Endodontic Clinical Outcome after Separated Instrument Removal Using a Spinal Needle Technique: A Retrospective Study of Thirty Years of Clinical Experience.

Introduction: Current methods for the removal of separated endodontic instruments (RSI) are not predictable.

Methods: The primary outcome of this retrospective study was to assess the clinical and radiographic success (CRS) of teeth in case of RSI after a 5-year follow-up. Secondary outcomes were to evaluate (1) the effectiveness in RSI and (2) the risk of root fracture after RSI.

Repair of teeth with cracks in crowns and roots: An observational clinical study.

Aim: This retrospective observational study investigated the survival rate of teeth with radicular cracks that were restored using composite materials.

Methodology: The study was approved by the Ethical Committee of Sistema Sanitario Nazionale (prot. N°2370CELazio1), Clinicaltrials.

The comparative effectiveness and safety of three activated irrigation techniques in the isthmus area using a transparent tooth model.

Aim: To compare the effectiveness and safety of three activated irrigation techniques when removing pulp tissue from the isthmus of a transparent tooth model. The three techniques assessed were: the EndoVac (EV), passive ultrasonic irrigation (PUI) and ultrasonic wave aspiration (TUWA). Conventional syringe irrigation (CSI) was used as a control.

A new technique to make transparent teeth without decalcifying: description of the methodology and micro-hardness assessment.

Diaphanisation and other in vitro endodontic models (i.e., plastic blocks, micro-CT reconstruction, computerised models) do not recreate real root canal working conditions: a more realistic endodontic model is essential for testing endodontic devices and teaching purposes.

Efficacy and safety of various active irrigation devices when used with either positive or negative pressure: an in vitro study.

Introduction: The purpose of this in vitro study was to evaluate and compare the efficacy and safety of different devices available for canal cleansing.

Methods: The following systems were tested: passive ultrasonic irrigation, EndoVac (Discus Dental, Culver City, CA), and the irrigation ultrasonic needle (ProUltra PiezoFlow Irrigation Ultrasonic Needle; Dentsply Tulsa Dental Specialties, Tulsa, OK) used in both the injection mode (IUNI) and the aspiration mode (IUNA). In the control group, traditional irrigation with a syringe and side-vented needle was used.

A technique for placement of apical MTA plugs using modified Thermafil carriers for the filling of canals with wide apices.

Aim: To describe a technique for the placement of apical Mineral trioxide aggregate (MTA) plugs in canals with wide apices.

Summary: A novel technique to fill root canals with an apical diameter larger than 0.4 mm is presented.

Investigation on the shaping ability of nickel-titanium files when used with a reciprocating motion.

Introduction: The introduction of nickel-titanium (NiTi) files into clinical practice has improved the quality of canal shaping, but increasing the curvature of the root canal (or the diameter of the master instrument that prepares the full working length) could result in more transportation, straightening, and aberration of the canal. Nickel-titanium instruments are significantly safer and have an extended cyclic fatigue life when used with a reciprocating movement. The purpose of this study was to compare the shaping ability of FlexMaster NiTi instruments when used in either continuous or reciprocating movements.

[Root resorption. 1. Etiopathogenesis, diagnosis and clinical manifestations].

The authors, after having thoroughly reviewed the literature regarding all types of root resorption, specifically investigated those of clear endodontic pertinence, and evaluated the etiopathogenesis, the possibility of diagnosis, and the clinical incidence.

Abnormalities of short-latency somatosensory evoked potentials in parkinsonian patients.

Twenty-two patients (16 affected by parkinsonian syndromes, 6 by other neurological diseases) and 12 age-matched controls were examined. Short-latency somatosensory evoked potentials were recorded from 30 scalp electrodes in the 45-52 msec following separate left and right median nerve stimulation at the wrist. Bit-colour maps were generated on a 4096 pixel matrix via quadratic interpolation.