【評論主題】70.一名20歲男性因美觀問題求診,他全口的牙齒都有嚴重磨耗的情形,其後牙的根尖片如圖。他可能罹患何種疾病? (A)Amelogenesis imperfecta(B)Dentinogenesis i

【評論內容】

dentinogenesis imperfecta: normal size, constricted in CEJ (bulbous appearance), short root, pulp obliteration

odontogenesis imperfecta: ghost teeth, large pulp

【評論主題】35.施行勒福一型(LeFort I)正顎手術,若做大幅度移動,有關術後穩定性,下列何者最差?(A)前置(anterior reposition)(B)後置(posterior reposition)

【評論內容】

due to masticatory muscles bringing mandible to occlusion and posing a force on maxilla

【評論主題】23.牙周膜(PDL)持續承受壓力時,下列敘述何者錯誤?(A)小於1秒,PDL未被壓縮,齒槽骨彎曲,產生壓力電位(B)1~2秒,PDL內組織液被擠出,但牙齒在PDL內不會產生位移(C)3~5秒,PDL

【評論內容】

<1 alveolar bone bending, no PDL fluid

1-2 PDL fluid, PDL deformity

3-5 vessels occluded on pressure

minutes PG and cytokine released, no blood flow

hours cell death

3-5 days undermining resorption

7-14 days tooth movement

【評論主題】57.未治療的牙周炎(untreated periodontitis)之長期研究顯示下列何種促炎介質(proinflammatory mediator)與牙周炎的進展過程有關?(A)IL-1β(B)I

【評論內容】

macrophage and fibroblst→produce PGE2→induce MMP→induce osteoclast bone resorption→attribute to alveolar bone loss and attachment loss

【評論主題】60.傳統X光片影像太黑,其可能的原因,下列何者錯誤?(A)顯影劑濃度太高(B)顯影劑溫度過低(C)顯影時間太久(D)X光暴露的時間太長

【評論內容】

Overexposure owing to:

(1) Faulty X-ray equipment, e.g. timer

(2) Incorrect exposure time selected

Overdevelopment owing to:

(1) Excessive time in the developer solution

(2) Developer solution too hot

(3) Developer solution too concentrated

【評論主題】10.以下何種咬合關係的人於發“s ” 音時有最大的說話空間(speaking space)?(A)安格氏第一級(Angle's Class I)(B)安格氏第二級(Angle's

【評論內容】

when S

class I: overlap 1.5-5 mm, posterior speaking space 1.5-3 mm

class II: overlap 1.5-10 mm, posterior speaking space 2-8 mm