title: Die-spacing technique by diffusion precipitation.
abstract: The present study has shown that it is possible by utilizing the principle of diffusion to precipitate on stone dies an adequate resin spacer of uniform and desirable thickness. Details and variables of the technique are described. The precipitation technique is simple and requires a minimum of time and equipment. This spacer technique opens up gateways for a new and improved casting technique cleared of most of the variables affecting the precision of the methods employed up till now. A new gypsum bonded investment for the new casting technique is being developed.
mesh_terms: D000096:Acetone; D001585:Benzoyl Peroxide; D011232:Chemical Precipitation; D003188:Composite Resins; D003735:Dental Casting Technique; D004058:Diffusion; D003765:Models, Dental; D012996:Solutions; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D012996:Solutions; D000096:Acetone; D001585:Benzoyl Peroxide