Accession Number : AD0687080

Title :   A CLINICAL COMPARISON OF FOUR POSTERIOR INTERMEDIATE RESTORATIVE MATERIALS.

Descriptive Note : Technical rept. Apr 66-Nov 67,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Jendresen,Malcolm D. ; Phillips,Ralph W.

Report Date : DEC 1968

Pagination or Media Count : 14

Abstract : The ability of four zinc oxide - eugenol formulations to serve as long-term intermediate restorative materials was investigated. The materials were: (1) zinc oxide - eugenol, (2) zinc oxide - eugenol + EBA, (3) a reinforced zinc oxide - eugenol, and (4) a reinforced zinc oxide - eugenol prepared from surface-treated zinc oxide particles. A laboratory comparison of these materials was made in AD-686 730. Over 200 restorations were placed using the four materials in equal distribution. Every 60 days for 12 months, the restorations were evaluated on the basis of maintenance of anatomic form and marginal integrity. The anatomic form and marginal integrity were recorded by means of stone casts obtained from impressions. Analysis of the 12 months of data indicated that materials 3 and 4 were significantly more durable than materials 1 and 2. For Class II restorations, material 4 was better than material 3 (P < .05) for anatomic form and marginal integrity. (Author)

Descriptors :   (*ADHESIVES, DENTISTRY), (*ZINC COMPOUNDS, ADHESIVES), (*PHENOLS, ADHESIVES), OXIDES, BENZOIC ACIDS, COMPRESSIVE PROPERTIES, HARDNESS, SOLUBILITY, TEETH, STRENGTH(PHYSIOLOGY)

Subject Categories : Medicine and Medical Research
      Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE