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The effect of photodynamic therapy on postoperative pain in teeth with primary endodontic infection

2021; Elsevier BV; Volume: 37; Linguagem: Inglês

10.1016/j.pdpdt.2021.102700

1873-1597

Esdras Gabriel Alves-Silva, Rodrigo Arruda‐Vasconcelos, Lidiane Mendes Louzada, Adriana de Jesus Soares, Caio Cézar Randi Ferraz, José Flávio Affonso de Almeida, Marina Angélica Marciano, Carolina Steiner‐Oliveira, Marina Stella Bello–Silva, Hagay Shemesh, Brenda Paula Figueiredo de Almeida Gomes,

Dental Anxiety and Anesthesia Techniques

The objective of this study was to investigate the action of photodynamic therapy on pain control after endodontic treatment in asymptomatic teeth with a primary infection, within a single visit.Sixty (60) single-rooted teeth with pulp necrosis and periapical lesions were selected and randomly divided into two (2) groups (n = 30), according to the protocol; a control group (CG) and a group using photodynamic therapy (aPDT). The canals were instrumented with Reciproc files # 25 up to 40 along the entire length of the canal, using 2% chlorhexidine gel as the auxiliary chemical substance, followed by irrigation with sterile saline. aPDT consited of 0.005% methylene blue as photosensitizer, using AsGaAl diode laser, 660 nm wavelength, 100 mW of power and 9 J of energy, using optical fibers with 365 μm in diameter. The canals were filled with Endomethasone N cement.Pain intensity was assessed at 8, 12, 24, 48, 72 h and 1 week after endodontic treatment using a visual analogue scale. The level of pain was classified as none (0), mild (1-3), moderate (4-7) or severe (8-10). The data were at a significance level of 5%. There was a statistically significant difference (p<0.05) in the periods of 8, 12, 24, 48 and 72 h between the control group and the aPDT group. After 1 week, there was no statistically significant difference.It is concluded that photodynamic therapy had a significant effect on decreasing post-endodontic treatment pain in teeth with necrotic pulp and asymptomatic periapical lesions.