Xenografts have been used extensively, either alone or in combination with autogenous bone, in sinus floor elevation techniques. However, controversy exists regarding the need to cover the lateral osteotomy site with a membrane. Also, the healing period before loading remains undefined when machined-surface implants are placed. Twenty-nine patients showing reduced bone volume in the posterior m...

Background The treatment of furcation area defects remained as a challenging issue in periodontal treatments. Regeneration treatment of furcation defects is the most discussed periodontal treatment. Although not completely hopeless in prognosis, the presence of the furcation involvement significantly increases the chance of tooth loss. The current research was conductedeto compare theeadditive ...

In this study, we fabricated glial cell-line derived neurotrophic factor (GDNF)-loaded microspheres, then seeded the microspheres in gelatin-methacrylamide hydrogel, which was finally integrated with the commercial bilayer collagen membrane (Bio-Gide(®)). The novel composite of nerve conduit was employed to bridge a 10 mm long sciatic nerve defect in a rat. GDNF-loaded gelatin microspheres had ...

OBJECTIVE The purpose of our study was to determine the effectiveness of cartilage repair utilizing 1-step surgery with bone marrow aspirate concentrate (BMAC) and a collagen I/III matrix (Chondro-Gide, Geistlich, Wolhusen, Switzerland). MATERIALS AND METHODS We prospectively followed up for 2 years 15 patients (mean age, 48 years) who were operated for grade IV cartilage lesions of the knee....

OBJECTIVE The aim of this study was to evaluate the regenerative potential of cell-laden and cell-free collagen matrices in comparison to microfracture treatment applied to full-thickness chondral defects in an ovine model. METHODS Animals (n = 30) were randomized into 5 treatment groups, and 7-mm full-cartilage-thickness defects were set at the trochlea and medial condyle of both knee joints...

Since its creation in the season of 1641–42, Pierre Corneille’s martyr-play Polyeucte has generated widely di·ering interpretations, more so than any other work by the playwright. The debate that first surfaced among Corneille’s contemporaries, focusing on the orthodoxy of the tragedy’s central theme of martyrdom, still continues to divide critical opinion. Thus, Andr‹ e Gide confidently assert...

OBJECTIVE To collect and analyze the 2-year follow-up clinical and MRI results of patients treated with an arthroscopic technique of collagen membrane-based meniscus repair. DESIGN 53 consecutive patients with combined (horizontal and radial or longitudinal component) and complex meniscal tears (tear extended through avascular zones or/and composed with two or more morphological tear pattern)...

les formes narratives dans les œuvres et dans les différents récits sont capables de transmettre des significations variées. le narrateur, pour sa part, met en valeur les formes discursives parfois très diverses pour influencer son narrataire voire son lecteur. le prométhée mal enchaîné est une des œuvres d'andré gide où les narrateurs jouent tour à tour des rôles très intéressants et seul...