The effect of CPP-ACP and Nd:YAG laser on the bond strength of softened dentin
| Autor: | Natalia Cortez Gutierrez, Anuradha Prakki, Clovis Pagani, Letícia Carvalho Coutinho Costa Perote, Maria Beatriz Beber Kamozaki |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), University of Toronto Faculty of Dentistry Department of Clinical Sciences |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Molar
Time Factors Materials science Dentistry Dental bonding Lasers Solid-State Composite Resins Statistics Nonparametric Random Allocation stomatognathic system Tensile Strength Immersion Materials Testing Ultimate tensile strength Dentin medicine Humans General Materials Science Dental Restoration Failure Irradiation Composite material Chelating Agents Analysis of Variance Bond strength business.industry Dental Bonding Reproducibility of Results Caseins Resin Cements lcsh:RK1-715 medicine.anatomical_structure Nd:YAG laser Dentin-Bonding Agents lcsh:Dentistry Adhesive business |
| Zdroj: | Brazilian Oral Research, Vol 29, Iss 1, Pp 1-7 (2015) SciELO Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Brazilian Oral Research v.29 n.1 2015 Brazilian Oral Research Sociedade Brasileira de Pesquisa Odontológica (SBPqO) instacron:SBPQO Brazilian Oral Research, Volume: 29, Issue: 1, Pages: 1-7, Published: 16 JUN 2015 |
| ISSN: | 1807-3107 1806-8324 |
| Popis: | Made available in DSpace on 2015-08-26T19:19:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2015. Added 1 bitstream(s) on 2015-08-31T13:04:41Z : No. of bitstreams: 1 S1806-83242015000100268.pdf: 225997 bytes, checksum: 97b29b6cd26768d7b27f76e095bb1573 (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The purpose of this study was to investigate the effect of CPP-ACP treatment and Nd:YAG laser on microtensile bond strength (µTBS) of softened dentin. Sixty samples were obtained from thirty sound third molars. All samples were submitted to dentin softening procedure, by the immersion of the specimens in 30 mL of Sprite Zero for 30min. Afterwards, the samples were randomly divided according to the CPP-ACP treatment: CG-Control group; MP-treated with CPP-ACP paste (MI Paste); MPP-treated with CPP-ACP+900 ppm NaF paste (MI Paste Plus). Each group was further divided according to bonding procedure: NL-No laser; L–Laser irradiation after adhesive application and before polymerization. The laser parameters used were 1.4 W, 10 Hz, 140 mJ/pulse, with an optic fiber of 320 µm, generating energy of 174 J/cm2 per pulse. All samples were restored with Clearfil SE Bond/Filtek Z350 XT. After 24 h, the restored samples were cut into beams (± 1 mm2 adhesive interface area) and subjected to a µTBS test. Data were analyzed by two-way ANOVA test and Holm-Sidak post-hoc method (α = 0.05). The treatment with CPP-ACP pastes did not significantly affect softened dentin µTBS (p = 0.070). Statistic revealed significant reduction on µTBS values for CG/L, leading to the rejection of the second null hypothesis (p < 0.001). Both CPP-ACP based pastes did not affect µTBS of softened dentin for the adhesive system utilized. The Nd:YAG laser irradiation after application of adhesive system did affect µTBS values of softened dentin samples untreated with CPP-ACP based pastes. University of Toronto Faculty of Dentistry Department of Clinical Sciences Universidade Estadual Paulista Institute of Science and Technology Department of Restorative Dentistry FAPESP: 2011/10827-4 |
| Databáze: | OpenAIRE |
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