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375291 occurrences (No.49 in the rank) during 5 years in the PubMed. [no cache] 500 found

240) Before the core build-up procedure, representative specimens from each group were chosen to determine the surface roughness (Ra) at three different areas using a contact profilometer, while after the procedure, 1.5-mm-thick discs were sectioned and the micro push-out method was used to assess the bond strength of the core build-up material to the fiber post in each group.

--- ABSTRACT ---

PMID:23929564 DOI:10.1007/s10103-013-1412-4

2015 Lasers in medical science

* Effect of Er:YAG laser pretreatment on bond strength of a composite core build-up material to fiber posts.

- The study evaluated the micro push-out bond strength of resin material (Multicore Flow) to two types of fiber posts (FP), namely fiber-reinforced composite (FRC) Postec and Radix Fiber posts using Er:YAG laser pretreatment. FP were divided into four groups, two being control groups. Before the core build-up procedure, representative specimens from each group were chosen to determine the surface roughness (Ra) at three different areas using a contact profilometer, while after the procedure, 1.5-mm-thick discs were sectioned and the micro push-out method was used to assess the bond strength of the core build-up material to the fiber post in each group. Two-way analysis of variance was used for statistical analysis with the level of significance set at p < 0.05. Scanning electron microscopy was used to analyze the post surfaces after Er:YAG laser pretreatment and to classify the failure mode after loading. The type of pretreatment (p < 0.001) and an interaction between the pretreatment and type of post (p < 0.001) had a significant effect on the bond strength, while the type of post did not (p = 0.965). The mean bond strength in the Er:YAG laser pretreatment group was significantly lower compared to the FRC Postec posts control group (p < 0.001), while there was no significant difference between the Radix Fiber posts groups (p = 0.680). Mean Ra values from the Er:YAG laser pretreatment groups were significantly higher compared to control groups (p < 0.001). Er:YAG laser pretreatment at tested parameters negatively affected the bond strength of Multicore to FP and cannot be recommended as a standard procedure.

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(3)39 of	(14)5 has	(25)2 but	(36)2 provided
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(5)37 was	(16)4 showed	(27)2 choice	(38)2 study
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(7)24 and	(18)3 are	(29)2 could	(40)2 uses
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(9)9 that	(20)3 significantly	(31)2 helped
(10)8 can	(21)2 a	(32)2 involves
(11)7 based	(22)2 against	(33)2 known

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--- WordNet output for method --- =>方法, 筋道, 秩序, 規則正しさ, 順序 Overview of noun method The noun method has 2 senses (first 1 from tagged texts) 1. (95) method -- (a way of doing something, especially a systematic way; implies an orderly logical arrangement (usually in steps)) 2. method acting, method -- (an acting technique introduced by Stanislavsky in which the actor recalls emotions or reactions from his or her own life and uses them to identify with the character being portrayed) --- WordNet end ---