Oral cancer represents a significant and persistent public health disparity, disproportionately impacting underserved populations including rural residents, racial and ethnic minorities, the elderly, the uninsured, and low-income individuals. These groups face formidable barriers to accessing traditional in-person dental care, leading to laterstage diagnoses and poorer survival outcomes. Telehealth and its dental-specific subset, teledentistry, have emerged as disruptive technologies with the potential to revolutionize oral cancer screening by overcoming geographical, financial, and systemic obstacles. This paper critically examines the application, efficacy, challenges, and future potential of teledentistry models in expanding early detection of oral potentially malignant disorders (OPMDs) and cancers among underserved communities. We review various service delivery models including synchronous, asynchronous, and hybrid approaches and their implementation in community health centers, mobile units, and institutional partnerships. Evidence demonstrates that store-and-forward teledentistry consultations for oral lesions can achieve high diagnostic accuracy, sensitivity, and specificity when compared to in-person examination, facilitating timely triage and referral. However, widespread adoption is hindered by regulatory fragmentation, reimbursement limitations, digital literacy gaps, and technological inequities (the "digital divide"). This paper argues that for teledentistry to fulfill its promise as a tool for health equity, it must be integrated into a comprehensive public health strategy. This includes policy reform for licensure and reimbursement, investment in broadband infrastructure, community-centered design of technological solutions, and the training of a culturally competent workforce. When implemented thoughtfully, teledentistry-driven screening can create a more equitable pathway to early diagnosis, reducing the burden of advanced oral cancer on society's most vulnerable members.