Does toluidine blue detect more oral cancer?

Area of Science:

• Oral oncology
• Diagnostic imaging
• Public health

Background:

• Oral potentially malignant disorders (OPMDs) pose a significant global health challenge, particularly in populations with habits like smoking and betel quid chewing.
• Early detection of OPMDs is crucial for improving patient outcomes and reducing oral cancer mortality.
• Visual screening alone has limitations in identifying all suspicious oral lesions.

Discussion:

• This randomized controlled trial evaluated toluidine blue dye as an adjunct to visual screening for OPMDs.
• The study involved a large cohort of individuals with a history of cigarette smoking or betel quid chewing.
• Screening-positive participants were referred for specialist examination and biopsy to confirm diagnoses.

Key Insights:

• Toluidine blue dye significantly increased the detection of oral submucous fibrosis (OSF) compared to visual screening alone.
• A slight increase in leukoplakia detection was observed with the use of toluidine blue.
• The study highlights the potential of toluidine blue as a cost-effective adjunctive tool for OPMD screening in high-risk populations.

Outlook:

• Further research is warranted to optimize toluidine blue staining protocols and assess its long-term impact on oral cancer incidence and mortality.
• Integration of toluidine blue staining into routine oral cancer screening programs could improve early detection rates.
• Public health initiatives should focus on educating high-risk individuals about the importance of regular oral examinations and the role of adjunctive screening tools.