Cone-Beam Computed Tomography Assessment of Quality of Endodontic Treatment and Prevalence of Procedural Errors in Mandibular Molars

Table 1

Frequency of underfilling, overfilling, and voids in different canals of endodontically treated mandibular molars.

Procedural error	Canal type	Frequency	Percentage (%)
Underfilling	Distal	41	36.0
	Distobuccal	13	11.4
	Distolingual	14	12.3
	Mesial	5	3.5
	Mesiobuccal	78	68.4
	Mesiolingual	74	64.9
Overfilling	Distal	31	56.4
	Mesial	4	7.3
	Mesiobuccal	21	38.2
	Mesiolingual	22	40.0
Voids	Distal	12	25.5
	Distobuccal	2	4.3
	Distolingual	4	8.5
	Mesial	2	4.3
	Mesiobuccal	20	42.6
	Mesiolingual	27	57.4