口腔颌面影像诊断学模拟考题 1单选题(50 分)1、 Which one of the following anatomy is not usually apparent radiographically?A) enamel B) dentin C) cementum D) pulp cavity2、 Periodontal ligament space appears as a radiolucent space between the tooth root and the _________、A) alveolar crest B) lamina dura C) cancellous bone D) trabecular bone3、 Which one of the following may appear on a periapical radiograph of the upper third molar area?A) external oblique ridge B) mylohyoid ridge C) coronoid process D) condyle4、 Which one of the following anatomy should not appear on the periapical radiograph of the lower central incisor?A) genial tubercles B) mental foramen C) nutrient canals D) inferior border of the mandible5、 Which of the following projections images the crowns of both maxillary and mandibular teeth on the same film and is helpful in diagnosing interproximal dental caries?A) panoramic B) periapical C) bitewing D) occlusal 6、 In which of the following techniques is a film holder a necessity?A) occlusal B) paralleling C) bisection of the angle D) lateral oblique mandible7、 龋病就是牙硬组织发生慢性进行性破坏得一种疾病,龋病根据进展情况分为_____A) 急性龋,慢性龋,静止龋 B) 咬合面龋、平滑面龋C) 根面龋、线性釉质龋 D) 窝沟龋、邻面龋8、 _______龋只累及釉质或牙骨质A) 浅龋 B) 中龋 C) 深龋 D) 邻面龋9、 继发龋就是指 X 线片上可显示在金属填充物得窝洞边缘,牙硬组织破坏形成密度______得不规则得窄缝,边缘常不光滑。A) 增高 B ) 减低 C) 不均匀 D) 均匀10、 牙内吸收得患牙髓腔____________,呈圆形或卵圆形或不规则形密度减低得透射影A) 缩小 B) 扩大 C)大小不变 D) 密度增加11、 牙骨质增生就是由于增生得牙骨质沿牙根不断沉淀,使牙根________________A) 密度减低 B) 密度不均匀增高 C) 变粗增大 D) 变细缩小12、 牙骨质结构不良分为三期病变A) 一期病变密度增高 B) 三期病变密度增高C) 一期病变不均匀密...
