Periapical Lesions and Missed Canals in Endodontically Treated Teeth: A Cone-Beam Computed Tomographic Study of a Chinese Subpopulation

04 July 2023: Clinical Research

Jing Hao ^1BCDEG* , He Liu ^2ACDEF** , Ya Shen ^2DEF

DOI: 10.12659/MSM.940533

Med Sci Monit 2023; 29:e940533

Table 4 Associations between missed canals and the incidence of periapical lesions in different roots of maxillary first molars.

Tooth number#	Root	n	Periapical lesions		Missed canals		Roots with missed canals		Roots without missed canals		Odds ratio (95% CI)**	P value
Tooth number#	Root	n	With	Without	With	Without	With lesions	Without lesions	With lesions	Without lesions	Odds ratio (95% CI)**	P value
16/26	MB^***	172	106	66	109	63	90	19	16	47	13.91 (6.590–28.50)	< 0.0001^*
	DB	172	61	111	17	155	11	6	50	105	3.850 (1.297–10.99)	0.0140^##
	P	172	70	102	1	171	1	0	68	103	Infinity (0.1659-infinity)	0.4012^##
^# International numbering system; ^## Fisher’s exact test; ^* Chi-square test; ^ probability of a tooth with a missed canal to be associated with periapical lesion; ^* there were one or two missed canals (MB and/or MB2 canals) in a single MB root. Therefore, the MB data presented in this table represents the combined values of both the MB and MB2 canals, as described in . CI – confidence interval; DB – distobuccal; MB – mesiobuccal; n – number; P – palatal.