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Title: | 金屬矯正托架與暫用贋復體間剪力鍵結強度之探討 Shear bond strengths for metallic orthodontic brackets bonded to provisional prosthesis |
Authors: | Hsiang-Hua Lai 賴向華 |
Advisor: | 林俊彬 |
Keyword: | 剪力鍵結強度,暫時性贋,復體,表面處理,黏著系統, shear bond strength,provisional prosthesis,surface treatment,bonding system, |
Publication Year : | 2005 |
Degree: | 碩士 |
Abstract: | 本研究之主要在於探討金屬矯正托架於暫時性牙冠之剪力鍵結强度。將透過臨床上兩種常用製作暫用牙冠專用之自聚式壓克力樹脂及複合樹脂作為暫時性固定贋復體之材料。每一種分成八組共320個樣本,包括使用目前臨床上常用之三種自聚式類、雙重聚式類及4-META/MMA-TBB類等三種不同之矯正樹脂黏著系統及噴砂、甲基丙烯酸甲酯單體濕潤及矽烷隅合劑等三種不同之方法對暫時性固定贋復體作表面處理(n=320)。使用Instron萬用測試機及拆除刀面以速率為0.5mm/min,對托架及實驗樣本接面處以垂直方式施力直至托架被剪下為止。另選取40顆沒有蛀牙的人類小臼齒作為對照組,利用黏著層殘指數(ARI)將不同的斷裂方式予以分類。實驗結果經單因子變異數分析及Duncan’s多重排列檢定統計顯示在複合樹脂贋復體使用自聚式矯正樹脂黏著系統並透過噴砂及矽烷隅合劑之表面處理後,達到最佳之鍵結強度。此外4-META矯正樹脂黏著系統之鍵結強度更是各組之冠。但臨床上之去鍵結模式與口外實驗之各種條件均不相同,因此本實驗之初步結果祗能作為臨床之參考,並根據本結果設計口內臨床試驗,才能得出真正可應用在病患口內之最佳鍵結組合,減少黏著失敗,為臨床矯正醫師尋找出更有效率及完全之方法。 This study evaluated the effect of three kinds of surface treatments and orthodontic bonding systems on the shear bond strength of metallic orthodontic brackets bonded to a various provisional prosthesis materials. The provisional prosthesis materials were divided into two groups. One is self cured acrylic resin and other is self cured composite resin. Each group is also divided into eight sub-groups that were subjected to sandblasting, silane application, MMA wetting, self cured, dual cured bonding system and 4-META bonding system (n=320). Vertical and uniform loading (0.5mm/mins.) during testing were secured by Instron Model Universal testing machine. Similar control brackets (n=40) were bonded with both bonding systems to extracted caries-free premolars. Bond failure sites were classified according to Adhesive Remnant Index (ARI) systems. Silane application to the sandblasted composite resin provisional prosthesis with self cured bonding system significantly increased the bond strengths according to analysis of variance and Duncan’s multiple range test. 4-META bonding system was significantly better than all of the other combination. Because of several difficulties associated with the clinical interpretation of laboratory data on bonding to resin type provisional prosthesis, and clinical trials are necessary for final evidence of efficacy. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/36281 |
Fulltext Rights: | 有償授權 |
Appears in Collections: | 臨床牙醫學研究所 |
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ntu-94-1.pdf Restricted Access | 2.14 MB | Adobe PDF |
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