光固化树脂充填后可能出现不同程度的牙髓反应。
The dental pulp reaction will appear in different degree after the light curing composite is filled.
在成形过程中压力容易消除粘结体充填后的凝固缺陷。
The solidifying defects after filling can be easily erased by the pressure during the forming.
结论短期内冠根向预备技术比逐步后退技术成形的根管更有利于根管充填后根尖孔的密封。
Conclusion it is better apical sealing ability in root canals prepared by crown-down technique than step-back technique.
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