Research Papers: General

Ceramic bracket debonding with Tm:fiber laser

[+] Author Affiliations
İrem Demirkan, Ayşe Sena Kabaş Sarp, Murat Gülsoy

Boğaziçi University, Institute of Biomedical Engineering, Kandilli Kampüs, Çengelköy, İstanbul 34684, Turkey

J. Biomed. Opt. 21(6), 065007 (Jun 27, 2016). doi:10.1117/1.JBO.21.6.065007
History: Received March 25, 2016; Accepted June 3, 2016
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Abstract.  Lasers have the potential for reducing the required debonding force and can prevent the mechanical damage given to the enamel surface as a result of conventional debonding procedure. However, excessive thermal effects limit the use of lasers for debonding purposes. The aim of this study was to investigate the optimal parameters of 1940-nm Tm:fiber laser for debonding ceramic brackets. Pulling force and intrapulpal temperature measurements were done during laser irradiation simultaneously. A laser beam was delivered in two different modes: scanning the fiber tip on the bracket surface with a Z shape movement or direct application of the fiber tip at one point in the center of the bracket. Results showed that debonding force could be decreased significantly compared to the control samples, in which brackets were debonded by only mechanical force. Intrapulpal temperature was kept equal or under the 5.5°C threshold value of probable thermal damage to pulp. Scanning was found to have no extra contribution to the process. It was concluded that using 1940-nm Tm:fiber laser would facilitate the debonding of ceramic brackets and can be proposed as a promising debonding tool with all the advantageous aspects of fiber lasers.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

İrem Demirkan ; Ayşe Sena Kabaş Sarp and Murat Gülsoy
"Ceramic bracket debonding with Tm:fiber laser", J. Biomed. Opt. 21(6), 065007 (Jun 27, 2016). ; http://dx.doi.org/10.1117/1.JBO.21.6.065007


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