A Comparison of Two Tests to Determine the Castability of Dental Alloys

reportActive / Technical Report | Accession Number: ADA219660 | Open PDF

Abstract:

This study compared castability values Cv in the Whitlock test with Cv obtained from a new castability monitor based on a dental restoration. Five metal ceramic casting alloys were induction cast with both a carbon-containing and a noncarbon phosphate-bonded casting investment to assess the reliability of the Whitlock mesh test in predicting alloy castability. Alloy performance in the Whitlock test did not parallel that of the replica coping test for all alloy- investment pairs as would be anticipated for a reliable castability monitor. In addition, the variability of the Whitlock castability values for some alloys was sufficient to question its usefulness for fine-tuning the casting process with a specific alloy. aw

Author(s):
Naylor, W. P. ; Moore, B. K. ; Phillips, Ralph W. ; Goodacre, Charles J. ; Munoz, Carlos A.
Author Organization(s):
SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX
Descriptive Note:
Rept. for Sep 1986-Mar 1988,
Pagination:
0036

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
USAFSAM-JA-89-60
Task Number(s):
TR
Project Number(s):
NGDA
Monitor Series:
USAFSAM
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_1_Force Support; JCA_5.3_Planning; JCA_1.2.5_Lessons Learned; JCA_1.2_Force Preparation; JCA_1.3_Human Capital Management; JCA_6.4.1_Secure Information Exchange; JCA_6_Net Centric; JCA_1.3.2_Personnel Management
Communities of Interest:
Human Systems
Descriptor(s):
*MEDICAL SUPPLIES, *CASTING ALLOYS, *DENTAL EQUIPMENT, *CERAMIC MATERIALS, DENTISTRY, INVESTMENT CASTING, RELIABILITY, MESH, COMPARISON, TEST AND EVALUATION, METAL COMPOUNDS
Field(s)/Group(s):
Medical Facilities, Equipment and Supplies, Ceramics, Refractories and Glass, Properties of Metals and Alloys, Fabrication Metallurgy
Keyword(s):
*CASTABILITY, *DENTAL ALLOYS, DENTAL MATERIALS, PE87714F, WUUSAFSAMNGDATRPR
Report Date:
1989 Nov 01