution in endodontically treated maxillary premolars using 3-dimensional FE analysis. Material and methods. Five 3-dimensional FE models were constructed on the basis of the restorative methods used and the quantity of preserved tooth tissues: a sound maxillary premolar, an endodontically treated maxillary premolar restored with composite resin, and endodontically treated maxillary premolars restored with endocrowns with thicknesses of 1.0 mm, 2.0 mm, and 3.0 mm. The following endocrown materials were used: Paradigm MZ100, IPS Empress, IPS e.max CAD, and In-Ceram Zirconia. Stress distributions were analyzed under vertical and oblique loads. Results. As the quantity of preserved dental tissues increased, the von Mises stress in dentin decreased, and the peak von Mises strain value of the cement layer increased. When the elastic modulus of the endocrown material increased, the von Mises stress in endocrown and dentin ihcreased, and the peak von Mises strain value of the cement layer decreased. Conclusions. Although the conservative preparation of teeth for endocrowns is likely to protect the residual tooth structure, it may cause future cohesive bonding failure. An increase in the elastic modulus of the material may benefit the durability of bonding between the endocrown and the abutment tooth; however, it may cause fracture of the residual tooth structure.; SCI(E); ARTICLE; 5; 646-655; 117
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/473705]
专题	工学院
推荐引用方式 GB/T 7714	Zhu, Junxin,Rong, Qiguo,Wang, Xiaoyan,et al. Influence of remaining tooth structure and restorative material type on stress distribution in endodontically treated maxillary premolars: A finite element analysis[J]. JOURNAL OF PROSTHETIC DENTISTRY,2017.
APA	Zhu, Junxin,Rong, Qiguo,Wang, Xiaoyan,&Gao, Xuejun.(2017).Influence of remaining tooth structure and restorative material type on stress distribution in endodontically treated maxillary premolars: A finite element analysis.JOURNAL OF PROSTHETIC DENTISTRY.
MLA	Zhu, Junxin,et al."Influence of remaining tooth structure and restorative material type on stress distribution in endodontically treated maxillary premolars: A finite element analysis".JOURNAL OF PROSTHETIC DENTISTRY (2017).