Mohamed Hilal, Nasradeen Ajanan. Surface Chemical Analysis of Hydroxyapatite Compared to Glass Ionomer and Amalgam Materials Used as Retrograde Filling Material in Dentistry. Khalij-Libya J Dent Med Res [Internet]. 2022 Feb. 2 [cited 2024 May 5];6(1):35-42. Available from: http://journals.khalijedental.com.ly/index.php/ojs/article/view/30