Wauters M, Hernández S, Juárez I, Vergara G. Oral hygiene, periodontal status and treatment needs in 12 years old students, Castro-Chile, 2014. JOR [Internet]. 1Dec.2014 [cited 12Mar.2026];4(1):19-4. Available from: https://www.joralres.com/index.php/JOralRes/article/view/joralres.2015.006