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Table 1 Coronal restoration quality and root canal filling quality scored on endodontically treated teeth

From: Prevalence and risk factors of Apical periodontitis in endodontically treated teeth: cross-sectional study in an Adult Moroccan subpopulation

Variables

Score

Clinical and radiographic quality of coronal restorations

0: Anatomical restoration with no open margins, no overhangs, and no recurrent decay (Adequate)

1: Restoration with overhangs (Inadequate)

2: Restoration with open margin (Inadequate)

3: Restoration with unsatisfactory anatomic form (Inadequate)

4: Restoration with recurrent decay (Inadequate)

5: Fractured, detached, or lost restoration (Inadequate)

6: tooth cusp or tooth wall fracture (Inadequate)

Radiographic quality of root canal filling

Length of the root filling

0: root filling ending from 0 to 2 mm short of the radiographic apex (adequate)

1: root filling ending more than 2 mm short of the radiographic apex, unfilled canals, detectable void between the intra-radicular post and the filling material (inadequate)

2: filling extruded beyond the apex (inadequate)

Homogeneity of the root filling

0: root canal filling with good radiographic density, no detectable voids between filling material and root canal walls (adequate)

1: root canal filling with low radiographic density, detectable voids (inadequate)

Conicity of root canal filling

0: continuously tapering funneled preparation from the canal orifice to the apex, and cross-sectional diameter narrower at every point apically (adequate)

1: inconsistant taper from the coronal to the apical part of the filling, or root filling deviated from the original canal (inadequate)