ORIGINAL_ARTICLE Comparison of Canal Transportation and Centering Ability of Wave One and SafeSider in Curved Root Canals Using Cone-Beam Computed Tomography Background and Aim: Maintaining the original central canal path during cleaning and shaping of the root canal system plays an important role in the success of endodontic treatment. This study sought to compare canal transportation and centering ability of WaveOne and SafeSider rotary files using cone-beam computed tomography (CBCT). Materials and Methods: This in-vitro, experimental study was conducted on 40 mesiobuccal canals of extracted human mandibular first molars with 20° to 40° of curvature. The teeth were randomly divided into two groups (n=20) and mounted in putty. Next, preoperative CBCT scans were obtained. Root canals were prepared using primary file of WaveOne in group A and SafeSider system up to file #25/0.04 taper in group B. Postoperative CBCT scans were taken and cross-sectional images at 1, 3, and 7 mm distances from the anatomic apex were compared. Data were analyzed using t-test and two-way analysis of variance (ANOVA). Results: WaveOne was significantly superior to SafeSider regarding the canal centering ability and caused significantly less canal transportation (P<0.001). The canal centering ability of both systems was higher at the coronal and middle thirds of the root compared to the apical region (P<0.05). Conclusion: WaveOne, in contrast to SafeSider, has optimal canal centering ability and less transportation in curved root canals.  http://jrdms.dentaliau.ac.ir/article-1-208-en.pdf 2018-12-01 1 8 10.29252/jrdms.3.3.1 Root Canal Preparation Cone-Beam Computed Tomography Rotary instruments Wave One Safe Side N Nazarian nazarian@yahoo.com 1 Dentist AUTHOR M Abbasi ma_8498@yahoo.com 2 Assistant Professor, Endodontics Dept, Faculty of Dentistry, Tehran Medical Sciences, AUTHOR https://orcid.org/0000-0002-7663-9455 SH Sakhdari sh.sakhdari@yahoo.com 3 Assistant Professor, Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, AUTHOR S Ghannad setareh.ghannad@ya 4 Assistant Professor, Department of Endodontics, Faculty of Dentistry, Tehran Medical Sciences, AUTHOR
ORIGINAL_ARTICLE Evaluation of the Prevalence of Systemic Diseases in Patients Referring to the Oral and Maxillofacial Medicine Department of the Dental Branch of Islamic Azad University of Tehran During 2016-17 Background and Aim: Given the relatively high prevalence of systemic diseases, the importance of these diseases in patient management, treatment planning, and treatment outcomes, the controversy in the reported incidence rates, and changes in the frequency of diseases over time, we aimed to determine the prevalence of systemic diseases among the patients referring to the Dental Branch of Islamic Azad University of Tehran in 2016-17. Materials and Methods: The present research was carried out by studying the existing data. All records of patients who referred to the Oral and Maxillofacial Medicine Department during 2016-17 were extracted from the archives and evaluated for systemic diseases. The prevalence of systemic diseases in the subjects was estimated with 95% confidence interval. The role of related factors (age, gender, etc.) was statistically determined by Chi-square test. Results: Out of 6270 records, 2595 patients (41.4%) had systemic diseases and conditions; hypertensive diseases (8.42%), thyroid diseases (7.05%), and digestive diseases (6.5%) had the highest prevalence rates. 50.7% of the patients were women and 49.3% were men; the prevalence of systemic diseases was 41.5% below 45 years of age and 48.5% over 45 years of age. Medical consultation was requested for 702 patients, and drug intake was observed in 2029 patients. Request for medical advice and drug intake were more frequent in women and at over 45 years of age. Conclusion: The results showed that the prevalence of systemic diseases (41.4%) is high. Hypertension showed the highest prevalence. The incidence of systemic diseases increases with age and is higher in women. http://jrdms.dentaliau.ac.ir/article-1-209-en.pdf 2018-12-01 9 18 10.29252/jrdms.3.3.9 Prevalence Disease Epidemiology Drug Therapy M Taghibakhsh mehrdad.taghibakhsh@yahoo.com 1 Assistant professor, Oral Medicine Dept, Faculty of Dentistry, Tehran Medical Sciences, AUTHOR N Moezzi ghadim dr.nahid.moezzi@gmail.com 2 , Oral Medicine Dept, Faculty of Dentistry, Tehran Medical Sciences, AUTHOR https://orcid.org/0000-0002-3354-7614 M Rayat zadeh 3 Dentist AUTHOR
ORIGINAL_ARTICLE Evaluating the Symmetry of Permanent Teeth Dimensions on Two Sides of Dental Arches with Different Occlusions and Related Factors Background and Aim: Considering the importance of teeth dimensions in their adequacies and aesthetics, their significant racial differences, and various statistics regarding the dimensions of symmetrical teeth in previous articles, we aimed to evaluate the dimensions of symmetrical permanent teeth on two sides of the maxillary and mandibular dental arches and related factors in different occlusions of students and patients of Islamic Azad Dental University of Tehran. Materials and Methods: This cross-sectional study was conducted on 210 people. A dental cast was made for each individual. The mesiodistal, labiolingual, and occlusogingival dimensions of the clinical crowns were measured using a caliper with the accuracy of 0.1 mm along with their adaptation and symmetry on two sides of the maxillary and mandibular dental arches and related factors. Data were analyzed using Chi-square test. Results: 67.1% of the patients were females and 32.9% were males. There were 69.3% symmetric and 30.7% asymmetric cases; there were no significant differences in terms of the dimensions, gender, and jaws (P<0.8). Regarding teeth types and variations in maxillary and mandibular central incisors, symmetrical values were 10.3%, while non-symmetrical values were 31.3%. Asymmetrical values in central incisors of both dental arches were significantly greater than symmetrical values. Conclusion: It seems that on the left and right sides of both dental arches of permanent teeth in both genders, symmetrical values are greater than asymmetrical values. Asymmetrical values in central incisors of both arches were significantly greater than symmetrical values.   http://jrdms.dentaliau.ac.ir/article-1-210-en.pdf 2018-12-01 19 26 10.29252/jrdms.3.3.19 Permanent Dentition Asymmetry Dental Arch Dental Models Occlusion Odontometry R kaviani rakavira@yahoo.com 1 Assistant Professor,Faculty Member and Head of Department, Anatomy and Morphology Department, AUTHOR https://orcid.org/0000-0002-3238-7460 AR Mackinejad 2 Assistant professor, Faculty Member and Head of Department, Anatomy and Morphology Department, AUTHOR Z Pourgholi Takromi 3 Dentist AUTHOR SA Mirmehdi 4 Dentist AUTHOR
ORIGINAL_ARTICLE Comparison of Tubular Penetration of AH26, EasySeal, and SureSeal Root Canal Sealers in Single-Rooted Teeth Using Scanning Electron Microscopy Background and Aim: Tubular penetration of root canal sealers prevents filling material displacement and overgrowth of microorganisms in dentinal tubules. The aim of this study was to compare the tubular penetration of AH26, EasySeal, and SureSeal sealers in single-rooted teeth using scanning electron microscopy (SEM). Materials and Methods: Fifty human single-rooted teeth were included in this experimental study. After root canal preparation, AH26 was used in group 1, EasySeal was used in group 2, and SureSeal was used in group 3 using the lateral condensation technique. Sections at 3 mm and 6 mm from the apex were prepared and subjected to SEM analysis. Analysis of variance (ANOVA), post hoc and paired t-tests were used to compare the deepest dentinal penetration of root canal sealers. Results: The deepest tubular penetration at 3 mm from the apex was 0.85±0.19 mm in group 1, 1.32±0.21 mm in group 2, and 1.17±0.42 mm in group 3; the difference was significant (P=0.01). The deepest tubular penetration at 6 mm from the apex was 1.09±0.3 mm in group 1, 2.12±0.45 mm in group 2, and 1.88±0.43 mm in group 3; the difference was significant (P=0.0001). The mean deepest tubular penetration was lower at 3 mm from the apex compared to the penetration at 6 mm from the apex (P=0.02). Conclusion: It seems that tubular penetration of AH26 sealer is less than that of EasySeal and SureSeal at 3-mm and 6-mm sections.   http://jrdms.dentaliau.ac.ir/article-1-211-en.pdf 2018-12-01 27 32 10.29252/jrdms.3.3.27 Epoxy Resin-Based Root Canal Sealer Dentin Root Canal Preparation Root Canal Filling Materials Scanning Electron Microscopy Tooth Root S Toursavadkohi 1 Assistant professor, Endodontics Dept, Faculty of Dentistry, AUTHOR F Zameni zameni.fatemeh@yahoo.com 2 Dentist AUTHOR https://orcid.org/0000-0002-5871-4650 M Afkar 3 Assistant professor, Endodontics Dept, Faculty of Dentistry, AUTHOR
ORIGINAL_ARTICLE Efficacy of Low-Level Laser Versus Transcutaneous Electrical Nerve Stimulation for Treatment of Myofascial Pain Syndrome: A Clinical Trial Background and Aim: Myofascial pain syndrome (MPS) is the most common cause of facial muscle pain. This study sought to assess the efficacy of transcutaneous electrical nerve stimulation (TENS) and low-level laser (LLL) for treatment of MPS in comparison with a sham laser control group. Materials and Methods: In this randomized controlled clinical trial, 55 MPS patients between 18-60 years old were randomly assigned to TENS, LLL (810 nm) or sham laser group. At the onset of treatment, 500 mg of methocarbamol and 250 mg of naproxen t.i.d. were prescribed for 10 days as the standard treatment protocol. Tenderness and pain of major muscles of mastication, minor muscles, and temporomandibular joint (TMJ) were evaluated using a visual analog scale (VAS). Maximum mouth opening and deviation and deflection of the jaw were also evaluated before and one month after the intervention. Data were analyzed using Kruskal-Wallis test and non-parametric Dunn’s test. Results: Pain severity (VAS score) in the masseter, lateral pterygoid, and trapezius muscles (at the side of greater involvement) significantly decreased in both TENS and LLL groups after the treatment. In the sternocleidomastoid (SCM) and anterior temporalis muscles, significant pain reduction only occurred in LLL group. Mouth opening significantly increased in TENS group and decreased in LLL group. TMJ pain significantly decreased only in TENS group. Conclusion: Both TENS and LLL were efficient for treatment of MPS; however, the efficacy of TENS was found to be slightly higher than that of LLL. http://jrdms.dentaliau.ac.ir/article-1-207-en.pdf 2018-12-01 33 41 10.29252/jrdms.3.3.33 Myofascial Pain Syndromes Transcutaneous Electrical Nerve Stimulation Low-Level Laser Therapy S Khalifeh 1 Dentist AUTHOR E Rezaee 2 Assistant professor, Oral Medicine Dept, Faculty of Dentistry, Tehran Medical Sciences, AUTHOR A Azizi 3 Professor, Oral Medicine Dept, Faculty of Dentistry, Tehran Medical Sciences, AUTHOR H Ebrahimi Hooman.ebrahimi@yahoo.com 4 Assistant professor, Oral Medicine Dept, Faculty of Dentistry, Tehran Medical Sciences, AUTHOR https://orcid.org/1-5939-3185
ORIGINAL_ARTICLE Effect of GapSeal® as a Sealing Material on Microgap and Microleakage at External Hexagon Implant Connections Following Cyclic Loading: An In Vitro Study Background and Aim: The mismatch of the implant-abutment connection can produce instant stress and microleakage which result in mechanical and biological complications. This study aimed to investigate the influence of GapSeal® as a sealing material on the extent of microgap and microleakage at the external hexagon implant platform following cyclic loading. Materials and Methods: Sixteen implants with an external-hexagon connection (BioHorizons External dental implant) were employed in this in-vitro experimental study. All implant-abutment sets were assigned to two groups and were molded in acrylic resins. GapSeal® was injected into the implants in the experimental (test) group. Then, implant assemblies were tightened with the torque of 30 N/cm, and 1200,000 loading cycles with the force of 100 N and the frequency of 1 Hz were applied. Every sample was immersed in a methylene blue dye to evaluate microleakage. Microgap was measured in six regions randomly using a scanning electron microscope (SEM). The data were entered into SPSS 22 and were analyzed using t-test. Results: The mean±SD microgap was 0.87±0.35 µm and 3.43±1.61 µm in the test and control groups, respectively. Methylene blue dye was observed in all of the specimens of the control group, while no liquid was seen in the test group. A significant statistical difference was found between the groups regarding the microgap and microleakage (P<0.0001). Conclusion: Application of GapSeal® reduced the dimension of the microgap and decreased microleakage at the implant-abutment interface. http://jrdms.dentaliau.ac.ir/article-1-216-en.pdf 2018-12-19 42 48 10.29252/jrdms.3.3.42 Dental Leakage Dental Implant-Abutment Design Dental Marginal Adaptation A Zarbakhsh arashz1350@gmail.com 1 Assisstant Prof, Prosthodontics Dept, Faculty of Dentistry, AUTHOR A Mazaheri Tehrani azitamt@yahoo.com 2 Assisstant Prof, Prosthodontics Dept, Faculty of Dentistry, AUTHOR F Shamshirgar farinshamshirgar@gmail.com 3 Assisstant Prof, Prosthodontics Dept, Faculty of Dentistry, AUTHOR H Khosroshahi hadikhosroshahi84@gmail.com 4 Post Grduated Students, Prosthodontics Dept, Faculty of Dentistry, AUTHOR
CASE_STUDY درمان غیرتهاجمی در مدیریت موکوسل دهانی در کودکان، کیس ریپورت http://jrdms.dentaliau.ac.ir/article-1-171-fa.pdf 2018-12-05 49 52 10.29252/jrdms.3.3.49 Mucocele Pediatric dentistry Triamcinolone acetonide Corticosteroid Injection A noninvasive approach for management of recurrent oral mucocele in pediatric patients: a therapeutic case report Background: Mucocele is a clinical term referring to a swelling caused by saliva accumulation at the site of an obstructed or traumatized minor salivary gland duct. This article reports the efficiency of intralesional corticosteroid injection in the treatment of a recurrent oral mucocele in a pediatric patient. Case presentation: A 7-year-old girl presented with the chief complaint of a painless swelling on the lower lip. A gradual increase in size with some episodes of emptying was noticed. The intraoral examination revealed a sessile, nodular and exophytic lesion on the lower lip. Two consecutive intralesional injections of 40 mg/ml triamcinolone acetonide were done at the base of the lesion. A significant reduction in size was observed after the first injection, and the lesion disappeared after two weeks. No recurrence was noticed during the one-year follow-up. Conclusion: Intralesional corticosteroid injection may be considered a less invasive and cost-effective approach for the management of oral mucoceles. http://jrdms.dentaliau.ac.ir/article-1-171-en.pdf 2018-12-05 49 52 10.29252/jrdms.3.3.49 Mucocele Pediatric Dentistry Triamcinolone Acetonide Injections N Gholami nedagholami64@gmail.com 1 Assistant Professor, Department of Oral and Maxillofacial Medicine, AUTHOR S Badakhsh drbadakhsh@yahoo.com 2 Assistant Professor, Department of Pediatric Dentistry, AUTHOR