Journal Article

Thermal image analysis of electrothermal debonding of ceramic brackets: an <i>in vitro</i> study

M Cummings, P Biagioni, P-J Lamey and DJ Burden

in The European Journal of Orthodontics

Published on behalf of European Orthodontic Society

Volume 21, issue 2, pages 111-118
Published in print April 1999 | ISSN: 0141-5387
Published online April 1999 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/21.2.111
Thermal image analysis of electrothermal debonding of ceramic brackets: an in vitro study

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This study used modern thermal imaging techniques to investigate the temperature rise induced at the pulpal wall during thermal debonding of ceramic brackets. Ceramic brackets were debonded from vertically sectioned premolar teeth using an electrothermal debonding unit. Ten teeth were debonded at the end of a single 3-second heating cycle. For a further group of 10 teeth, the bracket and heating element were left in contact with the tooth during the 3-second heating cycle and the 6-second cooling cycle. The average pulpal wall temperature increase for the teeth debonded at the end of the 3-second heating cycle was 16.8°C. When the heating element and bracket remained in contact with the tooth during the 6-second cooling cycle an average temperature increase of 45.6°C was recorded.

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Subjects: Restorative Dentistry and Orthodontics

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