Load transfer of posts and cores to roots through cements.
This study evaluated differences in load transfer when cast posts are fixed to roots with different cements. Cast posts and cores were cemented with 40 endodontically prepared teeth by using four different cement mediums. The load exerted on the root surface through the post was evaluated using a strain gauge. The increased flexure after cementation was statistically analyzed. In conclusion, there was load transfer from post to root structure when posts were cemented, but no difference was found between cementation mediums.
Leary
J M
JM
Department of Family Dentistry, University of Iowa, College of Dentistry, Iowa City.
Jensen
M E
ME
Sheth
J J
JJ
D002484:Cementation; D003188:Composite Resins; D003442:Crowns; D003738:Dental Cements; D003799:Dental Stress Analysis; D005976:Glutaral; D006801:Humans; D008277:Magnesium Oxide; D011076:Polycarboxylate Cement; D011109:Polymethacrylic Acids; D011176:Post and Core Technique; D019279:Resin Cements; D012390:Root Canal Therapy; D013314:Stress, Mechanical; D014092:Tooth Root / Q000502:physiology*; D015034:Zinc Oxide; D015036:Zinc Phosphate Cement
D003188:Composite Resins; D003738:Dental Cements; C061504:Flecks; D011076:Polycarboxylate Cement; D011109:Polymethacrylic Acids; D019279:Resin Cements; C061503:Comspan; D008277:Magnesium Oxide; D015036:Zinc Phosphate Cement; C040235:Ketac-cem; C044372:Gluma; D015034:Zinc Oxide; D005976:Glutaral