金屬面與應(yīng)力中斷設(shè)計(jì)在齦距不足游離端牙齒缺失修復(fù)中的應(yīng)用

1 資料和方法

1.1 病例資料

患者，女性，51 歲，陜西西安人，因雙側(cè)下頜后牙缺失3 年，來我院要求修復(fù)治療?；颊邿o吸煙、酗酒史。全身健康狀況良好，否認(rèn)有高血壓、心臟病等系統(tǒng)性疾病，否認(rèn)有乙肝、艾滋病等傳染性疾病，無藥物過敏史?；颊咦允觥? 年前兩側(cè)下后牙因嚴(yán)重齲壞于外院拔除，曾于外院行活動義齒修復(fù)2 次，均半年內(nèi)折斷。最近一次活動義齒損壞至今1 年時間內(nèi)，未對缺失牙進(jìn)行修復(fù)。以往修復(fù)過程中曾因缺牙區(qū)對頜牙伸長，對右側(cè)上后牙進(jìn)行調(diào)磨，右側(cè)上后牙進(jìn)食過冷過熱食物有不適感”。臨床檢查：37 牙缺失，鄰缺隙牙無傾斜、無扭轉(zhuǎn)，對

2.金融轉(zhuǎn)換效率指標(biāo)。一個地區(qū)儲蓄轉(zhuǎn)換為貸款的比率越高，反映該地區(qū)金融機(jī)構(gòu)在提供金融服務(wù)、日常經(jīng)營以及金融體系中資金配置的效率越高。本研究用縣域金融機(jī)構(gòu)貸款總額占存款總額的比值（SLR）表示廣西縣域金融轉(zhuǎn)換效率指標(biāo)。

1.2 治療計(jì)劃

治療計(jì)劃：可摘局部義齒修復(fù)缺失牙。

甲基蓮心堿與荷葉堿作用HepG2細(xì)胞對其上清液中LDH、TGF-β1、VEGF 的比較…………………………………… 李 娜，宋金春（2·89）

1.3 治療過程

1.3.1 初模型分析與支架設(shè)計(jì) 取初模型，利用導(dǎo)線觀測儀進(jìn)行分析，進(jìn)行義齒初步設(shè)計(jì)，完成義齒設(shè)計(jì)圖（圖3）。

1.3.2 基牙預(yù)備與精細(xì)印模 依據(jù)義齒就位道方向制備備牙導(dǎo)板，并利用備牙導(dǎo)板進(jìn)行基牙預(yù)備，消除基牙過大倒凹，制備導(dǎo)平面及支托窩。并用個別托盤與流動性更好的聚醚橡膠，兩步法制取精細(xì)印模（圖4）。

1.3.4 功能性印模 1 周后復(fù)診，支架調(diào)改，口內(nèi)試戴合適后，用光敏樹脂在支架上制作缺牙區(qū)局部個別托盤，并進(jìn)行邊緣整塑，利用聚醚橡膠制取功能性印模后，進(jìn)行模型切割、圍模灌注及模型修整。重新上架后，送交技工室（圖6）。

1.3.5 義齒完成與試戴 義齒初戴時，首先對義齒組織面、基托邊緣進(jìn)行調(diào)磨。義齒完全就位后，用咬合紙輔助進(jìn)行咬合調(diào)改。T-scan 檢測調(diào)改后患者口內(nèi)咬合狀態(tài)（圖7）。

2 結(jié) 果

3 討 論

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】 Luo JT, Wang YM collected, analyzed the data and revised the article. Sun GY, Qin T analyzed the data and re-vised the article. Wu GF designed the study and revised the article. Ba RK designed the study and wrote the article. All authors read and ap-proved the final manuscript as submitted.

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