Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - YES

Primary Purpose of the Study

The primary purpose of this randomized, double-blinded clinical study is to evaluate and compare the periapical healing outcomes following Endodontic Microsurgery and Platelet-Rich Fibrin (PRF) placement , with and without adjunctive Photobiomodulation Therapy (PBMT), using clinical, radiographic, ultrasonographic (with color Doppler), and CBCT imaging methods over a 12-month follow-up period.. This study seeks to determine whether the combination of regenerative [ using PRF] and adjunctive therapies [using PBMT] enhances tissue regeneration, reduces inflammation, and improves overall clinical outcomes compared to conventional treatment approaches

Endodontic microsurgery (EMS) has shown high success rates in managing persistent periapical pathosis, especially with advancements in microsurgical techniques, imaging modalities like CBCT and Ultrasonography with Color Doppler, and the use of regenerative biomaterials such as Platelet-Rich Fibrin (PRF). PRF enhances healing by releasing a concentrated mix of growth factors that promote tissue regeneration and angiogenesis. Photobiomodulation Therapy (PBMT), also known as low-level laser therapy, has demonstrated additional regenerative potential by stimulating cellular proliferation, improving microcirculation, and reducing postoperative inflammation and pain. Combining PRF with PBMT may synergistically enhance periapical healing following EMS by accelerating tissue repair and improving bone regeneration outcomes. This study seeks to investigate whether adjunctive PBMT offers significant benefits over PRF alone in post-surgical periapical healing assessed through clinical, radiographic, ultrasonographic (with color Doppler), and CBCT evaluations.

MATERIAL AND METHODS:

The present study will be conducted in the Department of Conservative Dentistry and Endodontics, Faculty of Dental Science, King George’s Medical University, Lucknow in collaboration with Department of

Radiodiagnosis, King George’s Medical University, Lucknow.  The study aims to include patients of age group 18 to 40 years with radiographic evidence of periapical lesion indicated for surgery and who will give a written consent and adhere in the inclusion criteria of the study. They  will be categorized into two groups based on use of photo biomodulation therapy.

Surgery under magnification followed by placement of PRF will be done in all patients. Following which PBMT will be applied in study group and laser simulation without activation will be done in control group. Clinical , radiographical evaluation will be done to evaluate the periapical healing at required intervals. Ultrasonographic with color doppler study  and CBCT evaluations will also be done at required intervals to assess neo angiogenesis and three dimensional bone fill respectively.

Data obtained will be statistically analysed. Any changes deemed in the interest to the study will be done accordingly.