Table 1.
a. Chemical structures and experimental parameters for the polymerized dentin adhesives in group 1 (the mean values ±the standard deviation of at least three replicates are shown). | ||||
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Group 1 | ||||
Chemical Name | Ethylene glycol dimethacrylate | Diethylene glycol dimethacrylate | Triethylene glycol dimethacrylate | Tetraethylene glycol dimethacrylate |
Abbreviation | EGDMA | DEGDMA | TEGDMA | T4EGDMA |
Degree of Conversion (%) | 88.0±0.0 | 92.5 ±0.8 | 92.7±0.6 | 92.5±0.8 |
Sorption (%) | 7.4±0.17 | 8.59±0.09 | 9.03±0.3 | 12.2±0.98 |
Solubility (%) | 1.8±0.34 | 0.9±0.21 | 0.6±0.17 | 3.53±0.95 |
Rubbery Modulus (× 10 MPa) | 108±8.06 | 38.8±3.21 | 35.3±5.77 | 38.5±6.82 |
Glass transition temperature (°C) | 130.7±7.7 | 152.8±0.7 | 141.1±1.1 | 131.2±2.6 |
Crosslink Density (molm−3) | 10719.3±205.6 | 3660±319 | 3420±587 | 3820±753 |
Partition Coefficient | 0.09±0.0022 | 0.107±0.0012 | 0.109±0.0091 | 0.146±0.0 |
Density (g/cm3) | 1.238±0.01 | 1.242±0.01 | 1.204±0.05 | 1.232±0.01 |
Leachable Density (× 10−2 g/cm3) | 2.23±0.44 | 1.12±0.27 | 0.72±0.23 | 4.36±1.21 |
Log P (mol avg.) | 1.295 | 1.243 | 1.203 | 1.175 |
D of water (× 10−8 cm2/sec) | 1.36 | 1.891 | 2.16 | 3.148 |
D of leachable (× 10−9 cm2/sec) | 2.184 | 3.162 | 1.733 | 3.526 |
b. Chemical structures and experimental parameters for the polymerized dentin adhesives in group 2 (the mean values ±the standard deviation of at least three replicates are shown). | |||||
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Group 2 | |||||
Chemical Name | 1,6-hexanediol dimethacrylate | Neopentyl glycol dimethacrylate | 1,4-butanediol dimethacrylate | 1,3-butanediol dimethacrylate | Ethylene glycol dimethacrylate |
Abbreviation | 1,6-HDMA | NGDMA | 1,4-BDMA | 1,3-BDMA | EGDMA |
Degree of Conversion (%) | 91.5±0.9 | 88.5±3.0 | 91.7±0.4 | 89.6±0.1 | 88.2±0.5 |
Sorption (%) | 9.25±0.48 | 9.95±0.98 | 6.9±0.15 | 7.2±0.04 | 7.40±0.17 |
Solubility (%) | 2.66±0.27 | 2.75±0.75 | 0.80±0.26 | 0.9±0.05 | 1.80±0.34 |
Rubbery Modulus (× 10 MPa) | 56.9±9.9 | 54.9±7.93 | 81.8±5.69 | 154.0±2.57 | 108±8.06 |
Glass transition temperature (°C) | 150.0±4.8 | 168.3±2.0 | 147.8±4.3 | 153.7±2.6 | 130.7±7.7 |
Crosslink Density (molm−3) | 5400±111 | 4990±779 | 7790±771 | 18500±1840 | 10800±1440 |
Partition Coefficient | 0.112±0.00 | 0.107±0.0045 | 0.084±0.0018 | 0.088±0.00 | 0.09±0.0022 |
Density (g/cm3) | 1.208±0.01 | 1.208±0.02 | 1.221±0.01 | 1.222±0.00 | 1.238±0.01 |
Leachable Density (× 10−2 g/cm3) | 3.21±0.35 | 3.32±0.97 | 0.98±0.33 | 1.10±0.06 | 2.23±0.44 |
Log P (mol avg.) | 1.543 | 1.524 | 1.4 | 1.372 | 1.295 |
D of water (× 10−8 cm2/sec) | 1.721 | 1.497 | 1.358 | 1.406 | 1.36 |
D of leachable (× 10−9 cm2/sec) | 7.456 | 4.634 | 7.931 | 1.026 | 2.184 |
c. Chemical structures and experimental parameters for the polymerized dentin adhesives from formulations other than groups 1 and 2 (the mean values ± the standard deviation of at least three replicates are shown). | ||||||||
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Other monomers |
||||||||
Chemical Name |
Pentaerythritol imethacrylate |
Trimethylolpropane trimethacrylate |
Pentaerythritol trimethacrylate |
1,3-glycerol dimethacrylate |
Glyceryl trimethacrylate |
Bisphenol A ethoxylate dimethacrylate |
Diurethane dimethacrylate |
Bisphenol A- glycerolate dimethacrylate |
Abbreviation | PEDMA | TMTMA | PETMA | GDMA | GTMA | BisEMA | UDMA | BisGMA |
Degree of Conversion (%) | 88.4±0.9 | 85.9±1.9 | 84.0±1.5 | 89.6±0.4 | 84.2±1.6 | 93.4±0.4 | 92.8±0.3 | 88.0±0.0 |
Sorption (%) | 9.25±0.09 | 6.93±0.26 | 10.2±0.44 | 9.89±0.53 | 6.74±0.09 | 7.51±0.2 | 7.61±0.2 | 7.5±0.12 |
Solubility (%) | 2.88±0.45 | 2.00±0.05 | 4.82±0.96 | 1.10±0.27 | 1.00±0.14 | 1.10±0.26 | 0±0.16 | 0.3±0.02 |
Rubbery Modulus (× 10 MPa) | 55.3±5.68 | 186±25.4 | 122±18.4 | 69.8±9.57 | 38.8±3.21 | 18.9±1.75 | 22.6±2.53 | 24.1±3.14 |
Glass transition temperature (°C) | 154.7±8.2 | 156±2.6 | 155.2±4.1 | 166.0±1.2 | 164.2±3.3 | 111.1±1.9 | 130.6±0.8 | 142.0±1.8 |
Crosslink Density (molm−3) | 5190±807 | 17400±266 | 11400±2050 | 6830±923 | 26400±190 | 1980±216 | 2250±264 | 2330±333 |
Partition Coefficient | 0.102±0.0019 | 0.087±0.0013 | 0.113±0.0115 | 0.124±0.0015 | 0.085±0.0019 | 0.092±0.0028 | 0.092±0.0025 | 0.105±0.0037 |
Density (g/cm3) | 1.204±0.01 | 1.236±0.01 | 1.227±0.06 | 1.257±0.01 | 1.259±0.01 | 1.224±0.2 | 1.215±0.01 | 1.206±0.02 |
Leachable Density (× 10−2 g/cm3) | 3.47±0.57 | 2.47±0.07 | 5.91±1.44 | 1.38±0.34 | 1.26±0.19 | 1.35±0.33 | 0.00±0.00 | 0.36±0.02 |
Log P (mol avg.) | 1.067 | 1.529 | 1.276 | 1.166 | 1.373 | 1.767 | 1.800 | 1.738 |
D of water (× 10−8 cm2/sec) | 1.532 | 1.060 | 2.542 | 2.382 | 1.172 | 1.563 | 1.334 | 1.882 |
D of leachable (× 10−9 cm2/sec) | 4.445 | 3.048 | 7.33 | 22.13 | 1.769 | 0.6412 | 2.003 | 0.7882 |