@article{ author = {}, title = {}, abstract ={   }, Keywords = {}, volume = {21}, Number = {2}, pages = {91-94}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-594-en.html}, eprint = {http://jida.ir/article-1-594-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {Shirani, Farzaneh and Maleki-Pour, Mohammad reza and Barfar, Gholamhosei}, title = {Effect of used diamond burs on dentin bond strength}, abstract ={ Effect of used diamond burs on dentin bond strength      Dr. Shirani F .,1 Dr. Maleki-Pour M R .,2 Dr. Barfar G .3   1 Assistant Professor, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences. Isfahan, Iran. 2 Assistant Professor, Department of Operative Dentistry, School of Dentistry, Islamic Azad University, Khorasgan. Isfahan, Iran. 3 Dentist.     (Received 15 Sep, 2008 Accepted 26 April, 2009)     Abstract     Background and Aim : Many researchers have reported that, constant use of diamond burs can reduce their cutting efficacy during cavity preparation. The aim of this study was to evaluate the effect of changes in diamond bur sharpness on dentin bond strength when using self-etch bonding system.   Materials and Methods : A total of seventy-two caries-free human 3rd molars were included in this in-vitro investigation. The teeth were sectioned in occlusal surface in order to expose dentin, and then were randomly divided into four groups. For dentin preparation, a fine diamond bur was used in group 1, a new coarse diamond bur was used in group 2, a used coarse diamond bur was used in group 3 after applying on porcelain for two minutes, and a used coarse diamond bur was used in group 4 after it was applied on porcelain for ten minutes. Unique composite capsules were bonded to all dentin surfaces using Clearfil SE Bond and then cured. After storage for 24 hours in 37○C distilled water, the bonded teeth were subjected to shear testing by using Instron testing machine. The bond strengths were calculated and recorded as failure. Bond strength data were analyzed by One-Way ANOVA and Tukey tests.   Results : The mean (Standard Deviation) of shear bond strength in each group can be reported as follows: 22.2Mpa(3.38) for group one, 18.05Mpa(4.54) for group two, 24.5Mpa(5.69) for group three and the figure was 22.4Mpa(4.52) for group four. The statistical analysis demonstrated that Shear bond strength of new coarse diamond bur preparations were significantly (P<0.001) less than fine or used diamond burs.   Conclusion : Used diamond burs of different durations can affect dentin bond strength of SE Bond self etch bonding system. Accurate type of bur and adhesive selection are essential in optimizing dentin adhesion to self-etching adhesives.   Key words : Dentin - Shear bond strength - Composite resin- Self-etch bonding system - Cutting efficacy – Diamond bur.       Corresponding Author : Dr. Shirani F ., Assistant Professor, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences. Isfahan, Iran.   e.mail: fshirani48@ yahoo.com  }, Keywords = {Dentin - Shear bond strength - Composite resin- Self-etch bonding system - Cutting efficacy – Diamond bur.}, volume = {21}, Number = {2}, pages = {95-102}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-595-en.html}, eprint = {http://jida.ir/article-1-595-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {}, title = {ِEvaluation of compressive strength in conventional and pack able}, abstract ={ ِEvaluation of compressive strength in conventional and pack able composite materials      Dr. Ghasemi A .,1 Dr. Torabzadeh H .,1 Dr. Moayedi S.2  1 Associate Professor, Department of Operative Dentistry, School of Dentistry, Shahid Beheshti University / MC. Tehran, Iran. 2 Specialist in Operative Dentistry.     (Received 6 Nov, 2008 Accepted 26 April, 2009)     Abstract   Background and Aim : The mechanical properties of composite resin have significant effect on performance and success of a restorative procedure. The aim of present investigation was to evaluate the compressive strength of conventional and pack able composite materials.   Materials and Methods : A stainless steel mold of 4 mm in diameter by 6 mm in height was used to fabricate 50 study specimens. The cylindrical specimens were divided in five groups (n=10). The materials used in this study were Alert, Charmfil Plus, P60, Z100 and Spectrum. Following photo polymerization by using Radi Plus light curing unit (SDI Limited), the specimens were stored in distilled water at 37 ○ C for 48 hours. The specimens were subjected to compressive stress using mechanical testing machine (Zwick/Roell) at cross head speed of 0.5 mm/min. One-Way ANOVA and Tukey's Post-hoc tests were employed to determine group differences and the significance level if any of the restorative materials could show significant difference among others.   Results : There were significant statistical differences between groups (P < 0.05). Z 100 showed the highest and Charmfil Plus demonstrated the lowest amount of compressive strength. There was no significant statistical difference between Z 100 and P 60, but, differences were significant between Z 100 and other materials.   Conclusion : Based on the findings of this investigation, the compressive strength of packable composites was not proving better than conventional composites.   Key words : Pack able composite - conventional composite - Compressive strength .       Corresponding Author : Dr. Torabzadeh H ., Associate Professor, Department of Operative Dentistry, School of Dentistry, Shahid Beheshti University / MC. Tehran, Iran.   e.mail: htorabzadeh@ icdr.ac.ir    }, Keywords = {Pack able composite - conventional composite - Compressive strength.}, volume = {21}, Number = {2}, pages = {103-106}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-596-en.html}, eprint = {http://jida.ir/article-1-596-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {Hassani-Tabatabaei, Masomeh and Moazzami, Mostafa and Ghavam, Maryam and Yassini, Esmaeil and Pahlavan, Ayoub and Arami, Sakineh and Mirzaei, Mansoreh and Bayat, Nayereh and Kermanshah, Hami}, title = {EDTA dentin conditioning and Micro-shear bond strength using SE and SEM}, abstract ={ EDTA dentin conditioning and Micro-shear bond strength using SE and SEM      Dr. Hassani-Tabatabaei M.,1 Dr. Moazzami SM., 2 Dr. Ghavam M.,1 Dr. Yassini E.,3 Dr. Pahlavan A.,1  Dr. Arami S.,4 Dr. Mirzaei M.,4 Dr. Bayat N.5 Dr. Kermanshah H .,4     1 Associate Professor, Department of Operative Dentistry, School of Dentistry, Tehran University / Medical Sciences. Tehran, Iran. 2 Associate Professor, Department of Operative Dentistry, School of Dentistry, Mashhad University of Medical Sciences. Mashhad, Iran. 3 Professor, Department of Operative Dentistry, School of Dentistry, Tehran University / Medical Sciences. Tehran , Iran . 4 Assistant Professor, Department of Operative Dentistry, School of Dentistry, Tehran University / Medical Sciences. Tehran, Iran. 5 Resident, Specialty Program, Department of Operative Dentistry, School of Dentistry, Mashhad University of Medical Sciences. Mashhad, Iran.     (Received 14 July, 2008 Accepted 6 May, 2009)   Abstract   Background and Aim : The main objective of using adhesive material is the improvement of restorative materials bonding to dentin surface in clean environment. The aim of this study was to investigate the effect of EDTA on bond strength of composite resin to dentin surface when used at different times and concentrations prior to application of adhesive systems by employing Scanning Electronic Microscope (SEM).   Materials and Method : A total of 100 dentin samples were prepared from 50 human premolars. These samples were divided into two groups according to bonding type ( Clearfil SE Bond =group I, Futurbond NR=group II ) and each one was classified 5 subgroups according to time and concentration of EDTA as follows: 1 – Control. 2- EDTA 15%, 30 seconds. 3 – EDTA 15%, 60 seconds. 4 – EDTA 24%, 30 seconds. 5 – EDTA 24%, 60 seconds. These samples were conditioned and composite cylinders were adhered to them. After 500 cycles of thermocycling, the testing for micro-shear bond strength was conducted on these samples. Another 10 samples were demineralized for 30 seconds with 6NHCL and deproteinized with 2.5% Naocl for 10 minutes, air dried with desiccators and viewed under SEM. Data were analyzed using one-way as well as three-way ANOVA and Tukey tests.   Results : The mean Micro-shear bond strength in group I (Clearfil SE bond) were: 31.88 ( ± 13) for subgroup 1, 28.4 ( ± 13) in subgroup 2, 29.8 ( ± 9) in subgroup 3, 29.2 ( ± 11) in subgroup 4, and 32.7 ( ± 12) in subgroup 5. The mean Micro-shear bond strength in group 2 (Futurbond NR): were: 22.6 ( ± 10) for subgroup 1, 28.5 ( ± 9) in subgroup 2, 27.3 ( ± 10) subgroup 3, 32.4 ( ± 15) in subgroup 4, and 31.1 ( ± 14) in subgroup 5.   There were no significant differences between the samples conditioned and the ones not conditioned with EDTA, time and the concentration of EDTA applied and also the two bonding types.   Conclusions : EDTA conditioning prior to use of the two bonding agents under investigation in this study did not improve the bonding strength of the self etch systems, neither did the time and the concentration of EDTA applied.   Key words : EDTA - Denting bonding - Self etch - Micro shear bond strength - SEM - Smear layer.     Corresponding Author : Dr. Kermanshah H ., Assistant Professor, Department of Operative Dentistry, School of Dentistry, Tehran University / Medical Sciences. Tehran, Iran .   e.mail: Kermanshah hamid@yahoo.com  }, Keywords = {EDTA - Denting bonding - Self etch - Micro shear bond strength - SEM - Smear layer.}, volume = {21}, Number = {2}, pages = {107-114}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-597-en.html}, eprint = {http://jida.ir/article-1-597-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {Feiz, Atiye and Khoroushi, Maryam and Gheisarifar, Maryam}, title = {Effect of sodium ascorbate and calcium hydroxide on shear bond strength of composite resin to bleached enamel}, abstract ={ Effect of sodium ascorbate and calcium hydroxide on shear bond strength of composite resin to bleached enamel       Dr. Feiz A ., 1 Dr. Khoroushi M ., 2 Dr. Gheisarifar M . 3   1 Assistant Professor, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences. Isfahan, Iran. 2 Associate Professor, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences. Isfahan, Iran. 3 Dentist.     (Received 2 Dec, 2008 Accepted 6 May, 2009)     Abstract   Background and Aim : Application of sodium ascorbate as an antioxidant and calcium hydroxide as a buffering agent has been recommended after bleaching .The aim of this study was to investigate the effect of these two materials on shear bond strength of composite resin attached to bleached enamel.   Materials and Methods : This in-vitro investigation used 60 human sound premolars. They were randomly divided into five groups (n=12). Buccal enamel surfaces were flattened by using a trimmer machine and silicon carbide paper. The samples in negative control (NC) group were not bleached, while all others were bleached with 35% hydrogen peroxide gel for 5 days. Composite cylinders were bonded in positive control (PC) group immediately after bleaching in delayed bonding (DB) group after one week in sodium ascorbate (SA) and calcium hydroxide (CH) groups after 40 hours of treatment with these two materials, respectively. The specimens were thermocycled (5-55○C, 500 cycles) 24 hours after bonding and they were subjected to shear bond testing by using universal machine. Statistical analyses were carried out to identify group differences and Kruskal–Wallis and Mann–Whitney tests were used to detect the significance level.   Results : Group differences revealed that, the lowst mean of bond strength belonged to the calcium hydroxide group the difference of which was significant compared with the other groups (P<0.006). The positive control group had lower bond strength in comparison with the negative control, sodium ascorbate and delay bonding groups (p<0/001) .But the difference among other groups was not significant.   Conclusions : Both one week delay and using sodium ascorbate treatment could significantly increase the bond strength of composite resin to bleached enamel, while the use of calcium hydroxide had an adverse effect on composite resin bond strength.   Key words : Bleaching - Bond strength - Antioxidant - Calcium hydroxide - Composite resin.     Corresponding Author : Dr. Gheisarifar M . Dentist.   e.mail: mgh_20002@yahoo.com    }, Keywords = {Bleaching - Bond strength - Antioxidant - Calcium hydroxide - Composite resin.}, volume = {21}, Number = {2}, pages = {115-121}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-598-en.html}, eprint = {http://jida.ir/article-1-598-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {Jalali, Hamid and Hajmiragha, Habib and Bazrpour, Amirhoseian and Nokar, Saee}, title = {Reliability of six methods of measuring convergence angle in posterior teeth for single PFM crown}, abstract ={ Reliability of six methods of measuring convergence angle in posterior teeth for single PFM crown       Dr. Jalali H .,1 Dr. Hajmiragha H .,1 Dr. Bazrpour AH .2 Dr. Nokar S. 1   1 Assistant Professor, Department of Prosthodontics, School of Dentistry, Tehran University / Medical Sciences. Tehran, Iran. 2 Dentist.     (Received 5 Nov, 2008 Accepted 9 May, 2009)     Abstract     Background and Aim : There are several methods of measuring Convergence Angle in posterior single PFM crown. The aim of the present study was to compare the reliability of these methods.   Materials and Methods : This experimental study was conducted with twenty selected stone dies, numbered 1 to 20. The convergence angles were measured and recorded by five last year dental students using manual and computer assisted methods. The manual methods used were: 1. Photocopy machine, 2. Digital camera, 3. Analogue camera (photography), 4. Overhead projector the computer assisted methods were: 5. Scanner machine and 6. Microscope. Data were analyzed using One Way Random Effect, and SPSS version 11 statistical software.   Results: Coefficient of reliability for methods 1 to 6 was 0.9981, 0.9988, 0.9986, 0.9991, 0.9957, and 0.9994 respectively. No significant difference was detected among these methods and all were found to be reliable.   Conclusion : There were no significant differences among the methods evaluated. Moreover, all methods were found to be significantly reliable and can be used for measuring convergence angles.   Key words : Reliability - Convergence angle - Axial wall inclination - Retention .       Corresponding Author : Dr. Nokar S ., Assistant Professor, Department of Prosthodontics, School of Dentistry, Tehran University / Medical Sciences. Tehran, Iran.   e.mail: noukarsa@sina.tums.ac.ir  }, Keywords = {Reliability - Convergence angle - Axial wall inclination - Retention.}, volume = {21}, Number = {2}, pages = {122-126}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-599-en.html}, eprint = {http://jida.ir/article-1-599-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {Shahoon, Hoseian and Valaee, Naser and Panahi, Samir}, title = {Evaluation of suture removal time and wound healing after third molar surgery}, abstract ={ Evaluation of suture removal time and wound healing after third molar surgery       Dr. Shahoon H.,1 Valaee N .,2 Dr. Panahi S .3   1 Assistant Professor, Oral & Maxillofacial Surgery Department, School of Dentistry , Shahed University. Tehran, Iran. 2 Member of Faculty, School of Dentistry, Islamic Azad University. Tehran, Iran. 3 Dentist.     (Received 17 Nov, 2008 Accepted 19 July, 2009)     Abstract     Background and Aim : Suture removal time is one of the most controversial issues after third molar surgery. The purpose of this study was to evaluate wound healings in relation with suture removal time after 5, 8, and 10 days following the third molar surgery.   Materials and Methods : This clinical trial study with double blind method was conducted on 90 patients in need of third molar surgery. Patients were non-smokers and had no history of known systemic diseases. Sex and age range were similar in all study groups. The same suturing material as well as post surgery medications were used for all participants. Patients were then divided into 3 groups in order to have their suture removal at 5th (group A), 8th (group B), and 10th (group C) day following the surgery. Statistical analysis was conducted and Kruskal-Wallis and χ2 tests were used for analyzing group differences and significance level by evaluating wound tension, wound healing and inflammation status.   Results : Group A, was almost without wound tension or had just a negligible amount of tension. Group B had 33% and group C had 17% of this condition (P<0.01). Moderate to severe inflammation was measured 70% in group A, 23.3% in group B and 20% in group C (P<0.001). Wound healing was 83% in group A, 17% in group B and 10% in group C (P<0.001) .Amount of tension in suture was 13.3% in group A, 70% in group B and 86.7% in group C (P<0.001).   Conclusion: Based on the results of this study, it seems that time factor plays an important role in wound healing. This is true as long as the suture tension is not reduced. Therefore, 8 days after the surgery is the best time for sutures removal.   Key words : Suture thread - Wound tension - Inflammation - Wound healing - Suture removal time - Third molar surgery .       Corresponding Author : Dr. Shahoon H., Assistant Professor, Oral & Maxillofacial Surgery Department, School of Dentistry , Shahed University. Tehran, Iran.   e.mail: shahoon11@yahoo.com  }, Keywords = {Suture thread - Wound tension - Inflammation - Wound healing - Suture removal time - Third molar surgery .}, volume = {21}, Number = {2}, pages = {127-131}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-600-en.html}, eprint = {http://jida.ir/article-1-600-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {Ehsani, Maryam and Mesgarani, Abbas and Soltani-Garmabi, Mohamm}, title = {Comparison of apical leakage using AH26 and Apatite root sealers with immediate and delayed post space preparation}, abstract ={ Comparison of apical leakage using AH26 and Apatite root sealers with immediate and delayed post space preparation       Dr. Ehsani M .,1 Dr.Mesgarani A.,1 Dr. Soltani -Garmabi M . 2   1 Assistant Professor, Department of Endodontics, School of Dentistry, Babol University of Medical Sciences. Babol, Iran. 2 Dentist, Babol, Iran.   (Received 6 Nov, 2008 Accepted 19 July, 2009)     Abstract   Background and Aim : Successful preparation and treatment of root canal depends on the compatibility between filling material and canal walls. On the hand, proper crown repair most often require post and core preparation. The aim of this study was to compare the effect of immediate versus delayed root canal preparation for post-space on apical seal using 2 types of sealers Apatite root sealer and AH26.   Materials and Methods : This experimental study was conducted on 76 anterior teeth with single root canals. These teeth were sectioned from the cervical area which left at least 12 mm of root portion. All teeth were randomly divided into 4 groups. There were 2 positive and 2 negative control teeth aside from 15 experimental teeth in each group. After cleaning and shaping, root canals were filled with Gutta Percha, using lateral condensation method and AH26 sealer (in groups 1 and 2), and Apatite root sealer (in groups 3 and 4). Post-spaces were immediately prepared in groups 1 and 3, leaving the last 4 mm of Gutta Percha in root canals. The root canals in groups 2 and 4 were kept in 100% moisture for a week and post-spaces were prepared with the same technique. Finally, all teeth were kept in Indian ink for 72 hours. All teeth were then demineralized in citric acid and demoisturized using ethylic alcohol. Photographs were taken from different angles using stereomicroscope connected to computer with 40x magnification in order to detect dye preparation. Photographs were evaluated by 2 independent individuals separately and dye penetration was measured. Data were analyzed using Two-Way ANOVA and Tukey tests.   Results : The immediate AH26 group had the lowest and the delayed Apatite root sealer had the highest rate of apical leakage and dye penetration. A significant difference was detected between immediate and delayed methods of post-space preparation (P<0.01). There was no significant difference between the 2 types of sealers used (P=0.426).   Conclusion : Immediate post-space preparation before sealer setting had less apical leakage. No significant difference was detected between AH26 and Apatite root sealers.  Key words: Apical leakage - Post-space preparation - sealer.       Corresponding Author : Dr. Ehsani M ., Assistant Professor, Department of Endodontics, School of Dentistry, Babol University of Medical Sciences. Babol, Iran.   e.mail: ehsanimaryam@yahoo.com  }, Keywords = {Apical leakage - Post-space preparation - sealer.}, volume = {21}, Number = {2}, pages = {132-137}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-601-en.html}, eprint = {http://jida.ir/article-1-601-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {Mazloomi-Mahmoodabad, and Moein-Taghavi, and Barkhordari, and Alidoosti,}, title = {Effect of role modeling through theater show in oral health education}, abstract ={ Effect of role modeling through theater show in oral health education       Dr. Mazloomi -Mahmoodabad S .,1 Dr. Moein-Taghavi A ., 2 Dr. Barkhordari A ., 3 Dr. Alidoosti F . 4   1 Associate Professor, Department of Disease Control, School of Public Health, Shahid Sadooghi University of Medical Sciences. Yazd, Iran. 2 Associate Professor, Department of Periodontics, School of Dentistry, Mashhad University of Medical Sciences. Mashhad, Iran. 3 Associate Professor, Department of Ocuptional Health, School of Public Health, Shahid Sadooghi University of Medical Sciences. Yazd, Iran. 4 Dentist.    (Received 22 Dec, 2008 Accepted 19 July, 2009)     Abstract   Background and Aim : There are different methods of oral health education for child population. Theater show is a method that has not received enough attention until now. The aim of this study was to evaluate the effect of using theater show on dental health education in Yazd femal elementary students.   Materials and Methods : This was a quasi experimental study performed by using pre- and post-test method in Iran over the year 2004. One elementary school from each region of the city was selected. Twenty students from each grade of each school were included in the study (n=200). The information on knowledge, attitudes and practice of oral health were collected by using a valid and reliable questionnaire before and after theater show performance. Data were analyzed using SPSS and Wilcoxon signed rank test.   Results : This study showed that the theater show could improve knowledge, attitude and proper oral health practice of children. The effect of the theater show on knowledge was more than attitude and was more on attitude than practice (P<0.001). Only literacy on the part of mothers was significantly correlated with practice (P=0.021). There were significant correlations between Knowledge (P=0.020), Attitude (P=0.0001) and oral health Practice (P=0.022) with students' grade level.   Conclusion : This study showed that using theater show for oral health education, could improve the oral health related knowledge, attitude and proper oral health practice by elementary school students.   Key words : Theater show - Oral health - Health education - Elementary students .       Corresponding Author : Dr. Moein-Taghavi A ., Associate Professor, Department of Periodontics, School of Dentistry, Mashhad University of Medical Sciences. Mashhad, Iran.   e.mail: MoeentaghaviA@mums.ac.ir  }, Keywords = {Theater show - Oral health - Health education - Elementary students.}, volume = {21}, Number = {2}, pages = {138-142}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-603-en.html}, eprint = {http://jida.ir/article-1-603-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {Moslemi, Masomeh and Erfanparast, Leyla and Fekrazad, Reza and Torabzadeh, Hasan and Akbarzadeh-Baghban, Alirez}, title = {Effect of Er,Cr:YSGG laser on fissure sealant retention: Comparative in-vitro study}, abstract ={  retract}, Keywords = {}, volume = {21}, Number = {2}, pages = {143-149}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-604-en.html}, eprint = {http://jida.ir/article-1-604-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} } @article{ author = {Taheri, Jamileh and Anbari, Fahimeh and Katebi, Negin and Fallah, Fatemeh and Kharazifard, Mohammadjav}, title = {Antimicrobial effects of sanosil solution on dental instruments}, abstract ={ Antimicrobial effects of sanosil solution on dental instruments       Dr. Taheri JB ., 1 Dr. Anbari F ., 2 Dr. Katebi N ., 3 Dr. Fallah F . 4 Dr. Kharazifard MJ .5   1 Associate Professor, Department of Oral Medicine, School of Dentistry, Shahid Beheshti University / MC. Tehran, Iran. 2 Resident, Specialy Program, Department of Oral Medicine, School of Denistry, Shahid Beheshti University / MC. Tehran, Iran. 3 Dentist. 4 Associate Professor, Department of Microbiology, School of Medicine Shahid Beheshti University / MC. Tehran, Iran. 5 Dentist, Member Dental Research Center, Tehran University / Medical Sciences. Tehran. Iran.     (Received 3 July, 2008 Accepted 23 July, 2009)     Abstract     Background and Aim : Sanosil is a brand new disinfectant that is composed of H2O2 and traces of Ag with considerable effectiveness. The aim of this study was to evaluate the effectiveness of Sanosil on disinfecting dental devices and instruments.   Materials and Methods : This laboratory-based study was conducted on 60 samples that were collected before (n=30) and after (n=30) administration of Sanosil from the same spots on dental instruments. The samples were cultured on blood agar and chocolate agar and were incubated in 37 ○ C for 24 hours. The effect of Sanosil was investigated by counting the number of microbial colonies after determining the standard laboratory species’ type and subtype. The data were analyzed by using SPSS version 14 and Chi-square test for determining the significance level, and alpha error was set at 0.05.   Results : The isolated microorganisms were mainly: Staphylococcus aureus, Streptococcus viridans, coagolase negative Staphylococcus, E.coli, Bacillus cereus, Bacillus subtilis and Staphylococcus epidermidis, E.coli Aeromonas hydrophila, corynebacterium, Microccus luteus. From the total samples 90% were free of any bacteria. Microbial load was significantly reduced (P<0.05) after Sanosil application on dental instruments and it also deferred the growth of standard microorganisms in vitro.   Conclusion : Sanosil is an effective agent in decreasing bacterial contamination of dental instruments without any adverse effect on the surface of instruments.   Key words : Disinfection - Microbial culture – Sanosil - Dental instruments.       Corresponding Author : Dr. Taheri JB., Associate Professor, Department of Oral Medicine, School of Dentistry, Shahid Beheshti University / MC. Tehran, Iran.   e.mail: JM_TAHERI2006@yahoo.com  }, Keywords = {Disinfection - Microbial culture – Sanosil - Dental instruments.}, volume = {21}, Number = {2}, pages = {150-155}, publisher = {Journal of Iranian Dental Association}, url = {http://jida.ir/article-1-605-en.html}, eprint = {http://jida.ir/article-1-605-en.pdf}, journal = {Journal of Iranian Dental Association}, issn = {2383-3041}, eissn = {}, year = {2009} }