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该法的优点是植入体在植入前可塑形,易被放在适宜位置,避免愈合期植入体大小、形态的改变。胶原管有三种内径:5,8,10mm,长度则可根据口内实测情况而定。用末端开口的耐热玻璃管将装有颗粒状羟基磷灰石的胶原管引入骨膜下隧道。用此法对20例(男19,女1例,年龄35岁～75岁)行22次牙槽嵴增高术。除1例外均已成功地戴用托牙至少2年。53%病例认为比术
The advantage of this method is that the implant can be shaped before implantation, easily placed in a suitable position to avoid the size and morphological changes of the implant at healing. Collagen tube has three kinds of inner diameter: 5,8,10 mm, the length of the mouth can be measured under the circumstances. A collagen tube filled with granular hydroxyapatite was introduced into the subperiosteal tunnel using a Pyrex tube open at the tip. Twenty patients (19 male and 1 female, aged 35-75 years) underwent alveolar ridge augmentation with this method. All but one successful wear of denture for at least 2 years. 53% of cases considered surgery