Bone healing of the sheep tibia shaft after carbon dioxide laser osteotomy : histological results

Kuttenberger, Johannes J. and Waibel, Alessa and Stübinger, Stefan and Werner, Martin and Klasing, Manfred and Ivanenko, Mikhail and Hering, Peter and von Rechenberg, Brigitte and Sader, Robert and Zeilhofer, Hans-Florian. (2010) Bone healing of the sheep tibia shaft after carbon dioxide laser osteotomy : histological results. Lasers in medical science, Vol. 25, H. 2. pp. 239-249.

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Official URL: http://edoc.unibas.ch/dok/A6006518

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The aim of the study was to compare the histological results after complete osteotomies of the sheep tibia using either the prototype carbon dioxide (CO(2)) laser osteotome 'OsteoLAS' (n = 12) or an oscillating saw (n = 12). The laser parameters were as follows: wavelength 10.6 microm; energy of laser pulses 75-85 mJ; pulse duration 80 mus; pulse repetition rate 200 Hz; spot diameter 460 mum (1/e(2) level); radiant exposure 45-51 J/cm(2); peak irradiance 0.56-0.64 MW/cm(2). Both groups were divided into two subgroups (n = 6), and the animals were killed after 4 weeks or 12 weeks, respectively. Light and fluorescence microscopy with semiquantitative analysis and histomorphometry were performed to compare bone healing. Charring-free laser osteotomies were possible up to a depth of 20 mm with the short-pulsed CO(2) laser. The laser, however, required a significantly longer time to perform, and a wedge-shaped gap was present on the cis-cortex. After 4 weeks the osteotomy gaps were almost unchanged in both groups and filled with connective tissue. After 12 weeks the gaps were filled with newly formed bone in both groups. Primary gap healing was predominant in the laser group and longitudinal cortical remodelling in the control group. On a cellular level, no fundamental differences were observed for early and late stages of bone healing. Further research has to be focussed on improving the CO(2) laser ostetome in order to reduce the long duration of the laser osteotomy and the necessity of creating a wedge-shaped cut in thick bones.
Faculties and Departments:03 Faculty of Medicine > Bereich Operative Fächer (Klinik) > Kopfbereich > Kiefer- und Gesichtschirurgie (Zeilhofer)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Operative Fächer (Klinik) > Kopfbereich > Kiefer- und Gesichtschirurgie (Zeilhofer)
UniBasel Contributors:Zeilhofer, Hans-Florian and Kuttenberger, Johannes Josef
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:19 Jul 2013 07:43
Deposited On:19 Jul 2013 07:35

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