Aim: To evaluate the outcome of single visit nonsurgical retreatment by clinical examination and PAI (Periapical Index) and, patients’ feedback regarding after 1 year.
 Material Method: 115 patients who previously had were recalled year dropouts, 84 examined clinically radiographical examinations completed pre-and postoperatively using Periapical Index. Patients also asked if they would st...

Root canal retreatment is often the preferred method of treating a tooth in which root canal treatment has failed. Part two of this two-part article discusses the rationale for root canal retreatment and practical techniques and equipment that are available to practitioners.

BACKGROUND: The complete removal of root filling material is one the main goals non-surgical endodontic retreatment. Thus, development new techniques and instruments aiming to promote this task presents clinical significance. AIM: purpose study was assess amount residual canal materials (gutta-percha/sealer) after using two different retreatment systems ultrasonic tip. METHODS: Forty-five mandi...

OBJECTIVES Infliximab has clearly demonstrated its efficacy in the short-term treatment of fistulizing Crohn's disease. We present here the results of retreatment and long-term maintenance therapy. PATIENTS AND METHODS Eighty one consecutive patients with active fistulizing Crohn's disease, in whom previous treatments had failed, were treated with infliximab. All patients received as the init...

The aim of this study was to compare the cleanliness of root canal walls after retreatment using two rotary retreatment files to hand instruments in severely curved canals obturated with gutta-percha and two different sealers. Single rooted mandibular premolars (n = 90) with root curvatures were instrumented and obturated with gutta-percha and an epoxy resin (Group 1, n = 45) or zinc oxide euge...

AIM To evaluate and compare the efficacy, cleaning ability of hand and two rotary systems in root canal retreatment. METHODOLOGY Sixty extracted premolars were retreated with following systems: Group -ProTaper Universal retreatment files, Group 2-ProFile system, Group 3-H-file. Specimens were split longitudinally and amount of remaining gutta-percha on the canal walls was assessed using direc...

INTRODUCTION Removal of root filling materials is one of the key steps in success of root canal retreatment. The purpose of this study was to evaluate the efficacy of H-File and ProTaper with or without chloroform in the removal of gutta-percha during retreatment of mandibular premolars. MATERIALS AND METHODS Sixty mandibular premolars with one canal, and curvatures less than 30 degrees were ...

This retrospective study investigated the clinical efficacy and safety of bortezomib retreatment in patients with relapsed or refractory multiple myeloma (MM). A total of 30 patients who relapsed or progressed after ≥6 months since the last dose of their previous bortezomib therapy were included in this study. During the median 6 cycles (range: 2-12) of bortezomib retreatment, 10 (33.3%), 2 (6....

INTRODUCTION Retreatment is performed in teeth with unsuccessful root canal therapy or persistent apical lesion. The most important factor for achieving successful retreatment is thorough cleaning and reshaping. NiTi files and rotary instruments are widely used for the removal of obturatants. This study compared the ability of Mtwo and D-RaCe retreatment systems to remove residual gutta-percha ...

Background Interferon-free treatment results in higher sustained virologic response (SVR) rates, with no serious adverse events in hepatitis C virus (HCV)-infected patients. However, in some patients with treatment-failure in HCV NS5A inhibitor-including interferon-free regimens, the treatment-emergent HCV NS5A resistance-associated variants (RAVs), which are resistant to interferon-free retrea...