Prognostic validity of the Periapical and Endodontic Status Scale for the radiographically assessed 2-year treatment outcomes in teeth with apical periodontitis: a prospective clinical study

Table 3 Distribution of root canals (n = 403), with respect to transitions of the investigated parameters (S, R, and D) and treatment outcome

Diagnostic parameters	Positive treatment outcome, n			Negative treatment outcome, n
Diagnostic parameters	Changed to better	Remained unchanged	Total	Changed to worse	Remained unchanged	Total
Periapical lesion size, (S)	80	299	379	15	9	24
Periapical lesion relation with root, (R)	69	285	354	19	30	49
Periapical lesion location, (D)	67	319	386	15	2	17
Total*			350			53

^* “Total” denotes the transitions of the periapical status of the root canals based on all three parameters (S, R, and D), using the highest severity score to determine the treatment outcome. n, number of root canals

ISSN: 1472-6831