The effect of strontium doped Zn-Ca-P (ZCP) coating by chemical conversion technique on the biodegradation of AZ31 alloy was evaluated. The coating formed with 1.5 wt.% Sr and 20 min phosphating time at 50 °C with pH 2.5 completely covers the alloy surface. The Sr doped coated sample also showed very low evolved hydrogen gas and pH change than the ZCP coatings suggested that the degradation of the alloy was extremely controlled. The in vitro bioactivity studies in simulated body fluid exhibits deposition of calcium phosphate phases with Ca/P ratio of 1.55 which is close to that of hydroxyapatite, mineral component of bone. Cytotoxicity evaluation with L929 cells showed higher cell viability of the Sr doped coatings compared to ZCP coatings. © 2019

P. Amaravathy

T. Satish Sampath Kumar

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IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Journal of Magnesium and Alloys

Tetracalcium phosphate (TTCP) is the most basic phase among the calcium phosphate bioceramics. TTCP has been used as self setting bone cement and its relatively high surface pH seems to be very beneficial for cell adhesion and bone formation. Various attempts have been made to improve the cement properties for the ease of use during the surgical procedures. The effect of citric acid (CA) on the setting properties, apatite forming ability, strength and biological behavior of TTCP based bone cement has been studied in detail in the present study. The cement formulation containing 15&nbsp;% CA has been found to have setting time between 9 and 16&nbsp;min suitable for bone cement. It also showed complete conversion to apatite phase and highest compressive strength after 28&nbsp;days of immersion in phosphate buffer at physiological conditions. Cell culture studies using rat skeletal muscle cells confirm higher cell viability in the CA containing cements compared to the pure cement without CA content. The results suggest that self-hardening tetracalcium phosphate based bone cement modified with CA holds a promise for its use in orthopaedic and trauma surgery. © 2015, The Indian Institute of Metals - IIM.

Transactions of the Indian Institute of Metals

Accelerated Self-Hardening Tetracalcium Phosphate Based Bone Cement with Enhanced Strength and Biological Behaviour

Circulation

Letter by Nguyen et al Regarding Article, “B-Type Natriuretic Peptides and Cardiac Troponins for Diagnosis and Risk-Stratification of Syncope”

Journal of Materials Science & Technology

In vitro corrosion resistance and antibacterial performance of novel tin dioxide-doped calcium phosphate coating on degradable Mg-1Li-1Ca alloy

Acta Biomaterialia

Advances in functionalized polymer coatings on biodegradable magnesium alloys – A review

Journal of Alloys and Compounds

Deposition of strontium phosphate coatings on magnesium by hydrothermal treatment: Characteristics, corrosion resistance and bioactivity

Bioactivity enhancement by Sr doped Zn-Ca-P coatings on biomedical magnesium alloy

Journal	Journal of Magnesium and Alloys
Publisher	National Engg. Reaserch Center for Magnesium Alloys
ISSN	22139567
Open Access	Yes