Abdallah Reham M, Aref Neven S
Dental Biomaterials Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
Dental Biomaterials Department, Faculty of Dentistry, Horus University, New Damietta, Egypt.
Int J Dent. 2021 Jul 26;2021:9944909. doi: 10.1155/2021/9944909. eCollection 2021.
Nanotechnology offers considerable scope in dentistry to improve dental treatment, care, and prevention of oral diseases through the use of nanosized biomaterials. This study assessed the effect of incorporating alumina nanoparticles (AlO NPa) to the recently introduced alkasite-based restorative material (Cention N) on its mechanical properties and surface topographical features.
Alumina nanopowder was incorporated into the powder component of Cention N at 5 and 10% (w/w). The unblended powder was used as a control. Compressive strength was assessed using a universal testing machine. Surface microhardness and roughness were evaluated using the Vickers microhardness test and surface profilometer, respectively. Surface topography was inspected using a scanning electron microscope (SEM). Data were analyzed by ANOVA and Tukey's test ( < 0.05).
Incorporation of either 5 or 10% (w/w) AlO NPa into alkasite-based restorative materials (Cention N) increased both its compressive strength and surface microhardness. This increase was significant with the use of lower concentration AlO NPa (5% w/w). Meanwhile, there was an increase in surface roughness values of Cention N modified with either 5 or 10% (w/w) AlO NPa. This increase was only significant in the case of 10% (w/w) AlO NPa.
Incorporation of 5% (w/w) AlO NPa into the newly introduced alkasite-based restorative material (Cention N) seems to produce a promising restorative material with high compressive strength and surface hardness without adversely affecting its surface roughness properties. Thus, nanotechnology implementation into Cention N restorative material may be strongly helpful for a diversity of clinical applications.
纳米技术在牙科领域具有广阔的应用前景，可通过使用纳米尺寸的生物材料来改善牙科治疗、护理以及口腔疾病的预防。本研究评估了将氧化铝纳米颗粒（AlO NPa）添加到最近推出的碱土金属基修复材料（Cention N）中对其力学性能和表面形貌特征的影响。
将氧化铝纳米粉末以5%和10%（w/w）的比例添加到Cention N的粉末成分中。未混合的粉末用作对照。使用万能试验机评估抗压强度。分别使用维氏显微硬度测试和表面轮廓仪评估表面显微硬度和粗糙度。使用扫描电子显微镜（SEM）检查表面形貌。数据通过方差分析和Tukey检验进行分析（<0.05）。
将5%或10%（w/w）的AlO NPa添加到碱土金属基修复材料（Cention N）中，均可提高其抗压强度和表面显微硬度。使用较低浓度的AlO NPa（5% w/w）时，这种增加具有显著性。同时，用5%或10%（w/w）的AlO NPa改性的Cention N的表面粗糙度值有所增加。仅在10%（w/w）的AlO NPa情况下，这种增加才具有显著性。
将5%（w/w）的AlO NPa添加到新推出的碱土金属基修复材料（Cention N）中，似乎可产生一种具有高抗压强度和表面硬度的有前景的修复材料，且不会对其表面粗糙度性能产生不利影响。因此，将纳米技术应用于Cention N修复材料可能对多种临床应用有很大帮助。
