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A Comparison of Shear Bond Strength between Three Adhesive Systems and Dentin
Umeå University, Faculty of Medicine, Department of Odontology.
Umeå University, Faculty of Medicine, Department of Odontology.
2016 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Dental adhesive systems have developed very fast during the last decades. The adhesive systems have different chemical compositions and number of working steps. The aim of this study was to compare the differences between three dentin - adhesive systems/composite combinations by means of shear strength. The null hypothesis was that there were no differences between the three adhesive systems. Intact premolars and molars were collected and stored up to three months in Milli-Q® water in a refrigerator. After preparation, 18 teeth were cut in halves and embedded in acrylic resin and stored in Milli-Q® water. The application of the different adhesive systems were made according to the manufacturers’ instructions. A dental composite was applied, light cured and the shear strength was registered with the UltraDent Tester machine. All data was analyzed statistically by using a two-sided Mann Whitney U test. Statistically significant differences were registered between the three systems, p<0.5. The etch-and rinse, three-step adhesive system had a shear strength of 35.5 MPa with the confidential interval 33.1-37.9 MPa, the two-step etch-and rinse adhesive system had 14.2 MPa with confidential interval of 10.5-17.9 MPa, while the one-step system had a shear strength to dentin of 26.0 MPa with confidential interval 22.0-29.9 MPa, i.e. higher than that of the two-step system. The null hypothesis was rejected, since all three systems differed in shear strength. The etch-and-rinse, three-step system had higher shear strength than the other two systems studied, two-step etch-and-rinse and one-step self-etch adhesive systems.

 

Place, publisher, year, edition, pages
2016.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:umu:diva-131252OAI: oai:DiVA.org:umu-131252DiVA: diva2:1073143
Educational program
Dentistry Programme
Supervisors
Examiners
Available from: 2017-02-09 Created: 2017-02-09 Last updated: 2017-02-09Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf