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Postoperative Pain After Using Er,Cr,YSGG Lazer Irradiation During Root Canal Treatment

2018-12-31 08:23:12 | BioPortfolio

Summary

Irrigation with sodium hypochlorite (NaOCl) during chemo-mechanic preparation for effective root canal disinfection is a standard protocol in root canal treatment. NaOCl is an alkali irrigant with pH 11.0 -12.0. Nearby its high antimicrobial efficacy, cytotoxic features make it questionable when it comes contact with periradicular tissues. Several irrigation materials were investigated less cytotoxic, more or equal antimicrobial to avoid such adverse effects. Calcium hypochlorite, chlorhexidine, chitosan and antibiotics are some of the chemicals tested. Laser is not a chemical but its action may show antibacterial effect. Studies showed that Er,Cr:YSGG laser is strongly antibacterial against Enterococcus faecalis biofilm. This antibacterial effect were frequently obtained with laser activated irrigation (LAI) or photon-induced photoacoustic streaming (PIPS) in the literature. The aim of this study was to evaluate whether disinfection procedure with laser provides more or less benefit in terms of postoperative pain when compared with the conventional NaOCl irrigation method.

Description

Both for maxillary and mandibular teeth, infiltration anesthesia were achieved by local anesthetic with 2 ml articaine hydrochloride with 1:200000 epinephrine (Maxicaine, VEM İlaç, Ist, Turkey). Endodontic access preparations were performed using diamond round burs. After the canals became visible, patency was checked with a K hand file (VDW, Munich, Germany), and a rubber dam was placed for isolation. The working length (WL) was determined with an electronic apex locator (Raypex 6, VDW) and accepted when three green bars were reached.

A crown-down preparation technique was performed using Reciproc nickel-titanium instruments (VDW, Munich, Germany) R#50 according to the manufacturers' instruction until the WL. During the instrumentation procedures, the root canals were irrigated with 6 ml of 2,5% NaOCl between each file.

In laser group, each root canal was dried with paper points and then Er,Cr:YSGG (Biolase™, Waterlase™, San Clemente, CA, USA) was used for intracanal disinfection with the following parameters: panel output power of 0,75 W, pulse frequency of 20 Hz, and 1% water pressure to 10% air pressure ratio laser with RFT3 tips (415 µm diameter radial firing tip RFT3 Endolase, Biolase Technology, Inc; calibration factor of 0.85). The fiber was placed at 1mm short of the WL. Irradiation was delivered along the entire length of the root canal with helicoradial movements, 1mm per seconds in speed. This procedure was repeated three times and kept for 20 seconds between each irradiation.

In control group, each canal were irrigated with 6 ml of 2,5% NaOCl. For the final irrigation, 5 ml of sterile saline were used. During irrigation, needle was inserted 1 mm short of the WL.

At the end of disinfection procedures, each root canal was dried with paper points and the largest gutta-percha cone that reached the WL without any resistance was used as the master cone. Measurements from the electronic apex locator were confirmed radiographically. In cases of discrepancies between the radiographic and electronic measurements, the latter was selected. All root canals were filled with gutta-percha and root canal sealer (Adseal Meta Biomed Co, Korea) using the lateral condensation technique. The teeth were coronally sealed with composite resin (Premise, Kerr, Salerno, Italy). After the completion of the root fillings, postoperative instructions were given to all patients and prescribed 200 mg ibuprofen only one tablet if it is needed within the 0- to 6-hour time interval after the treatment and then one for every 8 hours in the event of pain.

Study Design

Conditions

Postoperative Pain

Intervention

Er,Cr:YSGG Laser, Sodium hypochlorite

Status

Completed

Source

Cukurova University

Results (where available)

View Results

Links

Published on BioPortfolio: 2018-12-31T08:23:12-0500

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