Preparation of void-free casts from vinyl polysiloxane impressions.
OBJECTIVE
To investigate two techniques to produce void-free casts from vinyl polysiloxane impressions.


METHODS
Thirty casts prepared using a conventional technique were compared with 30 casts prepared using a technique involving syringing of stone in terms of numbers of surface voids.


RESULTS
Significantly fewer surface voids were observed in the casts prepared using syringing technique.


CONCLUSIONS
The syringing technique investigated is considered to have advantages over the conventional technique for the production of casts from vinyl polysiloxane impressions.
Sherfudhin
H
H
Department of Restorative Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
Abdulla
M A
MA
D000388:Air; D002133:Calcium Sulfate / Q000737:chemistry; D003735:Dental Casting Technique / Q000295:instrumentation; D003760:Dental Impression Materials / Q000737:chemistry*; D003761:Dental Impression Technique / Q000295:instrumentation*; D008853:Microscopy; D003765:Models, Dental; D011145:Polyvinyls / Q000737:chemistry*; D012833:Siloxanes / Q000737:chemistry*; D013499:Surface Properties; D013594:Syringes; D014732:Vibration
D003760:Dental Impression Materials; D011145:Polyvinyls; D012833:Siloxanes; C034183:vinyl polysiloxane; D002133:Calcium Sulfate