牙科树脂基材料的耐磨性比较及表面分析

Comparative abrasive wear resistance and surface analysis of dental resin-based materials.

作者信息

Nayyer Maleeha, Zahid Shahreen, Hassan Syed Hammad, Mian Salman Aziz, Mehmood Sana, Khan Haroon Ahmed, Kaleem Muhammad, Zafar Muhammad Sohail, Khan Abdul Samad

机构信息

Department of Dental Materials, Army Medical College, National University of Medical Sciences, Rawalpindi, Pakistan.

Department of Prosthodontics, Armed Forces Institute of Dentistry, National University of Medical Sciences, Rawalpindi, Pakistan.

出版信息

Eur J Dent. 2018 Jan-Mar;12(1):57-66. doi: 10.4103/ejd.ejd_380_17.

OBJECTIVE

The objective of this study was to assess the surface properties (microhardness and wear resistance) of various composites and compomer materials. In addition, the methodologies used for assessing wear resistance were compared.

MATERIALS AND METHODS

This study was conducted using restorative material (Filtek Z250, Filtek Z350, QuiXfil, SureFil SDR, and Dyract XP) to assess wear resistance. A custom-made toothbrush simulator was employed for wear testing. Before and after wear resistance, structural, surface, and physical properties were assessed using various techniques.

RESULTS

Structural changes and mass loss were observed after treatment, whereas no significant difference in terms of microhardness was observed. The correlation between atomic force microscopy (AFM) and profilometer and between wear resistance and filler volume was highly significant. The correlation between wear resistance and microhardness were insignificant.

CONCLUSIONS

The AFM presented higher precision compared to optical profilometers at a nanoscale level, but both methods can be used in tandem for a more detailed and precise roughness analysis.