全口康复中4种切面铸型数字方法转移咬合关系的真实性。

IF 4.3 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Prosthetic Dentistry Pub Date : 2025-02-01 DOI:10.1016/j.prosdent.2023.07.011

Hanqi Gao DDS, PhD , Xiaoqiang Liu DDS, PhD , Ti Zhou DDS , Jianguo Tan DDS, PhD

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引用次数: 0

摘要

问题陈述:一个准确的数字工作流程，将咬合关系从全弓诊断过渡修复转移到全弓牙齿准备，在全口腔康复中是必不可少的。然而，对数字交叉安装方法的精度研究较少。目的:本体外研究的目的是比较4种断面铸造数字交叉安装方法在转移全口康复咬合关系中的准确性。材料和方法:采用上颌和下颌骨解剖型假体构建全牙弓预备体和诊断性临时修复体，用于体外全口康复。设计了四种断面型模:前型(AR)、后型(PO)、单侧型(UL)和三脚架型(TR)。使用口外扫描(EOS)和口内扫描(IOS)获得中间数字断层模型，将其与诊断性临时修复体和确定模型交叉注册以转移咬合关系。通过评估牙齿距离偏差和下颌三维(3D)偏差来确定准确性。采用Kruskal-Wallis检验分析4种断面铸型扫描方法的差异，采用Mann-Whitney U检验分析2种扫描方法的差异(α= 0.05)。结果:4种切面铸型方法的咬合关系转移正确率差异有统计学意义(p < 0.05)，但TR-EOS的整体距离偏差是PO-EOS的一半。TR-EOS组和PO-EOS组的差异均小于AR-EOS组和UL-EOS组(p < 0.05)。TR-EOS组和PO-EOS组的RMS均小于AR-EOS组和AR-EOS组(p)。结论:EOS和IOS采用三脚架切面铸造数字法均能准确转移全口咬合关系。

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Trueness of 4 sectional-cast digital methods for transferring the interocclusal relationship in complete mouth rehabilitation

Statement of problem

An accurate digital workflow for transferring the interocclusal relationship from complete arch diagnostic interim restorations to complete arch tooth preparations is essential in complete mouth rehabilitation. However, research on the accuracy of digital cross-mounting methods is lacking.

Purpose

The purpose of this in vitro study was to compare the trueness of 4 sectional-cast digital cross-mounting methods in transferring the interocclusal relationship for complete mouth rehabilitation.

Material and methods

Maxillary and mandibular anatomic typodonts were used to build complete arch tooth preparations and diagnostic interim restorations for complete mouth rehabilitation in vitro. Four sectional casts were designed: an anterior cast (AR), a posterior cast (PO), a unilateral cast (UL), and a tripod cast (TR). Both extraoral scanning (EOS) and intraoral scanning (IOS) were used to obtain intermediate digital sectional casts, which were cross-registered with diagnostic interim restorations and definitive casts to transfer the interocclusal relationship. Trueness was determined by assessing tooth distance deviation and mandibular 3-dimensional (3D) deviation. Differences among the 4 sectional-cast methods were analyzed with the Kruskal-Wallis test, and differences between the 2 scanning methods were analyzed with the Mann-Whitney U test (α=.05).

Results

Significant differences in the trueness of interocclusal relationship transfer were observed among the 4 sectional-cast methods (P<.05). Regarding tooth overall distance deviation, TR-EOS found no statistically significant difference compared with PO-EOS (P>.05), but TR-EOS had half the overall distance deviation of PO-EOS. Both TR-EOS and PO-EOS had smaller deviations than the AR-EOS and UL-EOS groups (P<.05). TR-IOS had a smaller distance deviation than the AR-IOS, PO-IOS, and UL-IOS groups (P<.05). The overall distance deviation of EOS was significantly smaller than that of IOS in the TR and PO groups (P<.05). Regarding mandibular 3D deviation, TR-EOS found no statistically significant difference but had half the root mean square (RMS) of 3D deviation compared with the PO-EOS groups (P>.05). Both TR-EOS and PO-EOS groups had a smaller RMS than the AR-EOS and groups (P<.05). The TR-IOS group had a smaller RMS than the AR-IOS, PO-IOS, and UL-IOS groups (P<.05). The 3D deviation of EOS was significantly smaller than that of IOS in the PO group (P<.05).

Conclusions

Both EOS and IOS with the tripod sectional-cast digital method accurately transferred the interocclusal relationship for complete mouth rehabilitation.

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来源期刊

Journal of Prosthetic Dentistry 医学-牙科与口腔外科

CiteScore

7.00

自引率

13.00%

发文量

599

审稿时长

69 days

期刊介绍： The Journal of Prosthetic Dentistry is the leading professional journal devoted exclusively to prosthetic and restorative dentistry. The Journal is the official publication for 24 leading U.S. international prosthodontic organizations. The monthly publication features timely, original peer-reviewed articles on the newest techniques, dental materials, and research findings. The Journal serves prosthodontists and dentists in advanced practice, and features color photos that illustrate many step-by-step procedures. The Journal of Prosthetic Dentistry is included in Index Medicus and CINAHL.