| 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 for 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. |
| Authors | N H Abu Kasim, D T Millett, J F McCabe
(Affiliation: Dental Materials Science Unit, Dental School, Newcastle upon Tyne, UK.)
|
| Journal | Journal of dentistry
(J Dent)
1996 Jan-Mar
Vol. 24
Issue 1-2
Pg. 117-24
ISSN: 0300-5712 ENGLAND |
| PMID | 8636482
(Publication Type: Comparative Study, Journal Article)
|
| Chemical References |
- Composite Resins
- Dental Materials
- Dentin-Bonding Agents
- Glass Ionomer Cements
- Polycarboxylate Cement
- Resin Cements
- P50 composite resin
- Right-On
- Stainless Steel
- Magnesium Oxide
- Zinc Oxide
- Bisphenol A-Glycidyl Methacrylate
- Ketac-cem
|
| Topics |
- Bisphenol A-Glycidyl Methacrylate
(chemistry)
- Composite Resins
(chemistry)
- Dental Materials
(chemistry)
- Dentin-Bonding Agents
(chemistry)
- Equipment Design
- Forecasting
- Glass Ionomer Cements
(chemistry)
- Magnesium Oxide
(chemistry)
- Materials Testing
(instrumentation)
- Orthodontic Appliances
- Orthodontic Brackets
- Polycarboxylate Cement
(chemistry)
- Reproducibility of Results
- Resin Cements
- Rotation
- Stainless Steel
(chemistry)
- Stress, Mechanical
- Surface Properties
- Temperature
- Zinc Oxide
(chemistry)
|
