Dental restoration operative time and analysis of the internal gap of conventional resins (Incremental Technique) vs. Bulk Fill (Single-Increment Technique): In vitro study.

Background: To determine the operative time and the internal restoration gap in the restoration-tooth interface in the cavity floor using an incremental technique for conventional resins and the single-increment technique for the bulk fill resin. Material and Methods: In this in vitro experimental study, the internal gaps of the restoration-tooth interfaces in the cavity floors of two conventional resins and two bulk fill resins were microscopically analyzed, and the restoration times of the single-increment technique and the incremental technique were determined. Results: Bulk fill resins had smaller internal gap (63.31 µm) than conventional resins (333.14 µm). Regarding the restoration time, the single-increment technique obtained the best results in operative time (3.52 minutes), with significant differences relative to the incremental technique. Conclusions: The Tetric N-Ceram bulk fill resin presented better performance than conventional resins relative to the internal gap of the restoration-tooth interface in the cavity floor. In addition, the single-increment technique presented a short clinical restoration time. Key words:Composite, internal gap, restoration technique.

Sindrome del anillo congénito: a propósito de un caso / Congenital bands syndrome: case report

Expone que el síndrome de anillo congénito es una patología deformante que involucra los miembros produciendo diferentes grados de limitación funcional en los mismos. La etiología es desconocida. Presentamos el caso de un paciente varón de 7 meses de edad, quien presentó un acortamiento y edema localizado distalmente a una banda de naturaleza congénita en su brazo izquierdo. Nuestro interés es poder determinar factores predisponentes a esta patología y determinar la mejor terapéutica a seguir.