The Effect of CuO Nanoparticles on Antimicrobial Effects and Shear Bond Strength of Orthodontic Adhesives
Journal Title: Journal of Rehabilitation Sciences and Research - Year 2018, Vol 19, Issue 1
Abstract
Statement of the Problem: Orthodontic appliances facilitate microbial plaque accumulation and increase the chance of white spot lesions. There is a need for new plaque control methods independent of patient's cooperation. Purpose: The aim of this study was to determine the effects of incorporating copper oxide (CuO) nanoparticles on antimicrobial properties and bond strength of orthodontic adhesive. Materials and Method: CuO nanoparticles were added to the composite transbond XT at concentrations of 0.01, 0.5 and 1 wt.%. To evaluate the antimicrobial properties of composites containing nanoparticles, the disk agar diffusion test was used. For this purpose, 10 discs from each concentration of nano-composites (totally 30 discs) and 10 discs from conventional composite (as the control group) were prepared. Then the diameter of streptococcus mutans growth inhibition around each disc was determined in blood agar medium. To evaluate the shear bond strength, with each concentration of nano-composites as well as the control group (conventional composite), 10 metal brackets were bonded to the human premolars and shear bond strength was determined using a universal testing machine. Results: Nano-composites in all three concentrations showed significant antimicrobial effect compared to the control group (p< 0.001). With increasing concentration of nanoparticles, antimicrobial effect showed an upward trend, although statistically was not significant. There was no significant difference between the shear bond strength of nano-composites compared to control group (p= 0.695). Conclusion: Incorporating CuO nanoparticles into adhesive in all three studied concentrations added antimicrobial effects to the adhesive with no adverse effects on shear bond strength.
Authors and Affiliations
Mohammad Hossein Toodehzaeim, Hengameh Zandi, Hamidreza Meshkani, Azadeh Hosseinzadeh Firouzabadi
Prediction of Scapular Dyskinesis Through Electromyographic Indices of Scapulothoracic Muscles in Female Overhead Athletes
Background: Shoulder joint function and the athletic performance of overhead athletes are influenced by scapular dyskinesis (SD) due to its high prevalence among these athletes and the motor interaction between the scapu...
Center-Based Care and Language Development: A Pilot Study on 6-15 Month-Old Persian-Speaking Children
Background: Although it is usually recommended that children begin care after their second or third year, some employed parents have to enroll their children in childcare from under the age of 6 months in Iran. Regardles...
Piezopuncture-Assisted Canine Distalization in Orthodontic Patients: Two Case Reports
With the increasing number of young adults seeking orthodontic treatment to improve their smile esthetics or oral function, the time spent wearing brackets is one of the biggest challenges for these patients. Various sur...
Effects of Short Term and Long Term Usage of Patellar Kinesio Taping on Patellar Position in Women with Patellofemoral Pain Syndrome
Background: Patellar mal tracking is responsible for pain and disability in patellofemoral pain syndrome (PFPS). Patellar kinesio taping may have different effects on short and long term usage. The aim of this study is t...
Comparing Environmental Barriers to Social Participation Between Visually, Auditory Impaired Primary School Children and Normal Peers in Shiraz City
Background: Participation is an important component in a child’s growth, which is not just affected by child’s functional abilities, skills, interests and family culture; but also affected by the physical, social and ins...