نتایج جستجو برای: Hydroxyapatite coating, Implants

تعداد نتایج: 99641  

Journal: :iranian journal of pharmaceutical sciences 0
aliasghar behnamghader materials and energy research center, tehran, iran, davood sharifi department of clinical sciences, surgery and radiology section, faculty of veterinary medicine, university of tehran, tehran-iran, sarang soroori department of clinical sciences, surgery and radiology section, faculty of veterinary medicine, university of tehran, tehran-iran, narjes bagheri materials and energy research center, tehran, iran, ranna tolouei department of biomedical engineering, science and research campus, islamic azad university, tehran, iran, roghieh nemati materials and energy research center, tehran, iran, denis najjar

in this study, hydroxyapatite was coated on titanium substrates by plasma spraying process. a well-known porous and lamellar microstructure was found in the lateral and outer surface of coating. the phase composition was studied by xrd and the morphological and the microstructural aspects were investigated by scanning electron and optical microscopy. the hardness of coatings and substrates was ...

ژورنال: مجله دندانپزشکی 2001
فتحی, محمدحسین, موسوی, سیدبهروز, فیضی, قادر , مرتضوی, وجیه السادات ,

Bone osseointegration around dental implant can cause earlier stabilization and fixation of implant and reduce healing time. Hydroxyapatite coating can affect bone osseointegration and enhance its rates. The aim of this study was comparison of osseointegration between plasma sprayed hydroxyapatite coated and uncoated dental implants in cats. Four endodontic implants including, vitallium and two...

Journal: :The Journal of bone and joint surgery. British volume 1998
I Onsten A Nordqvist A S Carlsson J Besjakov S Shott

In a single-blind, randomised series of knee replacements in 116 patients, we used radiostereometric analysis (RSA) to measure micromotion in three types of tibial implant fixation for two years after knee replacement. We compared hydroxyapatite-augmented porous coating, porous coating, and cemented fixation of the same design of tibial component. At one to two years, porous-coated implants mig...

2011
Surajit Mistry Debabrata Kundu Someswar Datta Debabrata Basu Chidambaram Soundrapandian

BACKGROUND The use of different bioactive materials as coating on dental implant to restore tooth function is a growing trend in modern Dentistry. In the present study, hydroxyapatite and the bioactive glass-coated implants were evaluated for their behavior in osseous tissue following implantation in 14 patients. MATERIALS AND METHODS Bioactive glass and hydroxyapatite formulated and prepared...

Journal: :caspian journal of internal medicine 0
roxana family mehran solati-hashjin shahram namjoy nik ali nemati

background: titanium (ti) implants are commonly coated with hydroxyapatite (ha). however, ha has some disadvantages such as brittleness, low tensile strength and fracture toughness. it is desirable to combine the excellent mechanical properties of zro2 and the chemical inertness of al2o3 with respect to the purpose of this project which was coating ti implants with ha-zro2-al2o3 to modify the s...

Journal: :The International journal of oral & maxillofacial implants 2000
P T Proussaefs D N Tatakis J Lozada N Caplanis M D Rohrer

This case report presents a clinical, radiographic, and histologic evaluation of 2 non-adjacent, hydroxyapatite-coated, root-form implants retrieved from the maxillary canine area of a patient after 7 years in function. Clinical examination revealed immobile implants with no sign of pathosis. Radiographic examination indicated close proximity of the bone to the implant surface without evidence ...

Journal: :Journal of biomedical materials research 1995
H Caulier J P van der Waerden Y C Paquay J G Wolke W Kalk I Naert J A Jansen

The trabecular bone response to noncoated and fluorapatite (FA), hydroxyapatite (HA), and hydroxyapatite heat-treated (HAHT) plasma-sprayed coated implants was investigated in a goat animal model. Forty-eight cylindrical implants were inserted into the trabecular bone of the lateral and medial femoral condyles of twelve goats according to a split plot design. After an implantation period of twe...

Journal: :The West Indian medical journal 2005
A Simunek D Kopecka M Cierny I Krulichova

BACKGROUND The effect of hydroxyapatite coating of dental implants is controversial. The long-term fate of hydroxyapatite-coated implants has been the subject of some criticism. PURPOSE The aim of this retrospective study was to assess the clinical outcome of hydroxyapatite-coated cylindrical root-form endosseous Impladent dental implants (LASAK Ltd, Prague, Czech Republic) during a six-year ...

Ali Nemati, Mehran Solati-Hashjin, Roxana Family, Shahram Namjoy Nik,

Background: Titanium (Ti) implants are commonly coated with hydroxyapatite (HA). However, HA has some disadvantages such as brittleness, low tensile strength and fracture toughness. It is desirable to combine the excellent mechanical properties of ZrO2 and the chemical inertness of Al2O3 with respect to the purpose of this project which was coating Ti implants with HA-ZrO2-Al2O3 to modify the s...

Journal: :dental research journal 0
mehdi mehdikhani-nahrkhalaji mohammad hossein fathi vajihesadat mortazavi sayed behrouz mousavi ali akhavan abbas haghighat

poly (lactide-co-glycolide)/bioactive glass/hydroxyapatite (pbgha) and poly (lactide-co-glycolide)/ bioactive glass (pbg) nanocomposite coatings with bone. materials and methods: sol-gel derived 58s bioactive glass nanoparticles, 50/50 wt% poly (lactic acid)/poly (glycolic acid) and hydroxyapatite nanoparticles were used to prepare the coatings. the nanocomposite coatings were characterized by ...

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