title: Effects of metal- and fiber-reinforced composite root canal posts on flexural properties.
abstract: The aim of this study was to observe the effects of different test conditions on the flexural properties of root canal post. Metal- and fiber-reinforced composite root canal posts of various diameters were measured to determine flexural properties using a threepoint bending test at different conditions. In this study, the span length/post diameter ratio of root canal posts varied from 3.0 to 10.0. Multiple regression models for maximum load as a dependent variable were statistically significant. The models for flexural properties as dependent variables were statistically significant, but linear regression models could not be fitted to data sets. At a low span length/post diameter ratio, the flexural properties were distorted by occurrence of shear stress in short samples. It was impossible to obtain high span length/post diameter ratio with root canal posts. The addition of parameters or coefficients is necessary to appropriately represent the flexural properties of root canal posts.
authors.affiliation: School of Pharmacy, Sungkyunkwan University.
authors.forename: Su-Hyeon
authors.initials: SH
authors.lastname: Kim
authors.forename: Tack-Oon
authors.initials: TO
authors.lastname: Oh
authors.forename: Ju-Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Chun-Woong
authors.initials: CW
authors.lastname: Park
authors.forename: Seung-Ho
authors.initials: SH
authors.lastname: Baek
authors.forename: Eun-Seok
authors.initials: ES
authors.lastname: Park
mesh_terms: D002244:Carbon / Q000737:chemistry*; D000077482:Carbon Fiber; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis; D004548:Elasticity; D005898:Glass / Q000737:chemistry*; D008422:Materials Testing; D008670:Metals / Q000737:chemistry*; D018583:Pliability; D011176:Post and Core Technique; D013314:Stress, Mechanical
chemical_list: D000077482:Carbon Fiber; D008670:Metals; C009753:fiberglass; D002244:Carbon