Antimicrobial delivery has been advocated for guided tissue regeneration (GTR) or guided bone regeneration (GBR) therapies involving patients with aggressive or unresolved periodontitis/peri-implantitis. Electrospun chitosan membranes demonstrate several advantages over traditional GTR barrier membranes because they stimulate healing, mimic the topology of the extracellular matrix, and allow fo...

The aim of this study was to compare connective tissue and bacterial deposits on silicone sheets (SS) and expanded polytetrafluoroethylene membranes (ePTFE) used as barrier membranes in guided tissue regeneration (GTR) for periodontal treatment. Eighteen intrabony periodontal lesions from 18 patients were first surgically treated by GTR and either SS or ePTFE were used as barrier membranes. Fou...

OBJECTIVE This study was designed to evaluate the potential adjunctive benefits of platelet-rich plasma (PRP) when used with guided-tissue regeneration (GTR) and bioactive glass (BG) in the treatment of Class II furcation lesions. MATERIAL AND METHODS Bilateral Class II furcation lesions were surgically created and allowed to become chronic in the mandibular third premolars of 9 dogs. The def...

Angiocentric gliomas (AG) are exceedingly rare low-grade neoplasms which often present in the form of intractable epilepsy within younger patients. The current study extensively reviews all reported cases which were pathologically verified as AG in the literature to analyze clinical attributes and surgical outcomes of this neoplasm. There were 88 patients with AG reported in the literature cons...

The technique of guided tissue regeneration (GTR) has evolved over recent years in an attempt to achieve periodontal tissue regeneration by the use of a barrier membrane. However, there are significant limitations in the currently available membranes and overall outcomes may be limited. A degradable composite material was investigated as a potential GTR membrane material. Polylactic acid (PLA) ...

This study investigated, both histologically and histometrically, the efficacy of enamel matrix derived proteins (EMD) associated with bioactive glass (BG) and an absorbable membrane in the treatment of class III furcation defects in mongrel dogs. After surgical defect creation and chronification, the lesions were randomly divided into three groups according to the treatment employed: Test Grou...

The non-clock model is the standard model used in phylogenetic inference. As mentioned in one of the previous lectures, it can be considered as a branch-breaking model which allows the evolutionary rate to be different for each branch in the tree. Because of this, the non-clock tree model has a large number of free parameters, one for each branch in the tree. If there are n tips in the tree, th...

In this paper, we describe a new adaptive vector quantization (AVQ) algorithm designed for the coding of nonstationary sources. This new algorithm, generalized threshold replenishment (GTR), diiers from prior AVQ algorithms in that it features an explicit, online consideration of both rate and distortion. Rate-distortion cost criteria are used in both the determination of nearest-neighbor codew...

Regeneration of periodontal and alveolar ridge defects utilizing membranes is a well-established procedure in reconstructive surgery. Biomaterial characteristics and membrane design employed in guided tissue regeneration (GTR) techniques play an important role in good results. The purpose of this histologic experimental study in rats was to compare the use of two physical barriers in the osteop...

Objective: The most effective factor on malignant glioma (MGs) treatment affecting overall survival is the extent of resection. use sodium fluorescein (FL) staining in order to increase amount resection, applied more effectively and safely at lower doses with aid 560nm filtered surgical microscopes. Our aim was investigate effects FL MGs surgery gross total resection rate (GTR), duration surger...