The Effect of Angulation and Scan Body Position on Scans for Implant-Treated Edentulism: A Clinical Simulation Study

IF 3.7 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Implant Dentistry and Related Research Pub Date : 2025-03-03 DOI:10.1111/cid.70001

Georgia Vasileiadi, Evangelos Ximinis, Katia Sarafidou, Theodora Slini, Fotis Gogomitros, George Andreas Athanasiadis, Olga Naka, Alexandros Tsouknidas, Athina Bakopoulou, Maria Kokoti

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引用次数: 0

Abstract

Introduction

The acquisition of digital impressions has become an integral part of clinical dentistry. The purpose of the present clinical simulation study was to evaluate the accuracy of digital impressions for maxillary full-arch implant-supported prostheses using two modern intraoral scanners with different acquisition technologies.

Material and Methods

Two models of edentulous maxilla, with six implants at positions #16,14,12,22,24,26 (FDI World Dental Federation System, ISO 3950) or #3,5,7,10,12,14 (Universal Numbering system) were digitally designed, and 3D-printed in resin material (Asiga DentaMODEL, Australia). In the first scenario, all implants were parallelized, while in the second, implants #12/#7 and #22/#10 had a 20° angulation buccally, while implants #16/#3 and #26/#14 20° angulation distally. The models were scanned with two different intraoral scanners, Trios3 (3Shape, Denmark) and CS3600 (Carestream Dental, USA). Linear (x, y, z axes—top point) and angular deviations (x, y, z axes—Δφ) were assessed. Statistical analysis was performed using Kolmogorov–Smirnov tests (significance at p < 0.05).

Results

Implant angulation showed a significant impact on accuracy, while the two scanners showed statistically significant differences. CS3600 demonstrated superior trueness, while Trios3 superior precision in both clinical scenarios. In the first clinical scenario a predominant occurrence of angular deviations was observed, while in the second scenario both angular and linear deviations were recorded. Scan body position also influenced scanning outcomes, with the last scan body captured demonstrating higher deviations.

Conclusion

Both scanners provided acceptable accuracy in the acquisition of digital impressions. Implant angulation and scan body position significantly affected trueness and precision. Clinicians should carefully consider implant angulations in full-arch implant restorations, as well as the scanning protocol.

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角度和扫描体位对种植治疗的全牙症扫描的影响：临床模拟研究

数字印痕的获取已经成为临床牙科不可或缺的一部分。本临床模拟研究的目的是利用两种具有不同采集技术的现代口内扫描仪评估上颌全弓种植体支持义齿数字印模的准确性。材料和方法采用数字设计和3d打印树脂材料（Asiga DentaMODEL，澳大利亚），分别在16、14、12、22、24、26号位置（FDI世界牙科联合会系统，ISO 3950）和3、5、7、10、12、14号位置（通用编号系统）各有6个种植体的两个无牙颌模型。在第一种情况下，所有种植体都是平行的，而在第二种情况下，种植体#12/#7和#22/#10的颊部角度为20°，而种植体#16/#3和#26/#14的远端角度为20°。使用Trios3 （3Shape，丹麦）和CS3600 （Carestream Dental，美国）两种不同的口腔内扫描仪对模型进行扫描。评估线性（x, y， z轴-顶点）和角偏差（x, y， z轴-Δφ）。采用Kolmogorov-Smirnov检验进行统计学分析（p < 0.05）。结果种植体成角对准确性有显著影响，两种扫描器差异有统计学意义。在两种临床情况下，CS3600表现出更高的准确性，而Trios3表现出更高的准确性。在第一种临床情况下，观察到主要发生的角度偏差，而在第二种情况下，记录了角度和线性偏差。扫描体位置也影响扫描结果，最后捕获的扫描体显示出更高的偏差。结论两种扫描仪在数字印痕的采集精度均可接受。植入体角度和扫描体位置对准确性和精度有显著影响。临床医生应仔细考虑全弓种植体修复的种植体角度，以及扫描方案。

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来源期刊

Clinical Implant Dentistry and Related Research 医学-牙科与口腔外科

CiteScore

6.00

自引率

13.90%

发文量

103

审稿时长

4-8 weeks

期刊介绍： The goal of Clinical Implant Dentistry and Related Research is to advance the scientific and technical aspects relating to dental implants and related scientific subjects. Dissemination of new and evolving information related to dental implants and the related science is the primary goal of our journal. The range of topics covered by the journals will include but be not limited to: New scientific developments relating to bone Implant surfaces and their relationship to the surrounding tissues Computer aided implant designs Computer aided prosthetic designs Immediate implant loading Immediate implant placement Materials relating to bone induction and conduction New surgical methods relating to implant placement New materials and methods relating to implant restorations Methods for determining implant stability A primary focus of the journal is publication of evidenced based articles evaluating to new dental implants, techniques and multicenter studies evaluating these treatments. In addition basic science research relating to wound healing and osseointegration will be an important focus for the journal.