Root Canal Configuration of Burmese (Myanmar) Maxillary First Molar: A Micro-Computed Tomography Study

Table 5

Number and position of canal foramina

Root	Canals/isthmus	Root thirds	Number of foramina (%)	Total number of foramina (%)
Mesiobuccal root	Mesiobuccal canal	Coronal	0 (0)	309 (49.60)
		Middle	1 (0.16)
		Apical	193 (30.98)
	Mesiobuccal 2 and additional canals	Coronal	0 (0)
		Middle	0 (0)
		Apical	99 (15.89)
	Isthmus	Coronal	0 (0)
		Middle	2 (0.32)
		Apical	14 (2.25)
Distobuccal root	Distobuccal canal and additional canal	Coronal	0 (0)	166 (26.64)
		Middle	0 (0)
		Apical	165 (26.48)
	Isthmus	Coronal	0 (0)
		Middle	0 (0)
		Apical	1 (0.16)
Palatal root	Palatal canal	Middle	1 (0.16)	148 (23.76)
		Apical	147 (23.60)
Total number of foramina (%)			623 (100)

Sixteen lateral canals occurred from the isthmuses of the mesiobuccal roots, and only one lateral canal occurred from the isthmus of the distobuccal root.