“…Three different types of clinically used and most frequently studied antiplaque agents are sodium fluoride, ampicillin, and chlorhexidine. , However, some inherent issues of these antiplaque agents could not be avoided such as brown staining of the teeth and tongue, an unpleasant taste, enhanced supragingival calculus formation, and rarely painful desquamations of the oral mucosa all of which have led to the search for new formulations. Recently, gold nanoparticles (AuNPs) have been proposed as an antimicrobial agent to prevent the oral infections. − Most of the published work has mainly focused on the preparation of AuNPs conjugated with antibiotics, antimicrobial peptides, and ligands ,− in order to enhance the antibacterial abilities. AuNPs with smaller sizes have various benefits in antibiotic delivery such as regulating size and morphology, high-density surface ligands, and delivery without losing drugs which protects them from destruction.…”