Evaluation of the effect of adding a flexible acrylic resin to the lingual flanges of the mandibular complete denture upon the masticatory efficiency in edentulous patients Using Color–changeable Chewing Gum. مجلة الجامعة [Internet]. 2021 Mar. 2 [cited 2026 Jun. 6];4(1). Available from: https://journal.hama-univ.edu.sy/huj/article/view/536