Caspian Journal of Dental Research

8-13

Authors: Leila Farhadmollashahi , Alireza Nakhaie , Marieh Honarmand *, Fateme Arbabi-Kalati , Payam Ghahari

Introduction: The habit of smokeless tobacco chewing is one of the known risk factors for oral cancer among the residents of southeast of Iran. Most likely, the antioxidant defense system in dealing with free radicals induced paan and prevention of oral cancer is important. In this study, the activity of super oxide dismutase is compared in the saliva of paan consumers and non-consumers. Methods: In this study, Unstimulated saliva of 87 subjects (47 paan consumers and 40 non-consumers) who referred to the Oral Medicine Department of Dentistry School of Zahedan was collected. The activity of super oxide dismutase enzyme was measured by standard biochemical methods (Mc Cord and Fridovich) and the obtained data were analyzed by statistical software SPSS-15 through non-parametric Mann-Whitney test. Results: The mean activity of super oxide dismutase was significantly higher in the paan consumers group (4.4±1.6 u/mg) compared to non-consumers (3.59±1.8 u/mg, p=0.027). Conclusions: The results of this study demonstrate that consumption of paan leads to increased activity of salivary super oxide dismutase.

21-27

Authors: Sara Entezari, Babak Amoian , Majid Fereidooni* , Fateme Esmi , Ali Bijani

Introduction: Periodontitis and dental caries may be synergistically associated, negatively associated, or completely independent. The aim of this study was to evaluate the correlation between these two diseases and investigate the prevalence of dental caries in periodontitis. Methods: This cross-sectional study has been performed in 180 samplesin two groups: periodontal and control group; during 2012-2013 in Babol Dental School. All 180 patients were divided into two groups, including 90 cases with chronic periodontitis as the periodontal group (PG) and 90 cases with healthy gums as the control group (probing depth between 2-3mm) (HG). Clinical measurments in cluding Gingival Index (GI), Bleeding Index ( BI), Clinical Attachment Loss (CAL), Periodontal Pocket Depth (PPD) were used to assess the severity of periodontal disease. The clinical features of control group were healthy gums, probing less than 3mm in depth, and CAL<1mm. The examination to measure AL was conducted using a Williams’s periodontal probe. In chronic periodontitis group, the patients had GI≥1 and CAL≥1. The assessment of caries of patients was conducted using bitewing radiography for proximal caries detection, dent on the use of explorer and direct observation. A p-value≤0.05 is considered as significant. Results: The results of this study showed that the mean number of decayed and filled teeth (DFT) in periodontal group was 4.32±0.17, and in healthy group was 2.16±0.17. DFT in males with periodontitis was 4.85±0.17 and in females was 4.3±0.17,while the healthy males was 2.54±0.17, and females was 2.25±0.17; therefore, the mean DFT in the periodontal group was more than the healthy group (p≤0.05). Conclusion: Based on our findings, in patients with periodontitis, more dental carries were more significant than the healthy group.

35-40

Authors: Ali Soleymani *, Sina Mirzairad , Abbas Mesgarani , Azadeh Harandi , Soraya Khafri , Farideh Feizi , Mahyar Bahmannia4

Introduction: Apical seal in blood or dry root canal is a problem in endodontic treatment. Failure of apical seal causes inflammatory reaction and failure root canal treatment. Because of the sealer properties, root canal should be dry for obturation. But hydrophilic sealers can adhere to root canal walls nowadays and this problem is still controversial. This study aimed at determining the apical microleakage of AH26 and MTA Fillapex sealers in dry and bloody condition. Methods: This experimental in vitro study was done on 48 extracted central teeth. The researchers used the Mtwo rotary files for root canal instrumentation. In this process, the teeth were divided into four groups (2 dry groups and 2 bloody groups) and two groups as positive and negative control (each group of 4 teeth). All sealers were prepared according to the factory instruction and the obturation was done with gutta-percha and sealer. After 7 days in 100% moisture condition, the teeth were placed in the ink for 3 days and then were cut across longitudinal axis and the level of microleakage was measured by stereomicroscope. Finally, the data were analyzed by SPSS software, ANOVA, Chi-Square and t-test statistical tests. Results: The mean of MTA Fillapex and AH26 apical microleakage in blood groups were (448.61±34.67) Mm and (429.84±31.63) Mm respectively. The minimum microleakage belonged to AH26 sealer, but it was not significant. Conclusion: AH26 sealer is a better barrier against microleakage in comparison with MTA Fillapx, although it is not significant. Also, the evidence suggests drying the canal leads to a better apical seal and the blood significantly increases apical microleakage.

47-51

Authors: Shimae Nafarzadeh *, Mina Motallebnejad , Anahita Ghorbani , Naghmeh Jamaatlou

Introduction: Neurofibromatosis is a genetic disease characterized by multifocal benign tumors of peripheral nerves, called neurofibromas, and pigmented spots on the skin which inherited as autosomal-dominant. The most common form of the disease is neurofibromatosis type 1, also known as von Recklinghausen's disease of the skin. When an individual has small number of lesions in a limited region of the his body, it could be missed by the patient or not acknowledged by the clinicians as a form of neurofibromatosis. We present here, a case of an 18-year-old male with neurofibromatosis type 1who referred to Babol Dental School for a routine dental examination.