Department of Prosthetic Dental Sciences, King Saud University, College of Dentistry, Riyadh, Saudi Arabia.
J Prosthodont Res. 2024 Jan 16;68(1):50-62. doi: 10.2186/jpr.JPR_D_22_00296. Epub 2023 Jun 7.
This study performed a systematic review to assess the biomechanical behavior of all-ceramic endowcrowns fabricated using computer-aided design and computer-aided manufacturing (CAD/CAM) for the restoration of endodontically treated teeth.
Three electronic databases (PubMed, Web of Science, and Scopus) were searched by operators specializing in health sciences databases searches to answer the following focused question based on the Population, Intervention, Comparison, Outcome (PICO) format: "Whether all-ceramic CAD/CAM endocrowns (Intervention) used to restore human endodontically treated teeth (Population) exhibit superior fracture resistance (Outcome) compared to non-CAD/CAM all-ceramic or non-ceramic endocrowns (Comparison)." The methodological quality assessment was performed using previously conducted systematic reviews of in vitro studies. The outcomes were expressed as the mean ± the standard deviation (SD).
Seventeen in vitro studies were included. The materials used in these studies were lithium disilicate glass-ceramic, polymer-infiltrated ceramic, zirconia-reinforced lithium silicate glass-ceramic, resin/hybrid nanoceramics, zirconia-reinforced lithium silicate ceramics, and feldspathic ceramic. The fracture resistance of endocrowns using different ceramics varied as follows: (i) IPS e.max CAD (2863.62 ± 51.47 N), (ii) Vita Enamic (1952 ± 378 N), (iii) Vita Suprinity (1859 ± 588 N), (iv) Cerasmart (1981 ± 169.5 N), (v) LAVA Ultimate (2484 ± 464 N), (vi) Celtra Duo (1618.30 ± 585.00 N), and (vii) Cerec Blocs (236.29 ± 32.12 N).
CAD/CAM all-ceramic endocrowns can withstand occlusal forces in the posterior region. All-ceramic endocrowns improve the fracture strength of endodontically treated teeth. Lithium disilicate crowns were commonly and successfully used in the included studies. More in vitro investigations that implement uniformity in material and measurement approaches are required to strengthen the evidence currently available in the literature regarding the durability of all-ceramic endocrowns.
本研究进行了系统评价，以评估使用计算机辅助设计和计算机辅助制造（CAD/CAM）制作的全瓷内冠修复根管治疗后牙齿的生物力学行为。
由专门从事健康科学数据库搜索的操作员在三个电子数据库（PubMed、Web of Science 和 Scopus）中进行搜索，以基于人群、干预、比较、结果（PICO）格式回答以下重点问题：“用于修复人类根管治疗后牙齿的全瓷 CAD/CAM 内冠（干预）是否表现出比非 CAD/CAM 全瓷或非陶瓷内冠（比较）更高的抗断裂能力（结果）。”使用之前进行的体外研究的系统评价来进行方法学质量评估。结果表示为平均值 ± 标准差（SD）。
共纳入 17 项体外研究。这些研究中使用的材料为锂硅玻璃陶瓷、聚合物渗透陶瓷、氧化锆增强锂硅玻璃陶瓷、树脂/混合纳米陶瓷、氧化锆增强锂硅陶瓷和长石陶瓷。使用不同陶瓷的内冠的抗断裂能力如下：（i）IPS e.max CAD（2863.62 ± 51.47 N），（ii）Vita Enamic（1952 ± 378 N），（iii）Vita Suprinity（1859 ± 588 N），（iv）Cerasmart（1981 ± 169.5 N），（v）LAVA Ultimate（2484 ± 464 N），（vi）Celtra Duo（1618.30 ± 585.00 N）和（vii）Cerec Blocs（236.29 ± 32.12 N）。
CAD/CAM 全瓷内冠可承受后牙区的咬合力量。全瓷内冠可提高根管治疗后牙齿的抗断裂强度。在纳入的研究中，通常使用二硅酸锂冠并获得成功。需要更多的体外研究，以统一材料和测量方法，从而加强目前文献中有关全瓷内冠耐久性的证据。
