Effect of Storage Conditions and Time on the Dimensional Stability of 3D Printed Surgical Guides: An In Vitro Study

IF 4.8 1区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Implants Research Pub Date : 2024-09-25 DOI:10.1111/clr.14362

Panagiotis Ntovas, Laurent Marchand, Barmak Basir, Yukio Kudara, Marta Revilla-Leon, Wael Att

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引用次数: 0

Abstract

Purpose

To evaluate the dimensional stability over time of additively manufactured surgical templates, fabricated by different resins, and stored by different methods.

Materials and Methods

Using a 3D printer with DLS technology and two different resins (Surgical Guide (SG)-WhipMix and Key Guide (KG)-KeystoneIndustries), 96 surgical guides were additively manufactured. The guides were stored in three different environments: directly exposed to sunlight (S₁), in normal interior room conditions (S₂), and in darkness (S₃). The guides were digitally scanned immediately after fabrication and post-processing, and after 1, 3, and 6 months of storage. For each group, the mean deviation of the root mean square (RMS) between guide's intaglio surface, as well as the axial deviation between sleeves' housings were calculated.

Results

The mean axial variations of angular axis deviation of sleeves' housings ranged between 0.09° and 3.99°. The mean deviation of the RMS discrepancy in guide's intaglio ranged from 0.1 to 0.18 mm. Variations were significant (p < 0.001) only for the S₁ group and only for SG material. After 3 months, an additional storage time of 3 months did not have any further effect on dimensional stability.

Conclusions

Within the limitations of the present study, storage time of a surgical guide for up to 3 months after manufacturing, as well as printing material can significantly affect surgical guide's dimensional stability, when they are exposed to direct or indirect sunlight conditions. Storage of guides in a dark environment is recommended in order to avoid an additional source of error in computer-guided surgery workflows.

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储存条件和时间对 3D 打印手术导板尺寸稳定性的影响：体外研究

材料和方法使用具有 DLS 技术的 3D 打印机和两种不同的树脂（Surgical Guide (SG)-WhipMix 和 Key Guide (KG)-KeystoneIndustries），以添加法制造了 96 个手术导板。导板被存放在三种不同的环境中：直接暴露在阳光下（S1）、正常室内条件下（S2）和黑暗中（S3）。导板在制作和后处理后立即进行数字扫描，并在存放 1 个月、3 个月和 6 个月后进行扫描。结果套筒外壳角轴偏差的平均轴向变化范围为 0.09° 至 3.99°。导轨凹面的均方根差异的平均偏差在 0.1 至 0.18 毫米之间。只有 S1 组和 SG 材料的差异明显（p < 0.001）。结论在本研究的限制条件下，当手术导板暴露在阳光直射或间接照射的条件下时，其制造后长达 3 个月的储存时间以及印刷材料会显著影响其尺寸稳定性。建议将导板存放在黑暗环境中，以避免计算机辅助手术工作流程中出现额外的误差源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical Oral Implants Research 医学-工程：生物医学

CiteScore

7.70

自引率

11.60%

发文量

149

审稿时长

3 months

期刊介绍： Clinical Oral Implants Research conveys scientific progress in the field of implant dentistry and its related areas to clinicians, teachers and researchers concerned with the application of this information for the benefit of patients in need of oral implants. The journal addresses itself to clinicians, general practitioners, periodontists, oral and maxillofacial surgeons and prosthodontists, as well as to teachers, academicians and scholars involved in the education of professionals and in the scientific promotion of the field of implant dentistry.