Nanosecond infrared laser (NIRL) for cutting roots of human teeth: thermal effects and quality of cutting edges.

Autor: Friedrich RE; Oral and Craniomaxillofacial Surgery, Eppendorf University Hospital, University of Hamburg, Martinistr. 52, 20246, Hamburg, Germany., Kohlrusch FK; Oral and Craniomaxillofacial Surgery, Eppendorf University Hospital, University of Hamburg, Martinistr. 52, 20246, Hamburg, Germany., Ricken T; Section Mass Spectrometry and Proteomics, Center for Diagnostics, University Medical Center Hamburg-Eppendorf (UKE), Martinistr. 52, 20246, Hamburg, Germany., Grimm J; Section Mass Spectrometry and Proteomics, Center for Diagnostics, University Medical Center Hamburg-Eppendorf (UKE), Martinistr. 52, 20246, Hamburg, Germany., Gosau M; Oral and Craniomaxillofacial Surgery, Eppendorf University Hospital, University of Hamburg, Martinistr. 52, 20246, Hamburg, Germany., Hahn M; Institute of Osteology and Biomechanics, Eppendorf University Hospital, University of Hamburg, Martinistr. 52, 20246, Hamburg, Germany., von Kroge S; Institute of Osteology and Biomechanics, Eppendorf University Hospital, University of Hamburg, Martinistr. 52, 20246, Hamburg, Germany., Hahn J; Section Mass Spectrometry and Proteomics, Center for Diagnostics, University Medical Center Hamburg-Eppendorf (UKE), Martinistr. 52, 20246, Hamburg, Germany. ja.hahn@uke.de.
Jazyk: angličtina
Zdroj: Lasers in medical science [Lasers Med Sci] 2024 Aug 29; Vol. 39 (1), pp. 227. Date of Electronic Publication: 2024 Aug 29.
DOI: 10.1007/s10103-024-04173-1
Abstrakt: A nanosecond infrared laser (NIRL) was investigated in cutting dental roots. The focus of the investigation was defining the preparation accuracy and registration of thermal effects during laser application. Ten teeth were processed in the root area using a NIRL in several horizontal, parallel incisions to achieve tooth root ablation as in an apicoectomy. Temperature change was monitored during ablation and the quality of the cutting edges in the roots were studied by means of micro-CT, optical coherence tomography, and histology of decalcified and undecalcified specimens. NIRL produced clearly defined cut surfaces in dental hard tissues. The automated guidance of the laser beam created regular, narrow dentin defects that tapered in a V-shape towards the ablation plane. A biologically significant increase in the temperature of the object and its surroundings did not occur during the laser application. Thermal dentin damage was not detected in histological preparations of treated teeth. Defined areas of the tooth root may be ablated using a NIRL. For clinical translation of NIRL in apicoectomy, it would be necessary to increase energy delivered to hard tissue and develop beam application facilitating beam steering for oral treatment.
(© 2024. The Author(s).)
Databáze: MEDLINE
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