Volume 109, Issue 11 pp. 2392-2406
RESEARCH ARTICLE

Antimicrobial and self-crosslinking potential of experimentally developed dioctadecyldimethyl ammonium bromide and riboflavin dentin adhesive

Umer Daood

Corresponding Author

Umer Daood

Clinical Dentistry, Faculty of Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia

Correspondence

Dr Umer Daood, Clinical Dentistry, Restorative Division, Faculty of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, 57000 Bukit Jalil, Wilayah Persekutuan, Kuala Lumpur, Malaysia.

Email: [email protected]

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Ammar Abdullah Malik

Ammar Abdullah Malik

Department of Oral Biology, Post Graduate Medical Institute, Lahore, Pakistan

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Muhammad Sharjeel Ilyas

Muhammad Sharjeel Ilyas

Department of Oral Biology, Post Graduate Medical Institute, Lahore, Pakistan

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Asrar Ahmed

Asrar Ahmed

Department of Oral Biology, Post Graduate Medical Institute, Lahore, Pakistan

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Syed Saad B. Qasim

Syed Saad B. Qasim

Department of Bioclinical Sciences, Faculty of Dentistry, Kuwait University, Safat, Kuwait

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Spoorthi Ravi Banavar

Spoorthi Ravi Banavar

Oral Diagnostic and Surgical Sciences, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia

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Abdul Samad Khan

Abdul Samad Khan

Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia

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Esther Kok Sook Kuan

Esther Kok Sook Kuan

Clinical Dentistry, Faculty of Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia

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Sobia Bilal

Sobia Bilal

Department of Children and Community Oral Health, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia

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Jukka Matinlinna

Jukka Matinlinna

Dental Materials Science, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China

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Liang Lin Seow

Liang Lin Seow

Clinical Dentistry, Faculty of Dentistry, International Medical University Kuala Lumpur, Kuala Lumpur, Malaysia

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First published: 21 May 2021
Citations: 1

Umer Daood and Ammar Abdullah Malik contributed equally to this study and considered as co first authors.

Funding information: International Medical University, Grant/Award Number: 390/2017

Abstract

The aim of the study is to investigate a new formulation, based on dioctadecyldimethyl ammonium-bromide (QA) and riboflavin (RF), combining antimicrobial activities and protease inhibitory properties with collagen crosslinking without interference to bonding capabilities in a rabbit model. Quaternary ammonium riboflavin (QARF) experimental adhesives modified with dioctadecyldimethyl ammonium-bromide and riboflavin were bonded (0.5/1.0/2.0%) to rabbit dentin to investigate for pulpal-histology, interfacial-morphology, transmission electron microscopy, mechanical properties, collagen crosslinking, micro-Raman analysis, antimicrobial, and anti-protease activities. Collagen type-I molecules were generated using molecular-docking. Odontoblasts appeared with normal histology, were seen in controls with no inflammatory cells detected in 0.5% specimens at day 7 and mild inflammatory response at day 30. In QARF 2.0%, inflammatory cells were not detected at day 7 and 30 (p < .05). Dentinal tubules are seen with intact collagen surface in 1% specimens. Resin penetrated inside 1% adhesive specimens with few irregularly funnel-shaped tags. Transmission electron microscopy showed thinner collagen in all specimens except 1% QARF specimens. Biofilms were influenced by QARF adhesives. Elastic moduli were significantly higher in 1.0% and 2.0% QARF adhesive specimens with a significant increase in total crosslinks. Stable amide groups with anti-protease activity was observed in QARF groups. Charged residues were seen in the triple helix hCOL3A1, Gly489-Gly510 after stabilisation with formulation. The 1% QARF modified adhesives improved biochemical and biomechanical properties of rabbit dentin.

CONFLICT OF INTEREST

The authors declare no potential conflict of interest.

DATA AVAILABILITY STATEMENT

Research data are not shared.

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