Setting Time Evaluation of BTCP Cement Fabricated Using BTCP Powder Derived from Green Mussel Shells and NaHSO4 Solution Eddy, Rafhaela Johanna Halim, Dina Ratnasari, Tansza Putri, Dewi Liliany Margaretta
Universtas Trisakti
Abstract
Background: BTCP is a material that has biocompatible, bioresorbable, osteoconductive and similar structure to bone and tooth tissues. Therefore, BTCP material is commonly used in the medicine and dentistry and usually applied in form of granules, block, or cement. Fabrication of BTCP cement can be done by mixing BTCP powder and sodium hydrogen sulfate (NaHSO4) solution. Objective: To analyse the setting time of BTCP cement fabricated using BTCP powder and sodium hydrogen sulfate (NaHSO4) solution with 0.1M, 0.2M, 0.3M and 0.4M concentration. Method: Laboratory experimental research by dissolving BTCP powder made from a mixture of CaO and H3PO4 solution into NaHSO4 solution to produce BTCP cement. The setting time test was carried out on BTCP cement using the Vicat test. The results of the clarification time test are explained using statistical SPSS including the Shapiro-Wilk, Levene, Anova, and LSD. Results: The setting time of BTCP cement (seconds) was found to be 0.1M (390, SD:26.8), 0.2M (534, SD:44.1), 0.3M (690, SD:32.8) and 0.4M (882, SD:44.8). β--TCP powder experiences dissolution after being mixed with an acid solution, causing dicalcium phosphate to precipitate and resulting in precipitation. Conclusion: The higher the concentration of the NaHSO4 solution, the slower the hardening time of BTCP cement.
Keywords: Beta Tricalcium phosphate, setting time, dissolution precipitation
