中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2011年
z1期
19-21
,共3页
根管充填%桩道预备%微渗漏%根管封闭剂
根管充填%樁道預備%微滲漏%根管封閉劑
근관충전%장도예비%미삼루%근관봉폐제
Root canal obturation%Post space preparation%Apical microleakage%Root canal sealants
目的 研究经3种根尖封闭剂充填后不同桩道预备时机对根管治疗术后根尖区微渗漏的影响.方法 将60颗单根管离体牙,经逐步后退法预备根管,采用简单随机分组的方法分为A、B、C3组,每组20颗,每组采用不同的根管封闭材料,用相同的牙胶尖冷侧方加压技术进行根管充填,对3组标本分别进行即刻和延迟1周桩道预备,每组抽取2颗牙为阴性对照不进行桩道预备,观察根尖部染料微渗漏情况.结果 即刻预备条件下A组和B组较C组具有较好的根尖封闭作用,微渗漏值差异无统计学意义(P＞0.05)；延迟预备组中B组产生的微渗漏较其他两组高(2.03±0.33) mm,差异具有统计学意义(P＜0.05).C组即刻预备条件下比延迟预备产生较大微渗漏但差异无统计学意义,其余两组延迟预备产生的微渗漏明显大于即刻预备组(P＜0.05).结论 即刻桩道预备能保护根尖封闭效果,选择具有粘接性能的根管封闭剂封闭效果较好.
目的 研究經3種根尖封閉劑充填後不同樁道預備時機對根管治療術後根尖區微滲漏的影響.方法 將60顆單根管離體牙,經逐步後退法預備根管,採用簡單隨機分組的方法分為A、B、C3組,每組20顆,每組採用不同的根管封閉材料,用相同的牙膠尖冷側方加壓技術進行根管充填,對3組標本分彆進行即刻和延遲1週樁道預備,每組抽取2顆牙為陰性對照不進行樁道預備,觀察根尖部染料微滲漏情況.結果 即刻預備條件下A組和B組較C組具有較好的根尖封閉作用,微滲漏值差異無統計學意義(P＞0.05)；延遲預備組中B組產生的微滲漏較其他兩組高(2.03±0.33) mm,差異具有統計學意義(P＜0.05).C組即刻預備條件下比延遲預備產生較大微滲漏但差異無統計學意義,其餘兩組延遲預備產生的微滲漏明顯大于即刻預備組(P＜0.05).結論 即刻樁道預備能保護根尖封閉效果,選擇具有粘接性能的根管封閉劑封閉效果較好.
목적 연구경3충근첨봉폐제충전후불동장도예비시궤대근관치료술후근첨구미삼루적영향.방법 장60과단근관리체아,경축보후퇴법예비근관,채용간단수궤분조적방법분위A、B、C3조,매조20과,매조채용불동적근관봉폐재료,용상동적아효첨랭측방가압기술진행근관충전,대3조표본분별진행즉각화연지1주장도예비,매조추취2과아위음성대조불진행장도예비,관찰근첨부염료미삼루정황.결과 즉각예비조건하A조화B조교C조구유교호적근첨봉폐작용,미삼루치차이무통계학의의(P＞0.05)；연지예비조중B조산생적미삼루교기타량조고(2.03±0.33) mm,차이구유통계학의의(P＜0.05).C조즉각예비조건하비연지예비산생교대미삼루단차이무통계학의의,기여량조연지예비산생적미삼루명현대우즉각예비조(P＜0.05).결론 즉각장도예비능보호근첨봉폐효과,선택구유점접성능적근관봉폐제봉폐효과교호.
Objective To investigate the effect of immediate and delayed post space preparation on the integrity of the apical seal.Methods Seventy extracted human single-rooted human teeth were biomechanically prepared using the step-back technique.They were randomly assigned to 2 experimental groups of 35 teeth each and filled with two root canal sealants (AHplus and Cortisomol) separately.Thirty teeth in each group were prepared and the other five served as negative controls.Apical microleakage was evaluated with ink dye penetration.Results Cortisomol group showed better apical sealing effect than did other groups when teeth were prepared immediatlly,and microleakage values showed no statistically significant difference ( P ＞ 0.05 ),Vitapex group generated more microleakage than did the other Two groups with delayed preparation ( 2.03 ± 0.33 mm),the difference was statistically significant ( P ＜ 0.05 ).Cortisomol group had a greater microleakage than other groups did when prepared immediately,but the difference was not statistically significant.The other two groups showed significantly greater microleakage with delayed preparation than they did with immediate preparation group ( P ＜ 0.05 ).Conclusions Immediate post space preparation creates less microleakage than delayed preparation does.
