[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 31, Issue 3 (Summer 2013) ::
J Dent Sch GYEAR__, 31(3): 177-185 Back to browse issues page
Effect of Nano Titanium Dioxide on Self-Cleaning and Antibacterial Properties of Dental Mirrors
Sara Tavassoli Hojjati Dr., Mohammad Mahdavi Dr., Faezeh Hamzeh Dr., Mohammad Bagher Rezvani Dr., Fatemeh Ahmadian Babaki Corresponding Author: Dr. * , Hooriyeh Saderi Dr., Mohammad Javad Kharazifard Dr.
Assistant Professor Dept. of Pediatric Dentistry , f.ahmadianb@gmail.com
Abstract:   (4343 Views)

  Objective: Surface coating of dental mirrors using nanotechnology has been done to render them self-cleaning properties. Nano-scaled titanium dioxide particles (TiO2)show antimicrobial properties when exposed to ultra-violet (UV) light. The aim of this study was to evaluate the effect of surface coating of dental mirrors with nano titanium dioxide on their self-cleaning (from dentists’ perspective) and antibacterial properties against Streptococcus mutans and Staphylococcus aureus.

  Methods: In this laboratory study, nanostructured titanium dioxide films were used for surface coating of half the understudy dental mirrors using sol-gel dip coating technique. To assess the self-cleaning property, 45 conventional and 45 nano TiO2 coated mirrors were coded. The two types of dental mirrors were compared by dentists during cavity preparation with a high speed hand piece and the related questionnaire was filled out. The opinions of 9 clinicians each comparing the dental mirrors on 5 patients were collected. For antimicrobial testing, a 0.5 McFarland standard of microbial suspension and 100 times dilution of the solution were prepared of the two understudy microorganisms 50 μldrop of each dilute was transferred to the center of each dental mirror in the two groups. Dental mirrors were exposed to UV light for 30, 60, 90 and 120 min (3 mirrors in each group for each time period) and then immersed in 5ml of distilled water. Next, 50μl of the mentioned solution was cultured on blood agar culture medium. Number of colonies was counted after 24h. T-test with a significance level of 0.01 was used for microbial evaluation. Normal distribution tests (NPAR tests) were used for the assessment of improved vision and Friedman test was applied for comparison of the two groups.

  Results: No statistically significant difference was found between the two groups in terms of antibacterial properties against S. mutans and S. aureus (P>0.05). No significant difference existed between the two types of mirrors in terms of clinical vision improvement from the dentists’ perspectives (P>0.05).

  Conclusion: Nano TiO2 coated mirrors did not have any superiority over the conventional types in terms of self-cleaning or antimicrobial properties.

Keywords: Dental mirror, Nanoparticles, Titanium dioxide, Self-cleaning property, Antibacterial, Coating materials.
Full-Text [PDF 127 kb]   (1183 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2013/10/14 | Accepted: 2013/11/11 | Published: 2013/11/11
Send email to the article author

Add your comments about this article
Your username or Email:

Write the security code in the box >

XML     Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Tavassoli Hojjati S, Mahdavi M, Hamzeh F, Rezvani M B, Ahmadian Babaki F, Saderi H et al . Effect of Nano Titanium Dioxide on Self-Cleaning and Antibacterial Properties of Dental Mirrors. J Dent Sch. 2013; 31 (3) :177-185
URL: http://jds.sbmu.ac.ir/article-1-1169-en.html

Volume 31, Issue 3 (Summer 2013) Back to browse issues page
مجله دانشکده دندانپزشکی دانشگاه علوم پزشکی شهید بهشتی Shahid Beheshti University Dental Journal
Persian site map - English site map - Created in 0.06 seconds with 31 queries by YEKTAWEB 3701