It is with great pleasure that we present the proceedings of the closing seminar of the research project on Development of a digital platform of teledentistry for the elderly in the context of the COVID-19 pandemic, funded by the Contest for Rapid Allocation of Funds of the National Agency of Research and Development (ANID), Reference No. COVID0766, Chile.

In this volume you will find manuscripts about: Cost-Benefit Analysis of Drinking Water Fluoridation, Effectiveness of dental emergency services, Need for Orthodontic Treatment of adolescents, Special care for the transfer of oral tissue samples, critical education higher in health sciences and much more.

Congress of Public Health of the South was held, organized by the Department of Prevention and Public Health of the Faculty of Dentistry, University of Concepción, Chile.

Proceedings from the Scientific Closing Seminar of the Project: Immunohistochemical, histochemical and endoscopic analysis of the bone tissue associated with periimplantitis: Development of an in vivo and in vitro model. (Seminario Científico de Cierre del Proyecto REDI170658, CONICYT, Chile)

First issue of the year 2019, encompassing thirteen articles in which a set of diverse issues are addressed, ranging from material science, to morphology and physiology, microbiology, education in dentistry, and pediatric dentistry.

Special issue of the proceedings from the first International Dental Conference, held on 2-3 Apr, 2019 at Al Noor University College - Dept. of Dentistry, in Mosul city, Iraq.