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頁籤選單縮合
題名 | 氣動研磨技術合併使用磷酸酸蝕對牙釉質的侵蝕效應=The Etching Effects of Enamel Treated by Air-abrasion Combined with Phosphoric Acid Etching Technique |
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作者 | 林玉珠; 彭玉秋; | 書刊名 | 牙醫學雜誌 |
卷期 | 19:2 1999.06[民88.06] |
頁次 | 頁57-66 |
分類號 | 416.96 |
關鍵詞 | 氣動研磨技術; 牙釉質; 酸蝕; Air-abrasion; Enamel; Acid etching; |
語文 | 中文(Chinese) |
中文摘要 | 本研究的目的是評估氣動研磨技術合併酸蝕後牙釉質被侵犯的效應。共收集完整 的人類上顎門牙 65 顆,依牙釉質表面處理方式不同隨意分成五組。第一組以磷酸酸蝕牙釉 質表面 60 秒。第二組以 27 μ氧化鋁噴射牙釉質 10 秒。第三組以 50 μ氧化鋁噴射牙釉 質表面 10 秒。 第四組以 27 μ氧化鋁噴射牙釉質表面 10 秒, 再以磷酸酸蝕牙釉質表面 60 秒。 第五組以 50 μ氧化鋁噴射牙釉質表面 10 秒,再以磷酸酸蝕牙釉質表面 60 秒。 第二至五組依氣動研磨處理時壓力的不同各分三小組。檢體經由掃描式電子顯微鏡觀察經過 處理後牙釉質表面以及牙釉質與樹脂介面結合的情形。結果指出,以不同壓力及氧化鋁顆粒 噴射後牙釉質皆顯現結構不明顯的粗糙表面,亦可見微裂痕的出現。第二組及第三組中,與 複合樹脂的結合介面存有寬約 1 至 5 μ的空隙;第四組及第五組中,則無明顯的空隙存在 於結合介面。第三類型酸蝕效應可見於第四組及第五組牙釉質表面。本研究建議使用氣動研 磨技術時,必須合併使用磷酸酸蝕,方可與複合樹脂產生良好結合。 |
英文摘要 | The purpose of this study was to evaluate effects of enamel treated by air-abrasion combined with phosphoric acid etching technique. A total of 65 intact human maxillary incisors were randomly divided into 5 groups according to different surface treatment procedures. In group Ⅰ, enamel surface was etched with 37% phosphoric acid for 60 seconds. In group Ⅱ, enamel surface was air-abraded by 27 μ aluminum oxide particles for 10 seconds. In group Ⅲ, enamel surface was air-abraded by 50 μ aluminum oxide particles for 10 seconds. In group Ⅳ, enamel surface was air-abraded by 27 μ aluminum oxide particles for 10 seconds and then acid etched for 60 seconds. Teeth in group Ⅱ to Ⅴ had been divided into 3 subgroups according to different air pressure at 80, 120 and 160 psi respectively. Samples were subjected to scanning electronic microscopic analysis to evaluate the surface morphology of treated enamel and the interface between composite resin and enamel. Results demonstrated that amorphous rough surface at enamel was created by air-abrasion with different particle sizes of aluminum oxide and air pressure. Microcracks could also be found. A 1-5 μ gap placed at omposte resin-enamel interface existed in groups Ⅱ and Ⅲ. No definite discontinuity at the interface could be detected in groups Ⅳ and Ⅴ. A type Ⅲ etching pattem on enamel of group Ⅳ and Ⅴ was also seen. This study suggests that acid etching on enamel is necessary after treatment by air-abrasion. |
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