Bond strength of an adhesive polymerized under nitrogen

Shane L. Schvaneveldt, William F. Rozmajzl, Wayne W. Barkmeier, Mark A. Latta

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Purpose: To evaluate the use of nitrogen, in conjunction with visible light polymerization, for improving composite-to-dentin bond strengths. Materials and Methods: Composite cylinders were bonded to dentin with Scotchbond Multi-Purpose. Immediate (Groups 1- 4) and 24-hour (Groups 5-8) strengths were determined for the following two adhesive application and two polymerization techniques: Groups 1 & 5: gentle air thinning of adhesive and polymerization with conventional visible light curing (VLC) unit; Groups 2 and 6: aggressive air thinning of adhesive and conventional VLC; Groups 3 and 7: gentle air thinning of adhesive and polymerization in nitrogen environment with modified VLC unit; and Groups 4 and 8: aggressive air thinning of adhesive and polymerization in nitrogen environment with modified VLC unit. Results: The immediate bond strengths (MPa) were: Group 1: 15.1 ± 1.8, Group 2: 6.1 ± 2.1, Group 3: 17.8 ± 3.1, Group 4: 15.8 ± 2.0. The 24-hour strengths were: Group 5: 26.7 ± 4.4, Group 6: 13.5 ± 7.5, Group 7: 24.1 ± 5.7, Group 8: 26.4 ± 4.3. Visible light polymerization of a thinned layer of adhesive resin in a nitrogen environment produced significantly higher immediate and 24-hour bond strengths than when compared to visible light polymerization in ambient air.

Original languageEnglish
Pages (from-to)157-160
Number of pages4
JournalAmerican Journal of Dentistry
Volume9
Issue number4
StatePublished - 1996

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Polymerization
Adhesives
Nitrogen
Light
Air
Dentin

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

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Bond strength of an adhesive polymerized under nitrogen. / Schvaneveldt, Shane L.; Rozmajzl, William F.; Barkmeier, Wayne W.; Latta, Mark A.

In: American Journal of Dentistry, Vol. 9, No. 4, 1996, p. 157-160.

Research output: Contribution to journalArticle

Schvaneveldt, Shane L. ; Rozmajzl, William F. ; Barkmeier, Wayne W. ; Latta, Mark A. / Bond strength of an adhesive polymerized under nitrogen. In: American Journal of Dentistry. 1996 ; Vol. 9, No. 4. pp. 157-160.
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AU - Rozmajzl, William F.

AU - Barkmeier, Wayne W.

AU - Latta, Mark A.

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N2 - Purpose: To evaluate the use of nitrogen, in conjunction with visible light polymerization, for improving composite-to-dentin bond strengths. Materials and Methods: Composite cylinders were bonded to dentin with Scotchbond Multi-Purpose. Immediate (Groups 1- 4) and 24-hour (Groups 5-8) strengths were determined for the following two adhesive application and two polymerization techniques: Groups 1 & 5: gentle air thinning of adhesive and polymerization with conventional visible light curing (VLC) unit; Groups 2 and 6: aggressive air thinning of adhesive and conventional VLC; Groups 3 and 7: gentle air thinning of adhesive and polymerization in nitrogen environment with modified VLC unit; and Groups 4 and 8: aggressive air thinning of adhesive and polymerization in nitrogen environment with modified VLC unit. Results: The immediate bond strengths (MPa) were: Group 1: 15.1 ± 1.8, Group 2: 6.1 ± 2.1, Group 3: 17.8 ± 3.1, Group 4: 15.8 ± 2.0. The 24-hour strengths were: Group 5: 26.7 ± 4.4, Group 6: 13.5 ± 7.5, Group 7: 24.1 ± 5.7, Group 8: 26.4 ± 4.3. Visible light polymerization of a thinned layer of adhesive resin in a nitrogen environment produced significantly higher immediate and 24-hour bond strengths than when compared to visible light polymerization in ambient air.

AB - Purpose: To evaluate the use of nitrogen, in conjunction with visible light polymerization, for improving composite-to-dentin bond strengths. Materials and Methods: Composite cylinders were bonded to dentin with Scotchbond Multi-Purpose. Immediate (Groups 1- 4) and 24-hour (Groups 5-8) strengths were determined for the following two adhesive application and two polymerization techniques: Groups 1 & 5: gentle air thinning of adhesive and polymerization with conventional visible light curing (VLC) unit; Groups 2 and 6: aggressive air thinning of adhesive and conventional VLC; Groups 3 and 7: gentle air thinning of adhesive and polymerization in nitrogen environment with modified VLC unit; and Groups 4 and 8: aggressive air thinning of adhesive and polymerization in nitrogen environment with modified VLC unit. Results: The immediate bond strengths (MPa) were: Group 1: 15.1 ± 1.8, Group 2: 6.1 ± 2.1, Group 3: 17.8 ± 3.1, Group 4: 15.8 ± 2.0. The 24-hour strengths were: Group 5: 26.7 ± 4.4, Group 6: 13.5 ± 7.5, Group 7: 24.1 ± 5.7, Group 8: 26.4 ± 4.3. Visible light polymerization of a thinned layer of adhesive resin in a nitrogen environment produced significantly higher immediate and 24-hour bond strengths than when compared to visible light polymerization in ambient air.

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