■数字印模是一种很有前途的修复技术。然而,缺乏患者舒适度的影响因素,冠质量的证据主要是基于体外研究。这项双盲临床试验的目的是比较两种不同的口内扫描仪(IOSs)制造全瓷单冠(SC)的患者满意度和冠准确性。
■招募了需要后牙支撑SC的参与者。每位患者均接受了金属工业研发中心(MIRDC)IOS和CarestreamCS3500随机序列的象限扫描。扫描后,参与者必须填写一份6项感知问卷,该问卷基于5分Likert量表,针对两个IOS.将这两个数据发送到牙科实验室以制造整体式焦硅酸锂SC。冠精度,包括边缘配合,近端接触,咬合接触,和一般满意度是根据5分制获得的。
■共调查了15名40冠的参与者(每组20个SC)。关于患者满意度,MIRDC和CarestreamIOSs的总分差异无统计学意义(23.6±3.79vs23.1±4.28,P=0.36).在表冠精度方面,MIRDC组和Carestream组的总分和所有评估参数均存在显着差异(6.1±1.41vs13.3±3.75,P<0.001)。
■MIRDC和CarestreamIOSs均可在口内扫描期间提供良好的患者满意度。CarestreamIOS获得了用于制造全陶瓷SC的更好的准确性。
UNASSIGNED: The digital impression is a promising technique in prosthodontic treatment. However, the influencing factors of patient comfort is lacking, and the evidence of crown quality is mostly based on in vitro studies. The purpose of this double-blinded clinical trial was to compare the patient satisfaction and crown accuracy of two different intraoral scanners (IOSs) for the fabrication of all-ceramic single crowns (SCs).
UNASSIGNED: Participants in need of posterior tooth-supported SCs were enrolled. Each patient received quadrant scan by both the Metal Industries Research and Development Centre (MIRDC) IOS and Carestream CS3500 in a random sequence. After scanning, participants had to fill in a 6-item perception questionnaire that based on 5-point Likert scale for two IOSs. Both data were sent to a dental laboratory to fabricate the monolithic lithium disilicate SCs. The crown accuracy including marginal fit, proximal contact, occlusal contact, and general satisfaction were accessed based on 5-point scale.
UNASSIGNED: A total of 15 participants with 40 crowns (20 SCs in each group) were investigated. Regarding to patient satisfaction, there was no statistically significant difference in total score between MIRDC and Carestream IOSs (23.6 ± 3.79 vs 23.1 ± 4.28, P = 0.36). In terms of crown accuracy, there was significantly different in total score and all the evaluated parameters between MIRDC and Carestream groups (6.1 ± 1.41 vs 13.3 ± 3.75, P < 0.001).
UNASSIGNED: Both MIRDC and Carestream IOSs can provide good patient satisfaction during intraoral scanning. The Carestream IOS obtains better accuracy for the fabrication of all-ceramic SCs.