气动超声手机处理肩台对氧化锆全冠边缘密合性的影响

The influence of disposing the shoulder by the dental pneumatic ultrasonic hand-piece on the edge sealing property of the zirconium dioxide crown

选取15个前磨牙,随机分成3组,每组5颗。MANI TF-13车针、TR13-EF车针和气动超声手机3组分别处理肩台,制作二氧化锆全冠,观察微渗漏状况,并进行评估。气动超声手机精修肩台抗微渗漏的能力优于普通肩台处理方式。

15 extracted premolars were selected and randomly divided into 3 groups, with 5 in each group. MANI TF-13 bur,TR13-EF bur and the dental pneumatic ultrasonic hand-piece were respectively used to dispose the shoulder. 15 Zirconium dioxide full crowns were made. The shoulder marginal microleakage was observed by staining method. Dental pneumatic ultrasonic hand-piece showed the best anti-mic- roleakage effect in shoulder refinement.