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Article
The ball mill as a means of investigating the mechanical failure of dental materials
Journal of Dentistry (1996)
  • Noor Hayaty Abu Kasim, Abu Kasim N.H.
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.

Keywords
  • ball mill; fatigue; composites; orthodontics; COMPOSITE; 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; ROLLING BALL; BALL MILL;
Publication Date
January, 1996
Citation Information
Noor Hayaty Abu Kasim. "The ball mill as a means of investigating the mechanical failure of dental materials" Journal of Dentistry Vol. 24 Iss. 1-2 (1996)
Available at: http://works.bepress.com/abukasim_nh/34/