Tensile bond strength of different adhesive systems to enamel and dentin
| Autor: | Wanessa Christine de Souza-Zaroni, Regina Guenka Palma-Dibb, Juliane Cristina Ciccone-Nogueira, Letícia Caliento Seixas, Daniela Thomazatti Chimello |
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| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Time Factors
Materials science Dentistry Dental bonding dentin Methacrylate Composite Resins Dental Materials Polymethacrylic Acids Tensile Strength Materials Testing Ultimate tensile strength Dentin medicine Humans Bisphenol A-Glycidyl Methacrylate adhesive systems Composite material Dental Enamel General Dentistry bond strength Universal testing machine Enamel paint business.industry Bond strength Dental Bonding Temperature Water enamel medicine.anatomical_structure Dentin-Bonding Agents visual_art visual_art.visual_art_medium Methacrylates Stress Mechanical Adhesive business |
| Zdroj: | Brazilian Dental Journal v.18 n.2 2007 Brazilian Dental Journal Fundação Odontológica de Ribeirão Preto (FUNORP) instacron:FUNORP Brazilian Dental Journal, Volume: 18, Issue: 2, Pages: 124-128, Published: 2007 |
| Popis: | The aim of this study was to assess the tensile bond strength of four adhesive systems to enamel and dentin: Clearfil Liner Bond 2V - C, Prime&Bond NT/NRC - PB, Single Bond - SB and All Bond 2 -AB. For such purpose, 40 sound human molars were selected. Crowns were bisected in a mesiodistal direction and each half was ground until flat enamel (E) or dentin (D) surfaces were obtained. A total of 80 specimens were randomly assigned to 4 groups (n=20, 10 in enamel and 10 in dentin). After surface treatment, a composite resin (Z250; 3M) cone was prepared using a split Teflon® matrix. Bond strength was tested in an universal testing machine (0.5 mm/min). Bond strength means in MPa were: C - E: 18.66 (±2.67) and D: 21.62 (±5.29); PB - E: 18.13 (±2.96) and D: 3.19 (±1.40); SB - E: 20.06 (±6.11) and D: 16.95 (±2.57); AB - E: 18.20 (±3.94) and D: 15.94 (±4.72). Statistical analysis of data by two-way ANOVA showed that C presented the best results followed by SB. In conclusion, among the tested materials, Clearfil Liner Bond 2V self-etching primer adhesive syetem had the best performance. The substrate type influenced bond strength, being higher to enamel. Este estudo avaliou a resistência à tração de diferentes sistemas adesivos ao esmalte/dentina: Clearfil Liner Bond 2V - C, Prime&Bond NT/NRC - PB, Single Bond -SB and All Bond 2 -AB. Quarenta molares humanos hígidos tiveram suas coroas seccionadas no sentido mesio-lingual, e posteriormente lixadas até que fossem obtidas superfícies lisas de esmalte (E) ou dentina (D). Oitenta espécimes foi aleatoriamente dividido em 4 grupos (n=20, 10 em esmalte e 10 em dentina). Após o tratamento da superfície de acordo com cada sistema adesivo testado, um cone de resina composta Z250 (3M) foi preparado com uma matriz de Teflon®. O teste de tração foi realizado em uma máquina universal de ensaios (0.5 mm/min). As médias de resistência à tração (em MPa) foram: C - E: 18,66 (±2,67) e D: 21,62 (±5,29); PB - E: 18,13 (±2,96) e D: 3,19 (±1,40); SB - E: 20,06 (±6,11) e D: 16,95 (±2,57); AB - E: 18,20 (±3,94) e D: 15,94 (±4,72). A análise estatística (ANOVA a critérios e teste de Tukey) mostrou que C obteve os melhores resultados, seguido por SB. Concluiu-se que, dentre os materiais testados, o Clearfil Liner Bond 2V teve melhor desempenho, e que o tipo de substrato tratado influenciou na resistência adesiva, sendo esta maior em esmalte. |
| Databáze: | OpenAIRE |
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