Microabrasion of cast metal margins--a warning.
Plastic test patterns were milled to simulate casting margins and were cast in a variety of dental alloys. The cast specimens were exposed to horizontal and vertical streams of low-pressure microabrasion with 50 microm aluminum oxide particles. Post-exposure measurements show all specimens were affected by microabrasion. Dentists and laboratory technicians who use microabrasion must be aware of the potential damage to casting margins.
Mansueto
Michael A
MA
Department of Prosthodontics, University of Texas Health Science Center, San Antonio, TX 78229-3900, USA. mansueto@uthscsa.edu
Verrett
Ronald G
RG
Phoenix
Rodney D
RD
D020906:Air Abrasion, Dental / Q000009:adverse effects*; D003722:Dental Alloys / Q000737:chemistry*; D018772:Dental Marginal Adaptation; D008422:Materials Testing / Q000379:methods
D003722:Dental Alloys