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Erschienen in: Clinical Oral Investigations 4/2008

01.12.2008 | Original Article

Cavity size difference after caries removal by a fluorescence-controlled Er:YAG laser and by conventional bur treatment

verfasst von: J. Eberhard, K. Bode, J. Hedderich, S. Jepsen

Erschienen in: Clinical Oral Investigations | Ausgabe 4/2008

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Abstract

To determine the extensions of cavities prepared conventionally by bur or by a fluorescence-controlled Er:YAG laser. Sixty-five human teeth with dentine caries were bisected through the caries lesion and were treated by a fluorescence-controlled Er:YAG laser in a non-contact or a contact mode or by a rotary bur. The specimens were subjected to histological staining and a quantitative evaluation of cavity area (mm2) by computer-assisted alignment. Data were tested for statistical significant differences by the Wilcoxon test (p < 0.05). Twenty-three out of 29 cavities were smaller after caries removal with the non-contact laser compared to the bur. For a threshold level of seven, a cavity size difference of 1.63 (1.86) mm2 was calculated compared to a cavity size difference of 5.35 (5.05) mm2 after bur excavation. The differences were statistically significant (p = 0.029). No significant differences were observed between the cavity size differences after excavation with the non-contact or the contact laser handpiece. Residual bacteria within the cavity floor were found only in low numbers after all treatments. The present in vitro study indicates that caries removal by a fluorescence-controlled Er:YAG laser using a threshold level of seven resulted in less dentine loss than preparations by a bur.
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Metadaten
Titel
Cavity size difference after caries removal by a fluorescence-controlled Er:YAG laser and by conventional bur treatment
verfasst von
J. Eberhard
K. Bode
J. Hedderich
S. Jepsen
Publikationsdatum
01.12.2008
Verlag
Springer-Verlag
Erschienen in
Clinical Oral Investigations / Ausgabe 4/2008
Print ISSN: 1432-6981
Elektronische ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-008-0203-y

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