用陶填充树脂制造的添加和减去制造技术制造的植入式支冠的准确性:一个体外研究
Yolanda Natali Raico Gallardo1, Fiorella Sueldo Guevara Ratzeburg2, Gabriel Nima3
1Assistant Professor, Department of Prosthodontics, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pa; and Professor, Laboratory of Innovation in Digital Dentistry, Universidad Científica del Sur (UCSUR), Lima, Peru.
The Journal of prosthetic dentistry
|February 10, 2026
概括
与数字光投影 (DLP) 和立体石刻 (SLA) 等增材制造 (AM) 方法相比,减法制造 (SM) 对植入物支的皇冠产生了最高的准确性. DLP显示精度最低,特别是在边缘区域.
科学领域:
- 牙科材料科学 牙科材料科学
- 制造技术 制造技术 制造技术
- 生物材料工程 生物材料工程
背景情况:
- 增材制造 (AM) 技术提供了进步,但与减量制造 (SM) 相比,它面临着局限性.
- 这些限制对于具有复杂几何形状的预制支柱至关重要,影响恢复的适应性和保留性.
- 确保牙假体的准确性对于临床成功至关重要.
研究的目的:
- 为了比较SM和两个AM方法 (DLP和SLA) 的准确性 (真实性和精度).
- 评估单个植入式支冠的整体准确性和特定区域 (口腔,近端,尖端,洞穴,内角,边缘).
- 为了确定最准确的制造方法,详细的牙科修复.
主要方法:
- 使用了三种制造方法:数字光投影 (DLP),立体石版 (SLA) 和减法制造 (SM).
- 每组创建了15个标本,用于预制支柱上的植入式支冠.
- 使用口腔内扫描和计量软件评估准确性,以比较设计和制造的皇冠,分析六个关键区域的偏差.
主要成果:
- 减法制造 (SM) 的真实性和精度明显高于SLA和DLP (P<.001).
- 与SLA和SM相比,数字光投影 (DLP) 在边缘区域的真实性和精度较低 (P<.001).
- 所有测试方法都在临床上可接受的内部适合范围内实现了切割精度.
结论:
- 减法制造 (SM) 是生产单个植入物支冠状的最准确方法.
- 数字光投影 (DLP) 的精度最低,特别是在关键边缘区域.
- 虽然DLP有局限性,但所有方法都产生了可接受的,适合临床应用的切入材料.
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