不论用带环或全冠作抗基牙的固位体都需要于其颊、舌侧焊接颊侧管和舌侧管,以便唇、舌弓插入。以往是徒手焊接并用焊架测试两颊管的位置。这种焊接方法,对初学者来说较难掌握,有时需反复焊接多次,影响质量。我们采用固定、包埋的焊接方法,效果较好。现介绍如下: 1、口腔内试冠或带环合适后取模,并转移到石膏模型上,在灌注石膏前冠内加蜡,消除冠内倒凹,但冠内的面不加蜡。 Neither the band retainer nor the crown as an anti-abutment retainer requires the buccal and lingual sides to be welded to the buccal and lingual tubes so that the lips and lingual arch can be inserted. In the past, it was bare-handed and tested with two welding tubes. This welding method, for beginners is more difficult to grasp, sometimes repeated welding several times, affecting the quality. We use a fixed, embedded welding method, the effect is better. Now introduced as follows: 1, the oral crown or ring after the test take the appropriate model, and transferred to the gypsum model, the crown before the addition of wax gypsum perfusion to eliminate the crown concave, but the crown of the noodles without wax.