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題 名 | 超音波與退展式修形技術根尖殘屑量之比較=Comparison of the Amount of Extruded Apical Debris Between Ultrasonic and Step-back Filing Techniques |
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作 者 | 陳惠玲; 吳長奇; 盧心玉; 呂盈洲; | 書刊名 | 中華牙醫學雜誌 |
卷 期 | 17:4 1998.12[民87.12] |
頁 次 | 頁235-241 |
分類號 | 416.9492 |
關鍵詞 | 超音波裝置; 退展式修形技術; 推出根尖之殘屑; Ultrasonic device; Step-back technique; Extruded apical debris; |
語 文 | 中文(Chinese) |
中文摘要 | 本報告是比較退展式修形技術與超音波裝置兩種清創方式,對於根管修形操作時 被推出根尖孔外殘屑之重量加以評估,並比較三位不同臨床經驗操作者問的差異。收集七十 八顆第一類型根管且根管管曲度小於十五度的牙齒,將其分成二組,由三位操作者執行。所 有實驗牙做適當地根管窩洞修形,並以短於根尖孔 1mm 的距離作為工作長度。 根管清創後 ,收集推出根尖孔外的錢屑於事先稱重的棉花上,乾燥後,再以微量天平稱得殘屑的重量, 最後以 ANOVA 及 L-test 來做統計分析。 由結果顯示,二組實驗組在推出殘屑重量方面之 比較,不具統計上顯著差異,且無論以何種方式來清創根管,均無法完全避免殘屑推出根尖 孔外。此外,若比較不同操作者問的差異性時,顯示出在退展式修形技術組中,主治醫師與 實習醫師之間有顯著差異。 |
英文摘要 | A conventional step-back filing technique was compared with an ultrasonic instrumentation technique to determine the amount of debris pushed through the apical foramen during root canal preparation. Seventy-eight single-canal extracted human teeth with mature apices, and one apical foramen with an apical curvature less than 15 degrees were divided into two groups. The teeth were opened for endodontic access and a #15 file passed 1mm beyond the apex to ensure canal patency. All teeth were prepared 1-mrn short of the apical foramen. Debris extruded during instrumentation was collected onto preweighted cotton. Following desiccation, weight determinations were made on an analytical electrobalance. The mean weights of extruded debris for the two groups were compared by ANOVA and t-test. No significant difference was demonstrated between the step-back and ultrasonic filing techniques. However, neither technique was totally effective in preventing the extrusion of debris during root canal instrumentation. |
本系統中英文摘要資訊取自各篇刊載內容。