40
Participants
Start Date
February 1, 2018
Primary Completion Date
October 15, 2021
Study Completion Date
February 1, 2022
Laser-device group
"After each instrumentation, the root canals were irrigated with 1.5 % sodium hypochlorite (NaOCl).~Depending on allocations, in the laser-device groups, the adjuvant treatment approaches were performed either by means of photodynamic therapy (HELBO, Photodynamic Systems GmbH) or high power diode laser (940nm, Biolase ® Technology, CA, USA). Performing photodynamic therapy the root canals were filled with the phenothiazine chloride (HELBO® Endo Blue, Bredent, Germany) for 2 min following irradiation of diode laser (HELBO® TheraLite Laser (λ = 660 nm, power = 100 mW)) for 60 s. Performing only diode laser the root canals were be irrigated with a diode laser (λ = 940 maximal power 10W) for 60 s."
Essential Oil
"After each instrumentation, the root canals were irrigated with 1.5 % sodium hypochlorite (NaOCl).~Depending on allocations, in the EO group, the adjuvant treatment approaches were performed either by means of essential oil (Cymbopogon martinii and Thymus vulgaris, Herba oils, Herba d.o.o, Belgrade, Serbia)"
Sodium hypochlorite group
Mechanico-chemical root canal preparation and root canal disinfection were be performed by means of mechanic-chemical methods including hand instruments followed by 1.5% sodium hypochlorite (pH 12), at room temperature (21 degrees Celsius).
School of Dental Medicine, University of Belgrade, Belgrade
University of Belgrade
OTHER