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Pain after root canal treatment is an important problem that affects the quality of life of patients. Common factors affecting the formation of pain after root canal treatment include insufficient root canal shaping, irrigation solution extrusion, intracanal medicament extrusion, hyperocclusion, missed canals, presence of pre-procedural pain, presence of periapical pathology, and extrusion of apical debris . It has been reported that the file systems and instrumentation technique used in root canal preparation affect apical extrusion, which is the main cause of postoperative pain . It has been reported that single-file systems introduced to the market to shorten root canal treatment time cause less postoperative pain than multi-file systems. However, there are different opinions about the effect of reciprocal and rotational file systems on postoperative pain.
It has been reported that coronal flaring during root canal shaping facilitates apical access of instruments and irrigation solution. NiTi instruments generally tend to orient tissue debris coronally, coronal shaping can create a reservoir for collecting debris accumulated in the coronal portion of the root. Therefore, increasing the coronal space for debris reduces the amount of apically removed extrusion. However, single file systems do not have a coronal flaring file and canal preparation is completed with a single file. An increased amount of apical extrusion may occur due to insufficient coronal shaping during canal preparation using single-file systems.
In this study, the effect of the use of coronal flaring file together with rotational and reciprocal single file systems on postoperative pain will be investigated, since there are different results about the effects of rotational and reciprocal file systems on postoperative pain, and although it has been reported that coronal flaring reduces apical extrusion, there is no study that determines the effect on postoperative pain. Thus, it is aimed to reduce the pain after root canal treatment and to have a more comfortable and painless process after the procedure.
Full description
The study is planned to be conducted on a total of 80 patients aged between 18-45 who were diagnosed and followed up in Van Yüzüncü Yıl University, Faculty of Dentistry, Department of Endodontics. Patients with no systemic disease, diagnosis of irreversible pulpitis, single rooted and single canal lower premolar tooth will be included in the case group. Patients with resorption and calcification in the roots of their teeth, incomplete root development, pregnant and lactating patients, who have taken analgesics or anti-inflammatory drugs in the last 12 hours and cannot use a rubber dam for root canal treatment will not be included in the study. After obtaining informed consent from the patients, local anesthesia (Ultracain DS Fort, Hoechst-Marian Roussel, Frankfurt, Germany) will be administer to the tooth for which root canal treatment will be applied. Under the rubber dam isolation, the access cavity will be opened with diamond burs. Working length will be determined using a #15 K file (Mani Inc, Tochigi, Japan) and electronic apex locator (Propex Pixi, Dentsply Maillefer, Switzerland).
Patients will be divided into 4 groups according to the file systems to be used in root canal treatment;
Group 1: Wave One Gold Group 2: One Flare + Wave One Gold Group 3: One Curve Group 4: One Flare + One Curve
During the shaping process, 5.25% NaOCI and 17% EDTA will be used as irrigation solution. NaviTip irrigation needle (30-G; Ultradent Products Inc, South Jordan, USA) will be used for irrigation during shaping. After the root canal shaping is completed, the canals will be rinsed with distilled water as a final irrigation and the root canals will be filled with gutta percha and Adseal (Meta Biomed, Cheongju, North Korea) root canal sealer using the single cone technique. Teeth will be restored with composite. Patients will be prescribed 400 mg of ibuprofen anti-inflammatory medication to use in case of severe pain. The pain levels of the lines before and after the procedure will be evaluated with the VAS (Visual analogue scale) pain scale. Patients will be given a 10 cm paper ruler to record their pain levels over 6, 12, 24, 48, 72 hours and 1 week periods. Patients will be told how to score their pain levels and will be asked to mark their pain levels on the given ruler at the specified times. At the end of the 1-week period, the tables will be collected from the patients and statistical analysis will be made and interpreted for the data.
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80 participants in 4 patient groups
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Murat Tunca, Phd; Hacer Şahin Aydınyurt, Phd
Data sourced from clinicaltrials.gov
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