The Effectiveness of GECB Pastille in Reducing Complications of Dry Socket Syndrome

Background and Purpose. Dry socket syndrome is one of the most irritating complications after tooth extraction. This study aims to investigate the efficacy of pastille GECB compared to ZOE. Materials and Methods. 30 patients with dry socket syndrome were selected and divided into two groups. GECB pastille was produced with 3% Guaiacol, 3% Eugenol 1.6% Chlorobutanol, sized 3 × 7 × 10 mm. GECB was applied in one group, and ZOE was used for the other group. Duration of pain after treatment and painkiller intake values were recorded within 20 days. The data were analyzed with independent samples t-test, Mann-Whitney, and Chi-Square tests. Results. Pain persisted for 45.53 ± 33.34 minutes in patients treated with ZOE and 19.87 ± 21.80 minutes in those treated with GECB (P = 0.19). Patients in the ZOE group reported more painkiller intake within 20 days (P = 0.031). Conclusion. GECB showed more significant efficacy in reducing complications after tooth extraction

The Effect of Synthetic Grape Seed Extract (GSE) on the Shear Bond Strength of composite resin to Dentin

Proper bonding to dentin depends on efficient infiltration of resin into the demineralized microporous collagen and formation of hybrid layer. Grape Seed Extract (GSE) has up to 97% PA and can potentially stimulate collagen cross linking and increase the stiffness of dentin. This study was designed to evaluate the efficacy of GSE on composite-dentin bond strength in different times and concentrations. In this experimental study, 60 freshly sound extracted teeth selected. The dentin surface of each specimen was acid-etched with 37% Phosphoric acid gel for 15 seconds and then they were rinsed for 10 s with distilled water. All teeth were divided to five groups (each group consists of 12 teeth). In control group GSE was not applied and in other groups different concentrations of GSE were applied for different times. The micro-shear bond strength of composite-dentin interface was evaluated using universal testing machine at a crosshead speed of 1 mm/min. Data were statistically analyzed using ANOVA test by SPSS software ver.15 ( α=0.05). The highest bond strength of one-day group was 17.28 MPa and the lowest bond strength in one-hour and one-minute group was 3.70 MPa. The difference between control group and one-day group, one-hour group and oneminute group was significant (p values 0.002, 0.024 and 0.012 respectively). Mann-Whitney revealed also that there was no significant difference between the experimental groups. We concluded that the produced GSE material could not improve the bond strength between adhesive and dentin

Reaction of Rat Subcutaneous Connective Tissue to Resin Composites Polymerized with Different Light Curing Units and Different Lightening Methods

The aim of the study was to determine and compare the reaction of rat subcutaneous connective tissue to resin composites polymerized with different lights curing and lightening methods. In this in vivo study, 20 mature Wister Albino rats were used. The composite discs, 4 mm in diameter and 2 mm thick, were cured by QTH or LED light curing units with 4 different lightning methods (full power QTH, full power LED, pulse LED, and ramp LED). Five resin composite discs were implanted in each rat, so that 4 of 5 discs for implantation of cured composite discs differently and central one as control without implantation. After sacrificing at 7, 14, 30, and 60 days the inflammatory grade, fibrosis, and necrosis were determined. Freedman and Cochran tests were used to analyze the data using SPSS software ver. 15. The results of the study showed significant differences in inflammation grade and fibrosis among control group and 4 experimental groups at day 14 (P < 0.05). In necrosis, there was no significant difference among 4 groups in different times (P > 0.05). In conclusion, neither the type of light curing units (LED or QTH) nor the lightening methods can affect the grade of inflammatory reaction

Knowledge, Attitudes and Performance of Dental Practitioners in Isfahan-Iran about Biologic Effects of Ionizing Radiation and Protection Against them in 2011

Introduction: Increasing use of dental radiography makes necessitates of increasing awareness and appropriate performance about ionizing radiation protection. The present study was done with the aim of evaluation of awareness, attitude and performance levels of dental practitioners in the city of Isfahan about ionizing radiation and protection against them.Materials & Methods: In this descriptive-analytic study a questionnaire including questions for evaluating of awareness, attitude and performance levels and demographic information was distributed among 184 dentists in the city of Isfahan. The data were analyzed by means of student t test and Pearson correlation coefficient in SPSS software (α=0.05). Results: In the present study 73.2% of dentists had weak awareness level 25.6% and 1.2% of dentists had moderate and good awareness levels respectively. Twentyfour and 76 percent had good and apathetic attitudes. Ten and 4.5 percent of dentists have been using lead apron and thyroidal necklace for their patients respectively. Experience and awareness had significant inverse correlation with eachother (P=0.004, r =-0.218).Conclusion: According to the results of the presents study, the awareness of dentists was weak and academic education as well as post-graduate education is necessary

Prosthodontic Rehabilitation of the Patient with Severely Worn Dentition: A Case Report

The management of tooth wear has been a subject of increasing interest from both preventive and restorative points of view. This paper describes the full mouth rehabilitation of a 63-year-old bruxer man with a severely worn dentition and other dental problems including unsuitable restorations and several missing teeth. The treatment entailed using cast posts and cores, metal-ceramic restorations, and a removable partial denture. As with the treatment procedure of such cases, equal-intensity centric occlusal contacts on all teeth and an anterior guidance in harmony with functional jaw movements were especially taken into account

The Effect of Endurance Exercise on Alpha Amylase, PH and Cortisol Level of Saliva

Background and Aim : Exercise is one of the activities to achieve fitness therefore it should be performed in an appropriate way and its side effects should be minimized. It has been mentioned in the literature that in physiologic activities, there are important factors in the serum and saliva which have a significant role in dental and oral health, especially on dental caries. In this study, we decided to figure out how these oral health related factors are altered in endurance exercise .   Materials and Methods : In this study, the samples included nineteen 18 to 25-year-old beginner male athletes. Two samples of saliva were taken, one before running for control and one after 1000 meters for test. Salivary pH was digitally measured immediately after collecting the samples. Cortisol and alpha amylase of the saliva in both control and test samples were evaluated by ELISA method. Data were analyzed with SPSS software and evaluated with descriptive statistical methods .   Results: Endurance exercise in beginner athletes increased the mean alpha amylase level in their saliva from 59.57 to 107.52 IU/mL and the salivary cortisol from 2.73 to 3.60 Ng/mL. The mean salivary pH showed a 0.56 decrease (p<.001 ).   Conclusion : There was an increase in the salivary cortisol and alpha amylase level and a decrease in salivary pH after endurance exercise

Magnet-retained facial prosthesis combined with maxillary obturator

Prosthetic rehabilitation of the midfacial defects has always perplexed prosthodontists. These defects lead to functional and esthetic deficiencies. The purpose of this clinical case report was the presentation of the prosthetic rehabilitation of an extraoral-intraoral defect using two-piece prosthesis magnetically connected. This prosthesis has dramatically improved the patient’s speech, mastication, swallowing, and esthetic

The effect of spraying different disinfectants on condensational silicone impressions; an in vitro study

Background: Dentistry equipment are exposed to different types of pathogenic microorganisms. The aim of this study was to investigate the effect of spraying three different types of disinfectants on condensational silicones after 5 and 10 min. Materials and Methods: Totally, 66 circular samples of condensational silicone impression materials of 1 cm diameter and 2 mm thickness were contaminated by Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans fungus. Except for control samples, all of them were disinfected with sodium hypochlorite (NaOCl) 0.525%, Deconex and Epimax by spraying method. Afterward, they kept in plastic bags with humid rolled cotton for 5 and 10 min. In order to isolate microbiotas, the samples were immersed in 2% trypsin for 1 h and diluted with normal saline in a portion of 1, 1/2, and 1/4. The trypsin suspensions were transferred to culture plates for incubation and colony-forming unit assay. The data were analyzed by Mann-Whitney test and SPSS software version 16 at a significant level of 0.05. Results: There was a meaningful difference between disinfection effects of Epimax-Deconex for all mentioned microorganisms after 5 min (P = 0.034), and between disinfection effects of NaOCl 0.525%-Epimax for S. aureus (P = 0.043) and P. aeruginosa (P = 0.046) after 5 min. Furthermore, there was a meaningful difference between disinfection effects of Epimax-Deconex (P = 0.034) and NaOCl 0.525%-Epimax (P = 0.034) for P. aeruginosa after 10 min. Conclusion: Condensational silicone can be effectively disinfected by spraying tested three disinfecting agents. More specifically, Deconex showed the best results compared to the other agents

Risk of contamination of different areas of dentist′s face during dental practices

Background: Dental practice presents opportunities for cross-contamination. The dentist′s face is at high-risk of infection transmission. The purpose of this study was to evaluate the risk of contamination in different areas of dentist′s face during dental practices. Methods: The visible splashes of materials that accumulated on cellulose face shields during 144 prosthetics and periodontal procedures were evaluated. The splashes were detected on 14 areas (each 1 cm 2 ) of the dentist′s face including around nose, mouth, eyes, and zygoma by a magnifier (×2). One way Analysis of variance, Duncan and t-test were used for data analysis (α = 0.05). Results: Contamination of different areas of dentist′s face was significantly different (P < 0.05). The areas around nose and the inner corner of eyes were the most contaminated areas. Zygoma was the least contaminated area. The contaminated areas during periodontal treatments were significantly more than prosthetic treatments (P < 0.05). There was no significant difference between contamination on left and right sides of the face. Conclusions: During dental practice, central areas of the face such as inner part of the eyes and around the nose were most contaminated areas. These parts are the important areas for transmission of infection. It is recommended to use protective means like glasses, mask, and protective shield, which have more protection field in these areas