TY - JOUR
T1 - Polymerization shrinkage evaluation of restorative resin-based composites using fiber Bragg grating sensors
AU - Lins, Rodrigo
AU - Vinagre, Alexandra
AU - Alberto, Nélia
AU - Domingues, Maria F.
AU - Messias, Ana
AU - Martins, Luís R.
AU - Nogueira, Rogério
AU - Ramos, João C.
N1 - Funding Information:
Funding: This work was funded by FCT/MEC through national funds and when applicable co-funded by FEDER–PT2020 partnership agreement under the project UID/EEA/50008/2018, within PREDICT (FCT-IT-LA) (N.A.) and REAct (FCT-IL-LA) (M.F.D) scientific actions.
Funding Information:
This work was funded by FCT/MEC through national funds and when applicable co-funded by FEDER-PT2020 partnership agreement under the project UID/EEA/50008/2018, within PREDICT (FCT-IT-LA) (N.A.) and REAct (FCT-IL-LA) (M.F.D) scientific actions
Publisher Copyright:
© 2019 by the authors.
PY - 2019/5/1
Y1 - 2019/5/1
N2 - The purpose of this study was to compare the linear polymerization shrinkage of different restorative resin-based composites (RBCs) using fiber Bragg grating (FBG) sensors. Five RBCs were evaluated: Zirconfill® (ZFL); Aura Bulk-Fill (ABF); Tetric® N-Ceram Bulk-Fill (TBF); FiltekTM Bulk-Fill (FBF); and Admira Fusion-Ormocer® (ADF). Ten samples per resin were produced in standardized custom-made half-gutter silicone molds. Two optical FBG sensors were used to assess temperature and polymerization shrinkage. Light curing was performed for 40 s and polymerization shrinkage was evaluated at 5, 10, 40, 60, 150, and 300 s. Statistical analysis was accomplished for normal distribution (Shapiro-Wilk, p > 0.05). Two-way repeated measures ANOVA with Greenhouse-Geisser correction followed by Bonferroni0s post-hoc test was used to analyze the linear shrinkage data (p < 0.05). ZFL showed the highest linear shrinkage and ADF the lowest. Shrinkage increased for all RBCs until 300 s, where significant differences were found between ADF and all other resins (p < 0.05). Among bulk-fill RBCs, TBF showed the lowest shrinkage value, but not statistically different from FBF. The ADF presented lower linear shrinkage than all other RBCs, and restorative bulk-fill composites exhibited an intermediate behavior.
AB - The purpose of this study was to compare the linear polymerization shrinkage of different restorative resin-based composites (RBCs) using fiber Bragg grating (FBG) sensors. Five RBCs were evaluated: Zirconfill® (ZFL); Aura Bulk-Fill (ABF); Tetric® N-Ceram Bulk-Fill (TBF); FiltekTM Bulk-Fill (FBF); and Admira Fusion-Ormocer® (ADF). Ten samples per resin were produced in standardized custom-made half-gutter silicone molds. Two optical FBG sensors were used to assess temperature and polymerization shrinkage. Light curing was performed for 40 s and polymerization shrinkage was evaluated at 5, 10, 40, 60, 150, and 300 s. Statistical analysis was accomplished for normal distribution (Shapiro-Wilk, p > 0.05). Two-way repeated measures ANOVA with Greenhouse-Geisser correction followed by Bonferroni0s post-hoc test was used to analyze the linear shrinkage data (p < 0.05). ZFL showed the highest linear shrinkage and ADF the lowest. Shrinkage increased for all RBCs until 300 s, where significant differences were found between ADF and all other resins (p < 0.05). Among bulk-fill RBCs, TBF showed the lowest shrinkage value, but not statistically different from FBF. The ADF presented lower linear shrinkage than all other RBCs, and restorative bulk-fill composites exhibited an intermediate behavior.
KW - Bulk-fill composite resins
KW - Fiber Bragg gratings
KW - Light curing
KW - Optical fiber sensors
KW - Polymerization shrinkage
KW - Resin based-composites
UR - http://www.scopus.com/inward/record.url?scp=85066849544&partnerID=8YFLogxK
U2 - 10.3390/polym11050859
DO - 10.3390/polym11050859
M3 - Article
AN - SCOPUS:85066849544
SN - 2073-4360
VL - 11
JO - Polymers
JF - Polymers
IS - 5
M1 - 859
ER -