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- Title
Comparative Effect of Rotary Microbrush Combined with Different Chemical Irrigants on Root Dentin Microhardness, Roughness and Bond Strength to an Epoxy-based Sealer.
- Authors
Simões Barbosa, Ana Flávia; Malheiro de Mello, Larissa; Teixeira, Francine Guedes; Rached-Júnior, Fuad Jacob Abi; Trindade, Thais Fantinato; Raucci-Neto, Walter; Barbosa, Ana Flávia Simões; Mello, Larissa Malheiro de
- Abstract
<bold>Purpose: </bold>This study evaluated the effect of 17% EDTA, 10% citric acid (CA), and 2% chlorhexidine (CHX) activated with a rotary microbrush (CanalBrush) on root dentin microhardness, roughness, and epoxy-based sealer bond strength.<bold>Materials and Methods: </bold>One hundred sixty single-rooted bovine incisors were instrumented and divided into 8 groups according to treatment: 1. 17% EDTA; 2. 17% EDTA+2% CHX; 3. 10% CA; 4. 10% CA+2% CHX; 5. 17% EDTA with CanalBrush; 6. 17% EDTA+2% CHX with CanalBrush; 7. 10% CA with CanalBrush; and 8. 10% CA+2% CHX with CanalBrush. Ten roots in each group were split into halves and submitted to microhardness and roughness analyses (n = 10). Following endodontic filling with AH Plus sealer, 10 roots in each group underwent push-out bond strength testing (n = 10). Data were analyzed using two-way ANOVA and Tukey's tests (α = 0.05).<bold>Results: </bold>All groups had similar microhardness values (p > 0.05) which was higher in the apical third than in the middle and cervical thirds (p < 0.05). The CanalBrush groups had higher roughness than the no-activation groups (p < 0.05), with significantly higher roughness in the cervical third than in the apical third (p < 0.05). All groups exhibited similar bond strength (p > 0.05), with the cervical third being higher, followed by the middle and apical thirds (p < 0.05).<bold>Conclusions: </bold>Microbrush activation had a direct impact on dentin roughness and did not influence the dentin microhardness or the retention of epoxy-based sealer to the root canal.
- Subjects
BOND strengths; DENTIN; MICROHARDNESS; TUKEY'S test; ROOT canal treatment; DENTAL bonding; CATTLE; DENTAL materials; BIOMEDICAL materials; MATERIALS testing; IMPACT of Event Scale; ETHYLENEDIAMINETETRAACETIC acid; DENTAL pulp cavities; ANIMALS
- Publication
Oral Health & Preventive Dentistry, 2020, Vol 18, Issue 3, p555
- ISSN
1602-1622
- Publication type
journal article
- DOI
10.3290/j.ohpd.a44692