Dimensional Accuracy of Stone Casts Obtained with Multiple Pours into the Same Mold

Table 1

Mean values, standard deviation, and significant test (𝑃) of the difference dimension of stone casts from master cast (μm).

Measurement	First pour		Second pour		Third pour		𝑃 value
	Mean	Standard deviation	Mean	Standard deviation	Mean	Standard deviation
Lower diameter (abutment 1)	21.29	18.40	19.71	15.60	19.41	16.90	0.9315
Upper diameter (abutment 1)	9.42	8.47	10.59	5.67	10.72	9.37	0.6076
Height (abutment 1)	5.02	3.28	10.85	5.71	32.08	14.55	<0.0001
Lower diameter (abutment 2)	32.85	23.16	31.29	21.38	31.04	24.61	0.9513
Upper diameter (abutment 2)	12.75	11.18	13.08	7.50	12.27	11.59	0.9495
Height (abutment 2)	20.68	18.11	17.95	14.35	25.55	13.64	0.03634
Lower distance interabutment	19.30	13.25	24.16	12.86	24.66	13.47	0.5561
Upper distance interabutment	16.23	6.49	23.99	6.71	27.77	7.07	0.001