Comparison of osseointegration between laser-etched and magnesium-incorporated oxidized implants in the rabbit femur.

Purpose: To compare the osseointegration of a laser-etched (LE) implant with a magnesium-incorporated oxidized (MgO) implant, evaluating their ability to enhance the bond strength between a titanium substrate and rabbit femur.

Materials And Methods: Two type of dental implants, LE (test, commercially pure [CP] titanium grade 4) and MgO (control, CP titanium grade 4) (length, 8 mm; diameter, 3.3 mm), were evaluated for the surface characteristics using a field emission scanning electron microscope (FE-SEM), an energy dispersive spectrometer (EDS), and an optical three-dimensional profiling system.

Comparison of removal torques for laser-treated titanium implants with anodized implants.

Purpose: It is difficult to draw any firm conclusions regarding possible differences in implant surface performance in a clinical situation. The purpose of this study was to compare the removal torques of laser-treated (LT) surface of dental implants with TiUnite, which has porous rough anodized surface, evaluating their ability to enhance the bond strength between a titanium substrate and rabbit femur.

Method: Two types of dental implants, LT (test, CP titanium grade 4) and commercial porous TiUnite (control, CP titanium grade 4) implants (length, 7 mm; diameter, 3.

Caffeine-induced neuronal death in neonatal rat brain and cortical cell cultures.

We examined the potential neurotoxicity of caffeine and. Intraperitoneal administration of caffeine (50 mg/kg, 3 times a day) produced neuronal death in various brain areas of neonatal rats 24 h later. Caffeine at doses > 300 microM was also neurotoxic in murine cortical cell cultures.