Journal of Dental Research, Vol 67, 582-584, Copyright © 1988 by International & American Associations for Dental Research Online Journals
An in vitro evaluation of artificial caries-like lesions on restored overdenture abutments
P. P. Kambhu, R. L. Ettinger and J. S. Wefel
Department of Preventive and Community Dentistry, University of Iowa, Iowa City 52242.
An acidified dialyzed gelatin gel system was used to determine the caries
resistance of a variety of restorative materials used to obturate the canal
orifice of overdenture abutment teeth. The restorative materials used were
Tytin, Tytin + Copalite, P30 + Scotchbond, Fuji Ionomer-Type II, and
Miracle Mix. Polarized light microscopy and microradiography were used to
examine the caries-like lesions adjacent to the restorations. The lesions
formed in the Fuji Ionomer-Type II and Miracle Mix groups appeared arrested
at the wall adjacent to the restoration, and did not penetrate apically
down the wall as did those associated with the other restorative materials.
The mean depths of lesions adjacent to Fuji Ionomer-Type II and Miracle Mix
restorations were significantly less than those of Tytin, Tytin + Copalite,
or P30 + Scotchbond.
