弹性义齿在单个前牙缺失临时修复中的应用  

Application of Valplast Dentures in the Temporary Restoration of Single Missing Anterior Tooth

作　　者：周正[1] 胡运东[1] 隋青松 阎念军 叶任 

机构地区：[1]中国医学科学院北京协和医学院北京协和医院口腔科,北京100730 [2]北京正和口腔门诊部,北京101100

出　　处：《中国医学科学院学报》2011年第3期334-336,共3页Acta Academiae Medicinae Sinicae

摘　　要：目的评估弹性义齿在单个前牙缺失临时修复中的应用价值。方法选择有临时修复需求的单个前牙缺失患者76例,根据患者自主选择临时修复体类型分为A、B两组,每组38例,A组用弹性义齿做临时修复体,B组用普通胶连活动义齿做临时修复体;同时以拔除单个前牙且无临时修复要求的患者38例作为对照组（C组）;分别于戴入临时义齿前（拔牙后2周）及进行永久修复前（拔牙后97~100 d）制取印模,并于模型上测量缺牙两侧邻牙临床冠高度,两次临床冠高度的差值为该牙唇侧牙龈萎缩高度。结果 A组患者缺失牙两侧邻牙临床冠高度的差值为0.5 mm（0.0~1.2 mm）,明显大于B组的0.0 mm（0.0~0.6 mm）（P〈0.05）和C组的0.0 mm（0.0~0.4 mm）（P〈0.05）;B、C两组间差异无统计学意义（P〉0.05）。结论将弹性义齿应用于单个前牙缺失的临时修复有导致缺失牙邻牙唇侧牙龈萎缩的危险,不适合应用于单个前牙缺失的临时修复。Objective To evaluate the value of valplast dentures in the temporary restoration of single missing anterior tooth.Methods Totally 76 patients who needed temporary restoration of single missing anterior tooth were involved and equally divided into two groups according to their own choices of procedures： group A,with valpast dentures as their temporary dentures and group B,with conventional removable partial dentures as their temporary dentures.Meanwhile,38 patients who had their single anterior teeth pulled out and did not need temporary dentures were enrolled as control group without any temporary restoration,and impressions were taken immediately before the temporary dentures were used（2 weeks after tooth extraction） and before the initiation of permanent restorations（97-100 days after tooth extraction）.The heights of clinical crowns of the adjacent teeth were also recorded twice from plaster models made from the impressions.The height of labial gingiva recession was calculated as the difference between the two heights recorded.Results The height differences of clinical crowns of the adjacent teeth was 0.5 mm（range： 0.0-1.2 mm） in group A,which was significantly larger than those in group B [0.0 mm;（range： 0.0-0.6 mm）]（P0.05） and in group C [0.0 mm;（range： 0.0-0.4 mm）]（P0.05）.However,the difference was not significant between group B and group C（P0.05）.Conclusion Application of valpast dentureas as temporary denture may cause labial gingival recession of the adjacent teeth,and therefore is not suitable for the restoration of single missing anterior tooth.

关 键 词：单个前牙缺失 弹性义齿 临时修复 

分 类 号：R783[医药卫生—口腔医学]