Periodontal plastic surgical techniques have evolved to meet the demands of today's dental patient. Free gingival grafts (FGGs), pedicle flaps, subepithelial connective tissue grafts (SCTGs), acellular dermal matrix (ADM) grafts, and guided tissue regeneration (GTR) have all been used to cover denuded root surfaces. FGGs have demonstrated inconsistent results. Pedicle flaps have provided consis...

We examined recurrence after gross total resection (GTR) or subtotal (STR) at St. Michael’s Hospital, Toronto, of 181 cases atypical meningioma (WHO grade II). In the entire group, Kaplan-Meier survival curves showed that combined necrosis and brain invasion was feature associated with worst outcome, followed in order by necrosis, histological variants (clear cell, rhabdoid, chordoid), high mit...

This study investigates the addition of ground tire rubber (GTR) into virgin polyamide 6 (PA6) to produce thermoplastic elastomer (TPE) blends. In particular, a wide range GTR concentration (0–100% wt.) was possible by using simple dry blending technique materials in powder form followed compression molding. The molded samples were characterized terms morphological (scanning electron microscopy...

Ectopic recurrence of craniopharyngioma is extremely rare. Two mechanisms have been proposed to explain this phenomenon: direct implantation along the previous surgical tract and dissemination via cerebrospinal fluid (CSF). We present a case of ectopic recurrence along the surgical route after transcranial gross total resection (GTR) of primary tumor. Cystic tumor seems to be a risk factor of e...

background and aims. a combination of guided tissue regeneration (gtr), bovine porous bone mineral (bpbm), and platelet rich plasma has been already applied for the regeneration of intrabony defects. the aim of this study was to determine the role of plasma rich in growth factor (prgf) alone in the periodontal regeneration of intrabony defects in humans as compared with bpbm/gtr technique. mate...

Inference of evolutionary trees and rates from biological sequences is commonly performed using models of character change that incorporate rate variation across sites. Though an incorrect proof of the identifiability of the GTR+Γ+I model has been published, very little has been rigorously established concerning the identifiability of the models currently in common use in data analysis. Here we...

The coupling constants GKNΛ and GKNΣ are obtained from the GoldbergerTreiman relation in the strange channel with chiral symmetry breaking taken into account. The results, GKNΛ = −12.3±1.2 and GKNΣ = 5.5±.5 come close to the SU(3) values. The Kaon-Baryon coupling constants GKNΛ and GKNΣ are essential ingredients in the study of Kaon-Nucleon scattering or of the strangeness content of the nucleo...