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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林立德 | |
dc.contributor.author | Chun-Cheong Chin | en |
dc.contributor.author | 錢振昌 | zh_TW |
dc.date.accessioned | 2021-06-14T16:48:55Z | - |
dc.date.available | 2008-08-08 | |
dc.date.copyright | 2008-08-08 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-31 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/40482 | - |
dc.description.abstract | 實驗目的:鑲瓷面的斷裂在臨床上甚為常見,且其所產生的美觀與功能的問題,往往會造成病人以及牙醫師的困擾。本實驗的目的探討不同厚度的鑲瓷面,作用在植體的金屬瓷冠上時,其鑲瓷面的抗斷裂強度是否會受厚度的影響。
材料與方法:40顆寬高長為8×8×8 mm的立方體形狀的金屬瓷冠製作成兩種不同厚度的鑲瓷面,在咬合面、頰側面、近心面、舌側面及遠心面等比例削減1.5mm及2.5mm的厚度,以製作分別為Group 1與Group 3:鑲瓷面為1.5mm;Group 2與Group 4:鑲瓷面為2.5mm,並分成為四組,每組各10顆。並選用Brånemark RP的植體類比體,從平台開始露出約2 mm的高度,並注入硬石膏倒模型,以製作寬高長為30×30×84 mm的實驗模具。植體類比體接上簡易式支台齒後,以暫時黏著劑將金屬瓷冠接上。首先,在Group 3與Group 4的金屬瓷冠上,先以80牛頓、頻率為3Hz,作100,000次垂直的動態力,施壓在近心側邊緣崤咬合面內1mm以作測試,以模擬半年內口腔的咀嚼運動。之後,將所有實驗組的金屬瓷冠固定上拉力測試機(Instron 5566),並以0.5mm/min的速度施壓在金屬瓷冠上近心側邊緣崤咬合面內1mm,直到鑲瓷面發生斷裂,並記錄各組金屬瓷冠的平均抗斷裂數值(kgf)。且利用掃瞄式電子顯微鏡觀察裂紋的型態。以二方分類變異數分析法(two-way ANOVA)與獨立樣本T-檢定(independent t test)來比較不同組之間的差異,同時觀察二項變因,包括不同厚度的鑲瓷面以及動態力是否參與對金屬瓷冠是否有所影響。統計顯著之水準定義:p<0.05。 實驗結果:(1)Group 3與4的金屬瓷冠經過垂直的動態力測試後,鑲瓷面並沒有發生斷裂,只有凹洞的產生。(2)各實驗組經過單次負載測試後,所得的平均瓷抗斷裂值分別為:Group 1:129.63±12.65 kgf;Group 2:116.08±10.83 kgf;Group 3:84.18±3.98 kgf;Group 4:66.94±11.05 kgf。(3)經過單次負載測試,對於厚度不同的鑲瓷面,只有進行過週期性疲勞測試的實驗組(Group3&4),其瓷抗斷裂的平均值呈現統計上的差異。(4)進行週期性疲勞測試的金屬瓷冠,在電子顯微鏡的觀察下,凹洞處的陶瓷有裂紋形成及裂紋向外擴散的情況。另外,進行單次負載測試的金屬瓷冠,斷裂面較為平整。 結論:根據本實驗的結果,臨床上當補綴物其鑲瓷面的厚度減少至1.5 mm內,能降低鑲瓷面斷裂的機會,而不減少其美觀。 | zh_TW |
dc.description.abstract | Purpose: Fracture of ceramic veneers is frequently observed in clinical practice and poses an esthetic and functional dilemma both for the patient and the dentist. The purpose of this study was to compare the porcelain fracture resistance between two different thickness of porcelain on the cement-retained implant metal-ceramic crowns. Material and methods: Forty (8×8×8 mm, W×H×L) cubic-shaped single metal-ceramic crowns were fabricated with two different thickness (1.5 mm or 2.5 mm) of porcelain and divided into four groups (10 crowns each): Groups 1 & 3 (1.5 mm), Groups 2 & 4 (2.5 mm). All the samples were cemented on 1mm Easy abutment above a Brånemark RP implant analog embedded in a 30×30×84 mm type IV die stone block. Groups 3 & 4 were first exposed to a vertically dynamic loading of 80N for 100,000 cycles to simulate masticatory function at mesial marginal ridge of the occlusal surface. Afterwards, all the samples were positioned in a custom testing apparatus and vertically loaded on the mesial marginal ridge of the occlusal surface with a universal testing machine (Instron 5566) at a crosshead speed of 0.5 mm/min until fracture. SEM fractographic analysis was utilized to determine the fracture patterns. Mean values of load at fracture (kgf) were recorded in each group and compared with a 2-way ANOVA and independent t-test (p<0.05)(factors: porcelain thickness, with/without dynamic loading).
Results: 1. No obvious ceramic fracture except digging pits was observed in Groups 3 & 4 after dynamic loading. 2. Mean values of loads required to fracture the crowns were as follow: Group 1: 129.63 ± 12.65 kgf; Group 2: 116.08 ± 10.83 kgf; Group 3: 84.18 ± 3.98 kgf; Group 4: 66.94 ± 11.05 kgf. 3. Dynamic loading prior to fracture test reduced the mean fracture loads significantly in Groups 3 & 4. 4. Cohesive or adhesive fracture of the porcelain can be observed in all four groups in fracture test. Conclusions: From a clinical viewpoint, to diminish the porcelain thickness of about 1.5mm, can decrease the probability of porcelain fracture of metal-ceramic crowns. | en |
dc.description.provenance | Made available in DSpace on 2021-06-14T16:48:55Z (GMT). No. of bitstreams: 1 ntu-97-R93422002-1.pdf: 5582885 bytes, checksum: 0466ba0169bed3174252363969221480 (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 英文摘要………………………………………………………1
中文摘要………………………………………………………3 壹、前言………………………………………………………5 貳、文獻回顧…………………………………………………6 I. 鑲瓷面斷裂的機率……………………………………………6 II. 金屬瓷冠斷裂面的分類………………………………………7 III. 鑲瓷面斷裂病因的探討………………………………………8 IV. 斷裂面特徵的研究……………………………………………11 參、研究目的…………………………………………………13 肆、材料與方法………………………………………………14 I. 實驗模具的製作………………………………………………14 II. 補綴物製作……………………………………………………14 II-1. 支柱的選擇……………………………………………………………14 II-2. 牙冠模型以及薄蓋冠(coping)的製作………………………………14 II-3. 鑄道及包埋……………………………………………………………15 II-4. 去蠟及鑄造……………………………………………………………15 II-5. 金屬瓷冠的製作………………………………………………………16 III. 實驗模模型的取得…………………………………………16 IV. 週期性疲勞測試……………………………………………17 IV-1. 應變計黏貼及位置……………………………………………………17 IV-2. 施力點的選擇及夾具固定……………………………………………17 IV-3. 裝置……………………………………………………………………17 IV-4. 測試機的設定…………………………………………………………17 V. 單次負載斷裂測試……………………………………………18 V-1. 施力點的選擇及夾具固定……………………………………………18 V-2. 測試機的設定…………………………………………………………18 VI. 測試順序………………………………………………………18 VII. 實驗資料分析………………………………………………19 VII-1. 週期性疲勞測試……………………………………………………19 VII-2. 單次負載斷裂測試…………………………………………………19 VIII. 掃描式電子顯微鏡觀察分析………………………………19 VIII-1. 操作過程……………………………………………………………19 VIII-2. 影像攝影與紀錄……………………………………………………19 IX. 統計方法……………………………………………………20 伍、結果………………………………………………………21 I. 週期性疲勞測試分析…………………………………………21 II. 敘述性統計……………………………………………………21 III. 綜合分析……………………………………………………22 IV. 掃描式電子顯微鏡觀察分析………………………………22 陸、討論………………………………………………………24 I. 應變應力分析法………………………………………………24 II. 實驗設計:施力、頻率、撞擊點及牙冠型態的選擇………25 III. 結果分析……………………………………………………26 IV. 掃描式電子顯微鏡觀察分析…………………………………26 V. 相關文獻比較分析……………………………………………28 柒、總結………………………………………………………31 捌、未來研究展望……………………………………………32 附圖…………………………………………………………33 附表…………………………………………………………70 參考文獻……………………………………………………74 附 圖 圖 1、金屬—陶瓷黏結失敗的分類………………………………………………33 圖 2、寬高長為30×30×84 mm的實驗模具………………………………………33 圖 3、Brånemark RP 1mm高的簡易式支台齒……………………………………34 圖 4、牙冠模型……………………………………………………………………34 圖 5、金屬薄蓋冠側面觀…………………………………………………………35 圖 6、薄蓋冠跟支台齒的密合情況………………………………………………35 圖 7、在析量碾磨機上將受測牙冠的高度碾磨至8 mm高……………………36 圖 8、實驗模型正面觀……………………………………………………………36 圖 9、剪裁過的應變計……………………………………………………………37 圖10、訂製的施力棒………………………………………………………………37 圖11、週期性疲勞測試正面觀……………………………………………………38 圖12、週期性疲勞測試裝置………………………………………………………38 圖13、單次負載斷裂測試裝置圖…………………………………………………39 圖14、單次負載斷裂測試近照觀…………………………………………………39 圖15、鑲瓷面厚度為1.5 mm,進行週期性疲勞測驗,測試開始0s-3s 的情況………………………………………………………………………40 圖16、鑲瓷面厚度為1.5 mm,進行週期性疲勞測驗,測試中段16750s 的情況………………………………………………………………………41 圖17、鑲瓷面厚度為1.5 mm,進行週期性疲勞測驗,測試結束33500s 的情況………………………………………………………………………41 圖18、鑲瓷面厚度為2.5 mm,進行週期性疲勞測驗,測試開始0s-3s 的情況……………………………………………………………………42 圖19、鑲瓷面厚度為2.5 mm,進行週期性疲勞測驗,測試中段16750s 的情況………………………………………………………………………42 圖20、鑲瓷面厚度為2.5 mm,進行週期性疲勞測驗,測試結束33500s 的情況………………………………………………………………………43 圖21、經過週期性疲勞測試,鑲瓷面表面所形成的凹洞………………………43 圖22、Group 1–樣品 1在單次負載測試下之原始資料折線圖…………………44 圖23、Group 1–樣品 2在單次負載測試下之原始資料折線圖…………………44 圖24、Group 1–樣品 3在單次負載測試下之原始資料折線圖…………………45 圖25、Group 1–樣品 4在單次負載測試下之原始資料折線圖…………………45 圖26、Group 1–樣品 5在單次負載測試下之原始資料折線圖…………………46 圖27、Group 1–樣品 6在單次負載測試下之原始資料折線圖…………………46 圖28、Group 1–樣品 7在單次負載測試下之原始資料折線圖…………………47 圖29、Group 1–樣品 8在單次負載測試下之原始資料折線圖…………………47 圖30、Group 1–樣品 9在單次負載測試下之原始資料折線圖…………………48 圖31、Group 1–樣品10在單次負載測試下之原始資料折線圖…………………48 圖32、Group 2–樣品 1在單次負載測試下之原始資料折線圖…………………49 圖33、Group 2–樣品 2在單次負載測試下之原始資料折線圖…………………49 圖34、Group 2–樣品 3在單次負載測試下之原始資料折線圖…………………50 圖35、Group 2–樣品 4在單次負載測試下之原始資料折線圖…………………50 圖36、Group 2–樣品 5在單次負載測試下之原始資料折線圖…………………51 圖37、Group 2–樣品 6在單次負載測試下之原始資料折線圖…………………51 圖38、Group 2–樣品 7在單次負載測試下之原始資料折線圖…………………52 圖39、Group 2–樣品 8在單次負載測試下之原始資料折線圖…………………52 圖40、Group 2–樣品 9在單次負載測試下之原始資料折線圖…………………53 圖41、Group 2–樣品10在單次負載測試下之原始資料折線圖…………………53 圖42、Group 3–樣品 1在單次負載測試下之原始資料折線圖…………………54 圖43、Group 3–樣品 2在單次負載測試下之原始資料折線圖…………………54 圖44、Group 3–樣品 3在單次負載測試下之原始資料折線圖…………………55 圖45、Group 3–樣品 4在單次負載測試下之原始資料折線圖…………………55 圖46、Group 3–樣品 5在單次負載測試下之原始資料折線圖…………………56 圖47、Group 3–樣品 6在單次負載測試下之原始資料折線圖…………………56 圖48、Group 3–樣品 7在單次負載測試下之原始資料折線圖…………………57 圖49、Group 3–樣品 8在單次負載測試下之原始資料折線圖…………………57 圖50、Group 3–樣品 9在單次負載測試下之原始資料折線圖…………………58 圖51、Group 3–樣品10在單次負載測試下之原始資料折線圖…………………58 圖52、Group 4–樣品 1在單次負載測試下之原始資料折線圖…………………59 圖53、Group 4–樣品 2在單次負載測試下之原始資料折線圖…………………59 圖54、Group 4–樣品 3在單次負載測試下之原始資料折線圖…………………60 圖55、Group 4–樣品 4在單次負載測試下之原始資料折線圖…………………60 圖56、Group 4–樣品 5在單次負載測試下之原始資料折線圖…………………61 圖57、Group 4–樣品 6在單次負載測試下之原始資料折線圖…………………61 圖58、Group 4–樣品 7在單次負載測試下之原始資料折線圖…………………62 圖59、Group 4–樣品 8在單次負載測試下之原始資料折線圖…………………62 圖60、Group 4–樣品 9在單次負載測試下之原始資料折線圖…………………63 圖61、Group 4–樣品10在單次負載測試下之原始資料折線圖…………………63 圖62、Groups 1、2、3、4各實驗組所得之箱型圖………………………………64 圖63、斷裂位置:只有陶瓷的斷裂………………………………………………65 圖64、斷裂位置:除了陶瓷斷裂外,也有小部份金屬的外露…………………65 圖65、全新的施力棒撞擊頭表面…………………………………………………66 圖66、經過疲勞測試後的施力棒撞擊頭表面……………………………………66 圖67、全新金屬瓷冠鑲瓷表的表面(500X)……………………………………67 圖68、經過疲勞測試後,金屬瓷冠鑲瓷面的表面(50X)………………………67 圖69、撞擊點中心位置(500X)…………………………………………………68 圖70、撞擊點邊緣位置(500X)…………………………………………………68 圖71、經過單次負載測試後,金屬瓷冠鑲瓷面的緃切面觀(20X)……………69 圖72、大量的河流圖案……………………………………………………………69 附 表 表 1、Groups 1、2、3、4各實驗組所有受測樣品之瓷抗斷裂值(kgf)……………70 表 2、Groups 1、2、3、4各實驗組所得之標準差統計表…………………………70 表 3、Groups 1、2、3、4各實驗組所有受測樣品在斷裂時撞擊頭之垂直 位置量(mm)………………………………………………………………70 表 4、Groups 1、2、3、4各實驗組標準差在相互比較之獨立樣本T檢定表……71 表 5、Thickness以及Dynload的標準差之獨立樣本T檢定表……………………71 表 6、迴歸分析結果之變異係數分析表……………………………………………72 表 7、瓷抗斷裂值(PFR)與二個參數(Thickness,DynLoad)間之 Pearson相關係數分析表……………………………………………………72 表 8、相關文獻對金屬瓷冠其瓷抗斷裂的實驗方法及結果的總整理……………73 | |
dc.language.iso | zh-TW | |
dc.title | 金屬瓷冠上不同鑲瓷面厚度對其陶瓷抗斷裂強度之探討 | zh_TW |
dc.title | Porcelain Fracture Resistance in Metal-Ceramic Crowns with Different Veneer Thickness | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 蕭裕源,王若松 | |
dc.subject.keyword | 抗斷裂,金屬瓷冠,鑲瓷面, | zh_TW |
dc.subject.keyword | fracture resistance,metal-ceramic crowns,veneer, | en |
dc.relation.page | 77 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2008-07-31 | |
dc.contributor.author-college | 醫學院 | zh_TW |
dc.contributor.author-dept | 臨床牙醫學研究所 | zh_TW |
顯示於系所單位: | 臨床牙醫學研究所 |
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