Evaluation of photobiomodulation therapy to accelerate bone formation in the mid palatal suture after rapid palatal expa
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ORIGINAL ARTICLE
Evaluation of photobiomodulation therapy to accelerate bone formation in the mid palatal suture after rapid palatal expansion: a randomized clinical trial Denise Souza Matos 1 & Regina Guenka Palma-Dibb 2 & Christiano de Oliveira Santos 3 & Maria da Conceição Pereira Saraiva 4 & Fernanda Vicioni Marques 4 & Mírian Aiko Nakane Matsumoto 4 & Fábio Lourenço Romano 4 Received: 11 June 2020 / Accepted: 1 September 2020 # Springer-Verlag London Ltd., part of Springer Nature 2020
Abstract To evaluate the efficiency of photobiomodulation therapy (PBMT) in the midpalatal suture (MPS) and pain sensation in patients undergoing rapid palatal expansion (RPE). Thirty-four individuals with the diagnosis of skeletal maxillary hypoplasia were divided in two groups: laser (n = 18) and control (n = 16). Treatment plan consisted of the use of the Hyrax expander in all patients. Subjects in the laser group were irradiated with diode laser (980 nm, 0.3 W) in six spots bilaterally distributed along the MPS for 10 s during the active phase of treatment and after overcorrection (passive phase of RPE). Control group received sham irradiations with the laser in standby mode to characterize the placebo effect. Digital occlusal radiographs were performed at different time-points for bone formation evaluation in both groups. The effects of laser irradiation on pain were assessed by the visual analog scale (Wong-Baker Faces Pain Scale). Bone formation between groups was not significantly different (p = 0.2273). At 3 months, bone formation was not yet complete in both groups. Pain sensation was similar between groups (p = 0.3940). However, pain was significantly higher for the first 7 days of treatment compared with the 14th day. PBMT did not accelerate bone regeneration in the MPS and pain sensation was similar. Keywords Bone regeneration . Interceptive orthodontics . Palatal expansion technique . Photobiomodulation therapy
Introduction Skeletal posterior crossbite can be corrected by different methods depending on its characteristics and skeletal
development of the patient [1]. Rapid palatal expansion (RPE) is the most common method with high success rate in growing patients. After RPE, the maxillary transverse width increases by separating the midpalatal suture (MPS) [2, 3].
Registration: International Clinical Trials Registry Platform, #RBR2spcx5. * Fábio Lourenço Romano [email protected]
Mírian Aiko Nakane Matsumoto [email protected]
Denise Souza Matos [email protected]
1
School of Dentistry, University Center of Patos de Minas, Patos de Minas, MG, Brazil
Regina Guenka Palma-Dibb [email protected]
2
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
Christiano de Oliveira Santos [email protected]
3
Department of Stomatology, Public Health and Forensic Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
4
Department of Paediatric Clinics, School of D
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