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A Journal on Dentistry and Maxillofacial Surgery


Official Journal of the Italian Society of Odontostomatology and Maxillofacial Surgery
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Minerva Stomatologica 2001 July-August;50(7-8):265-70

Copyright © 2001 EDIZIONI MINERVA MEDICA

language: Italian

Burrs breaking in oral surgery: a experimental study

Maglione M., Biasotto M., Scuor N., Schmid C.


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Background. This experimental work came out from clinic observations. The deal is to check the factors that can provoke the fracture of the more commonly in oral surgery used burrs, and then reduce the correlated risks to this event. Besides a fracture surface characterisation is done to point out the presence of production and/or stoking defects that can alter the structure.
Methods. Four batches of new surgical burrs (type Lindemann) were examined for a total of 40 samples. The first batch was used as control, the other three were submitted to 5, 10 and 20 sterilisation cycles respectively. Before each cycle disinfectant washing was done. All the samples were then mechanical tested (four point bending test) for the determination of the ultimate tension strength. The fracture surfaces were observed at SEM; a comparison with that of burrs broken during surgery operations was done.
Results. The new burrs did not show working defects. The washing and sterilisation processes did not provoke any corrosion attack.
Conclusions. No significant differences among the batches were detected from the mechanical tests as well as from micrographic observations.

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