Intracoronal pressure during crown cementation.
A model system was developed which recorded the intracoronal pressure during crown cementation at three locations simultaneously. Peak pressures and residual pressures were greatest with zinc phosphate cement. The zinc oxide-eugenol cement generated the smallest amount of peak and residual pressures. The polycarboxylate cement exhibited an intermediate pressure intensity. The uneven intracoronal pressure in the cement suggests a complex flow pattern capable of developing the separation of phases that earlier work reported. However, the small residual pressure indicates that these internal back pressures appear to play a limited role in preventing a complete seating of a crown.
D002484:Cementation; D003442:Crowns; D006047:Gold Alloys; D006801:Humans; D008954:Models, Biological; D011076:Polycarboxylate Cement; D011312:Pressure; D014070:Tooth / Q000502:physiology*; D015035:Zinc Oxide-Eugenol Cement; D015036:Zinc Phosphate Cement
D006047:Gold Alloys; D011076:Polycarboxylate Cement; D015035:Zinc Oxide-Eugenol Cement; D015036:Zinc Phosphate Cement