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作者从1978年开始用致密微粒型羟基磷灰石加大了75例萎缩牙槽嵴的高度和宽度。本文介绍了其中56例随访1～4年的治疗结果。本研究所采用的羟基磷灰石为不吸收的致密不规则微粒(18～40目),由路易斯安那州大学1978年设计。患者平均年龄25～78岁。术前作全景和侧位头测量X线拍片。根据牙槽嵴萎缩的程度进行分类,Ⅰ～Ⅲ类只用羟基磷灰石加大牙槽嵴,Ⅲ～Ⅳ类采用羟基磷灰石与自体新鲜骨碎块之混合物。Ⅰ～Ⅲ类患者术前抽1～2 ml静脉血作为羟基磷灰石的赋形剂,局麻下按所要加大的牙槽嵴的不同部位,在唇侧正中线或双侧尖牙区作牙槽嵴区前庭沟的纵形切口,长约1.5cm,完成需要加大牙槽嵴区域的骨膜下袋,在上颌或牙槽嵴极度萎缩的下颌常
The authors increased the height and width of 75 cases of atrophic alveolar ridge with dense particulate hydroxyapatite since 1978. This article describes the treatment of 56 cases followed up for 1 to 4 years. The hydroxyapatite used in this study is a non-absorbing dense irregular particle (18-40 mesh) designed by the University of Louisiana in 1978. The average age of patients 25 to 78 years old. Preoperative panorama and lateral head measurement X-ray film. According to the degree of alveolar ridge shrinkage classification, Ⅰ ~ Ⅲ only hydroxyapatite to increase alveolar ridge, Ⅲ ~ Ⅳ hydroxyapatite and fresh mixture of fresh bone fragments. Ⅰ ~ Ⅲ patients preoperative pumping 1 ~ 2 ml venous blood as hydroxyapatite excipients, under local anesthesia according to the different parts of the alveolar ridge to be increased in the labial midline or bilateral canine area For the alveolar ridge vestibular groove vertical incision, about 1.5cm, to complete the need to increase the alveolar ridge area of the subperiosteal pouch in the maxillary or alveolar ridge atrophy of the mandible is often