Home | About Us | Editorial Board | Current Issue | Archives | Search | Instructions | Subscription | Feedback | e-Alerts | Login 
Journal of Indian Society of Pedodontics and Preventive Dentistry Official publication of Indian Society of Pedodontics and Preventive Dentistry
 Users Online: 760  
 
  Print this page Email this page   Small font sizeDefault font sizeIncrease font size
 ORIGINAL ARTICLE
Year : 2006  |  Volume : 24  |  Issue : 2  |  Page : 69-75

Effect of enamel preparations on fracture resistance of composite resin buildup of fractures involving dentine in anterior bovine teeth: An in vitro study


Department of Pedodontics and Preventive Dentistry, JSS Dental College and Hospital, Mysore - 570 015, Karnataka, India

Correspondence Address:
B Nandlal
Department of Pedodontics and Preventive Dentistry, JSS Dental College and Hospital, Mysore -570 015, Karnataka
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-4388.26019

Rights and Permissions

Sixty bovine teeth with simulated mesio-incisal angle fracture were randomly and equally divided in one untreated (control) group and three experimental groups (Bevel, Chamfer and newly introduced Stair-step Chamfer preparation group) to evaluate the effect of enamel preparations on the fracture resistance of composite resin. Post restoration, fracture mechanics approach was used to quantify the failure of composite resins in testing the samples in Instron testing machine. Mean peak failure load (Newton) of composite amongst experimental groups was observed in the order; Chamfer (326.09 + 72.73), Stair-step chamfer (315.21 + 81.77) and Bevel (253.83 + 67.38). Results of the One-Way ANOVA revealed significant difference in the mean peak failure load values of the four different groups. ( P < 0.001) Scheffe's Post-Hoc comparison test (Subset for alpha = 0.05) revealed that there was no significant difference in the mean peak failure load values of the bevel, stair-step chamfer and chamfer preparation when considered together, but the mean peak values of control group (605.22 + 48.96) were observed significantly higher. Failure mode evaluation revealed, majority of failures occurred as cohesive and mixed type for all the experimental groups. Adhesive type failure was observed maximum (33%) in the bevel group. Stair-step chamfer preparation showed greatest potential for application and use as it no only demonstrated comparable values to Chamfer preparation ['t' value (0.39) ( P > 0.05)] but also involved sacrificing less amount of tooth structure adjacent to fractured edge.






[FULL TEXT] [PDF]*


        
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
    Viewed12683    
    Printed208    
    Emailed8    
    PDF Downloaded594    
    Comments [Add]    
    Cited by others 12    

Recommend this journal

 


Contact us | Sitemap | Advertise | What's New | Copyright and Disclaimer 
  2005 - Journal of Indian Society of Pedodontics and Preventive Dentistry | Published by Wolters Kluwer - Medknow 
Online since 1st May '05