Setting mechanisms of an acidic premixed calcium phosphate cement

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Åberg, Jonas,1982-Uppsala universitet,Tillämpad materialvetenskap,Materials in Medicine (author)

Setting mechanisms of an acidic premixed calcium phosphate cement

Article/chapterEnglish2013

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2013
OMICS Publishing Group,2013
electronicrdacarrier

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LIBRIS-ID:oai:DiVA.org:uu-168645
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-168645URI
https://doi.org/10.4172/2090-5025.1000070DOI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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Detta är den omarbetad versionen av artikeln ursprungligen inskickad till "Journal of Biomedical Materials Research. Part B - Applied biomaterials".
Premixed calcium phosphate cements (pCPC), where glycerol is used instead of water as mixing liquid, present better handling characteristics than water-based cements. However, the setting mechanisms of pCPC have not been described thoroughly. The aim of this paper is to increase the understanding of the setting mechanism of pCPC. The investigated cement starts to set when glycerol is exchanged with water via diffusion of glycerol out to the surrounding body fluid and water into the material. To better understand the water-glycerol exchange a method was developed where the setting depth of the cement was measured over time. Thermo gravimetric analysis (TGA) was used to determine the liquid exchange rate during setting. To study the influence of temperature on the crystalline end product, pCPC and water-mixed calcium phosphate cement (wCPC) were set at different temperatures and analyzed with X-ray diffraction (XRD). The setting depth measurements showed that the set layer of the pCPC grew with a speed proportional to t0.51 at 37°C. TGA results furthermore showed that less than 10% of the glycerol remained after 16 hours. Setting of pCPC at different temperatures showed that mainly brushite was formed at 5°C, a mixture of brushite and monetite at 21°C and mainly monetite at 37°C. It furthermore showed that brushite was the main phase after setting of wCPC, but some monetite was present in these cements. The study presents a new method for evaluation of pCPC that increases the understanding of their setting mechanism. Furthermore, the XRD results indicate that storage at 5°C could improve the shelf life of acidic pCPC.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Materialteknik Keramteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Ceramics hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Medicinsk bioteknologi Biomaterialvetenskap hsv//swe
MEDICAL AND HEALTH SCIENCES Medical Biotechnology Biomaterials Science hsv//eng
Premixed
Calcium phosphate
Cements
Setting
Monetite
Brushite
Teknisk fysik med inriktning mot materialvetenskap
Engineering Science with specialization in Materials Science

Added entries (persons, corporate bodies, meetings, titles ...)

Engstrand Unosson, JohannaUppsala universitet,Tillämpad materialvetenskap(Swepub:uu)johen883 (author)
Engqvist, HåkanUppsala universitet,Tillämpad materialvetenskap,Materials in Medicine(Swepub:uu)hakaengq (author)
Uppsala universitetTillämpad materialvetenskap (creator_code:org_t)

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In:Bioceramics Development and Applications: OMICS Publishing Group3:1, s. 1000070-2090-50172090-5025

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Ceramics

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