Clinical efficacy of a novel 3D-printed zirconia single crown: A randomized controlled trial

IF 5.5 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of dentistry Pub Date : 2025-08-28 DOI:10.1016/j.jdent.2025.106069

Fangyuan Cai , Yujie Wang , Jimin Jiang, Weijie Wu, Hongye Lu, Tianning Ye, Yi Zhou , Fuming He

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引用次数: 0

Abstract

Objectives

This randomized controlled trial (RCT) aims to evaluate the clinical efficacy of Nano Particle Jetting (NPJ)-printed zirconia single crowns compared to Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM)-milled crowns over a 12-month follow-up period.

Methods

A total of 43 participants with 48 posterior teeth (vital or endodontically treated) were included. Randomization and allocation concealment were conducted using a computer-generated list and sealed envelopes, assigning 24 teeth to each group. Assessed parameters included the World Dental Federation (FDI) criteria as the primary outcome, Pink Esthetic Score (PES), White Esthetic Score (WES), periodontal parameters, and patient satisfaction.

Results

The FDI criteria showed no significant differences between NPJ-printed and CAD/CAM-milled crowns in aesthetic, functional, and biological parameters (p > 0.05). NPJ-printed crowns demonstrated excellent marginal adaptation, achieving a clinical success rate of 95.8 % versus 91.6 % in the CAD/CAM group. One fracture was recorded in each group. No significant differences were demonstrated in most PES/WES and periodontal parameters (p > 0.05). However, NPJ-printed crowns had a higher PES at baseline and 12-month follow-up visit (p = 0.02), and a statistically significant increase in plaque index was observed in CAD/CAM-milled crowns during the 6-month follow-up (p = 0.04). Patients in both groups reported a significant improvement in oral health-related quality of life (p < 0.01) and maintained high levels of satisfaction (p > 0.05).

Significance

This 12-month RCT demonstrates that NPJ-printed zirconia single crowns are clinically comparable to CAD/CAM-milled crowns, suggesting that NPJ printing could be a viable alternative for dental crown fabrication. Future research should focus on long-term follow-up studies to further validate these findings. (Registration number: ChiCTR2400089790)

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新型3d打印氧化锆单冠的临床疗效：一项随机对照试验。

目的：本随机对照试验（RCT）旨在评估纳米颗粒喷射（NPJ）打印氧化锆单冠与计算机辅助设计/计算机辅助制造（CAD/CAM）磨铣冠在12个月的随访期间的临床疗效。方法：共纳入43名参与者，48颗后牙（有生牙或根管治疗）。使用计算机生成的名单和密封的信封进行随机分组和分配隐藏，每组分配24颗牙齿。评估参数包括世界牙科联合会（FDI）标准作为主要结果，粉红色美学评分（PES），白色美学评分（WES），牙周参数和患者满意度。结果：FDI标准显示npj打印和CAD/ cam铣冠在美学、功能和生物学参数上没有显著差异（p>0.05）。npj打印的冠具有出色的边缘适应能力，临床成功率为95.8%，而CAD/CAM组为91.6%。每组记录1例骨折。大多数PES/WES和牙周参数差异无统计学意义（p < 0.05）。然而，在基线和12个月的随访中，npj打印的冠具有更高的PES (p=0.02)，并且在6个月的随访中，CAD/ cam研磨的冠的斑块指数有统计学意义的增加（p=0.04）。两组患者均报告口腔健康相关生活质量显著改善（p0.05）。意义：这项为期12个月的随机对照试验表明，NPJ打印的氧化锆单冠在临床上与CAD/ cam研磨的冠相当，这表明NPJ打印可能是牙冠制造的可行选择。未来的研究应侧重于长期随访研究，以进一步验证这些发现。（注册号：ChiCTR2400089790）。

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

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.