title: Accuracy and dimensional stability of four interocclusal recording materials.
abstract: Four materials, zinc oxide-eugenol paste, eugenol-free-zinc oxide paste, a silicone, and polyether jaw relations registration material were studied in a controlled laboratory environment to determine their accuracy and stability in intervals over a 1-week period. The results are as follows: 1. The eugenol-free zinc-oxide paste was the only material which exhibited no statistically significant difference between the die scribes and those of the sample. 2. The setting reaction of the eugenol-free-zinc oxide paste was a saponification reaction, resulting in the production of an insoluble soap. 3. With polyether, silicone, and zinc oxide-eugenol paste, there was a statistical difference between the die and the respective samples at the immediate reading and throughout the experiment. Polyether showed the least difference, and zinc oxide-eugenol paste the greatest.
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003760:Dental Impression Materials; D007574:Jaw Relation Record; D009824:Ointments; D012828:Silicones; D013499:Surface Properties; D013997:Time Factors; D015034:Zinc Oxide; D015035:Zinc Oxide-Eugenol Cement
chemical_list: D003760:Dental Impression Materials; D009824:Ointments; D012828:Silicones; D015035:Zinc Oxide-Eugenol Cement; D015034:Zinc Oxide