Home About us Editorial board Ahead of print Current issue Search Archives Submit article Instructions Subscribe Contacts Login 
  • Users Online: 236
  • Home
  • Print this page
  • Email this page
Year : 2019  |  Volume : 16  |  Issue : 4  |  Page : 264-270

Effect of bleaching protocols on surface roughness and biofilm formation on silorane-based composite resin

1 Department of Operative Dentistry; Dental and Periodontal Research Center,Dental Faculty, Tabriz Medical Sciences University, Tabriz, Iran
2 Department of Operative Dentistry, Dental Faculty, Tabriz Medical Sciences University, Tabriz, Iran
3 Department of Operative Dentistry, Dental Faculty, Ahvaz Jundishapur Medical Sciences University, Ahvaz, Iran

Correspondence Address:
Dr. Sarah Gholizadeh
Department of Operative Dentistry, Dental Faculty, Ahvaz Jundishapur University of Medical Sciences, Ahvaz
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1735-3327.261125

Rights and Permissions

Background: Knowledge about the effect of bleaching on behavior of composite resins is important to find a suitable composite resin for restoration of teeth undergoing bleaching. This study aimed to assess the effect of different bleaching protocols on surface roughness and biofilm formation on a silorane-based composite resin. Materials and Methods: In this in vitro experimental study, 60 silorane-based composite resin samples measuring 3 mm in thickness and 6 mm in diameter were fabricated and polished. They were then randomly divided into four groups (n = 15). In Group 1, samples were stored in distilled water as control. Samples in Groups 2, 3, and 4 were subjected to bleaching with 15% carbamide peroxide, 35% hydrogen peroxide, and 35% hydrogen peroxide activated by light, respectively. Surface roughness was measured using a profilometer. Streptococcus mutans cultured in brain-heart infusion broth was used for the assessment of biofilm formation on the samples. The bacterial colonies were counted using the pure-plate technique. Data were analyzed using one-way ANOVA and post hoc Tukey's tests. Regression model was used to assess the association between surface roughness and biofilm formation (P < 0.05). Results: The mean surface roughness of the four groups was not significantly different (P = 0.11); however, a significant difference was noted in the mean biofilm formation among the groups (P = 0.00). Conclusion: Bleaching decreased biofilm formation. The lowest biofilm formation was noted in the group subjected to light-activated 35% hydrogen peroxide. Increased surface roughness enhanced biofilm formation to a certain level; excessive roughness did not increase biofilm formation.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded123    
    Comments [Add]    

Recommend this journal