激光选区熔化钛合金可摘局部义齿支架的临床应用

Clinical application of laser selective melting titanium alloy for removable partial denture frameworks

目的探讨激光选区熔化(selective laser melting,SLM)钛合金可摘局部义齿支架应用于临床时的效果。方法选取本院就诊的牙列缺损患者共20例,按照制作可摘局部义齿钛合金支架的方法不同而分为2组,SLM组与铸造组。对支架的成功率、就位率、义齿的咀嚼效率以及义齿性口炎发生率分别进行比较。结果数据使用SPSS20.0进行统计分析。结果 SLM组支架的成功率为100.00%,高于铸造组支架的成功率90.00%(P<0.001)。SLM组支架的就位率低于铸造组支架的就位率(P<0.05)。SLM组义齿的咀嚼效率高于铸造组义齿的咀嚼效率(0.783±0.030 vs. 0.699±0.037,P<0.001)。SLM组义齿使用一年的义齿性口炎发生率(10.00%)明显低于铸造组义齿的义齿性口炎发生率(30.00%)(P<0.001)。结论利用SLM制作可摘局部义齿支架在咀嚼效率与降低义齿性口炎发生率优于传统铸造法,可以满足临床使用要求,但跨度大的支架精度有待提高。

ObjectiveTo investigate the effect of denture stomatitis of selective laser melting(SLM) titanium alloy for removable partial denture frameworks.MethodsTwenty patients with dentition defects in our hospital were divided into two groups according to the different methods of creating a removable partial denture framework: the SLM group and casting group. The success rate, placement rate, masticatory efficiency and incidence of denture stomatitis were compared. Experimental data were analyzed with SPSS20.0.Results The success rate of the SLM framework group was100.00%, which was higher than that of the casting group(90.00%)(P < 0.01). The rate of framework placement in the SLM group was slightly lower than that in the casting group(P < 0.05). The masticatory efficiency of the SLM group was higher than that of the casting group(0.783 ± 0.030 vs. 0.699 ± 0.037, P < 0.001). The incidence of denture stomatitis(10.00%) in the SLM group was significantly lower than that in the casting group(30.00%)(P < 0.001).Conclusion SLM is superior to the traditional casting method in mastication efficiency and reducing the incidence of denture stomatitis. This method can meet the clinical requirements, but the accuracy of the long-term stent needs to be improved.