The ball mill as a means of investigating the mechanical failure of dental materials

Abu Kasim, N.H.; Millett, D.T.; McCabe, J.F. (1996) The ball mill as a means of investigating the mechanical failure of dental materials. Journal of Dentistry, 24 (1-2). pp. 117-124. ISSN 0300-5712

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      Abstract

      Objective: The main purpose of this paper is to present a new method of predicting clinical performance using mechanical loading in a ball mill. Methods: A series of four experiments (two involving a hybrid composite and one each on orthodontic brackets and bands) is described in which the ball mill was used to subject specimens to mechanical fatigue. Results: A reproducibility study using composite beam specimens showed no significant difference between the Mean Survival Time (MST) in all the three experimental runs (P = 0.42). When subjected to thermal cycling, the MST of the cycled group was 155.0 min compared to 247.0 min fur the control group (P < 0.01). The MST of untreated and sandblasted brackets was 7.9 h and 14 h respectively (P < 0.01). There is also a significant difference (P < 0.001) in the MST of sandblasted bands when compared to the untreated bands. Conclusions: The ball mill proved to be a convenient and reproducible means of producing mechanical fatigue and may be useful in predicting the clinical performance of dental materials.

      Item Type: Article
      Creators:
      1. Abu Kasim, N.H.(Department of Conservative Dentistry, Faculty of Dentistry Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA)
      2. Millett, D.T.
      3. McCabe, J.F.
      Journal or Publication Title: Journal of Dentistry
      Additional Information: Associate Prof. Dr. Noor Hayaty Binti Abu Kasim Department of Conservative Dentistry, Faculty of Dentistry Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
      Uncontrolled Keywords: Ball Mill; Fatigue; Composites; Orthodontics; Self-Repair; Culture-Conditions; Composite Resin; Dental Pulp Stem Cell; Functionally Graded Design; Multi Layered Post; Functionally Graded Dental Post; Soft Skills; Clinical Pairing; Dental Pulp Stromal Cells; Long-Term Expansion
      Subjects: R Medicine > RK Dentistry
      Divisions: Faculty of Dentistry > Dept of Conservative Dentistry
      Depositing User: Associate Prof. Dr. Noor Hayaty Abu Kasim
      Date Deposited: 11 Jan 2012 10:05
      Last Modified: 21 Oct 2014 08:30
      URI: http://eprints.um.edu.my/id/eprint/2479

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