Comparison of Compressive Strength of Five Hydraulic Cements
Journal Title: Journal of Dental School Shahid Beheshti University of Medical Sciences - Year 2018, Vol 36, Issue 1
Abstract
Objectives: Maintaining pulp vitality is a main goal in restorative dentistry. Introduction of pulp capping agents paved the way to eliminate the shortcomings of these materials and obtain successful restorations. On the other hand, nanotechnology is an emerging field of science with increasing use in dental materials. This study sought to assess the effect of addition of nano-TiO2, nano-SiO2 and nano-Al2O3 on compressive strength of five hydraulic cements. Methods: In this in vitro, experimental study, three experimental formulations of nano hybrid MTA, MTA Angelus and MTA Angelus+ nano-oxide particles cements were placed in molds measuring 4±0.1mm in internal diameter and 6±0.1mm in height made of stainless steel (ISO9917-1). Ten samples were fabricated for each of the five groups of materials. Sound samples were stored at 37°C and 95±5% humidity and were subjected to compressive strength testing in a universal testing machine at a crosshead speed of 0.5mm/minute after 24 hours and one month. Two-way ANOVA, one-way ANOVA and independent samples t-test were used for comparison of compressive strength of groups at different time points. Results: The highest compressive strength belonged to MTA Angelus+ nanohydroxyapatite and nano-hybrid MTA C at 24 hours and 30 days, respectively. The lowest compressive strength belonged to nano-hybrid MTA B and MTA Angelus at 24 hours and 30 days, respectively (P<0.05). Conclusion: Addition of nanoparticles affected the compressive strength of cements. Compressive strength significantly increased over time in all groups.
Authors and Affiliations
Vagharedin Akhavan Zanjani, Seyedeh Mahsa Sheikh-Al-Eslamian, Kasra Tabari
Keywords
Related Articles
- EP ID EP368616
- DOI -
- Views 76
- Downloads 0
Coincidence of Compound Odontoma and Cemento Ossifying Fibroma; A Rare Case Report
Objective: Cemento-ossifying fibroma defines as a relative rare osteogenic neoplasm of the jaw. This tumor includes fibrous and osseous components. Odontoma is the most common odontogenic tumor containing enamel ,dentin...
Periodontal Involvement in Leukocyte Adhesion Deficiency: Review of the Literature and a Case Report
Objective: Leukocyte adhesion deficiency (LAD) is a rare, autosomal recessive inherited disorder; LAD-I which is the most common type, occurs due to mutations in the CD18 gene. This mutation down-regulates the expression...
Comparing Post-Obturation of Apical Microleakage Following the Use of Different Intracanal Chelators
Objectives: Different chelators may be used during root canal treatment, offering various advantages including lubricant effect inside the canal and smear layer removal. However, chelator residues in narrow root canals c...
Effect of Slice Thickness on the Accuracy of Linear Measurements Made on Cone Beam Computed Tomography Images (InVitro)
Objective: Cone beam computed tomography (CBCT) is applied for the imaging of the maxillofacial and dental structures, particularly for surgical treatments and dental implants. The aim of this study was to assess the eff...
Immunohistochemical Expression of PCNA and Ki-67 in Periapical Granuloma and Radicular Cyst
Objectives: Periapical Granulomas (PGs) and Radicular Cysts (RCs), as the most common odontogenic lesions have yet unclear pathogenesis. This study was aimed to compare PCNA and Ki-67 expression in PGs and RCs and evalua...