Potential of «universal» bonding agents for composite repair

Figures & data

Table 1. Materials used in the experiments.

Materials used
Bonding name:	Manufacturer	Batch/LOT	Composition (according to manufacturer)	pH and classification
Optibond FL (control)	Kerr	6605713/Primer:-87/Adhesive:-82	Primer: HEMA, Water, Ethanol Adhesive: GPDM, HEMA, Sodium-hexa-fluoro-silicate. Barium-silicate	Not available
G-Premio Bond	GC	1710132	10-MDP, 4-MET, MDTP, Acetone	1.5 IS
All-Bond Universal	Bisco	180003174	10-MDP, 2-HEMA, BisGMA, Ethanol	3.2 UM
Adhese Universal	Ivoclar	x12305	10-MDP, 2-HEMA, Bis-GMA, other Methacrylates, Ethanol, water, highly dispersed silicon dioxide, initiators, stabilisators	2.8 UM
Optibond Universal	Kerr	6822676	GPDM, HEMA, Acetone, Ethyl Alcohol, Disodium Hexafluorosilicate	2.5 M-UM
Clearfil SE Universal Q	Kuraray	7L0040	10-MDP, Bis-GMA, 2-HEMA, Hydrophilic Amide Monomers, Colloidal Silica, Silane coupling agents, Sodium Fluoride, di-Camphoroquinone, Ethanol, Water	2.3 M
Prime&Bond Elect	Dentsply Sirona	1806000807	10-MDP, Bisacrylamide, Propan-2-ol, Bisacrylamide, Dipentaerythritol pentaacrylate phosphate, 4-(dimethylamino)benzonitrile	2.5 M-UM
One Coat	Coltene	172418	10-MDP, Ethanol, Urethane dimethacrylate, 2-HEMA	2.0–2.8 M-UM
iBond Universal	Kulzer	K010032	10-MDP, Acetone, 4-methacryloxyethyltrimellitic acid anhydride	1.6–1.8 IS
Scotchbond Universal	3M	80513B	10-MDP Monomer, HEMA, Dimethacrylate resins, Vitrebond Copolymer, Filler, Ethanol, Water, Initiators, Silane	2,7 UM
Composite:
Filtek Supreme XTE	3M	N946833

Figure 1. Bond strength of universal bonding agents and control, Optibond FL. (A) 2 weeks storage in water. (B) 1 year storage in water. Box represents the 25 and 75% percentile, solid, horizontal line represents the median, and the dot represents the mean value. Whiskers show minimum and maximum values. Asterisk (*) indicates statistical difference from control, Optibond FL, p < .01.

Table 2. Number of pre-test failures (PTF) after 2 weeks and after 1 year (n = 15).

Product	2 Weeks (A)	1 Year (B)	Total
Optibond FL (control)	0	3	3
G-Premio bond	4	3	7*
Allbond U	0	2	2
Adhese U	1	0	1
Optibond U	3	0	3
Clearfil SE U	0	0	0
Prime & bond	0	1	1
OneCoat	0	0	0
IBond	5	2	7*
Scotchbond U	0	0	0
Total	13	11	24

Asterisk (*) indicates a significantly higher proportion of PTFs when testing the total amount of failures against the control, Optibond FL.

Figure 2. Chemical structure of GPDM.

Figure 3. Chemical structure of 10-MDP.