磨牙根管不平行病例的金属核制做法

• 作 者: 张抒
• 出 处: 国外医学.口腔医学分册
• 发表日期: 2004年期
• 关键词: 磨牙根管 铸造金属 牙体预备 固位力 桩钉 蜡型 根充 预备体 充填物 工作模型

磨牙做铸造金属核牙体预备时,原则上应该平行地预备根管,但在根管不平行的病例,根管有侧穿的危险性。为了避免侧穿,往往将根管预备得很短,或仅预备一个根管,这便存在着金属核固位力差的可能性。因此,有必要预备成不平行的根管。在这种情况下,原来的方法必须把金属核分成二部或三部制做,技工操做非常复杂。笔者为了解决这些问题,试在金属核内应

In molar preparation, the root canal should be prepared in parallel, but in cases where the root canal is not parallel, there is a risk of the lateral root canal being worn. In order to avoid lateral wear, the root canal is often shortened or only one root canal is prepared, which leaves the possibility of poor retention of the metal core. Therefore, it is necessary to prepare a non-parallel root canal. In this case, the original method must be divided into two or three metal core system to do, technicians do a very complicated operation. The author in order to solve these problems, try in the metal core should be