The effect of palatal expansion therapy on the periodontal supporting tissues

American Journal of Orthodontics - Tập 81 - Trang 12-21 - 1982
Kenneth R. Greenbaum1,2, Björn U. Zachrisson1,2
1From the Department of Orthodontics, Loma Linda University Loma Linda, Calif., USA
2From the Department of Orthodontics, University of Oslo Oslo, Norway