【摘 要】
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Purpose: The aim of this study was to evaluate the clinical effects of obturators with different retention systems(clasp,ERA,ball,bar)in patients with half-maxillary defects,including retention,stabil
【机 构】
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School and hospital of stomatology Wuhan university
【出 处】
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2014xi`an Conference of International Society for Maxillofac
论文部分内容阅读
Purpose: The aim of this study was to evaluate the clinical effects of obturators with different retention systems(clasp,ERA,ball,bar)in patients with half-maxillary defects,including retention,stability and durability.Methods: 20 patients were included and divided into four groups corresponding to four systems(each n=5).In each patient,abutment teeth adjacent to defects were splinted with crowns.Retention and stability were evaluated by modified Kapur scale,and the durability of abutment teeth and attachments were detected by clinical examination one year later after delivery.Results: After delivery,retention scores of four groups were not significantly different.Stability of clasp group and ERA group were significantly better than the other two groups.One year after delivery,retention of clasp group decreased rapidly and were significantly different with that of ERA group.Conclusion: Due to the resilient characteristic,the ERA attachment is a reliable choice to restore halfmaxillary defects.
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