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Calcium hydroxiapatite

Natalija Luković, Obrad Zelić, Sasa Cakić, Vanja Petrović
INTRODUCTION: The primary goal of bone regeneration procedures with application of various regenerative biologic agents and biomaterials is to facilitate the formation of periodontal tissues lost as a result of periodontitis. OBJECTIVE: The aim of the study was to compare clinical outcome of the guided tissue regeneration (GTR) treatment with the use of beta-tricalcium phosphate and with bovine bone matrix in human deep intra-osseous defects. METHODS: Twenty-one systemically healthy subjects with moderate to advanced periodontitis, between 30 and 56 years of age, 11 females and 10 males, were selected...
November 2009: Srpski Arhiv za Celokupno Lekarstvo
Rafael S Faeda, Hewerson S Tavares, Rafael Sartori, Antonio C Guastaldi, Elcio Marcantonio
PURPOSE: Considering the potential of the association between laser ablation and smaller scale hydroxyapatite (HA) coatings to create a stable and bioactive surface on titanium dental implants, the aim of the present study was to determine, by the removal torque test, the effects of a surface treatment created by laser-ablation (Nd:YAG) and, later, thin deposition of HA particles by a chemical process, compared to implants with only laser-ablation and implants with machined surfaces. MATERIALS AND METHODS: Forty-eight rabbits received 1 implant by tibia of the following surfaces: machined surface (MS), laser-modified surface (LMS), and biomimetic hydroxiapatite coated surface (HA)...
August 2009: Journal of Oral and Maxillofacial Surgery
Sergio L Viana, João L Fernandes, Pablo P De Araújo Coimbra, José L F De Mendonça, Flávia M O Freitas, Maria A De Carvalho Barbosa Viana
The so-called "crowned dens" is a peculiar manifestation of calcium crystal deposition diseases, either caused by calcium pyrophosphate dihydrate or caused by calcium hydroxiapatite crystals, characterized by the presence of calcific deposits around the odontoid, often showing a crown-like configuration on imaging. It has protean clinical and radiological pictures, and care should be taken to avoid misinterpretation and diagnostic errors. Although asymptomatic in many patients, this entity may present as a predominantly algic or febrile condition, and in some cases, signs of compression of the spinal cord may be the major complaint...
October 2010: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
J Hatakeyama, Y Hatakeyama, I Takahashi, O Suzuki, Y Sasano
OBJECTIVE: Hydroxiapatite (HA) has been suggested as a useful biomaterial to support the regeneration of tissues. In this study, we investigated the adhesion of periodontal ligament (PDL) cells on octacalcium phosphate (OCP) and its hydrolyzed apatitic product (HL), which are known precursors of HA. METHODS: Rat PDL cells were cultured on OCP or HL-coated dishes. Cell proliferation and adhesion and mRNA expression of collagen I, fibronectin integrin subunits were examined...
September 2007: Oral Diseases
V N Khodyrev, M M Vitilina, G M Lobanova
The purpose of the investigation: to study the biological active supplement (BAS) Calcimax influence on the pain syndrome (PS) dynamics and the psycho-emotional breaches, on the ionized calcium level in the blood plasma of the osteoporosis patients. The Calcimax has been produced by the "Artlife" company (Tomsk, Russia). The calcium hydroxiapatit (200 mg per 1 capsule) It is balanced with the microelements and vitamins. 31 women, who suffer from the osteoporosis disease, at the age of 47 to 64, took place in the prospective randomized investigation...
2002: Voprosy Pitaniia
R Mongiorgi, G Valdrè, G Bertocchi, V Minguzzi, C Prati, G Corvo, S D'Amato
In this work we present the features and the properties of natural and synthetic apatites, which we use in an experimental study of various commercial products composed by calcium phosphate. After having considered the general concepts of biomaterials and biocompatibility, we describe non biological tests used for the characterization of these products. Biomaterials used in this study are: reabsorbable Dac Blu, non reabsorbable Dac Blu, non reabsorbable atomized Dac Blu, non reabsorbable thin Dac Blu, reabsorbable Biocoral 450, Calcitite 2040-12, Orthogel, Apagen, BTF 65, Calcitite 4060-2 Osprogel, Bio-oss, Biostite, Osprovit, Merck Hydroxiapatite...
January 1995: Minerva Stomatologica
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