This study was performed to observe the flow change of the inlay waxes at various temperatures. The flow of inlay waxes was tested according to the treatment conditions, for 10 minutes at 40$^{circ}C$, 41$^{circ}C$, 42$^{circ}C$, 43$^{circ}C$, 44$^{circ}C$, and 45$^{circ}C$ The flow of inlay waxes at various temperatures was measured with an electro dial gauge. The results were as fellows: 1. The flow change of the inlay waxes at various temperatures was shown to increase in the order of wax A, B, D, C. 2. Wax A was close to ADA specification with 3% flow at 40$^{circ}C$ and 71% flow at 45$^{circ}C$, but wax B and D did not reach up to ADA specification with 40% flow at 45$^{circ}C$. 3. Wax C came up with 3% flow at 40$^{circ}C$ and 7% flow at 45$^{circ}C$, and it revealed a very low flow change at 5$^{circ}C$.