Table 2.

Distances from DL orifice to other 3 orifices in 25 permanent three-rooted right and left mandibular first molars.

Teeth	Distance (mm)
	DLO-DBO	DLO-MBO	DLO-MLO
# 36 (n = 10)	2.80 ± 0.41	4.18 ± 0.79	3.25 ± 0.52
# 46 (n = 15)	2.79 ± 0.27	4.28 ± 0.83	3.33 ± 0.53
Total (n = 25)	2.79 ± 0.34	4.23 ± 0.81	3.29 ± 0.52

Distolingual orifice (DLO); distobuccal orifice (DBO); mesiobuccal orifice (MBO); mesiolingual orifice (MLO).