PMC8276641_01
Initial intraoral view, showing the purple lesion of the hard palate and the points where Photobiomodulation (PTBM) was administered.
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The intraoral examination revealed a purple lesion of the hard palate with blood accumulated in its interior, approximately 1.5 cm in size, sensitive to palpation, with a history of bleeding, and onset 3 months previously (Figure 1). Since the lesion was painful and had been bleeding, red laser light with a wavelength of 660 nm was administered at the first session, with power set at 100 mW and a spot area of 3 mm2 (Laser Duo Portatil , MMO Ltda., Sao Carlos, Brazil), irradiating four points around the lesion (see Figure 1), administering 0.5 J at each point in order to achieve analgesia and trigger the healing process.
Application of ethanolamine oleate 5% around the lesion.
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She was then given anesthesia with lidocaine 2% and epinephrine 1:100,000 around the lesion and 2 mL of monoethanolamine oleate 5% was administered at the base (Ethamolin , Zest Pharmaceutical Ltda., Rio de Janeiro, Brazil) as shown in Figure 2.
Intraoral view 14 days after administration, showing total regression of the lesion.
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After 14 days, total regression of the lesion was observed (Figure 3).