Analysis of the anchorage control and consumption of the Nance-arch / 实用口腔医学杂志

objective: To study the relation of anchorage control and consumption of Nance arch. Methods: J hook anchorage, Nance arch with J hook anchorage, and Nance arch anchorage were used in 15, 12 and 16 cases for orthodontic treatment. All anchorage consumption of the first molar was measured on dental cast. Results: Forward movement of first molar in all of the cases was observed after treatmment( P