The role of spacer carbon chain in acidic functional monomers on the physicochemical properties of self-etch dental adhesives

Victor P. Feitosa; Salvatore Sauro; Fabricio A. Ogliari; Jeffrey W. Stansbury; Guy H. Carpenter; Timothy F. Watson; Mario A. Sinhoreti; Americo B. Correr

doi:10.1016/j.jdent.2014.02.009

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The role of spacer carbon chain in acidic functional monomers on the physicochemical properties of self-etch dental adhesives

Journal article

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The role of spacer carbon chain in acidic functional monomers on the physicochemical properties of self-etch dental adhesives

Victor P. Feitosa, Salvatore Sauro, Fabricio A. Ogliari, Jeffrey W. Stansbury, Guy H. Carpenter, Timothy F. Watson, Mario A. Sinhoreti and Americo B. Correr

Journal of dentistry, Vol.42(5), pp.565-574

05/01/2014

DOI: 10.1016/j.jdent.2014.02.009

PMID: 24565526

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Abstract

Objectives: To evaluate the effects of acidic functional monomers with different hydrophilicity and spacer carbon chain length on the degree of conversion (DC), wettability (contact angle), water sorption (WS) and ultimate tensile strength (UTS) of experimental one-step self-etch adhesives (1-SEAs). Methods: A series of standard resin blends was prepared with each formulation containing 15 mol% of each acidic monomer. The structural variations of the acidic monomers were MEP (spacer chain with 2 carbons), MDP (10-carbons), MDDP (12-carbons), MTEP (more hydrophilic polyether spacer) and CAP-P (intermediate hydrophilicity ester spacer). Dumb-bell-shaped and disc specimens were prepared and tested for UTS and WS, respectively. DC was assessed by FTIR, while the wettability of each 1-SEA was evaluated on glass slides and flat dentine surfaces. Results were analysed with one-way ANOVA and Tukey's test (p < 0.05). Results: The outcomes showed lower UTS for CAP-P, control blend and MEP than MTEP, MDDP and MDP (p < 0.05). The degree of conversion was statistically similar for all resins (p = 0.122). On dentine, the wettability was higher (lower contact angle) with the most hydrophilic monomer MTEP. Higher WS was attained using MTEP. Different lengths of the spacer chains did not result in different wettability and WS (p > 0.05). Conclusion: At similar molar percentage, different acidic functional monomers induced similar degree of conversion and different UTS when included in a 1-SEA. However, the inclusion of highly hydrophilic monomer may increase the wettability on dentine and the WS. (C) 2014 Elsevier Ltd. All rights reserved.

Dentistry, Oral Surgery & Medicine

Life Sciences & Biomedicine

Science & Technology

Details

Title: Subtitle: The role of spacer carbon chain in acidic functional monomers on the physicochemical properties of self-etch dental adhesives
Creators: Victor P. Feitosa - Universidade Estadual de Campinas (UNICAMP)
Salvatore Sauro - Universidad Cardenal Herrera CEU
Fabricio A. Ogliari - Universidade Federal de Pelotas
Jeffrey W. Stansbury - University of Colorado Denver
Guy H. Carpenter - King's College London
Timothy F. Watson - King's College London
Mario A. Sinhoreti - Universidade Estadual de Campinas (UNICAMP)
Americo B. Correr - Universidade Estadual de Campinas (UNICAMP)
Resource Type: Journal article
Publication Details: Journal of dentistry, Vol.42(5), pp.565-574
DOI: 10.1016/j.jdent.2014.02.009
PMID: 24565526
NLM abbreviation: J Dent
ISSN: 0300-5712
eISSN: 1879-176X
Publisher: Elsevier
Number of pages: 10
Grant note: II-3A-1109-10046 / National Institute for Health Research; National Institute for Health Research (NIHR) 6850-12-0; 3110/ 2010 / CAPES; Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
Language: English
Date published: 05/01/2014
Academic Unit: Operative Dentistry
Record Identifier: 9984654471002771

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