問題詳情

57.八歲兒童騎車跌倒,造成左上正中門齒內縮約3mm。X光檢查發現無牙根斷裂情形,但根尖仍未關閉,牙根長度約形成3/4。當下最適當的處理方式為下列何者?
(A)不做立即復位處理(reposition),觀察其是否自行萌出
(B)立即將牙齒復位,且彈性固位(flexible splinting)2週
(C)立即將牙齒復位,彈性固位(flexible splinting)4週
(D)裝設矯正裝置,以矯正力量漸漸將牙齒拉出

參考答案

答案:A
難度:非常簡單0.836
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Spring】評論

乳牙前牙撞擊外傷:乳牙撞入齒槽骨內,一般...

Yang Yeh】評論

摘錄自McDonald 11eCh28 p644For a permanent tooth with a closed root end and intruded less than 3 mm, the treatment is to allow the tooth to erupt without intervention. If no movement is evident after 2–4 weeks, the tooth may be repositioned either orthodontically or surgically before ankylosis can occur. If the tooth is intruded 7 mm or more, the tooth is repositioned surgically and stabilized for 4–8 weeks by means of a flexible splint.