Influence of auxiliary lighting, attached to high-speed turbine, in cavity dimensions during replacement of esthetic restoration

Bruna M. Bertol de Oliveira, Marina França, Samuel Kaik Lima, Gabriela Zorzi, Nallu Gomes Lima Hironaka, Bruna Gonçalves, Renata Corrêa Pascotto

Objective: To evaluate the influence of an auxiliary lightning (ultraviolet and white light), attached to a high-speed turbine, in the cavity dimensions after substitution of Class III composite resin restorations. Methods: Class III cavities with vestibular access were prepared in 36 artificial teeth mounted on dental manikin. The cavities were restored using a resin with medium fluorescence and the removal of restorations was performed with high-speed turbine in three different manners (n = 12): without conventional light (SL); with attached ultraviolet light (UV), and with attached white light (LED). Each sample was weighed in an analytical precision balance after the initial cavity preparation and after the removal of the restoration. The difference between the two weightings was submitted to Kruskal-Wallis and Dunn (p < 0.05) statistical tests, to evaluate which technique provides the most conservative preparation when replacing the composite resin. Results: there was a statistically significant difference comparing groups SL and LED (p = 0.03), and SL and UV (p = 0.004). Between UV and LED groups the difference was not significant. Conclusion: The use of systems with auxiliary lightning attached to a high speed turbine can be beneficial to the dentist practice in distinguishing resinous materials when replacing esthetic restorations, preventing unnecessary wear to occur and, as a result, the weakening of the dental structure.

Keywords: Fluorescence. Dental cavity preparation. Dental restoration. Permanent.

How to cite: Oliveira BMB, França M, Lima SK, Zorzi G, Hironaka NGL, Gonçalves B, Pascotto RC. Influence of auxiliary lighting, attached to high-speed turbine, in cavity dimensions during replacement of esthetic restoration. J Clin Dent Res. 2017 Oct-Dec;14(4):86-91. DOI: https://doi.org/10.14436/2447-911x.14.4.086-091.oar

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