Shuichi Tsubura, Masahide Kanazawa, Shunya Oka, Rika Hirama, and Tsutomu Tsubura. “Using PF-MOUTH GELTM for Sore or Painful Tongue Improved Symptoms and Stabilized Dryness and Trapping of Food: A Case Report”. Dentistry 7, no. 1 (February 24, 2021): 7–11. Accessed September 6, 2026. https://openventio.us/index.php/DOJ/article/view/1501.