Introduction: Corticotomy-facilitated orthodontics provides a means for rapidly moving teeth purportedly with little damaging effects to the periodontium and with greatly reduced treatment time. The aim of this study was to enhance the orthodontic tooth movement by reducing the cortical bone layer (resistant to bone re-sorption relative to spongious bone) following Erbium, Chromium doped Yttriu...

Microleakage following root-end resections has a direct influence on the outcome of surgical endodontic procedures. This study compared the microleakage after root-end resections performed by the Er, Cr: YSGG laser or carbide burs with or without the placement of MTA, and evaluated the presence of microcracks and gaps at the interface of GP/MTA and the canal walls. Ninety single-rooted teeth we...

MINIMALLY INVASIVE SURGERY (MIS) USING THE ERBIUM, CHROMIUM: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser (Waterlase MD, Biolase, Irvine, CA) to treat moderate to advanced periodontal disease is presented as an alternative to conventional therapies. To date, there are few short- or long-term studies to demonstrate the effects of this laser in treating and maintaining periodontal health. E...

BACKGROUND Implant bed preparation with laser is taken into consideration owing to the increased interest in use of lasers in hard tissue surgery. The purpose of this study is to determine the deviations in the position and inclination between the planned and prepared implant beds with Erbium, Chromium doped Yttrium Scandium Gallium Garnet (Er,Cr:YSGG) laser using stereolithographic (SLA) surgi...

CATALINA IULIA SAVEANU1*, OANA DRAGOS2, VLAD DANILA3, CORINA CHEPTEA4 1 Grigore T. PopaUniversity of Medicine and Pharmacy, Faculty of Dental Medicine, Preventive Dentistry Department, 16, Universitatii Str., 700115, Iasi, Romania 2National Institute of Research-Development for Technical Physics – IFT Iasi 3 Grigore T. Popa University of Medicine and Pharmacy, Faculty of Dental Medicine, Dento ...

An integrated geochemical analysis of the wellexposed Pine Creek, California tungsten skarn deposit has been undertaken to evaluate changes in chemical gradients across various lithologies. Thermodynamic calculations using available experimental and thermodynamic data allow limits to be assigned to the activities of important chemical components in the metasomatic environment. Quantifiable chan...

Metasedimentary rocks, a major component of the continental crust, are abundant within ultra-high pressure (UHP) metamorphic terranes related to continental collisions. The presence of diamond, coesite, and relics of decompressed minerals in these rocks suggests that they were subducted to a depth of more than 150–250 km. Reconnaissance experiments at 9–12 GPa and 1000–1300 C on compositions co...

Shock wave Hugoniot data have been obtained for almandine-garnet of composition (Fe•.7•, Mgo.14, Ca•.•, Mno.•) Al,iaO• to pressures of >650 kb. The Hugoniot data indicate the onset of a high-pressure phase at 195 ñ 20 kb. Equation-of-state systematics and crystal chemical data (stemming largely from analog compounds) suggest that the high-pressure phase occurs in an 'ilmenitelike' structure wit...

Outgassing of helium and argon and the isotope ratio distribution of helium isotopes in basalts are some of the most important geochemical constraints on mantle structure and evolution, but their interpretation in terms of mantle processes is ambiguous and controversial. Here, the evolution of these isotopes and their radiogenic parent isotopes of U, Th and K are studied using a numerical model...

Laser technologies for benign prostatic hyperplasia (BPH) have steadily replaced transurethral resection of the prostate (TURP) over the past 10 yr in many parts of the world [1]. For example, the rate of TURP performance declined 47.6% in a US Medicare population between 2000 and 2008 [2]. Techniques for laser prostatectomy used in each country vary, with enucleation preferred in some countrie...