نتایج جستجو برای: canal wall down

تعداد نتایج: 406044  

Journal: :Nature Chemical Biology 2017

Journal: :Europe’s Journal of Psychology 2005

Journal: :JOURNAL OF JAPAN SOCIETY FOR HEAD AND NECK SURGERY 1998

2012
Young-Sil Yoo Yong-Bum Cho

OBJECTIVES The study was to compare the shaping ability of Reciproc (VDW) and WaveOne (Dentsply Maillefer) instruments compared with ProTaper, Profile and hand instrument during the preparation of simulated root canals. MATERIALS AND METHODS Five groups (n = 5) were established. Reciproc, WaveOne, ProTaper, Profile and K file (K-flexo file) were used to prepare the resin simulated canals. A s...

2017
Giovanni Ralli Giuseppe Nola Alberto Taglioni Michele Grasso Massimo Ralli

The overall number of day-case otologic surgery cases is increasing; however, there is limited experience about performing canal wall down tympanoplasty in patients with chronic suppurative otitis media with cholesteatoma in this setting. The objective of this study was to assess the success of this technique as daycase surgery in terms of results and complications over an 8-year follow up peri...

2014

The main function of the middle ear is well-known. It serves as a mechanical transformer, designed for transmission of acoustic energy from the external air to the cochlea fluids. In the absence of such energy transformer of the vibrational motion of air particles will be reflected at the on the border with the labyrinth fluid. The appearance of the corresponding mechanical amplification leads ...

Journal: :Nihon Jibiinkoka Gakkai kaiho 1994
M Urano

There are two types of cholesteatoma in children, congenital and acquired. The pathogenesis of each type is thought to be different. The pathogenesis of congenital cholesteatoma is thought to be the embryonic inclusion of squamous epithelium, whereas acquired cholesteatoma is thought to develop from various factors including recurrent otitis media and tubal insufficiency. We reviewed a series o...

Journal: :Kulak burun bogaz ihtisas dergisi : KBB = Journal of ear, nose, and throat 2009
Hatice Emir Zeynep Kizilkaya Kaptan Hakan Göçmen Erdal Samim

In chronic otitis media surgery, especially in cases with cholesteatoma, different complications can occur in the course of the operation or postoperatively. In our clinic, in one of the cases who had staged canal-wall down operation for otitis media with cholesteatoma, an iatrogenic 0.5x0.5 cm dural plate defect had occurred in tegmen tympani during the operation. In this article, we present a...

2009
Kai-Chieh Chan Shiang-Fu Huang Jen-Liang Su Che-Ming Wu

Glomus tympanicum, a hypervascular tumor in the middle ear, is usually suspected based on pulsatile tinnitus and retrotympanic reddish mass on otoscopic examination. These hallmarks may be masked by other middle ear diseases. Herein, we report an unusual case of the extensive glomus tympanicum masqueraded as chronic granulomatous otitis media, which was extirpated without preoperative embolizat...

ژورنال: مجله دندانپزشکی 2005
ضرابیان, محمد , علیقلی, مرضیه , لقمانی‌نژاد, نسترن ,

Statement of Problem: Root canal cleaning and elimination of the source of infection are the most important basis and the main requirements for successful root treatment since the main cause of failure in root treatment is the permeation of bacteria or their products into the periapical tissues. Nowadays, the newly designed and prcsented instruments for canal instrumentation can improve root tr...

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