It helps to analysize the stress and strain condition of periodontal tissues in order to improve the treatment system 準(zhǔn)確認(rèn)識(shí)牙周膜的彈性模量可以分析牙周組織的應(yīng)力與應(yīng)變關(guān)系,完善矯治系統(tǒng)。
Results five deeply embedded teeth with normal pulp and periodontal tissue were migrated to the normal position 結(jié)果5例埋伏牙均移動(dòng)至正常位置,附件無(wú)脫落,埋伏牙萌出后牙髓活力、牙周組織正常。
Methods : the stress distribution in periodontal tissue was analyzed after thetilted abutment received fixed prosthesis using three - dimensional strain rosette 方法:應(yīng)用三維應(yīng)變花技術(shù)對(duì)不同傾斜角度基牙進(jìn)行固定修復(fù)后,對(duì)其牙周組織受力進(jìn)行分析。
Objective : to study the relationship between angle of tilted abutment and stress distribution of periodontal tissue , and todetermine the angle limit for fixed prosthesis 目的:探討基牙牙周組織受力與其傾斜角度的關(guān)系,找出能夠進(jìn)行固定修復(fù)的基牙傾斜角度的極限值。
Purpose : to study the stress of the abutment and its periodontal tissue with different designs of retainer ( type of retainer , place ) in the same situation of dentural defect 摘要目的:探討在相同的缺牙病例中,不同的固位體設(shè)計(jì)(固位體的類(lèi)型、放置的位置)對(duì)牙頜組織的力學(xué)影響。
Methods : based on the 3 - d fea database of rpd , the stress state of the abutment and its periodontal tissue was analyzed to choose the optimal retainer with the same situation of dentural defect 方法:對(duì)個(gè)別牙缺失的病例設(shè)計(jì)不同固位體,在可摘局部義齒三維有限元模型庫(kù)的基礎(chǔ)上組建實(shí)驗(yàn)?zāi)P?,通過(guò)三維有限元方法,分析牙周組織在不同情況下所受的應(yīng)力大小。
Results : with three different retainer designs , the retainer on the second premolar and the first molar exerted the smallest stress on the abutment and its periodontal tissue , while the retainer on the first premolar and the first molar had the largest stress 結(jié)果:在3種不同的固位體設(shè)計(jì)方式中,固位體放置在第二前磨牙與第一磨牙之間時(shí),基牙及牙周組織受力最??;固位體放置在第一前磨牙與第一磨牙上,基牙與牙周組織受力最大。