用于经牙槽嵴顶上颌窦提升术的山羊模型比较

目的比较波尔山羊和上海本地山羊作为上颌后牙区经牙槽嵴顶上颌窦提升术和种植治疗模型的可行性。方法10只波尔山羊和10只本地山羊,处死后6 h内取头颅进行观察。利用CBCT扫描观察上颌骨及上颌窦的解剖,记录上颌窦侧腔的宽度和可用骨高度。取上颌窦黏膜做组织学观察。采用SPSS21.0软件包对数据进行独立样本t检验。结果山羊的上颌窦底被1个前后向骨嵴分为侧腔和近中部。波尔山羊的上颌窦侧腔宽度和可用高度均大于本地山羊。结论波尔山羊更适合做经牙槽嵴顶上颌窦提升术和牙种植的动物模型。上颌第一磨牙区中点是理想的提升与种植位点。

A comparative study of goat models for trans-alveolar sinus floor lift

PURPOSE:To explore the suitability of Shanghai local goats and Boer goats as animal models for trans-alveolar sinus floor elevation and dental implants in posterior maxilla. METHODS: Ten heads of Shanghai local goats and 10 heads of Boer goats were included in this study. Their maxillary sinuses were investigated by cone-beam CT (CBCT) scan. The width and available height of lateral part of the sinus were recorded. The membrane of sinus was examined by histological analysis. Independent samples t test was performed using SPSS21.0 software package. RESULTS: Both goats had maxillary sinus similar to that of humans. The sinus floor was divided into two parts by an anteroposterior bone crest. The width and available height of the lateral part of the sinus for Bore goats were significantly higher than for Shanghai local goats (P<0.05). CONCLUSIONS: As an animal model, Boer goat is more suitable for trans-alveolar sinus floor elevation. The midpoint of the maxillary first molar is an ideal site for trans-alveolar sinus floor elevation and implantation.