【摘要】 目的探讨压接作用在蜡熔模制作时对蜡熔模边缘适合性的影响。方法制作模拟后牙全冠外形的标准代型及圆管,然后分别采用压接法(实验组)和滴蜡法(对照组)各制作12个蜡熔模,测量蜡熔模制作完成尚未脱离代型、脱离代型0.5h、脱离代型24h后蜡熔模与代型的垂直边缘缝隙和水平边缘缝隙,计算完全边缘缝隙。结果蜡熔模在制作完成尚未脱离代型时,实验组与对照组的完全边缘缝隙之间有统计学差异(P<0.05)。放置0.5h与放置24h相比较,实验组、对照组蜡熔模的完全边缘缝隙均有统计学差异(P<0.01)。结论压接技术可提高蜡熔模的边缘适合性,蜡熔模的放置时间会影响蜡熔模的边缘适合性。更多还原

【Abstract】 Objective To study the influence of cervical settling method on marginal accuracy of wax patters. Methods 24 wax patterns were made on the standard cast specimens and round capsules of which twelve patters were made with the method of cervical settling(experiment group), twelve patters were made with the method of wax dripping(control group). Marginal accuracy of patterns were measured before sublation, sublation half an hour and twenty-four hours. Results The results revealed that marginal accuracy had significant difference between the cervical settling methods and wax dripping methods(P<0.05). There was significant difference between the cervical settling methods measured after half an hour and twenty-four hours(P<0.01). There was also significant difference between the wax dripping methods measured after half an hour and twenty-four hours(P<0.01). Conclusion Wax patterns with the method of cervical settling can improve marginal accuracy of patterns. The marginal accuracy of wax patters are influenced by the existing time.更多还原