[Study of the film thickness of dental composite resins after preheating].

Purpose: To compare film thickness of adhesive resin cement and dental composite resins after they are preheated with hot air.

Material And Methods: The film thickness was measured using adhesive resin cement Variolink esthetic (Ivoclar-Vivadent, Liechtenstein), micro-hybrid composite Enamel (Micerium, Germany) and nanofilled composite Estelite sigma quick (Tokuyama Dental, Japan) at different temperatures.

Results: The film thickness of the Variolink esthetic at room temperature was 23 μm, and the dental composites after preheating them with hot air and applying adhesive on both surfaces to be joined produced the following results: Estelite 62 μm and Enamel 25 μm.

Conclusion: As a result of the study, it was found that the proposed method allows one to achieve a film thickness for high-viscosity composites comparable to the film thickness of composite cements.