A clinical study of Palodent posterior teeth matrix system

目的 建立后牙邻面成形系统的临床评价体系,并用其评价Palodent和环周成形系统对后牙的临床应用效果.方法 将符合纳入标准的101个邻(牙合)面涧按简单随机法分为试验组和对照组,充填时分别采用Palodent和环周成形系统.单个牙充填者79个,成对牙充填者22个.由同一名主治医师完成所有邻(牙合)面洞的充填工作.由临床医师在充填后即刻用探针检查充填体悬突情况,在备洞后、充填后即刻和术后1周复查时用牙线检查邻接触区恢复情况;由患者在术后即刻和1周复查时填写问卷,了解食物嵌塞、术中舒适度和患牙挤胀感等情况.取充填侧的半口模型,在2名主治医师统一模型评价标准后,由其中1人为所有模型评分.结果 建立了一套由问卷调查、临床检查和模型评价组成的评价体系,共计9项指标.应用该体系评价PaJodent和环周成形系统,发现2组在问卷调查指标和悬突发生率上无统计学差异;但Palodent成形系统能使后牙邻(牙合)面洞树脂充填时获得更紧密的邻接触关系.对成对后牙邻骀面洞进行充填时,Palodent成形系统的边缘嵴成形效果优于环周成形系统.结论 对成对后牙的邻(牙合)面洞进行充填时,Palodent成形系统优于环周成形系统.To set up a clinical evaluation method for the matrix system, and compare two matrix systems, Palodent and circumferential, by this method.101 molars and premolars with class II cavities, which were suitable for resin filling without shift and incline of the adjacent teeth, were randomly divided into study group (Palodent) and control group (circumferential). There were 79 single cavities and 22 paired cavities. One doctor-in-charge completed all cavities filling. Probes were used to test overhang of the filling. Dental floss was used to detect the proximal contact index before and after cavity preparing and immediately and one week after cavity filling. Questionnaires were filled in by patients immediately and one week afrer cavity filling. The tooth models of the filling side were taken, then two doctors-in-charge were responsible for establishing the model evaluation index and one of them conducted the evaluation for all of the models. SPSS 14.0 software was used to analyze the data.An evaluation system including questionnaire, clinical examination and tooth model evaluation was set up. There were nine indexes in this system. Moreover, this clinical evaluation system was used in this study. It was found that there were no differences on questionnaire and overhang indexes between the two groups. Palodent matrix system got tighter proximal contact than traditional circumferential matrix system. When filling the paired posterior teeth, Palodent matrix system formed better marginal ridge than circumferential matrix system.Palodent matrix system is better than circumferential matrix system in filling the paired posterior teeth.PubMed中文核心期刊要目总览(PKU)中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)0144-482