Publications by authors named "Nelson Tatsunari Ishizaki"
Objective: The objective of this study was to investigate the rise in temperature in root surfaces during and immediately after diode laser irradiation, to observe morphological changes of root canal wall after irradiation, and to evaluate the apical leakage after irradiation and obturation in vitro.
Background Data: There have been very few reports on root canal treatment by 980-nm wavelength diode laser.
Methods: Sixty-six extracted human single-rooted teeth were instrumented up to size 60 K-file, and then randomly divided into three groups of 22 teeth each.
Objective: The purpose of the present study was to compare the healing process of rabbit's skin after the ablation of continuous wave CO(2) laser and pulsed CO(2) laser at low irradiances.
Background Data: Because of its advantages, the CO(2) laser has been viewed as an alternative to the traditional scalpel. Simple thermal models suggest that suitably short pulses of laser irradiation can leave a smaller thermal damaged zone to ablated tissue, which may lead to faster healing.
Objective: This study was performed to investigate the temperature rises on root surfaces and morphological changes on root canal walls of extracted human teeth after irradiation by erbium, chromium: yttrium, scandium, gallium, garnet (Er, Cr:YSGG) laser and to evaluate the efficiency in removing smear layer and debris from the prepared root canal walls in vitro.
Background Data: No report on Er, Cr:YSGG laser effects under various conditions and specific tips for endodontic treatments has been reported.
Methods: Sixty extracted human teeth with single and straight root were used in this study.
The purpose of this study was to examine the histopathological response of dental pulp tissue to enamel matrix derivative (EMD) used as a pulp capping material. Thirty-two teeth from two mongrel dogs were divided into four equal groups. One group served as controls, and the others were used for deep Class V cavity preparation followed by direct pulp capping with enamel matrix derivative.
View Article and Find Full Text PDFObjective: The purpose of this study was to investigate the morphological changes of bovine mandibular bone following Er,Cr:YSGG laser irradiation in different methods in vitro.
Background Data: Recently, an erbium, chromium/yttrium, scandium, garmet (Er,Cr:YSGG) laser device that emits a laser beam at the wavelength of 2.78 micro m was introduced.