Digital post scan with three intraoral scanning systems – An in vitro study

IF 4.8 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of dentistry Pub Date : 2025-07-10 DOI:10.1016/j.jdent.2025.105971

Kay-Arne Walther, Sarah Marie Reich, Bernd Wöstmann, Jonas Adrian Helmut Vogler

{"title":"Digital post scan with three intraoral scanning systems – An in vitro study","authors":"Kay-Arne Walther, Sarah Marie Reich, Bernd Wöstmann, Jonas Adrian Helmut Vogler","doi":"10.1016/j.jdent.2025.105971","DOIUrl":null,"url":null,"abstract":"<div><h3>Objectives</h3><div>The aim of this study was to investigate the feasibility of digital post scan (DPS) with three different intraoral scanners (IOS) and to evaluate the light reaching the apical part of the preparation, considering the influence of the type of tooth and adjacent teeth.</div></div><div><h3>Methods</h3><div>50 clinical cases treated with post and core (PC) were used for 3D printing of the dataset of DPS with a hole at the apical part of the preparation by virtual construction and nesting. The models covered the sensor of a luxmeter leaving only the hole for measuring the amount of light during DPS (lux-value) with Primescan (PRI), Trios 5 (TRI) and Medit i700 (MED). Feasibility of DPS was evaluated by the percentage of surface deviating <50 µm from PRI (TRI/PRI, MED/PRI) in an analysis software. Moreover, a possible influence of the type of tooth that was treated with PC on DPS was evaluated. Statistical analysis was conducted using ANOVA with a significance level of <em>p</em> < 0.05.</div></div><div><h3>Results</h3><div>Highly significant differences (<em>p</em> < 0.001) were found for the light reaching the apical part of the preparation (lux-value) between PRI, TRI and MED (in decreasing order). Except from PRI, DPS was only feasible for TRI (100 % of surface deviation <50 µm) in three cases without adjacent teeth, showing highly significant differences between TRI/PRI and MED/PRI (<em>p</em> < 0.001). The type of tooth did not have a significant influence (<em>p</em> > 0.05).</div></div><div><h3>Conclusions</h3><div>The amount of emitted light with PRI linked to the larger capturing window in comparison to TRI and MED might increase the feasibility of DPS with PRI.</div></div><div><h3>Clinical Significance</h3><div>PRI can be recommended for DPS, whereas TRI and MED showed inferior results leading to unpredictable accuracy of fit of PC. The depth of focus given by the manufacturer of the IOS is not an indicator for the feasibility of DPS.</div></div>","PeriodicalId":15585,"journal":{"name":"Journal of dentistry","volume":"161 ","pages":"Article 105971"},"PeriodicalIF":4.8000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of dentistry","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0300571225004154","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}

引用次数: 0

Abstract

Objectives

The aim of this study was to investigate the feasibility of digital post scan (DPS) with three different intraoral scanners (IOS) and to evaluate the light reaching the apical part of the preparation, considering the influence of the type of tooth and adjacent teeth.

Methods

50 clinical cases treated with post and core (PC) were used for 3D printing of the dataset of DPS with a hole at the apical part of the preparation by virtual construction and nesting. The models covered the sensor of a luxmeter leaving only the hole for measuring the amount of light during DPS (lux-value) with Primescan (PRI), Trios 5 (TRI) and Medit i700 (MED). Feasibility of DPS was evaluated by the percentage of surface deviating <50 µm from PRI (TRI/PRI, MED/PRI) in an analysis software. Moreover, a possible influence of the type of tooth that was treated with PC on DPS was evaluated. Statistical analysis was conducted using ANOVA with a significance level of p < 0.05.

Results

Highly significant differences (p < 0.001) were found for the light reaching the apical part of the preparation (lux-value) between PRI, TRI and MED (in decreasing order). Except from PRI, DPS was only feasible for TRI (100 % of surface deviation <50 µm) in three cases without adjacent teeth, showing highly significant differences between TRI/PRI and MED/PRI (p < 0.001). The type of tooth did not have a significant influence (p > 0.05).

Conclusions

The amount of emitted light with PRI linked to the larger capturing window in comparison to TRI and MED might increase the feasibility of DPS with PRI.

Clinical Significance

PRI can be recommended for DPS, whereas TRI and MED showed inferior results leading to unpredictable accuracy of fit of PC. The depth of focus given by the manufacturer of the IOS is not an indicator for the feasibility of DPS.

查看原文本刊更多论文

三种口内扫描系统的数字后扫描-临床病例的体外研究。

目的：本研究的目的是探讨三种不同的口内扫描仪（IOS）的数字后扫描（DPS）的可行性，并评估光到达制备的根尖部分，考虑到牙齿类型和邻近牙齿的影响。方法：利用50例经桩核（PC）治疗的临床病例，采用虚拟构建和嵌套的方法，对DPS的根尖部分有孔的数据集进行3D打印。这些模型覆盖了luxmeter的传感器，只留下用于测量Primescan (PRI), Trios 5 （TRI）和Medit i700 （MED）在DPS （luxvalue）期间的光量的孔。以表面偏差百分比评价DPS的可行性结果：差异极显著（p0.05）。结论：与TRI和MED相比，PRI的发射光量与更大的捕获窗口可能增加了PRI联合DPS的可行性。临床意义：PRI可推荐用于DPS，而TRI和MED的结果较差，导致PC的拟合准确性不可预测。IOS制造商给出的对焦深度并不能作为DPS可行性的指标。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of dentistry 医学-牙科与口腔外科

CiteScore

7.30

自引率

11.40%

发文量

349

审稿时长

35 days

期刊介绍： The Journal of Dentistry has an open access mirror journal The Journal of Dentistry: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The Journal of Dentistry is the leading international dental journal within the field of Restorative Dentistry. Placing an emphasis on publishing novel and high-quality research papers, the Journal aims to influence the practice of dentistry at clinician, research, industry and policy-maker level on an international basis. Topics covered include the management of dental disease, periodontology, endodontology, operative dentistry, fixed and removable prosthodontics, dental biomaterials science, long-term clinical trials including epidemiology and oral health, technology transfer of new scientific instrumentation or procedures, as well as clinically relevant oral biology and translational research. The Journal of Dentistry will publish original scientific research papers including short communications. It is also interested in publishing review articles and leaders in themed areas which will be linked to new scientific research. Conference proceedings are also welcome and expressions of interest should be communicated to the Editor.