The evaluation of dental adhesives augmented with magnetic nanoparticles

Carina Sonia Neagu; Andreea Codruta Cojocariu; Cristian Zaharia; Mihai Romînu; Meda-Lavinia Negruţiu; Virgil-Florin Duma; Cosmin Sinescu

doi:10.1117/12.2613382

5 May 2022 The evaluation of dental adhesives augmented with magnetic nanoparticles

Carina Sonia Neagu, Andreea Codruta Cojocariu, Cristian Zaharia, Mihai Romînu, Meda-Lavinia Negruţiu, Virgil-Florin Duma, Cosmin Sinescu

Author Affiliations +

Proceedings Volume 12170, Advances in 3OM: Opto-Mechatronics, Opto-Mechanics, and Optical Metrology; 121700G (2022) https://doi.org/10.1117/12.2613382
Event: Advances in 3OM: Opto-Mechatronics, Opto-Mechanics, and Optical Metrology, 2021, Timisoara, Romania

Abstract

An important challenge in today’s dentistry is to create sturdy and aesthetic restorations. Dental research aims to create restorations with long-term durability and optical properties similar to healthy natural teeth. Recent works have shown that the magnetic handling of a dental adhesive doped with magnetic nanoparticles (MNPs) improves the adhesion between the composite and the dentin. This study presents the preparation of dental adhesives loaded with iron oxide (Fe₃O₄) NPs incorporated in SiO₂ shells, and their applications in the creation of dental veneers. Extracted incisors were prepared for veneering and divided in two groups: Group A was bonded with normal adhesive and Group B was bonded with the augmented adhesive, in the presence of a permanent magnet. The samples were analyzed using stereomicroscopy, optical coherence tomography (OCT), and scanning electron microscopy (SEM), the latter combined with energy dispersive analysis of X-rays (EDAX). All techniques enabled the visualization of the veneer-adhesive and adhesive-dentin interfaces: (i) stereomicroscopy demonstrated that the adhesive layer was thinner for Group B and revealed conglomerates of MNPs in the adhesive layer; (ii) OCT enabled a visualization of the marginal closure, as well as of defects in the two interfaces; (iii) SEM provided a high-resolution image of the adhesive layer, whereas EDAX furnished an elemental analysis of the augmented adhesive. In conclusion, under the action of an external magnetic field, MNPs can penetrate deeper into the demineralized structure of the tooth, reducing the thickness of the adhesive layer and, thereby, decreasing the probability of microleakage.

Citation Download Citation

Carina Sonia Neagu, Andreea Codruta Cojocariu, Cristian Zaharia, Mihai Romînu, Meda-Lavinia Negruţiu, Virgil-Florin Duma, and Cosmin Sinescu "The evaluation of dental adhesives augmented with magnetic nanoparticles", Proc. SPIE 12170, Advances in 3OM: Opto-Mechatronics, Opto-Mechanics, and Optical Metrology, 121700G (5 May 2022); https://doi.org/10.1117/12.2613382

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Adhesives

Teeth

Magnetism

Composites

Optical coherence tomography

Scanning electron microscopy

Interfaces

Show All Keywords

Keywords/Phrases

Search In:

Publication Years