Table 3.

Comparison of measurements made in central position on conventional and CBCT posteroanterior cephalograms separately for each landmark (in mm)

Position	Central PAC	Central PAC/CBCT	p-value	Central PAC	Central PAC/CBCT	p-value
Side	R	R		L	L
PAC	Mean ± SD	Mean ± SD		Mean ± SD	Mean ± SD
AG	39.46 ± 4.87	41.30 ± 4.87	0.008	41.72 ± 3.74	40.25 ± 3.63	0.127
J	28.24 ± 2.58	30.10 ± 2.31	0.030	28.98 ± 3.11	28.96 ± 2.35	0.985
ZA	53.65 ± 1.74	54.21 ± 1.46	0.084	54.52 ± 1.68	53.27 ± 1.45	0.104
NC	11.12 ± 1.51	10.89 ± 1.25	0.582	12.84 ± 2.29	11.04 ± 1.30	0.014
ZF	50.22 ± 1.11	50.43 ± 0.40	0.500	49.91 ± 1.04	49.84 ± 0.46	0.807
CO	52.57 ± 2.98	54.22 ± 3.39	0.241	54.25 ± 4.19	53.17 ± 3.04	0.407

AG, antegonion; CO, condylion; J, jugale; L, left; NC, nasal cavity; PAC, posterior anterior cephalomety; PAC/CBCT, the posterior anterior cephalograms were obtained from CBCT images; R, right; SD, standard deviation; ZA, zygomatic arch; ZF, zygomaticofrontal suture.

The values given in bold are statistically significant.