牙腔

方法：对52例（52耳）胆脂瘤型及骨疡型中耳炎患者，根治病灶后，以同种异体牙乳突腔充填并上鼓室外侧壁重建，同期行开放式鼓室成形术。

Method : Fifty two cases with cholesteatoma or skeletal ulcer otitis media were performed the open method tympanoplasty with mastoid obliteration with homograft tooth and reconstruction of the attic wall after radical mastoidectomy .

结果根管治疗难度系数评估标准利用牙体和髓腔根管解剖能进行根管治疗难度的评估。

Results Endodontic case difficulty assessment standard could be applied to evaluate the root canal treatment difficulty score based on the anatomy of tooth .

方法应用计算机建立上前牙的三维有限元模型，模拟牙本质、牙髓腔、核桩、陶瓷层等结构。

Methods A three-dimensional finite element model of maxillary incisor with consisting of casting porcelain crown , post-core , similar to the clinical structure , was constructed by means of Super-SAP in computer .

30d及60d组可见受伤牙咬合面磨损，根尖X片显示牙颈部牙周膜腔增宽。

Abrasion and widen periodontium ligament were detected on the occlusal surface and X Ray photos respectively both on 30 and 60d group .

人类牙齿的牙本质具有牙本质小管，为多孔性组织结构，牙本质构成髓腔，髓腔内充满牙髓等软组织。

Dentin of human teeth has dentinal tubules , so the structure is porous . Tooth cavity , surrounded by dentin , is filled with soft tissues as pulp .