Excimer lasers as a new tool for dentistry in root canal therapy.
Authors: Cavalieri S., Pini R., Salimbeni R., Vannini M., Barone R., Clauser C.
Autors Affiliation: CNR, Firenze, Italy
Abstract: Preliminary measurements of UV ablation thresholds of dental tissues were performed. A table shows the etching depth of healthy and infiltrated dentin and enamel as a function of laser fluence. The highly differentiated ablation thresholds of these tissues can result not only in a selective etching but in a mechanical guidance of the fiber along the canal. The measured values have been obtained for delivery of the laser light to the samples through a PCS 600-µm core optical fiber. An experimental investigation on tissue diagnostics has also been carried out. Autofluorescence spectra of healthy and necrotic dentin, enamel, and pulp were obtained by low-power excimer laser irradiation of teeth samples through an optical fiber, showing different spectral responses of the tissues under test.
KeyWords: BIOLOGICAL MATERIALS — Tissue; FLUORESCENCE; LASERS, EXCIMER — Medical Applications, DENTAL TISSUES; DIGEST OF PAPER; ROOT CANAL THERAPY; TISSUE DIAGNOSTICS; UV ABLATION THRESHOLDS, BIOMEDICAL ENGINEERINGDOI: 10000000000