Table 1 Definition of procedural endodontic terminology used in our study
Term | Definition |
|---|---|
Master GP cone | The largest gutta-percha cone that can be placed either to full working length or to within a short distance of working length (0.5 mm or less), of the completely prepared root canal prior to obturation [20]. |
Tug-back | Slight frictional resistance of a master point to withdrawal when seated; indicates a relative degree of adaptation, at least in two dimensions [20]. • Assessed by pulling the cone and feeling resistance to the displacement in the coronal direction. |
Apical stop | The matrix of dentin or other materials at the apical end of a root canal preparation that prevents further advancement or progression of both endodontic instruments and obturation materials [20]. • Assessed by pushing the cone and feeling resistance to the extrusion in the apical direction. |
Reference point | The point on the occlusal or incisal tooth surface from which measurements are made |
Ill-fitting cone | Either short (more than 2 mm from the apical foramen) or over-extended (extends beyond the apical foramen) |
Master apical cone radiograph | Radiograph taken to confirm the length of the selected cone |
Final radiograph | Radiograph taken postoperatively to evaluate the quality of the obturation |