现代用各种即刻义齿修复来改善无牙颌状态的方法,日益被患者及医生所接受。这种方法显然在短期内效果尚可,但最终由于牙槽骨的吸收而致托牙的基础不足。Morrow等于1969年提出保留牙根于牙槽内可使牙槽骨不吸收。Howell(1970)将保留的牙根做根管治疗及复盖于厚的组织瓣下,使托牙基础得到改进。Kakehashi Modern methods of using various immediate dentures to improve the state of the edentulous jaw are increasingly accepted by patients and doctors. This method is obviously effective in the short term, but ultimately due to the absorption of alveolar bone dentures due to lack of foundation. Morrow, who proposed in 1969 to retain root in the alveolar bone, did not absorb alveolar bone. Howell (1970) treated the retained root canal for root canal treatment and covered under a thick tissue flap to improve denture base. Kakehashi