采用不同粘接方法粘接的由CAD/CAM树脂基陶瓷制成的研磨和3D打印超薄咬合贴面的抗折性。
Fracture resistance of milled and 3D printed ultra-thin occlusal veneers made of CAD/CAM resin-based ceramics cemented by variable luting approaches.
作者信息
Elkaffas Ali A, Alshehri Abdullah, Alqahtani Abdullah Ali, Almudahi Abdulellah F, Alanazi Khalid K, Alhalabi Feras Abdulqader, Abuelqomsan Mohammed Ali, Alqahtani Ali R
机构信息
Dept. of Conservative Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University, Alkharj Po (box) 11942, Alkharj, Saudi Arabia.
Dept. of Operative Dentistry, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
出版信息
BMC Oral Health. 2025 Jul 19;25(1):1204. doi: 10.1186/s12903-025-06543-9.
BACKGROUND
Pathological tooth wear is becoming an increasingly serious societal issue. Occasionally, occlusal veneers can stand in for more conventional prosthetic restorations like crowns, inlays, or onlays. Thus, this study aimed to assess the fracture resistance of resin-based ceramic ultra-thin occlusal veneers made by milling and 3D printing, cemented using various luting techniques, following thermomechanical cyclic loading.
METHODS
The study utilized milled resin-based ceramic (Cerasmart) and 3D printed resin-based ceramic (VarseoSmile Crown plus A3). Sixty specimens were manufactured (n = 60) and allocated into two groups (n = 30) based on the material: milled or 3D printed resin-based ceramic. Subsequently, each group was further divided into three subgroups (n = 10) according to the luting approach. Specimens were luted using adhesive resin cement (RC) (RelyX Ultimate), bulk-fill flowable composite (BF) (Surefil SDR™flow), and preheated bulk-fill nano-hybrid resin composite (PN) (Tetric EvoCeram). The supporting materials were anatomical 3D printed resin dies (Rigid 10 K). Fracture resistance was evaluated with a universal testing machine, followed by a statistical analysis of the results.
RESULTS
The fracture resistance was shown to be significantly affected by both the material type (p < 0.001) and the luting approach (p < 0.001). Statistically significant difference was detected between milled and 3-D printed groups (P = 0.001). A statistically significant difference in fracture resistance was observed between the milled PN group and the RC milled group (P = 0.009). Furthermore, a significant difference was found in fracture resistance between the 3D printed PN and the 3D printed RC groups (P = 0.008).
CONCLUSIONS
The resin cement variable strongly correlates with the fracture resistance of 3D printed and milled resin-based ceramics. The highest fracture resistance was observed in milled resin-based ceramics with PN, while the lowest was noted in 3D printed resin-based ceramics with BF.
背景
病理性牙齿磨损正成为一个日益严重的社会问题。偶尔，咬合贴面可以替代牙冠、嵌体或高嵌体等更传统的修复体。因此，本研究旨在评估通过铣削和3D打印制作的树脂基陶瓷超薄咬合贴面在热机械循环加载后，采用各种粘结技术粘结时的抗折强度。
方法
本研究使用了铣削树脂基陶瓷（Cerasmart）和3D打印树脂基陶瓷（VarseoSmile Crown plus A3）。制作了60个试件（n = 60），并根据材料分为两组（n = 30）：铣削或3D打印树脂基陶瓷。随后，每组根据粘结方法进一步分为三个亚组（n = 10）。试件使用粘结树脂水门汀（RC）（RelyX Ultimate）、大容量流动复合树脂（BF）（Surefil SDR™flow）和预热大容量纳米混合树脂复合材料（PN）（Tetric EvoCeram）进行粘结。支撑材料为解剖学3D打印树脂代型（Rigid 10 K）。使用万能试验机评估抗折强度，随后对结果进行统计分析。
结果
结果表明，抗折强度受材料类型（p < 0.001）和粘结方法（p < 0.001）的显著影响。在铣削组和3D打印组之间检测到统计学显著差异（P = 0.001）。在铣削PN组和RC铣削组之间观察到抗折强度存在统计学显著差异（P = 0.009）。此外，在3D打印PN组和3D打印RC组之间发现抗折强度存在显著差异（P = 0.008）。
结论
树脂水门汀变量与3D打印和铣削树脂基陶瓷的抗折强度密切相关。在使用PN的铣削树脂基陶瓷中观察到最高抗折强度，而在使用BF的3D打印树脂基陶瓷中观察到最低抗折强度。
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