Schedule 0 [EP-8] Flexural Strength of Polymethyl Methacrylate Provisional Crown and Bridge Materials Fabricated by Mixing and Machining *CHAKREE ONGTHIEMSAK1, Chanya Chuenarrom1, Kittiwara Pupong1, Tanapat Jearanai1, Manassanun Jearborwornnun1, Nareerat Srihirundeth1, Ornicha Dilokrattanaphichit1 (1. Prince of Songkla University)