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Structural changes in dentin induced by high energy, continuous wave carbon dioxide laser
Author(s) -
Shariati Shervin,
Pogrel M. Anthony,
Marshall Grayson W.,
White Joel M.
Publication year - 1993
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.1900130508
Subject(s) - charring , carbon dioxide laser , dentin , materials science , scanning electron microscope , carbon dioxide , porosity , composite material , laser , continuous wave , optical microscope , electron microscope , layer (electronics) , chemistry , optics , laser surgery , organic chemistry , physics
The effect of a continuous wave carbon dioxide laser on dentin was observed as a function of power density and exposure time utilizing a wet scanning electron microscope. Visible charring occurred for all conditions studied. Surface cratering and flaking were followed by melting of the dentin. Melting resulted in a porous layer or porous globules of resolidified material and partial sealing of the tubules. Beneath the melted zone is an area of altered dentin where the tubules appear to be filled by solidification of the melted dentin. © 1993 Wiley‐Liss, Inc.