Evaluating the efficacy of endodontic microsurgery for teeth with an undeveloped root apex and periapical periodontitis after nonsurgical treatment failure

Table 1 Comparison of success rates between the groups

		Number of successful cases	Number of surgical failures	Total	Success rate
Age (years)	< 16	63	2	65	0.969
	> 16	14	1	15	0.933
Sex	Men	42	2	44	0.955
	Women	35	1	36	0.972
Sinus tract	Yes	54	2	56	0.964
	No	23	1	24	0.958
Teeth position	Mandibular first premolar	15	1	16	0.938
	Mandibular second premolar	62	2	64	0.969
Extent of periapical lesion	< 1 cm²	61	2	63	0.968
	> 1 cm²	16	1	17	0.941

ISSN: 1472-6831