Integration Of Nanoparticles with Photoacoustic Imaging in Caries Diagnostics: A Comprehensive Review

Abstract

Dental caries remains one of the most prevalent chronic diseases worldwide, affecting populations across all age groups and socioeconomic strata. Early detection of carious lesions is crucial for implementing minimally invasive treatment strategies and preserving tooth structure. Traditional diagnostic methods, including visual-tactile examination and radiography, often fail to detect incipient lesions in their earliest stages. Photoacoustic imaging (PAI) has emerged as a promising non-invasive diagnostic modality that combines the advantages of optical contrast with ultrasonic resolution. The integration of nanoparticles as contrast agents with PAI technology represents a paradigm shift in caries diagnostics, offering enhanced sensitivity, specificity, and depth penetration. This comprehensive review examines the fundamental principles of photoacoustic imaging, explores various types of nanoparticles employed as contrast agents, discusses their synthesis and functionalization strategies, and evaluates their clinical applications in early caries detection. Furthermore, this paper addresses the biocompatibility considerations, regulatory challenges, and future perspectives of this innovative diagnostic approach. The integration of nanotechnology with photoacoustic imaging holds tremendous potential for revolutionizing dental diagnostics and enabling personalized preventive care strategies.