Godderis, Lode

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Degree of conversion and monomer elution of CQ/amine and TPO adhesives

Pongprueksa, Pong; Miletić, Vesna; Janssens, Henriette; Van Landuyt, Kirsten L.; de Munck, Jan; Godderis, Lode; Van Meerbeek, Bart

(Elsevier Sci Ltd, Oxford, 2014)

TY  - JOUR
AU  - Pongprueksa, Pong
AU  - Miletić, Vesna
AU  - Janssens, Henriette
AU  - Van Landuyt, Kirsten L.
AU  - de Munck, Jan
AU  - Godderis, Lode
AU  - Van Meerbeek, Bart
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1861
AB  - Objective. To evaluate the effect of photo-initiator on the degree of conversion (DC) and elution of Bis-GMA and HEMA for 8 one-step adhesive formulations. Methods. We used Scotchbond Universal ('SBU-CQ/amine 4.0', 3M ESPE), containing about 2 wt% camphorquinone (CQ) and 2 wt% ethyl-4-dimethylamino benzoate( EDMAB), an experimental 'SBU-TPO 2.1' version, containing 2.1 wt% diphenyl(2,4,6-trimethylbenzoyl) phosphine oxide (TPO), and 6 experimental LUB adhesives (Kuraray Noritake), namely 'LUB-CQ/amine 0.7', 'LUB-CQ/amine 1.4', 'LUB-CQ/amine 4.0', 'LUBTPO 0.35', 'LUB-TPO 0.7' and 'LUB-TPO 2.0', respectively containing 0.35 wt% CQ and 0.35 wt% EDMAB, 0.7 wt% CQ and 0.7 wt% EDMAB, 2.0 wt% CQ and 2.0 wt% EDMAB, 0.35 wt% TPO, 0.7 wt% TPO, and 2.0 wt% TPO. DC was measured using micro-Raman spectroscopy. Additional specimens were immersed in ethanol for 24 h to determine the elution of Bis-GMA and HEMA using HPLC. Results. DC of the respective SBU and LUB adhesives was alike at high photo-initiator concentration. At low concentration, TPO was significantly more efficient than CQ/amine (LUB adhesives only). A statistically significant positive photo-initiator concentration effect on DC was noted for both CQ/amine and TPO (LUB adhesives only). A statistically significant inversephoto-initiator concentration effect on HEMA elution was noted for both the CQ/amine and TPO-containing LUB adhesives. A significantly strong correlation was found between DC and Bis-GMA elution (R-2 = 0.744, p = 0.026), and between DC and HEMA elution (R-2 = 0.913, p = 0.002) for the LUB adhesives. Significance. The photo-initiator kind and concentration affect DC and the Bis-GMA/HEMAelution. TPO can be used as an alternative photo-initiator for CQ/amine.
PB  - Elsevier Sci Ltd, Oxford
T2  - Dental Materials
T1  - Degree of conversion and monomer elution of CQ/amine and TPO adhesives
VL  - 30
IS  - 6
SP  - 695
EP  - 701
DO  - 10.1016/j.dental.2014.03.007
ER  - 
@article{
author = "Pongprueksa, Pong and Miletić, Vesna and Janssens, Henriette and Van Landuyt, Kirsten L. and de Munck, Jan and Godderis, Lode and Van Meerbeek, Bart",
year = "2014",
abstract = "Objective. To evaluate the effect of photo-initiator on the degree of conversion (DC) and elution of Bis-GMA and HEMA for 8 one-step adhesive formulations. Methods. We used Scotchbond Universal ('SBU-CQ/amine 4.0', 3M ESPE), containing about 2 wt% camphorquinone (CQ) and 2 wt% ethyl-4-dimethylamino benzoate( EDMAB), an experimental 'SBU-TPO 2.1' version, containing 2.1 wt% diphenyl(2,4,6-trimethylbenzoyl) phosphine oxide (TPO), and 6 experimental LUB adhesives (Kuraray Noritake), namely 'LUB-CQ/amine 0.7', 'LUB-CQ/amine 1.4', 'LUB-CQ/amine 4.0', 'LUBTPO 0.35', 'LUB-TPO 0.7' and 'LUB-TPO 2.0', respectively containing 0.35 wt% CQ and 0.35 wt% EDMAB, 0.7 wt% CQ and 0.7 wt% EDMAB, 2.0 wt% CQ and 2.0 wt% EDMAB, 0.35 wt% TPO, 0.7 wt% TPO, and 2.0 wt% TPO. DC was measured using micro-Raman spectroscopy. Additional specimens were immersed in ethanol for 24 h to determine the elution of Bis-GMA and HEMA using HPLC. Results. DC of the respective SBU and LUB adhesives was alike at high photo-initiator concentration. At low concentration, TPO was significantly more efficient than CQ/amine (LUB adhesives only). A statistically significant positive photo-initiator concentration effect on DC was noted for both CQ/amine and TPO (LUB adhesives only). A statistically significant inversephoto-initiator concentration effect on HEMA elution was noted for both the CQ/amine and TPO-containing LUB adhesives. A significantly strong correlation was found between DC and Bis-GMA elution (R-2 = 0.744, p = 0.026), and between DC and HEMA elution (R-2 = 0.913, p = 0.002) for the LUB adhesives. Significance. The photo-initiator kind and concentration affect DC and the Bis-GMA/HEMAelution. TPO can be used as an alternative photo-initiator for CQ/amine.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Dental Materials",
title = "Degree of conversion and monomer elution of CQ/amine and TPO adhesives",
volume = "30",
number = "6",
pages = "695-701",
doi = "10.1016/j.dental.2014.03.007"
}
Pongprueksa, P., Miletić, V., Janssens, H., Van Landuyt, K. L., de Munck, J., Godderis, L.,& Van Meerbeek, B.. (2014). Degree of conversion and monomer elution of CQ/amine and TPO adhesives. in Dental Materials
Elsevier Sci Ltd, Oxford., 30(6), 695-701.
https://doi.org/10.1016/j.dental.2014.03.007
Pongprueksa P, Miletić V, Janssens H, Van Landuyt KL, de Munck J, Godderis L, Van Meerbeek B. Degree of conversion and monomer elution of CQ/amine and TPO adhesives. in Dental Materials. 2014;30(6):695-701.
doi:10.1016/j.dental.2014.03.007 .
Pongprueksa, Pong, Miletić, Vesna, Janssens, Henriette, Van Landuyt, Kirsten L., de Munck, Jan, Godderis, Lode, Van Meerbeek, Bart, "Degree of conversion and monomer elution of CQ/amine and TPO adhesives" in Dental Materials, 30, no. 6 (2014):695-701,
https://doi.org/10.1016/j.dental.2014.03.007 . .
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