The analysis of accelerator concentration effect on setting time and morphology surface impression materials made of brown algae Sargassum sp

Objective: To analyze the accelerator concentration on alginate impression material setting time made of brown algae Sargassum sp. Method: This study was an experimental laboratory using samples of impression material made of brown algae Sargassum sp. Measurement of setting time using stopwatch and morphological surface analysis using Scanning Electron Magnetic (SEM). Result: The average setting time for the fastest calcium sulfate accelerator is 3.11 min (17 g) and the longest is 6.13 min (15 g). As for the fastest potassium titanium fluoride accelerator material the timeline setting is 3.81 min (4 g) and the longest is 5.73 min (2 g). SEM analysis showed that alginate printing impression materials with accelerator materials of calcium sulfate 17 g and potassium titanium fluoride 4 g showed the smaller, finer denser and more homogenous surface morphology. Conclusion: Impression material made of Sargassum sp. with accelerator calcium sulfate 17 g and potassium titanium fluoride 4 g has a better setting time and surface morphology.