Preparation of void-free casts from vinyl polysiloxane impressions

Purpose: To investigate two techniques to produce void-free casts from vinyl polysiloxane impressions. Materials and 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. Conclusion: The syringing technique investigated is considered to have advantages over the conventional technique for the production of casts from vinyl polysiloxane impressions