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Updated: Jan 21, 2026

Adjunctive Diode Laser Therapy and Probiotic Lactobacillus Therapy in the Treatment of Periodontitis and Peri-Implant Disease
Published on: May 9, 2022
Painless injections-a possibility with low level laser therapy.
Bhagyashree Jagtap1, Kalyani Bhate1, Surabhi Magoo1
1Department of Oral & Maxillofacial Surgery, Dr. D. Y. Patil Vidyapeeth, Pune, Maharashtra, India.
Low Level Laser Therapy (LLLT) significantly reduced pain perception during local anesthetic injections in dental patients. This innovative approach offers a promising method for enhancing patient comfort during routine dental procedures.
Area of Science:
- Dentistry
- Pain Management
- Laser Therapy
Background:
- Local anesthetic injections are common in dental procedures but cause patient apprehension.
- Providing painless dental treatment is a primary objective in dental practice.
- Patient anxiety associated with injections can impact the overall treatment experience.
Purpose of the Study:
- To evaluate the efficacy of Low Level Laser Therapy (LLLT) in mitigating pain associated with local anesthetic injections.
- To compare pain levels experienced with and without the application of LLLT.
- To provide a basis for incorporating LLLT as an adjunct in pain control during dental procedures.
Main Methods:
- A prospective, split-mouth study design was employed with 25 participants.
- Condition A involved LLLT application followed by local anesthesia injection.
- Condition B served as a control, with non-activated LLLT preceding local anesthesia.
- Pain perception was quantitatively assessed using the Visual Analogue Scale (VAS).
Main Results:
- A statistically significant difference (P < 0.001) was observed in pain levels between the two conditions.
- LLLT application demonstrated a marked reduction in pain during local anesthetic administration.
- The results indicate a clear benefit of LLLT in managing injection-related discomfort.
Conclusions:
- Low Level Laser Therapy (LLLT) effectively reduces pain during local anesthetic injections in a dental setting.
- Further multi-center research with larger cohorts and varied study designs is recommended.
- LLLT presents a viable non-invasive option for improving patient comfort in dentistry.
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