Flexural Strength, Elastic Modulus and Remineralizing Abilities of Bioactive Resin-Based Dental Sealants

Polymers

Majed M. Alzahrani¹  Ahmed A. Asseri¹  Mana’a S. Alabbas¹  Khalid U. Alsomaly¹  Abdullah A. AlMansour¹  Alhareth Abdulaziz Aljouie²  Maria Salem Ibrahim³  Jehan AlHumaid³ 

[1] College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia;College of Dentistry, Qassim University, Buraydah 52571, Saudi Arabia;Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia;

关键词: sealants;    bioactive;    dental resin;    remineralization;    demineralization;   

DOI  :  10.3390/polym14010061

来源: DOAJ

【 摘 要 】

Objective: To assess the remineralizing abilities and compare the flexural strength and elastic modulus of different bioactive pit and fissure sealants. Materials and Methods: Human enamel samples were randomly and blindly sealed with one of the following bioactive materials: BioCoat (Bc), ACTIVA KIDS (Av) and BeautiSealant (Bu). Seal-it (Si) was used as a non-bioactive sealant beside a control blank (B) group with no sealant. The sealed samples were subjected to a pH-cycling model (7 days of demineralization–remineralization cycles). The enamel surface hardness change (SHC), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) and polarized light microscopy were used to assess the remineralizing abilities of the studied sealants. Flexural strength and elastic modulus were also assessed following the ISO 4049 protocols. One-way analysis of variance (ANOVA) was used to analyze the results. Results: Bc sealant showed the highest FS and EM (p < 0.05). The contact with Bc and Bu sealants showed significantly lower %SHL (p < 0.05) in comparison to the other. These findings were supported by the results of SEM-EDX and polarized imaging by showing higher percentages of calcium and phosphate ions with the former sealants and thinner demineralized enamel bands. Conclusion: In this study, Bc showed the highest flexural strength. Bc and Bu sealants outperformed the other studied sealants in terms of their remineralization abilities.

【 授权许可】

Unknown