نتایج جستجو برای: rotational abrasion test

تعداد نتایج: 844310  

2016
M Winny L Grethe L Maegel D Jonigk T Lippmann J Klempnauer D Poehnert

BACKGROUND Meshes implanted intraperitoneally are known to cause adhesions potentially resulting in complications such as chronic pain, enterocutaneous fistula, or mesh infection. This study introduces a model for investigation of intestine-to-mesh adhesions and evaluates as to whether missing of visceral peritoneum is causative. METHODS In 18 rats, rectangular 1.5 x 2 cm patches of an uncoat...

2018
Enver Yetkiner Mutlu Özcan

2010
Scott Fraser

CLINICAL QUESTION What is the best treatment for traumatic corneal abrasion? RESULTS Eye patching does not reduce pain in patients with corneal abrasions. Topical diclofenac does reduce pain in patients with corneal abrasions IMPLEMENTATION Pitfalls to avoid when treating abrasions: Treatment of small abrasions Treatment of larger abrasions When to refer for specialist treatment.

2007
Akihiro Iijima Keiichi Sato Kiyoko Yano Hiroshi Tago Masahiko Kato Hirokazu Kimura Naoki Furuta

Abrasion dusts from three types of commercially available non-steel brake pads were generated by a brake dynamometer at disk temperatures of 200, 300 and 400 1C. The number concentration of the abrasion dusts and their aerodynamic diameters (Dp) were measured by using an aerodynamic particle sizer (APS) spectrometer with high temporal and size resolution. Simultaneously, the abrasion dusts were...

2016
Daniel Thomas Cavanaugh Alan Russell Frank Peters

Metal matrix composites have been widely studied in terms of abrasion resistance, but a particular material system may behave differently as particle size, morphology, composition, and distribution of the hardening phase varies. The purpose of this thesis was to understand the mechanical and microstructural effects of combining titanium carbide with 431 series stainless steel to create a unique...

Journal: :Operative dentistry 2003
Hans S Malmström Yvette Chaves Mark E Moss

It has been suggested that patients should accept the use of the air abrasion technique over the conventional handpiece due to the reduced need for anesthesia. Technologies for both air abrasion and the conventional rotary handpiece have, in recent decades, seen major improvements, but there are no recent scientific publications that evaluate the patient's preference for these two technologies ...

ابراهیم, حدیث, ایزدی, مژگان, فروغی, سمیه, مقاره عابد, احمد, یقینی, جابر,

Introduction: Toothpaste should have the most plaque removal efficacy with the least abrasiveness. The aim of this study was to evaluate enamel abrasion induced by four toothpaste types. Methods: In this in vitro experimental study, 24 dental samples were divided into four groups of six. The initial surface roughness was measured with the roughness measuring device. Regarding abrasion test with...

Journal: :The Journal of prosthetic dentistry 2011
Hong-Joo Kim Hyun-Pil Lim Yeong-Joon Park Mong-Sook Vang

STATEMENT OF PROBLEM Various surface treatments of zirconia have been recommended for veneering ceramics. However, it has not been determined which of these treatments produces the highest bond strength. PURPOSE This study examined the effects of various surface treatments on the shear bond strength of zirconia and veneering ceramic. MATERIAL AND METHODS Square-shaped (5 × 10 × 10 mm) zirco...

Journal: :Journal of dental research 1977
J C Roberts J M Powers R G Craig

The objective of this study was to compare the abrasion resistance, resistance to penetration, and mode of deformation of a filled (A*) and two unfilled (Bt and C$) pit and fissure sealants. Samples were mixed following manufacturers' instructions and stored at 37 C for 24 hours before testing. Five cylindrical samples of each sealant were abraded on silicon carbide paper§ with continuous flush...

2003
U. Dornbusch D. A. Robinson R.B.G. Williams C. A. Moses

The results are described of ongoing field and laboratory experiments to estimate losses from shingle beaches due to abrasion. Field abrasion experiments of two exotic lithologies (quartzite and limestone) used as tracers on two flint shingle beaches at Telscombe and Saltdean in East Sussex, UK, have been carried out over 23 months, resulting in 985 weight loss measurements. Relationships betwe...

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