In vitro effect of beer, red and white wine on the morphology and surface roughness of human enamel.

Background: Beer, red and white wine are acidic drinks whose frequent consumption can increase the risk of dental erosion.

Objectives: To establish the effect of beer, red and white wine on the morphology and surface roughness (SR) of human enamel using different exposure times in a cyclic deand remineralization model in vitro.

Material And Methods: The experiment included 33 surgically extracted impacted human third molars from patients aged 18-25 years.

[Dynamic forces of Mitkovic self-dinamysible trochanteric Internal fixators (SIF)].

Dynamic trochanteric fractures implants allow fracture fragments to be compressed. Dynamisation can be realized if the axial pin force overcome friction force between pin and body of the implant. Examination of sliding iniciation forces in Mitkovic Selfdinamysible Trochanteric Internal Fixator (SIF).