* Effect of agitation of EDTA with 808-nm diode laser on dentin microhardness.
- The aim of this study is to analyze the effect of agitation of ethylenediaminetetraacetic acid (EDTA) with diode laser at different agitation times on root dentin microhardness. Eighty-four specimens were divided randomly into seven groups, as follows: (1) distilled water, (2) 17% EDTA, (3) EDTA with 60 s ultrasonic agitation, (4) EDTA with 10 s laser agitation, (5) EDTA with 20 s laser agitation, (6) EDTA with 30 s laser agitation, and (7) EDTA with 40 s laser agitation. All of the specimens were irrigated with 5% NaOCl and distilled water except the distilled water group. Microhardness values were calculated before and after the procedures. Statistical analyses were performed using one-way ANOVA and Tukey post hoc tests. Statistically significant differences were determined between the distilled water and other groups. Also, statistically significant differences were observed between EDTA with 40 s laser agitation and EDTA, and EDTA with 10 and 20 s laser agitations. Ultrasonic agitation of EDTA affected microhardness of root dentin similar to EDTA (p > .05). All applications decreased the microhardness of root dentin when compared with distilled water. Agitation of EDTA with diode laser for 40 s caused more reduction in microhardness of root dentin when compared with EDTA.
=>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)
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