Using light to treat tooth stains: controlled and randomized trial

INTERVENTION: This is a randomized, parallel, single‐blind clinical study involving 16 healthy children aged 6 to 17 years of both sexes. Intervention group: 8 patients receiving treatment with resin infiltration aided by transillumination. Control group: 8 patients receiving treatment with resin infiltration. Treatments will be randomized, and instructions for both groups will be given in a single session, with follow‐ups at 1 month and 6 months. The masking of opacities will be quantitatively analyzed by a previously calibrated and blinded examiner. Intervention group: prophylaxis with prophylactic paste (Herjos, Vigodent) and ultra‐soft rubber cup (American Burrs, Santa Catarina), absolute isolation with rubber dam (Madeitex, São Paulo, Brazil) and Yong arch (Golgran, São Paulo, Brazil), abrasion with an aluminum oxide abrasive tip on the lesion surface (Dura white, Shofu, Japan) using a low‐speed micromotor under irrigation, washing with water spray for 30 seconds and drying with air spray for 5 seconds, application of 15% hydrochloric acid for 10 seconds, rinsing for 30 seconds and drying with air spray for 5 seconds, application of 99% ethanol for 30 seconds to dissect the lesion, which will be monitored by a transilluminator positioned on the lingual or palatal surface of the affected tooth. Steps 3 to 7 will be repeated in areas where, by transillumination, it is observed that the ethanol did not penetrate the lesion. ICON® (resin infiltrant) will be applied, and its penetration can be monitored by orange light positioned palatally or lingually. Aluminum foil will be used to protect the infiltration process from ambient light and premature photopolymerization. Excess material will be removed with an endodontic suction device, sterile gauze and dental floss will be used on the CONDITION: C07.650.800.295.500 Transillumination; Esthetics dental ; Dental Enamel Hypomineralization PRIMARY OUTCOME: Evaluate the masking of opacity using a spectrophotometer to obtain the color difference ?E before and after the interventions SECONDARY OUTCOME: Evaluate color stability using a spectrophotometer after 1 month and 8 months To evaluate whether the use of transillumination increases the effectiveness of masking by means of a spectrophotometer to analyze the color difference ?E before and after the interventions INCLUSION CRITERIA: Children and adolescents exhibiting well defined; creamy‐white or yellow opacities in an incisor without post eruptive structural loss