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Case Reports in Dentistry
Volume 2014, Article ID 217172, 5 pages
Case Report

Photodynamic Therapy in Pediatric Dentistry

1University Cruzeiro do Sul (UNICSUL), Avenida Frederick Hoffamam, 188 Jardim Coimbra, 03693040 São Paulo, SP, Brazil
2University Cruzeiro do Sul (UNICSUL), Rua Galvão Bueno, 868 Liberdade, 1506-000 São Paulo, SP, Brazil
3Dentistry School, University Cruzeiro do Sul (UNICSUL), Avenida Doutor Ussiel Cirilo 225, 08060-070 São Miguel, SP, Brazil
4Dentistry School, University Cruzeiro do Sul (UNICSUL), Rua Saturnino dos Santos, 106 Vila Firminiano Pinto, 04124-150 São Paulo, SP, Brazil

Received 23 April 2014; Revised 18 September 2014; Accepted 18 September 2014; Published 2 October 2014

Academic Editor: Mohammad Hosein K. Motamedi

Copyright © 2014 Patricia da Silva Barbosa et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Conservation of deciduous teeth with pulp alterations caused by caries and trauma is a major therapeutic challenge in pediatric dentistry as a result of the internal anatomy and life cycle characteristic. It is essential that the root canal procedures sanitizers have a performance in eliminating bacterial. In this context, antimicrobial photodynamic therapy (PAT) is promising and emerging as adjuvant therapy in an attempt to eliminate the microorganisms persistent to chemi-mechanical preparation. Since there is presence of oxygen in cells, photosensitizer activated by light can react with molecules in its vicinity by electrons’ or hydrogen’s transfer, leading to microorganism death. This paper reports the case of 4-year-old patient, female, with early childhood caries. The proposed endodontic treatment incuded chemomechanical treatment allied to PAT in the decontamination of root canals using methylene blue dye 50 μg/mL during 3–5 minutes and 40 J/cm2 as energy density, taking into account the need for tissue penetration and effectiveness of PAT inside the dentinal tubules.