Aim: The aim of this systematic review and meta-analysis was to assess possible histomorphometric differences in new bone formation and in remaining graft particles when hyaluronic acid (HA) was added and mixed with graft materials in bone regeneration. Materials and methods: This review was registered at the International Prospective Register of Systematic Reviews (PROSPERO) of the National Institute of Health Research (registration number CRD42024530030). Electronic research was performed, and involved studies published up to 29 February 2024 using a specific word combination. The primary outcome was to assess possible histomorphometric differences in new bone formation and in remaining graft particles when HA was added and mixed with graft materials in bone regeneration. The search resulted in 138 potential studies. Meta-analyses were performed using the fixed and random effects model to identify significant changes in new bone formation and in the remaining graft particles. Results: After screening procedures, only three randomized controlled trials fulfilled the inclusion criteria and were selected for qualitative and quantitative analysis. The effect size of HA in the new bone formation was not statistically significant at 95% CI (Z = 1.734, p-value = 0.083, 95 % CI -,399; 6516). The effect size of HA in the remaining graft particles was not statistically significant at 95% CI (Z = −1.042, p-value = 0.297, CI -,835; 255). Conclusions: Within the limitations of the present systematic review and meta-analysis, the addition of HA to bone graft did not result in significant changes in bone regeneration procedures in terms of new bone formation and residues, even if the included studies showed encouraging and promising results.

Background: The management of pain and inflammation after third molar extraction is essential for patient comfort and recovery. While conventional ibuprofen is widely used for pain relief, ibuprofen arginate, a formulation aimed at faster absorption, has shown potential for faster onset and enhanced efficacy. The aim of the present scoping review was to assess current evidence on the effectiveness of ibuprofen arginate in reducing pain and inflammation following third molar extraction compared to conventional ibuprofen. Methods: A comprehensive literature search was conducted in the MEDLINE database for studies published between 2002 and 2024, focusing on ibuprofen arginate’s impact on postoperative sequelae after third molar extractions. The studies included randomized controlled trials, cohort studies, and case–control studies in English. Results: Four studies, with a combined sample of 1245 patients, met the inclusion criteria. The findings suggest that ibuprofen arginate (200/400 mg) offers a faster onset of pain relief, with significant effects noticeable within 1–2 h. At six hours post administration, pain control was found to be similar between ibuprofen arginate and conventional ibuprofen. Additionally, a study found that ibuprofen arginate (600 mg) reduced postoperative swelling more effectively, although its impact on trismus was limited. Conclusions: Ibuprofen arginate seems to offer quicker pain relief and better control of swelling after third molar extractions compared to regular ibuprofen, making it a promising option for faster recovery. However, more studies are needed to fully understand its benefits and potential uses.