This research evaluated the bone repair process in surgical defects created on the parietal bones of diabetic rabbits using the guided bone regeneration technique to observe the effects of alloxan in the induction of diabetes mellitus. Twenty-four adult rabbits were divided into three study groups: control (C), diabetic (D) and diabetic associated to polytetrafluoroethylene (PTFE) membrane (D-P...

Objectives: There are an increasing number of reports concerning mitral valve repair by reconstruction of the chordae tendinae with the use of expanded polytetrafluoroethylene (PTFE) sutures. However, little information is available about the extended application or results of this technique for extended prolapse of bilateral mitral leaflets, which is considered to be difficult to repair. Metho...

A study of nerve regeneration through a 1cm defect in the peroneal component of the sciatic nerve was performed on sixteen rabbits. Either silicone or polytetrafluoroethylene (PTFE) tubes or nerve graft were used to bridge the defect and the opposite limb was not operated upon. The rabbits that underwent nerve grafting had favourable findings. In the PTFE group, a nerve-like structure was seen ...

BACKGROUND While lightweight (LW) polypropylene (PP) meshes are been used for hernia repair, new prosthetic meshes also of low-density and with large pores have recently been introduced composed of other polymer materials. This study compares the behavior in the short-term of two macroporous LW prosthetic materials, PP and non-expanded PTFE. METHODS Partial defects were created in the lateral...

ObjectiveThere is discordance between reviews comparing eversion endarterectomy (EvE) with conventional carotid (CEA) mostly because under this term various “closure” techniques are included, from direct closure to a wide spectrum of patches different materials.Data sourcesMEDLINE (via PubMed) and SCOPUS.Review methodsThis was systematic review the Medline SCOPUS databases for randomised contro...

normal 0 false false false en-us x-none ar-sa background: considering the presence of squamous epithelial cells and fibroblasts in the tympanic membrane (tm), topical estrogen application may influence the repair of tm perforations. therefore, this study was designed to investigate the healing effect of topical estrogen on chronic tm perforations and improvement in hearing threshold. materials ...

In this paper, many techniques are suggested and analyses for rectangular microstrip antenna (RMSA) operating in S-band for 3 GHz as center frequency. Using transmission-line model, analysis was done for the behavior of the antenna for different types of substrates, modified patch geometries and shifted feeding point, operating at S-band (2 to 4GHz). This design of RMSA is made to several diele...

PURPOSE This work evaluated the osteoconductive properties of autogenous demineralized dentin matrix (ADDM) on surgical bone defects in the parietal bone of rabbits, using the guided bone regeneration technique and polytetrafluoroethylene (PTFE) membrane. MATERIALS AND METHODS Surgical bone defects were created in 24 adult rabbits and repaired with either ADDM and PTFE (experimental group) or...

INTRODUCTION For patients with infra-inguinal autologous vein bypass graft occlusion, conventional open surgical repair or endovascular treatment (EVT) for native vessel occlusion have generally been performed. REPORT A 73 year old female with non-healing ulcer and gangrene of the left lower leg was diagnosed as having infra-inguinal autologous saphenous vein graft occlusion. In this case, su...