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題 名 | 掃描式電子顯微鏡觀察窩隙牙釉質處理對封劑穿入及密合之影響=An SEM Study of the Effects of Enamel Treatments on Penetration and Adaptation of Sealants into Pits and Fissures |
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作 者 | 吳孟倫; 葉淑端; 林光勳; | 書刊名 | 中華牙醫學雜誌 |
卷 期 | 18:1 1999.03[民88.03] |
頁 次 | 頁29-40 |
分類號 | 416.98 |
關鍵詞 | 窩隙封劑; 氣動研磨技術; 牙釉質整型術; 牙本質黏著系統; Pit and fissure sealant; Air-abrasive technique; Enameloplasty; Dentin adhesive system; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以掃描式電子顯微鏡觀察,牙釉質經各種處理方式後,對封劑在小窩及裂 溝中的穿入及密合程度之影響,研究的目的在於探討是否可藉由各種不同的牙釉質處理方式 ,以增進封劑在裂隙中的穿入及密合,進而提高其固位性。實驗選用 24 顆拔除的人類恆臼 齒,牙齒本身並無齲蝕的窩洞及填補材料,依不同的牙釉質處理方式分為 5 組:( A )以 50 μ m 氧化鋁粒子,80psi 的壓力作氣動研磨,並依有無酸蝕分別分為 A1 及 A2 小組, ( B )以磨針在窩隙部分略作修形後酸蝕,( C )僅作酸蝕, ( D )酸蝕後以牙本質黏 著系統處理。封填後,電子顯微鏡觀察切面結果顯示,氣動研磨技術及牙釉質整型術能較有 效地清潔並擴大裂隙的開口,使封劑在窩隙中能有較佳的深入及密合。在氣動研磨技術,未 酸蝕的樣本中,可觀察到在牙釉質 -- 封劑介面,普遍地呈現裂縫狀,此結果顯示本實驗所 使用的氣動研磨,並無法取代封填技術中的酸蝕處理。 |
英文摘要 | A scanning electron microscopic investigation was conducted to observe the penetration and adaptation of sealants into occlusal fissures prepared with various enamel treatments. The aims of this study were to determine if sealant penetration and adaptation were improved by the various enamel treatments, to get a higher retention rate of sealant in the fissure. The 24 extracted human permanent molar and premolar teeth used in this study were free of cavitation caries and previously placed restorations They were separated into the following enamel treatment groups: (A) air abraded with 50 μ m aluminum oxide particles, at 80 psi air pressure, and divided into A1 and A2 subgroups (with and without acid etching, respectively). (B) fissure preparation using a bur followed by acid etching. (C) acid etching alone. (D) acid etching followed by a dentin bonding system for priming and adhesion. After sealant application, the results demonstrated that the air-abrasive technique and enameloplasty cleaned and enlarged the fissure more effectively, thus allowing deeper penetration and better adaptation of sealants into pits and fissures. Generalized gap formations were observed along the enamel-sealant interface of all specimens which were air abraded without acid etching. This indicate that air abrasion cannot eliminate the need for acid etching in the sealing technique. |
本系統中英文摘要資訊取自各篇刊載內容。