Paper Title:
In Vitro Bond Strength of Based-Coated Zirconia Brackets for Orthodontics
  Abstract

In Vitro Bond strength of base-coated (Y, Fe)-TZPs (yttria and iron co-doped tetragonal zirconia polycrystals) were investigated to evaluate the feasibility for the ceramic bracket applications. Pre-sintered (Y,Fe)-TZP brackets were machined, abraded and spray-coated with granule slurries containing 10~50 wt% of flux. Better adhesion to the base surface of the brackets was observed by raising the amount of flux in the slurries. It may be because of the fusion and the collapse of the granules as a result of the high amount of flux. The one-way analysis of variance indicated that there were significant differences in bond strength measurements between the experimental groups except 30% and 50% flux content groups. The Weibull distribution revealed that 50% flux content group is the best with a high characteristic strength value. Mean ARI values exhibited large differences and ranged from 1.6 for 50% flux content group to 3.0 for non-coated group. Adhesive remnant of adhesive resin was decreased by increasing the flux up to 50%. Reduction in adhesive remnant is likely due to the higher bonding of adhesive resin to granules. No teeth and bracket damages were found in any teeth de-bonded by shear force. The base-coated brackets with higher strength (11.5 MPa) and no adhesive remnant were newly proposed for the orthodontics applications.

  Info
Periodical
Key Engineering Materials (Volumes 361-363)
Main Theme
Edited by
Guy Daculsi and Pierre Layrolle
Pages
857-860
DOI
10.4028/www.scientific.net/KEM.361-363.857
Citation
M. H. Lee, H. S. Choi, K.S. Oh, Y.K. Kim, H.B. Yim, D. Y. Lee, N. S. Oh, "In Vitro Bond Strength of Based-Coated Zirconia Brackets for Orthodontics", Key Engineering Materials, Vols. 361-363, pp. 857-860, 2008
Online since
November 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: A.M.G. Pinto, A.G. Magalhães, Raul D.S.G. Campilho, Marcelo F.S.F. de Moura, A.P.M. Baptista
Abstract:Polyolefins are especially difficult to bond due to their non-polar, non-porous and chemically inert surfaces. Acrylic adhesives used in...
1157
Authors: Dong Bin Fan, Te Fu Qin, Fu Xiang Chu
Abstract:The oil-tea cake, as the major byproduct of tea oil production, was used with phenol-formaldehyde (PF) resin to prepare a mixed interior...
2183
Authors: Yan Qin, Jin Rong Jia, Zhi Xiong Huang
Polymer Materials
Abstract:A new two-component polyurethane adhesive was prepared with castor oil used as main agent and castor oil modified TDI used as curing...
1128
Authors: Bao Wen Zhang, Jian Ping Lin, Zhi Guo Lu
Abstract:In the weld-through technique of weld-bonding process, adhesive usually suffers extremely high temperature, causing damage to adhesive and...
128
Authors: Ponthep Vengsungnle, Kiatfa Tangchaichit
Chapter 1: Product Design, Manufacturing and Analysis
Abstract:The objective of this work is to determine the strength of the adhesive injected into the gap between the bearing and actuator arm surfaces...
405