The different effects of low-level laser therapy before and after overinstrumentation on the expression of substance P and interleukin-10

Sri Kunarti, Devi Eka Juniarti, Yulianti Kartini Sunur, Meidi Kurnia Ariani

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Background: One of the causes of endodontic flare-ups is overinstrumentation during canal preparation. In general, to reduce the level of pain and swelling that is caused by endodontic flare-ups, patients it has taken analgesics and antibiotics after treatment. However, some patients have been reported to have allergic reactions to nonsteroidal anti-inflammatory drugs. Lasers have been reported to be significantly effective in reducing pain and inflammation after root canal treatment. Low-level laser therapy (LLLT) 650 nm pre- or post-conditioning is widely used as a therapy. Objective: This study investigated the effect of pre- or post-conditioning with a 650 nm diode laser to reduce pain caused by overinstrumentation Methods: Thirty incisor teeth from Wistar rats were overinstrumented and exposed to a 650 nm diode laser before or after overinstrumentation and then divided into six groups. Groups I and II were control groups (30 and 120 min), groups III and IV were precondition groups (30 and 120 min) and Groups V and VI were postcondition groups (30 and 120 min). Immunohistochemical analysis was conducted to check the expression of substance P and interleukin-10 (IL-10) Result: The expression of substance P in the precondition LLLT groups was significantly lower than that in the control and postcondition groups. On the other hand, the expression of IL-10 in the precondition LLLT groups was significantly higher than that in the control and postcondition groups. Conclusion: There was a decrease in pain after preconditioning laser diode 650 nm exposure.

Original languageEnglish
Pages (from-to)317-321
Number of pages5
JournalSaudi Dental Journal
Volume35
Issue number4
DOIs
Publication statusPublished - May 2023

Keywords

  • IL-10
  • Laser diode 650 nm
  • Overinstrumentation
  • Postcondition
  • Precondition
  • Substance P

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