Krell K V, Jordan R D, Madison S, Aquilino S
J Prosthet Dent. 1986 Jan;55(1):46-9. doi: 10.1016/0022-3913(86)90071-5.
The removal of an existing cast or cemented stainless steel post has proved difficult, time consuming, and to require excessive removal of tooth structure. The use of the ultrasonic scaler alone and in combination with other techniques provides a conservative, efficient method for retrieval of broken posts from root canal spaces. The primary advantage of these techniques in the removal of posts is the conservation of remaining tooth structure.
事实证明，拆除现有的铸造桩或粘结的不锈钢桩既困难又耗时，而且需要过多地去除牙体组织。单独使用超声洁牙器以及与其他技术联合使用，为从根管中取出折断的桩提供了一种保守、高效的方法。这些技术在拆除桩方面的主要优点是能保留剩余的牙体组织。
