Vitapexペーストの根管内除去における従来のニードル潅注、パッシブ超音波潅注、ソニック潅注、XP-endoフィニッシャーの効果

Effect of conventional needle irrigation, passive ultrasonic irrigation, sonic irrigation and XP-endo finisher in removing intracanal Vitapex paste.

抄録

根管内のVitapexペースト除去における従来の針潅注、パッシブ超音波潅注、音波潅注、XP-endoフィニッシャーの効率を比較する。ヒトの単根歯の根管を調製し、Vitapexペーストでオブチュレーションした。2週間後、48歯を4群に無作為に割り付けた：通常針潅注(CNI)群、受動的超音波潅注(PUI)群、音波潅注(SI)群、XP-endoフィニッシャー(XP)群。Vitapexペーストを除去した後、4群の標本をマイクロCTでスキャンした。その結果、CNI群では他の3群よりも多くのペーストが残存していた（p<0.05）。PUI群、SI群、XP群では有意差はなかった（p>0.05）。また、3つの攪拌灌流法のいずれを用いても、残存Vitapexの大部分は先端3分の1に認められ、中央3分の1には少量であった。

To compare the efficiency of conventional needle irrigation, passive ultrasonic irrigation, sonic irrigation and XP-endo Finisher in removing Vitapex paste from root canals. The root canals of human single-rooted teeth were prepared and obturated with Vitapex paste. After 2 weeks, the 48 teeth were randomly allocated into four groups: conventional needle irrigation (CNI) group, passive ultrasonic irrigation (PUI) group, sonic irrigation (SI) group and XP-endo Finisher (XP) group. The specimens of four groups were scanned using a micro-computed tomography after the Vitapex pastes was removed. The results showed that more residual paste was left in the CNI group than in the other three groups (p < 0.05). There was no significant difference among the PUI, SI and XP group (p > 0.05). And, the majority of the residual Vitapex was found in the apical third, with a small amount in the middle third after using any of the three agitated irrigation techniques.