Date of Award


Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)



First Advisor

Dhuru, Virendra B.

Second Advisor

Fournelle, Raymond

Third Advisor

Toth, Jeffrey M.


The compressive creep and recovery of five dentin adhesive resins. (All-Bond 2, Amalgambond Plus. ProBOND. Pertac Universal Bond. Scotchbond 2) chosen from commercial dentin bonding systems were examined in this study. Cylindrical specimens. 8.0 ± 0.1 mm in height and 8.0 ± 0.1 mm in diameter, were stored in air at 21 ± 1°C for 24 hours before testing. A constant uniaxial compressive stress of 20 MPa was applied on samples for l hour and creep was recorded. After the load was removed, the recovery was recorded during the following two hours. The mean instantaneous deformation values for the five materials ranged from 142 to 347 microns; creep values ranged from 133 to 1316 microns; instantaneous recovery ranged from 123 to 347 microns, and delayed recovery values ranged from 71 to 530 microns. Permanent deformation values ranged from 61 to l052 microns (24% to 70%) were also noted for the five materials. Amalgambond Plus exhibited the greatest creep compliance (9.38 x 10·3 m2/MN), and Scotchbond 2 showed the least value (1.59 x 10-3 m2/MN). Linear regression coefficients were also obtained between the log creep compliance and the log time for five materials. The values of B (slope) ranged from 0.11 for Scotchbond 2 to 0.33 for Amalgambond Plus. The creep values of dentin bonding resins appeared to be within the range of those for denture base polymers but greater than those for dental composite resins.



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