Introduction: The eradication of the middle ear disease is mentioned as the fundamental principle of tympanoplasty. The presence of some factors related to patient or disease itself forces the physician to classify the chronic ear disease as high-risk perforations. The aim of this study was to present a tri-layer tympanoplasty technique and its otological and audiological outcomes in the ...

Abstract Introduction Tympanoplasty is the main treatment of mucosal type chronic suppurative otitis media. Objective The aim present study was to compare clinical outcomes in terms healing and audiological two groups. authors used single layer graft (perichondrium with cartilage island) one group double grafts island composite plus temporalis fascia) were second group. Methods Forty patients c...

In this paper, the energy absorption features of tri-layer explosive-welded deep-drawn cups subjected to quasi-static axial compressive loading are investigated numerically and experimentally. To produce the cups, tri-layer blanks composed of aluminum and stainless steel alloys were fabricated by an explosive-welding process and formed by a deep drawing setup. The quasi-static tests were carrie...

Objectives: To compare the results of tympanoplasty alone and tympanoplasty with cortical mastoidectomy in chronic suppurative otitis media (CSOM) patients with sclerotic bone in terms of graft uptake, perforation closure, improvement in hearing and disease eradication. Study Design: Retrospective study of patients at tertiary referral hospital. Method: 50 cases of non-cholesteatomatous chronic...

OBJECTIVE The aim of the study was to evaluate the results of the tympanoplasty in chronic otitis media in its functional aspect. METHODS We analysed and categorized 489 tympanoplasties using Wullstein classification. The operations were performed in the Otolaryngology and Laryngological Oncology Department of the University School of Medicine in Bydgoszcz, Poland, from 2004 to 2009. The grou...

During cerebellar development, anchoring centers form at the base of each fissure and remain fixed in place while the rest of the cerebellum grows outward. Cerebellar foliation has been extensively studied; yet, the mechanisms that control anchoring center initiation and position remain insufficiently understood. Here we show that a tri-layer model can predict surface wrinkling as a potential m...

Objective: To study the anatomical and hearing outcomes in endoscopic assisted atticotomy with cartilage tympanoplasty in patients with limited mastoid disease (involving attic, antrum). Material and methods: Study was conducted in a tertiary care referral hospital between July 2012 and April 2015. Total 28 patients with limited mastoid diseases were included in the study. All underwent endosco...

OBJECTIVE Candidates for revision tympanoplasty have experienced at least one failed attempt at repair of the tympanic membrane and are, therefore, at higher risk for subsequent repair failure. The adjunctive use of mastoidectomy with tympanoplasty in those patients with noncholesteatomatous chronic otitis media is often used to decrease the risk for subsequent failure. However, at this institu...

Conducting polymer actuators such as polypyrrole (PPy) microactuators are interesting candidates to drive autonomous microrobotic devices that require low weight and low power. Simple PPy tri-layer bending type microactuators that operate in air have been demonstrated previously but they lack individual control and had problems with short circuiting due to electrical connections. The lack of mi...

A combined tympanoplasty method, the mobile-bridge tympanoplasty, has been applied at the Clinic for Ear, Nose and Throat Diseases in Novi Sad since 1998. Mobile-bridge tympanoplasty is performed at our Clinic by applying Feldmann's procedure utilizing a microsurgical oscillating saw. It is a combination of closed and open techniques for surgical treatment of middle ear diseases. In addition to...