Stabilitas Dimensi dan Setting Time Bahan Cetak Anatomis Kedokteran Gigi Dari Ekstrak Natrium Alginat Rumput Laut Merah (Kappaphycus alvarezii) Dari Desa Agel, Kecamatan Jangkar, Situbondo

Alginate impression material is important in dentistry. In its clinical application, setting time still considered too fast, and the alginate must have dimensional stability accordance with ANSI / ADA standard specification no.18. has a main component, namely sodium which produced from seaweed extraction process. Indonesia, there are several types of seaweed, one Kappaphycus alvarezii (K. alvarezii). The village Agel Situbondo potential to be source antibacterial antioxidant effects. aim this study analyze printing extract kappaphycus seaweed. was conducted using laboratory experimental methods post-test only control group design, were 2 groups, commercial group, treatment acid method, then FTIR test carried out. Then two groups tested for stability. results red showed an absorption peak that identical alginate. significantly took longer than while same results. Conclusion: had both according standard. already