TY  - JOUR
AU  - Pongprueksa, Pong
AU  - Miletić, Vesna
AU  - de Munck, Jan
AU  - Brooks, Neil R.
AU  - Meersman, F.
AU  - Nies, E.
AU  - Van Meerbeek, Bart
AU  - Van Landuyt, Kirsten L.
PY  - 2014
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/1879
AB  - Objectives: The purpose of this study was to evaluate how evaporation affects the shelf life of a one-bottle universal adhesive. Methods: Three different versions of Scotchbond Universal (SBU, 3M ESPE, Seefeld, Germany) were prepared using a weight-loss technique. SBU0 was left open to the air until maximal weight loss was obtained, whereas SBU50 was left open until 50% of evaporation occurred. In contrast, SBU100 was kept closed and was assumed to contain the maximum concentration of all ingredients. The degree of conversion (DC) was determined by using Fourier transform infrared spectroscopy on different substrates (on dentin or glass plate and mixed with dentin powder); ultimate microtensile strength and microtensile bond strength to dentin were measured as well. Results: DC of the 100% solvent-containing adhesive (SBU100) was higher than that of the 50% (SBU50) and 0% (SBU0) solvent-containing adhesives for all substrates. DC of the adhesive applied onto glass and dehydrated dentin was higher than that applied onto dentin. Even though the ultimate microtensile strength of SBU0 was much higher than that of SBU50 and SBU100, its bond strength to dentin was significantly lower. Conclusions: Evaporation of adhesive ingredients may jeopardize the shelf life of a one-bottle universal system by reducing the degree of conversion and impairing bond strength. However, negative effects only became evident after more than 50% evaporation.
PB  - Operative Dentistry Inc, Indianapolis
T2  - Operative Dentistry
T1  - Effect of Evaporation on the Shelf Life of a Universal Adhesive
VL  - 39
IS  - 5
SP  - 500
EP  - 507
DO  - 10.2341/13-195
ER  - 

@article{
author = "Pongprueksa, Pong and Miletić, Vesna and de Munck, Jan and Brooks, Neil R. and Meersman, F. and Nies, E. and Van Meerbeek, Bart and Van Landuyt, Kirsten L.",
year = "2014",
abstract = "Objectives: The purpose of this study was to evaluate how evaporation affects the shelf life of a one-bottle universal adhesive. Methods: Three different versions of Scotchbond Universal (SBU, 3M ESPE, Seefeld, Germany) were prepared using a weight-loss technique. SBU0 was left open to the air until maximal weight loss was obtained, whereas SBU50 was left open until 50% of evaporation occurred. In contrast, SBU100 was kept closed and was assumed to contain the maximum concentration of all ingredients. The degree of conversion (DC) was determined by using Fourier transform infrared spectroscopy on different substrates (on dentin or glass plate and mixed with dentin powder); ultimate microtensile strength and microtensile bond strength to dentin were measured as well. Results: DC of the 100% solvent-containing adhesive (SBU100) was higher than that of the 50% (SBU50) and 0% (SBU0) solvent-containing adhesives for all substrates. DC of the adhesive applied onto glass and dehydrated dentin was higher than that applied onto dentin. Even though the ultimate microtensile strength of SBU0 was much higher than that of SBU50 and SBU100, its bond strength to dentin was significantly lower. Conclusions: Evaporation of adhesive ingredients may jeopardize the shelf life of a one-bottle universal system by reducing the degree of conversion and impairing bond strength. However, negative effects only became evident after more than 50% evaporation.",
publisher = "Operative Dentistry Inc, Indianapolis",
journal = "Operative Dentistry",
title = "Effect of Evaporation on the Shelf Life of a Universal Adhesive",
volume = "39",
number = "5",
pages = "500-507",
doi = "10.2341/13-195"
}

Pongprueksa, P., Miletić, V., de Munck, J., Brooks, N. R., Meersman, F., Nies, E., Van Meerbeek, B.,& Van Landuyt, K. L.. (2014). Effect of Evaporation on the Shelf Life of a Universal Adhesive. in Operative Dentistry
Operative Dentistry Inc, Indianapolis., 39(5), 500-507.
https://doi.org/10.2341/13-195

Pongprueksa P, Miletić V, de Munck J, Brooks NR, Meersman F, Nies E, Van Meerbeek B, Van Landuyt KL. Effect of Evaporation on the Shelf Life of a Universal Adhesive. in Operative Dentistry. 2014;39(5):500-507.
doi:10.2341/13-195 .

Pongprueksa, Pong, Miletić, Vesna, de Munck, Jan, Brooks, Neil R., Meersman, F., Nies, E., Van Meerbeek, Bart, Van Landuyt, Kirsten L., "Effect of Evaporation on the Shelf Life of a Universal Adhesive" in Operative Dentistry, 39, no. 5 (2014):500-507,
https://doi.org/10.2341/13-195 . .

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 . .