OBJECTIVES The preparation of the root canal involves a probing phase, a general shaping phase and an apical finishing phase in which the clinician must prepare the last apical millimeters. The aim of this clinical case is to describe a protocol to instrument the apical third to a more anatomically correct diameter according to the obturation technique. MATERIALS AND METHODS Endodontic retreatment was performed on a patient who presented a chronic apical periodontitis. The protocol provided the reshaping of the canals, following a sequence for the apical finishing that included NiTi instruments with increasing diameter at the tip but with reduced taper. The preparation ended when the white dentine was present at the tip of the instrument. The recalls were performed at 6, 12 and 48 months. RESULTS AND CONCLUSIONS The third apical of the root canal is the most difficult region to treat. The correct preparation of the apex increases the success rates of the long-term endodontic treatment. Larger preparations of the apical portion, allows, first of all, a better disinfection of the canal and secondly a greater contact between the root surfaces and the rotating instrument and therefore a better removal of infected dentin, bacteria and debris. It is desirable that modern endodontics provides for the achievement of anatomically guided apical diameters suitable to obtain an adeguate disinfection and a three-dimensional apical seal.
The apical endodontic finishing
Malagnino V. A.Penultimo
;
2018-01-01
Abstract
OBJECTIVES The preparation of the root canal involves a probing phase, a general shaping phase and an apical finishing phase in which the clinician must prepare the last apical millimeters. The aim of this clinical case is to describe a protocol to instrument the apical third to a more anatomically correct diameter according to the obturation technique. MATERIALS AND METHODS Endodontic retreatment was performed on a patient who presented a chronic apical periodontitis. The protocol provided the reshaping of the canals, following a sequence for the apical finishing that included NiTi instruments with increasing diameter at the tip but with reduced taper. The preparation ended when the white dentine was present at the tip of the instrument. The recalls were performed at 6, 12 and 48 months. RESULTS AND CONCLUSIONS The third apical of the root canal is the most difficult region to treat. The correct preparation of the apex increases the success rates of the long-term endodontic treatment. Larger preparations of the apical portion, allows, first of all, a better disinfection of the canal and secondly a greater contact between the root surfaces and the rotating instrument and therefore a better removal of infected dentin, bacteria and debris. It is desirable that modern endodontics provides for the achievement of anatomically guided apical diameters suitable to obtain an adeguate disinfection and a three-dimensional apical seal.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
