Does the Transillumination Technique Using a Diagnostic White Tip Influence the Degree of Conversion of the Infiltrant Resin? A Case Report With In Vitro Insights: A New Technique to Improve the Predictability During the Application of Resin Infiltration: Transillumination Using a Diagnostic White Tip.

Objective: This study aimed to evaluate, through a case report combined with in vitro study, whether a new diagnostic white tip for the transillumination technique during resin infiltration influences the procedure and degree of conversion (DC).

Materials and methods: A clinical case report demonstrated resin infiltration using the transillumination technique with a new white diagnostic tip (Radii Xpert LED diagnostic tip, SDI, Bayswater, VIC, AU) along with a light-curing device to enhance aesthetic results. An in vitro study assessed the DC of two diagnostic white tips (Radii Xpert LED diagnostic tip [SDI, Bayswater, VIC, AU] and Valo Grand White Light Lens [Ultradent Prod., South Jordan, UT, USA]) compared to that achieved using conventional tips of both light-curing devices. Statistical analysis was performed using two-way ANOVA and Tukey's test (α = 0.05).

Results: The clinical case achieved complete masking of the white spot lesion. In vitro, the diagnostic white tips exhibited significantly lower DC values compared to conventional tips (p = 0.001), regardless of the light-curing unit.

Conclusions: The diagnostic white tip used in the transillumination technique improves resin infiltration visibility without compromising the degree of conversion.

Clinical significance: The transillumination technique with the diagnostic white tip enables monitoring of resin infiltration while maintaining effective polymerization.