ELIZA

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385944 occurrences (No.46 in the rank) during 5 years in the PubMed. [no cache] 500 found

76) 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).

--- 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.

--- ABSTRACT END ---

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(9)10 than	(23)4 differences	(38)2 III	(52)2 interventions
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(14)7 1	(28)3 A,	(43)2 demonstrated

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--- WordNet output for group --- =>一団にする, 集める, 分派, 集団, グループ, 分類する, 演奏家グループ, 集まる, 分ける Overview of noun group The noun group has 3 senses (first 2 from tagged texts) 1. (1345) group, grouping -- (any number of entities (members) considered as a unit) 2. (1) group, radical, chemical group -- ((chemistry) two or more atoms bound together as a single unit and forming part of a molecule) 3. group, mathematical group -- (a set that is closed, associative, has an identity element and every element has an inverse) Overview of verb group The verb group has 2 senses (first 2 from tagged texts) 1. (4) group -- (arrange into a group or groups; "Can you group these shapes together?") 2. (1) group, aggroup -- (form a group or group together) --- WordNet end ---