腔颌面影像诊断学模拟考题(含答案)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. Periodontaligamentspace appearsas a radiolucentpace between the toothrootand theA)alveolar crest B) lamina dura C) cancellous bone D) trabecular bone3. Which one of thefollowingnay appearon a periapicaladiographof theupper thirdnolar area?A)external oblique ridgeB) mylohyoid ridge C) coronoid processD) condyle4. Which one of thefollowinginatomy shouldnot appearon theperiapicadadiographof the lower central incisor?A)genial tuberclesB) 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) occlusal6. In which of the following techniques is a film holder a necessity?A) occlusal B) paralleling C) bisectionof the angle D) lateraloblique mandible7. 龋病是牙硬组织发生慢性进行性破坏的一种疾病,龋病根据进展情况分为―一―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. 继发龋是指 X 线片上可显示在金属填充物的窝洞边缘,牙硬组织破坏形成密度的不规则的窄缝,边缘常不光滑。A)增高 B )减低 C)不均匀 D)均匀10. 牙内吸收的患牙髓腔,呈圆形或卵圆形或不规则形密度减低的透射影A)缩小 B)扩大 C)大小不变 D)密度增加11. 牙骨质增生是由于增生的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) 一期病变不均匀密度减低 D) 三期病变不均匀密度减低13. 良性成牙骨质细胞瘤,多发于 25 岁以下的男性,常,以磨牙区多见。A)复发 B)恶变 C...