Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Degree of Conversion of Simplified Contemporary Adhesive Systems as Influenced by Extended Air-Activated or Passive Solvent Volatilization Modes

Full text
Author(s):
Borges, B. C. D. [1] ; Souza-Junior, E. J. [2] ; Brandt, W. C. [3] ; Loguercio, A. D. [4] ; Montes, M. A. J. R. [5] ; Puppin-Rontani, R. M. ; Sinhoreti, M. A. C. [6]
Total Authors: 7
Affiliation:
[1] Laureate Int Univ, Potiguar Univ, Dept Dent, Natal, RN - Brazil
[2] State Univ Campinas UNICAMP, Piracicaba Dent Sch, Sao Paulo - Brazil
[3] Univ Taubate, Dept Prosthodont, Sao Paulo - Brazil
[4] Univ Estadual Ponta Grossa, Ponta Grossa - Brazil
[5] Univ Pernambuco, Dept Restorat Dent, Recife, PE - Brazil
[6] Univ Estadual Campinas, Piracicaba Dent Sch, Sao Paulo - Brazil
Total Affiliations: 6
Document type: Journal article
Source: Operative Dentistry; v. 37, n. 3, p. 246-252, MAY-JUN 2012.
Web of Science Citations: 15
Abstract

This study evaluated the effect of five methods of solvent volatilization on the degree of conversion (DC) of nine one-bottle adhesive systems using Fourier transform infrared/attenuated total reflectance (FTIR/ATR) analysis. Nine adhesives were tested: Adper Single Bond 2 (SB), Adper Easy One (EO), One Up Bond F Plus (OUP), One Coat Bond SL (OC), XP Bond (RP), Ambar (AM), Natural Bond (NB), GO, and Stae. The adhesive systems were applied to a zinc-selenide pellet and 1) cured without solvent volatilization, 2) left undisturbed for 10 seconds before curing, 3) left undisturbed for 60 seconds before curing, 4) air-dried with an air stream for 10 seconds before curing, and 5) air-dried with an air stream for 60 seconds before curing. FTIR/ATR spectra were obtained, and the DC was calculated by comparing the aliphatic bonds/reference peaks before and after light activation for 10 seconds (FlashLite 1401). The DC means of each material were analyzed by one-way analysis of variance and post hoc Tukey test (p<0.05). The DC of GO and Stae adhesive systems was not affected by the five evaporation conditions. Air-drying for 60 seconds before curing yielded the highest DC for SB, EO, and OC. Extended solvent volatilization time (60 seconds) either with or without air-drying before curing provided the highest DC for AM, NB, XP, and OUP. Thus, the monomer conversion of adhesive systems was material dependent. In general, the 60-second passive or active air-drying modes to volatilize solvents before curing enhanced the degree of conversion for the one-bottle simplified adhesive systems. (AU)

FAPESP's process: 07/02800-3 - Effect of light curing modes and light curing time on degree of conversion and leachability of uncured substances of bonding systems and composite resins
Grantee:Flávio Henrique Baggio Aguiar
Support Opportunities: Regular Research Grants