PMC4914720_01
Initial picture taken with calibration block.
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ScanWhite, a specific software program for the objective assessment of tooth bleaching levels based on computational processing of digital images (Figure 1). Subsequently, professional dental prophylaxis was performed with a Robinson brush with a pumice and water paste.
Gingival barrier properly applied and light-cured.
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A gingival barrier (Lase Protect, DMC, Sao Carlos, SP, Brazil) was then applied and light-cured for 10 seconds for each dental element (Figure 2).
Bleaching gel applied to the buccal surface of the upper and lower teeth.
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The bleaching agent was mixed and applied in homogeneous layers on the buccal surfaces of the upper and lower anterior teeth (Figure 3).
Final picture taken with calibration block.
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One week following the end of the bleaching treatment, a new photography session was performed with the same calibration block (Figure 4).
Overall result of bleaching.
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The result showed 22 tones of whitening for the upper right central incisor and 50 tones for the right canine (Figure 5).