PubMed İndeksli Açık & Kapalı Erişimli Yayınlar
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Item Root Canal Length Measurement of Molar Teeth Using Cone- Beam Computed Tomography (CBCT): Comparison of Two-Dimensional Versus Three-Dimensional Methods(2021) Sisli, Selen Nihal; Gulen, Orhan; 34250476Purpose This study aimed to evaluate the validity of 2-dimensional (2D) and 3-dimensional (3D) cone-beam computed tomographic (CBCT) root canal length measurements of molar teeth compared with actual root canal lengths and the influence of canal curvature on the accuracy of CBCT measurements. Materials and Methods Seventy root canals of 24 molar teeth were scanned using CBCT, and the root canals were categorized as; 'straight/curved:'highly curved" and 'multiple curved!The 2D measurements were performed within a suitable slice between the major foramen and the corresponding cusp. The 3D measurements were performed within the slices in regular intervals of axial planes in between the same reference points. The reproducibility and reliability of the methods were analyzed by intraclass correlation coefficient. Differences between the actual and CBCT root canal lengths were evaluated by chi-square and McNemar tests if the measurements were within acceptable limits of +/- 0.5 mm. Results Both methods were found to be reproducible and presented excellent reliability. However, the 3D method was significantly more accurate, with an 85.7% frequency of measurements within accepta ble limits (p<0.05). In 'multiple curved' root canals, the 3D method presented more reliable measurements than the 2D method. For 'straight/curved' root canals, the 2D method gave results significantly closer to the actual root canal length in comparison with 'highly curved' root canals (p<0.05). Conclusion The 3D measurements are more accurate than 2D measurements. If an already existing CBCT is present, it could be an alternative method for predetermination of root canal lengths in molar teeth.Item Assessment of alternative emergency treatments for symptomatic irreversible pulpitis: a randomized clinical trial(2018) Birgul, Eren; Onay, Emel Olga; Ungor, Mete; 0000-0002-3276-0843; 0000-0001-5800-8871; 28857203; B-4134-2008; ABE-9724-2021Aim To evaluate three emergency procedures for their ability to alleviate clinical symptoms associated with symptomatic teeth having signs of (at least) partial irreversible pulpitis. Methodology Sixty-six maxillary and mandibular molars were randomly assigned to a total pulpectomy group (TP; n = 22), partial pulpectomy group (PP; n = 22) or pulpotomy group (P; n = 22). Procedure durations were recorded. Patients answered a questionnaire on daily analgesic requirements and about clinical symptoms (pain intensity, chewing sensitivity and thermal sensitivity) after the anaesthetic effect had disappeared (Day 0) and on Days 1, 3 and 7 post-treatment. Results The total pulpectomy group was associated with the longest procedures (median, 24 min), followed by the partial pulpectomy and pulpotomy groups (P < 0.001 for all). In all three groups, pain intensity, thermal sensitivity and chewing sensitivity decreased significantly from the preoperative time-point to Day 7 (P < 0.001 for all). The total pulpectomy group reported greater reductions in pain intensity than the pulpotomy group between Days 0 and 7, Days 1 and 3, and Days 1 and 7 (P < 0.001 for all). No other intergroup differences were noted regarding reductions in pain intensity, and none were observed with respect to changes in prevalence of thermal sensitivity and chewing sensitivity. There were also no significant intergroup differences regarding the analgesic requirements throughout the 7days. Conclusion As emergency treatments for teeth having signs of irreversible pulpitis, pulpotomy, partial pulpectomy and total pulpectomy were comparable with respect to relieving clinical symptoms. Pulpotomy may be preferred because it requires significantly less time and is a simple technique that relieves symptoms quickly and effectively.