Avtor/Urednik		Gašpirc, Boris
Naslov		Struktura in prepustnost zobnega cementa po obsevanju z Nd:Yag in Er:Yag laserjem
Tip		monografija
Kraj izdaje		Ljubljana
Založnik		Medicinska fakulteta
Leto izdaje		1997
Obseg		str. 78
Jezik		slo
Abstrakt		Nd:YAG laser is used as an adjunctive tool in periodontal therapy. High power (P>3W) Nd:YAG laser irradiation alters morphology, biocompatibility and chemical structure of root surface. There are no published data about effect of laser irradiation on root surface permeability. Furthermore, there are only a few data about morphological and chemical changes of root surfaces after laser irradiation. The aim of this study was to answer the question whether Nd:YAG or Er:YAG laser alters morphology, chemical structure or permeability of root cementum. To determine morphological alterations we examined scanning electronic microphotographs of lased and non-lased root surfaces. To determine chemical alterations we examined and analyzed IR spectra of lased and non-lased root surface samples. To determine permeability alterations for water soluble spin lable we used one dimensional EPR imaging. In Nd:YAG laser study we found morphological alterations on lased root surfaces ranging from cracks, using 0.5 W of power, to craters, using I .5 W of power. The intensity of the Amide II and III peaks decreased in lased groups using 1.0 and I.SW of power. The permeability of root surface increased greatly in group lased with laser beam using 1.SW of power. Increase in power of laser beam to 1.SW failed to further increase the permeability. In Er:YAG laser study we found large morphological alterations on lased root surfaces. Er:YAG removed the entire cementum layer. Exposed dentin tubules were observed on scanning electronic microphotographs in all lased groups. (Abstract truncated at 2000 characters).
Deskriptorji		PERIODONTAL POCKET LASER SURGERY DENTAL CEMENTUM TOOTH ROOT TOOTH PERMEABILITY NEODYMIUM ERBIUM MICROSCOPY, ELECTRON SPIN LABELS ELECTRON SPIN RESONANCE SPECTROSCOPY