Objective: The purpose of this in vitro study is that NiTi esthetic arch wires are preferred to match estheticbraces; but the presence coating layer greatly affect friction during sliding mechanics.The aims were evaluate load deflection and influence surface roughness with thecoating material types on frictional force coated nickel titanium wires.Method: sample consisted 90 segments uncoated Ni...

introduction: the persian squirrel (sciurus anomalus) is the only member of the sciuridae family found in the middle east. some people maintain them as pets, thus their referrals to veterinary hospitals has been increased recently. several morphological studies have been carried out mainly on the arch of aorta and its branches in common rodents, small mammals, and domestic animals but there are...

We report a case of a 32-week-gestation male who presented initially with symptoms suggestive of an interrupted aortic arch. The absence of a VSD prompted further investigations, including a CT angiogram, which revealed that he had an extensive thrombus in his aorta. He underwent a successful aortic thrombectomy with arch repair on cardiopulmonary bypass support. In view of the extensive thromb...

Jury: Prof. dr. ir. Willy Sansen (Chairman) Prof. dr. ir. arch. Han Verschure Prof. dr. ir. arch Frank De Troyer Prof. dr. arch. Ana María de la Peña (Higher Polytechnical Institute J.A.Echeverría, Havana) Prof. dr. arch. Hans Rosenlund (University of Lund) Prof. dr. arch. Luc Verpoest dr. ir. Bert Blocken Prof. dr. ir. arch Jan Carmeliet Prof. dr. ir. arch. André De Herde (Université Catholiqu...

Background: There exists few scientific reports on the quality of digitally reproduced dental arches, even though digital devices have been used in dentistry for many years. This study assesses accuracy standard arch model reproduction using both traditional and methods. Methods: The full upper by physical models obtained through methods was compared: gypsum (SGM) printed from data an intraoral...

In recent years, the importance of economical considerations in the field of dam engineering has motivated many researchers to propose new methods for minimizing the cost of dames and in particular arch dams. This paper presents a method for shape optimization of double curvature arch dams corresponding to minimum construction cost while satisfying different constraints such as natural frequenc...

background: the purpose of this study was to determine changes in sole arch index and their effects on non-contact lower-extremity injury rates among male karateka. materials and methods: forty-five male karateka with knee or ankle injuries were chosen from 288 male athletes attending 6 athletic clubs in kerman-iran. injury-related data were collected via a data recording sheet and sole arch in...

OBJECTIVE To investigate the maxillary and mandibular anterior crown width/height ratio and its relation to various arch perimeters, arch length, and arch width (intercanine, interpremolar, and intermolar) groups. MATERIALS AND METHODS The calculated sample size was 128 subjects. The crown width/height, arch length, arch perimeter, and arch width of the maxilla and mandible were obtained via ...

objective: implants are being used in orthodontics as a reliable mode of anchorage. among other factors, the cortical bone thickness plays a major role in determining the stability of these implants. the objective of this study was to study the relationship of various arch forms and the cortical bone thickness and to determine if the cortical bone thickness varies between various arch forms. th...