Agave Cantula fiber-reinforced biocomposites of hydroxyapatite/shellac as a dental material

ABSTRACT

Dentures are prosthetic devices built to imitate the function of natural teeth and are commonly produced from materials, such as metal, porcelain, and acrylic resin. Although those made from porcelain have good strength, their manufacture requires high skill and accuracy, which results in high selling price. This has led to the development of inexpensive natural biomaterials, as a suitable replacement in the dentistry field. Therefore, this study aims to explore the use of biocomposite (Bovine Hydroxyapatite (BHA)/Agave Cantula fiber/shellac) as a dental material. The mixture of BHA/Agave Cantula fiber was in various ratios, namely, 100/0, 90/10, 80/20, and 70/30 (%wt), where shellac was used as a binder at a proportion of 10% wt. The specimens were compacted at 20 bar for 10 min, and then sintered at 200°C for 2 h. The results of the FTIR test showed that the functional groups were hydroxyl, carbonate, phosphate, and methylene. Moreover, the results of the Vickers hardness test and density rate were recorded as the highest at the 30:70% variation, at (124.03 HVN) and (1,661 g/cm³), respectively. These results showed that biocomposite has the potential to be used as a dental material after further development.

摘要

义齿是为了模仿天然牙齿的功能而制造的修复设备, 通常由金属、陶瓷和丙烯酸树脂等材料制成. 虽然这些瓷器具有很好的强度, 但它们的制造需要很高的技能和精度, 这导致了很高的售价. 这导致了廉价天然生物材料的发展, 作为牙科领域的合适替代品. 因此, 本研究旨在探索生物复合材料 (牛羟基磷灰石 (BHA)/龙舌兰纤维/虫胶) 作为牙科材料的应用。BHA/龙舌兰悬臂纤维的混合物具有不同的比例, 即100/0、90/10、80/20和70/30% (重量%), 其中虫胶以10%重量的比例用作粘合剂. 试样在20 bar下压实10分钟, 然后在200°C下烧结2小时. FTIR测试结果表明, 其官能团为羟基、碳酸盐、磷酸盐和亚甲基. 此外, 维氏硬度试验结果和密度率在30:70%变化时记录为最高, 分别为 (124.03 HVN) 和 (1661 g/cm³). 这些结果表明, 经过进一步开发, 生物复合材料具有作为牙科材料的潜力.

KEYWORDS:

• Hydroxyapatite
• Agave Cantula fiber
• shellac
• dental materials

关键词:

• 羟基磷灰石
• 龙舌兰角纤维
• 虫胶
• 牙科材料

Highlights

1. Dental material biocomposites made from Agave Cantala fiber reinforced hydroxyapatite/shellac.

2. The results of biocomposites test have been compared with an acrylic resin, as a dental material.

3. Based on the mechanical properties, the composites are potentially further developed as dental materials by adding a hardener.

Acknowledgments

A part of this work was sponsored by the Hibah Penelitian Unggulan Sebelas Maret University, Surakarta, Indonesia, via research grant no: 260/UN27.22/HK.07.22/2021. The author would like to thank Mechanical Engineering Dept UNS for using the facility to do this work.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Universitas Sebelas Maret [260/UN27.22/HK.07.22/2021].