Acknowledgments
This experiment is supported by the Dental Research Center of
the Mashhad University of Medical Sciences, Mashhad, Iran. We
also wish to thanks Dr. Monavar Afzal Aghaee for her valuable input
in statistical analysis of the date, Miss.Mahbobeh Shahi for purchasing
hyaluronic acid from US and Miss. Iran Momeni for helping in
preparation of this novel formulation.