中南大学学报（医学版）
中南大學學報（醫學版）
중남대학학보（의학판）
JOURNAL OF CENTRAL SOUTH UNIVERSITY (MEDICAL SCIENCES)
2014年
11期
1181-1185
,共5页
苏征%侯本祥%方厂云%侯晓玫
囌徵%侯本祥%方廠雲%侯曉玫
소정%후본상%방엄운%후효매
根管冲洗%S形根管%Reciproc%气锁%死水区
根管遲洗%S形根管%Reciproc%氣鎖%死水區
근관충세%S형근관%Reciproc%기쇄%사수구
root canal irrigation%S-shaped root canal%Reciproc%vapor lock%stagnant water
目的：比较S形根管经Reciproc和Mtwo两种机用镍钛器械预备后的形态对根管冲洗效果的影响。方法：40个S形树脂模拟根管，随机分为2组(n=20)，分别使用Reciproc和Mtwo完成根管预备；使用30G侧方开口冲洗针头结合注射器，定速定量将蓝黑色墨汁注入预备后根管内，记录针头与根尖孔距离和气锁长度；使用25#/0.04锥度牙胶尖扰动方法排除气锁，记录气锁去除时间；抽取生理盐水对完全充盈后根管内的墨汁进行冲洗，记录冲洗后死水区长度。结果：Reciproc组针头与根尖孔距离为(4.276±0.221) mm，显著长于Mtwo组的(3.459±0.205) mm (P<0.05)；Reciproc组气锁长度为(4.472±0.230) mm，显著长于Mtwo组的(3.668±0.217) mm (P<0.05)。Reciproc组气锁去除时间显著短于Mtwo组[(10.13±1.79) s对比(15.29±2.15) s，P<0.05]。Reciproc组冲洗后死水区长度亦显著小于Mtwo组[(1.351±0.142)mm对比(2.245±0.206) mm，P<0.05]。结论：Reciproc与Mtwo对S形根管预备后，根管形态上的差异影响根管冲洗的效果， Reciproc预备后的冲洗效果优于Mtwo。
目的：比較S形根管經Reciproc和Mtwo兩種機用鎳鈦器械預備後的形態對根管遲洗效果的影響。方法：40箇S形樹脂模擬根管，隨機分為2組(n=20)，分彆使用Reciproc和Mtwo完成根管預備；使用30G側方開口遲洗針頭結閤註射器，定速定量將藍黑色墨汁註入預備後根管內，記錄針頭與根尖孔距離和氣鎖長度；使用25#/0.04錐度牙膠尖擾動方法排除氣鎖，記錄氣鎖去除時間；抽取生理鹽水對完全充盈後根管內的墨汁進行遲洗，記錄遲洗後死水區長度。結果：Reciproc組針頭與根尖孔距離為(4.276±0.221) mm，顯著長于Mtwo組的(3.459±0.205) mm (P<0.05)；Reciproc組氣鎖長度為(4.472±0.230) mm，顯著長于Mtwo組的(3.668±0.217) mm (P<0.05)。Reciproc組氣鎖去除時間顯著短于Mtwo組[(10.13±1.79) s對比(15.29±2.15) s，P<0.05]。Reciproc組遲洗後死水區長度亦顯著小于Mtwo組[(1.351±0.142)mm對比(2.245±0.206) mm，P<0.05]。結論：Reciproc與Mtwo對S形根管預備後，根管形態上的差異影響根管遲洗的效果， Reciproc預備後的遲洗效果優于Mtwo。
목적：비교S형근관경Reciproc화Mtwo량충궤용얼태기계예비후적형태대근관충세효과적영향。방법：40개S형수지모의근관，수궤분위2조(n=20)，분별사용Reciproc화Mtwo완성근관예비；사용30G측방개구충세침두결합주사기，정속정량장람흑색묵즙주입예비후근관내，기록침두여근첨공거리화기쇄장도；사용25#/0.04추도아효첨우동방법배제기쇄，기록기쇄거제시간；추취생리염수대완전충영후근관내적묵즙진행충세，기록충세후사수구장도。결과：Reciproc조침두여근첨공거리위(4.276±0.221) mm，현저장우Mtwo조적(3.459±0.205) mm (P<0.05)；Reciproc조기쇄장도위(4.472±0.230) mm，현저장우Mtwo조적(3.668±0.217) mm (P<0.05)。Reciproc조기쇄거제시간현저단우Mtwo조[(10.13±1.79) s대비(15.29±2.15) s，P<0.05]。Reciproc조충세후사수구장도역현저소우Mtwo조[(1.351±0.142)mm대비(2.245±0.206) mm，P<0.05]。결론：Reciproc여Mtwo대S형근관예비후，근관형태상적차이영향근관충세적효과， Reciproc예비후적충세효과우우Mtwo。
Objective: To evaluate effect of the morphology of simulated S-shaped root canals with Reciproc or Mtwo instruments on root canal irrigation. Methods: A total of 40 simulated S-shaped resin blocks were randomly divided into 2 groups (n=20), which was prepared by Reciproc or Mtwo. Blue ink was injected with constant speed and volume into the canals using 30G lateral opening syringe. hTe distance from needle tip to apex and vapor lock length were measured. A type of 25# 0.04 gutta-percha point was used to stir and remove the vapor lock. hTe time for removal of the vapor lock was recorded. Another syringe was used to inject saline into the canals and to measure the length of stagnant water. Results: hTe distance from needle tip to apex in the Reciproc group was signiifcantly longer than that in the Mtwo group [(4.276 ± 0.221) mm vs (3.459 ± 0.205) mm,P<0.05]. The vapor lock length in the Reciproc group was signiifcantly longer than that in the Mtwo group [(4.472 ± 0.230) mm vs (3.668±0.217) mm,P<0.05]. hTe time to remove vapor lock was signiifcantly shorter in the Reciproc group than that in the Mtwo group [(10.13 ± 1.79) s vs (15.29 ± 2.15) s,P<0.05]. The length of stagnant water was also shorter in the Reciproc group than that in the Mtwo group[(1.351 ± 0.142) mm vs (2.245 ± 0.206) mm,P<0.05]. Conclusion: hTe morphology of S-shaped root canal affects the root canal irrigation. hTe effect of root canal irrigated by Reciproc is better than that by Mtwo.
