牙折的病因及治療方法-wenkub
2023-01-19 13:33:43 本頁(yè)面
【正文】 、碎骨等硬物。 X片是診斷根折的重要依據(jù) Diagnosis can be carried out by radiographic examination 冠根折 crownroot fracture 以斜行多見， 牙髓常暴露。 In case of a pulp exposure,pulpectomy is indicated if the root apical is developed,pulpotomy is sufficient if the root apical is developing. 根折 root fracture 根中 1/3折，根尖 1/3折 middlethirds,apicalthirds 用夾板固定三個(gè)月，如牙冠端有錯(cuò)位，在固定前應(yīng)復(fù)位。 If fracture surface is 4mm below the alveolar and the root length is enough ,surgical or orthodontic extrusion of the root ,to move the fracture surface to amore optimal location for final restoration 樹脂夾板固定 Composite resin splint 根折的轉(zhuǎn)歸 鈣化性愈合 結(jié)締組織性愈合 骨、結(jié)締組織聯(lián)合愈合 斷端被慢性炎癥組織分開 Connective tissue healing The fragment is separated by chronic inflammation tissue Calcified healing Hardconnective tissue union healing Healing of root fracture 冠根聯(lián)合折 crownroot fracture： 可作根管治療，具備樁核冠修復(fù)的冠根聯(lián)合折，應(yīng)保留。 The tooth should be extracted if it is very loose or of severe periodontal lesion or vertical root fracture in single rooted tooth. 牙周病損局限且牙穩(wěn)固的磨牙，可在根管治療后行牙半切術(shù)或截根術(shù)。 Clinic characteristics 根據(jù)缺損程度分淺型、深型和穿髓 3型 前磨牙好發(fā)，常左右對(duì)稱，有牙齦退縮 隨年齡增長(zhǎng)，楔狀缺損有增加趨勢(shì) Be classified with shallow,deep and pulp exposure according to the depth of the lesion Most monly occur on the buccal surface of bicuspids symmetrically and acpany with gingival recession The sizes of abrasions increase with ag
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