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牙科医生对保留部分牙齿的探索已有100多年的历史.早在1886年,G·V Black就指出,在实践中,大量的牙齿可通过截根术与去除多根牙的一根而予以保留。1894年,Younger首先对根管治疗的概念作了补充,其方法是开放颊根,除髓、充填并去除腭侧根,然后磨除位于截除牙根之上的足够的牙冠咬(牙合)面,使咀嚼压力集中于颊侧根上。如今,人们已能广泛接受Farrar的主张,即保留部分牙齿比去除该牙好,保留3个牙根比2个牙根好,2个牙根比1个牙根好,1个牙根比无根好.一、定义半切术(hemisection)通常指切除一半牙齿,先将牙齿劈开,然后去除一个牙根。截除(ampu-
Dentists have been exploring the preservation of some teeth for more than 100 years, and as early as 1886, GB Black pointed out that in practice, a large number of teeth can be retained by truncating the root and removing multiple teeth . In 1894, Younger first supplemented the concept of endodontic treatment by opening the buccal root, removing the pulp, filling and removing the palatal root, and then abrading enough of the crown to be placed over the root of the tooth, Face, so that the pressure of chewing focus on the buccal root. Nowadays, people can widely accept the opinion of Farrar that retaining some teeth is better than removing the tooth, retaining three root roots better than two root roots, two root roots better than one root root, and one root root better than the rootless root. First, Definitions Hemisection usually refers to cutting off half of a tooth, cleaving it first and then removing one. Ampu-