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Aim <p>This pilot study aims to evaluate the effectiveness of photobiomodulation (PBM) and local anaesthetic gel (LA gel) administered before needle insertion in reducing the pain associated with LA infiltration with the help of 640&#xa0;nm wavelength delivering a total of 18&#xa0;J/cm2.</p> Materials and methods <p>Eight participants undergoing periodontal surgery were assigned to two groups. Group A received PBM, while Group B received LA gel before local infiltration. Pain levels in both groups were assessed using the visual analogue scale (VAS) immediately after the needle prick.</p> Result <p>There was a statistically significant difference in pain level experienced when compared between PBM and LA gel. The mean pain score in PBM group was lower than LA gel group (p = &lt; 0.001).</p> Conclusion <p>The PBM therapy can be successfully used to decrease the level of pain experienced during local infiltration in periodontal surgery.</p>

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Comparative evaluation on the efficacy of photobiomodulation using 640 nm diode laser versus local anesthetic gel in pain mitigation prior to conventional local infiltration: a pilot split mouth study

  • 期刊论文

  • 发表日期：

    2026年4月2日

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  • Shruti H. Dhimte,
  • Nitin Gorwade,
  • Sachin B. Mangalekar,
  • Shashank Vijapure,
  • Prachi A. Rathod,
  • Sandipan Sarkar,
  • Satyajeet B. More

摘要

Aim

This pilot study aims to evaluate the effectiveness of photobiomodulation (PBM) and local anaesthetic gel (LA gel) administered before needle insertion in reducing the pain associated with LA infiltration with the help of 640 nm wavelength delivering a total of 18 J/cm2.

Materials and methods

Eight participants undergoing periodontal surgery were assigned to two groups. Group A received PBM, while Group B received LA gel before local infiltration. Pain levels in both groups were assessed using the visual analogue scale (VAS) immediately after the needle prick.

Result

There was a statistically significant difference in pain level experienced when compared between PBM and LA gel. The mean pain score in PBM group was lower than LA gel group (p = < 0.001).

Conclusion

The PBM therapy can be successfully used to decrease the level of pain experienced during local infiltration in periodontal surgery.