Influence of the apical limit of instrumentation and photodynamic therapy on the postoperative pain of lower molars with asymptomatic apical periodontitis.

Autor: Souza MA; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil. Electronic address: matheussouza@upf.br., Bonacina LV; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Trento A; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Bonfante FDC; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Porsch HF; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Ricci R; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Lago BLT; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Lago CTR; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Gabrielli ES; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Bervian J; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Farina AP; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil., Cecchin D; School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil.
Jazyk: angličtina
Zdroj: Photodiagnosis and photodynamic therapy [Photodiagnosis Photodyn Ther] 2021 Dec; Vol. 36, pp. 102489. Date of Electronic Publication: 2021 Aug 18.
DOI: 10.1016/j.pdpdt.2021.102489
Abstrakt: Introduction: The aim of present study was to evaluate the influence of apical limit of instrumentation and PDT on the postoperative pain of lower molars with asymptomatic apical periodontitis.
Methods: Forty patients were included in the present study and were divided into 4 groups (n=10), according to apical limit of instrumentation and use of PDT: instrumentation at 0.0 measurement; instrumentation at 0.0 measurement+PDT; instrumentation 1mm beyond 0.0 measurement; instrumentation 1mm beyond 0.0 measurement+PDT. In the PDT, the root canals were filled with 0.01% methylene blue, remaining for 5 min. The low-intensity laser was used with 100 mW, 660-690 nm wavelength), using intra-canal fibre. Root canals were irradiated for 90 s, delivering total dose of 9 J and energy density of 320 J/cm2. After root canal preparation and PDT protocols, root canals were filled with gutta-percha and AH Plus endodontic sealer, being sealed with composite resin.The evaluation of postoperative pain was performed by visual analog scale after 24, 48, 72 hours and 7 days. Data were analysed by specific statistical tests, at level of 5%.
Results: No statistical significant difference was observed among experimental groups in all evaluation periods, as well as in the intragroup analysis over time, regarding postoperative pain and analgesic medication consumption (p>0.05).
Conclusions: Apical limit of instrumentation and PDT have no influence on the postoperative pain of lower molars with asymptomatic apical periodontitis.
(Copyright © 2021 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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