Post-operative Pain Clinical Trial
Official title:
Evaluation of the Relationship Between Eye Color and Post-Operative Pain in Female Patients Experiencing Symptomatic Irreversible Pulpitis in A Mandibular Molar: A Prospective, Parallel-Group, Observational Clinical Study
Current evidence indicates that some phenotypic characteristics, such as eye or hair color, might be associated with the experience of pain. We therefore compared the anaesthetic success rate of inferior alveolar nerve block (IANB), and post-operative pain scores between light and dark eyed in female patients experiencing symptomatic irreversible pulpitis (SIP) in a mandibular molar. 110 adult patients, experiencing moderate or severe pain with SIP, participated in this prospective study. All patients received IANB of 4% articaine with 1:100.000 epinephrine. Endodontic access cavity preparation was initiated after confirmed of IANB with numbness of the lower lip. Pain during treatment was recorded by using a Heft Parker Visual Analog Scale. Anaesthetic success was recorded as ''none'' or ''mild'' pain. Root canal treatment was performed, with standardized protocols. Post-operative pain scores were also recorded 24, 48, 72 hours and 7 days after treatment.
Female patients with no systemic diseases (ASA 1-2); aged between 18-45 years; eye colors with brown, hazel, green, or blue; mandibular molar teeth diagnosed SIP were included in this study. Categorization Of The Patient's Eye Color Categorization of the patient's eye color was made by an independent researcher. Patients were also asked to indicate their own eye color. If a consensus could not be reached between the researcher and the patient regarding eye color, the patient was excluded from the study. Blue-green colors were categorized as light; all shades of brown were categorized as dark. Root Canal Treatment Procedures All dental procedures, including anesthesia injection, were performed by a single endodontist. 119 patients received IANB injections of 1.8 mL 4% articaine with 1:100,000 epinephrine (Ultracain D-S; Sanofi, Paris, France) using Halstead method. 27-gauge needle (Beybi Medical Co., Istanbul, Turkey) were used for all injections. Anesthetic solution was slowly deposited to the target area for 60 seconds. 10 minutes after IANB anesthesia, patients were asked whether their lip were numb. Patients who reported no profound lip numbness were excluded from the study. An access cavity was prepared using a high speed steril diamond bur #801G (Meisinger) under abundant water coolant after isolation with a rubber dam. Patients were instructed to inform the operator if they felt pain during acces cavity preparation. Pain intensity was rated into 4 categories using the HP VAS. Level 1: No pain (0) Level 2: Mild pain (1-3 mm) Level 3: Moderate pain (4-6mm) Level 4: Severe pain (7-10 mm). The IANB anesthesia was defined as successful when the patient reported no pain or mild pain during cavity preparation. The IANB anesthesia was considered unsuccessful in patients with moderate or severe pain; in these cases, an intrapulpal anesthesia was performed. After localizing the canal orifices, the working length (WL) was determined using a 10 K file (VDW, Munich, Germany), to be 0.5 mm shorter than the "0.0" reading on the apex locator (Morita Root ZX, Japan), and confirmed by radiographs. Root canal were prepared using the R25 (Reciproc, VDW) file in the mesial root canals and the R25, R40, and R50 files in the distal root canals, respectively, with crown-down technique. After 3 pecking motions the file was removed from the root canal and debris on the file surface was cleaned. The pecking depth for the pecking motions were 3-4 mm. Each root canals was irrigated a total of 20 ml of 2,5% sodium hypochlorite (NaOCl; Wizard, RehberKimya, Istanbul, Turkey) solution using 30 G irrigation needle (Medic; Shangai Carelife, China). After NaOCl. 5 ml of distilled water used to neutralize the effect of NaOCl. The final irrigation was performed with 3 mL 17% ethylenediaminetetraacetic acid (EDTA; Coltene, Altstatten, Switzerland) solution. The Endoactivator (EA; Dentsply Tulsa Dental Specialties, Tulsa, OK) 25/04 tip placed 2 mm behind the WL was used in 3 cycles of 20 s each. EDTA was activated with 2-4 mm vertical movements for 1 min using the EA. 5 ml of distilled water used to neutralize the effect of EDTA followed by the root canals were dried with paper points (VDW). The root canals were filled with the lateral condensation using gutta-percha cones (VDW) and epoxy-resin-based sealer (AH Plus; Dentsply DeTrey GmbH, Konstanz, Germany) in a single visit. All teeth were restored with resin composite (Estelıte Sıgma Quıck; Tokuyama, Tokyo, Japan). The root canal filling was checked by radiographs. If any complications such as broken file, ledging, could not be reached to the WL; overfilling (filling beyond the radiographic apex) or short filling (>2 mm from the radiographic apex) the patient was excluded from the study. The patients were prescribed 400 mg of ibuprofen, and instructed to take it only in the presence of pain. Patients were asked to rate their post-op pain on the HP VAS scale at hours 24h, 48 h, 72h and on day 7 after the treatment and to record analgesic drugs they used. ;
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