Table 2: Reliability test of consistency for readings of investigator by using paired t-test (R1 indicates first measurement and R2 indicates second measurement).

Measurements	Mean Differences (mm)	Std. Error (mm)	95% CI		p value
			Lower	Upper
maxillary 3-3 R1 - maxillary 3-3 R2	-0.1316	0.10144	-0.33545	0.07225	0.201
mandibular 3-3 R1 - mandibular 3-3 R2	-0.1066	0.081093	-0.26956	0.056362	0.195
anterior ratio R1 - anterior ratio R2	-0.0102	0.006024	-0.02231	0.001905	0.097
maxillary 6-6 R1 – maxillary 6-6 R2	-0.1128	0.09691	-0.30755	0.08195	0.25
mandibular 6-6 R1 - mandibular 6-6 R2	-0.0294	0.09318	-0.21665	0.15785	0.754
overall ratio R1 - overall ratio R2	0.0738	0.05087	-0.02843	0.17603	0.153