Influence of zinc-oxide eugenol, formocresol, and ferric sulfate on bond strength of dentin adhesives to primary teeth.
This study evaluated in vitro the influence of a temporary filling {zinc oxide-eugenol (ZOE)} and two pulpotomy agents {formocresol (FC) and ferric sulfate (FS)} on shear bond strength (SBS) of two dentin adhesives to the dentin of primary molars. A total of 80 dentin surfaces were prepared and randomly allocated into 10 groups of 8 specimens each. Groups were subjected to different treatments, which included covering with a paste of ZOE mixed at different powder:liquid (P:L) ratios, placement on a gauze soaked in FC or FS, or they received no pretreatment and served as a control. XRV Herculite composite cylinders were bonded to dentin surfaces using Prime and Bond NT adhesive resin or Opti Bond Solo Plus adhesive resin. SBSs were determined using the lnstron testing machine running at a crosshead speed of 0.5 mm/min. The use of ZOE mixed at the lower P:L ratio of 10g:2g significantly decreased the values of SBS of the two adhesives. The use of two pulpotomy agents (FC and FS) significantly decreased the SBS of the two adhesives. The bond strength to dentin of primary teeth was influenced by the pulpotomy agents used and the ZOE P:L ratio but not by the adhesive system used.
Salama
Fouad Saad
FS
Department of Growth and Development, University of Nebraska Medical Center, College of Dentistry in Omaha, NE, USA. fsalama@unmc.edu
D001840:Dental Bonding; D003794:Dental Restoration, Temporary; D003799:Dental Stress Analysis; D003804:Dentin; D017220:Dentin-Bonding Agents; D005290:Ferric Compounds; D005566:Formocresols; D006801:Humans; D008422:Materials Testing; D008963:Molar; D011109:Polymethacrylic Acids; D011672:Pulpotomy; D011897:Random Allocation; D019279:Resin Cements; D033081:Shear Strength; D014094:Tooth, Deciduous; D015035:Zinc Oxide-Eugenol Cement
D017220:Dentin-Bonding Agents; D005290:Ferric Compounds; D005566:Formocresols; C451600:OptiBond Solo Plus; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D019279:Resin Cements; D015035:Zinc Oxide-Eugenol Cement; C031025:formocresol; C024823:ferric sulfate