
Mimicking can be done by using either by natural substitutes or Synthetic substitutes. Biomimetics is defined as the study of the formation, structure or function of biologically produced substances and materials and biological mechanisms and processes especially for the purpose of synthesizing similar products by artificial mechanisms which mimic natural ones. A material fabricated by biomimetic technique based on natural process found in biological systems is called a biomimetic material. Why synthetic materials are preferred? Age, disease and traditional restorations can cause further problems to the existing tooth structure. As teeth have no natural method of repair, biomimetic principles should be used to artificially repair the tooth to its natural functions and aesthetics. Biomimetics is an emerging inter disciplinary field that combines information from the study of biological structures and their function with physics mathematics chemistry and engineering in the development of principles that are important for the generation of novel synthetic materials and organs. Calcium hydroxide is one of the biomimetic material in dentistry.