Different Dentin Conditioning Protocols on Bond Strength of a Bioceramic Root Canal Filling.

Objective: Bioceramic-based sealers, in combination with bioceramic-coated gutta-perchas, have become more commonly used in root canal obturation. The present study aimed to assess the influence of laser-assisted dentin conditioning compared with conventional conditioning protocols on the push-out bond strength (PBS) of a bioceramic-based root canal filling.

Material And Methods: Sixty extracted mandibular premolars with one root canal were instrumented with EndoSequence rotary files up to size 40/0.

Evaluation of the knowledge of final-year dental students on the use of antibiotics in endodontics in Turkey.

The knowledge of the final-year dental students on antibiotic use in endodontics in Turkey was assessed. The study was conducted at 20 Dentistry Faculties. A questionnaire was sent to the universities including the concerning several scenarios about endodontic cases.

Evaluation of deformation and fracture rates for nickel-titanium rotary instruments according to the frequency of clinical use.

Purpose: To evaluate the deformation and fracture rates for ProTaper Universal (PTU) nickel-titanium rotary instruments according to the frequency of clinical use.

Materials And Methods: A total of 619 PTU instruments (S1, S2, F1, F2, and F3) that have been used in the clinic by a single endodontist were collected over a period of 4 years. These instruments were grouped on the basis of one to three (Group A), four to six (Group B) and seven to nine (Group C) clinical uses (one canal = one use).

In vitro comparison of gutta-percha-filled area percentages in root canals instrumented and obturated with different techniques.

Purpose: To evaluate the efficacy of different obturation techniques in root canals instrumented either by hand or rotary instruments with regard to the percentage of gutta- percha-filled area (PGFA).

Materials And Methods: One hundred and sixty extracted mandibular premolars with single, straight root canals were studied. Root canals were prepared to an apical size of 30 by hand with a modified crown-down technique or the ProTaper and HEROShaper systems.

Comparison of the Shaping Ability of WaveOne Reciprocating Files with or without Glide Path in Simulated Curved S-shaped Root Canals.

Objectives: The aim was to compare the shaping ability of WaveOne reciprocating files with or without glide path in simulated curved S-shaped root canals.

Materials And Methods: Forty ISO #15, 0.02 taper, clear resin Endo Training Bloc-S blocks were studied.

Effect of rotational speed on root canal preparation with Hero 642 rotary Ni-Ti instruments.

The purpose of this study was to evaluate the influence of Hero 642 rotary Ni-Ti instruments driven at 300, 400, or 600 rpm on root canal straightening, loss of working length, and instrument breakage. Sixty mesial root canals from extracted human mandibular molars were divided into 3 groups of 20 each and were instrumented at the aforementioned rotational speeds with a crown-down technique. Using a digital intraoral radiography system directly on the images of pre- and postoperative radiographs, degrees of canal curvatures were measured and recorded.