1. Nano‐Structured Materials Division CSIR‐Central Glass and Ceramic Research Institute Kolkata 700032 India
2. Inorganic Chemistry Department Åbo Akademi University FI‐20500 Åbo Finland
3. Turku Clinical Biomaterials Centre‐TCBC University of Turku FI‐20520 Turku Finland
4. Department of Prosthetic Dentistry and Biomaterials Science Institute of Dentistry University of Turku Turku Finland