# Combining Hyaluronic Acid and Amino Acids for Improved Healing of Post-Extraction Tooth Socket in Type 2 Diabetes Mellitus Subjects: A Randomized Clinical Trial

**Authors:** Tiziana Ruggiero, Davide Camisassa, Marta Bezzi, Ettore Cogno, Benedetta Brugiafreddo, Vincenzo Nobile, Renato Pol, Ilaria Roato, Federico Mussano, Paolo Giacomo Arduino

PMC · DOI: 10.3390/dj14020103 · Dentistry Journal · 2026-02-11

## TL;DR

A new gel combining hyaluronic acid and amino acids improved healing of tooth sockets in diabetic patients after tooth extraction.

## Contribution

A novel topical formulation combining sodium hyaluronate and amino acids was tested for post-extraction healing in type 2 diabetes patients.

## Key findings

- The intervention group showed significantly improved healing index scores by day 7 and day 14.
- No significant improvement in the rate of socket closure was observed in the intervention group.
- The gel formulation demonstrated therapeutic efficacy in promoting wound healing for diabetic patients.

## Abstract

Background/Objectives: Conventional wound care often fails to address the complex pathology of diabetic wounds adequately. Research shows that hyaluronic acid and its derivatives promote tissue regeneration in the later stages of wound healing. We evaluated the efficacy of a novel topical formulation in promoting socket healing following post-extraction in patients with type-2 diabetes mellitus, by combining sodium hyaluronate and six amino acids involved in collagen synthesis. Methods: A single-center, two-arm randomized controlled trial was conducted in adults aged 18 and over with type 2 diabetes requiring extraction of at least one non-impacted tooth. Forty-four participants were randomized to receive either the intervention or no treatment. Primary outcomes included a modified Landry’s healing index and rate of socket closure. Results: Comparative analysis showed significantly improved healing index scores in the intervention group by day 7 and day 14 compared to control, with no improvements in the rate of socket closure. Conclusions: This research provides evidence on the therapeutic efficacy of the gel formulation under study in promoting wound healing of post-extraction sites in diabetic patients undergoing tooth extraction. Further research is needed to compare its efficacy with standard treatments and adjunct therapies.

## Linked entities

- **Diseases:** type 2 diabetes mellitus (MONDO:0005148)

## Full-text entities

- **Diseases:** end-organ disease (MESH:C564816), , and endocrine complications (MESH:D004700), diabetic retinopathy (MESH:D003930), thrombocytopenia (MESH:D013921), infection (MESH:D007239), diabetic neuropathy (MESH:D003929), insulin resistance (MESH:D007333), diabetic ulcers (MESH:D017719), blood dyscrasias (MESH:D006402), Diabetic cardiomyopathy (MESH:D058065), infectious complications (MESH:D003141), chronic (MESH:D002908), neuropathy (MESH:D009422), nephropathy (MESH:D007674), T2DM (MESH:D003924), cerebrovascular, cardiovascular, and peripheral artery disease (MESH:D058729), liver failure (MESH:D017093), alveolitis (MESH:D011658), T1DM (MESH:D003922), SSIs (MESH:D013530), Diabetes (MESH:D003920), swelling (MESH:D004487), root fractures (MESH:D011843), hyperglycemia (MESH:D006943), platelet dysfunction (MESH:D001791), peripheral vascular disease (MESH:D016491), chronic systemic inflammation (MESH:D007249), complications (MESH:D008107), chronic wounds (MESH:D014947), metabolic disorder (MESH:D008659), Bleeding (MESH:D006470), Obesity (MESH:D009765), GDM (MESH:D016640), periapical lesions (MESH:D010483), retinopathy (MESH:D058437), cardiomyopathy (MESH:D009202)
- **Chemicals:** AA (MESH:D000596), Aminogam 6 (-), L-lysine (MESH:D008239), mepivacaine (MESH:D008619), L-alanine (MESH:D000409), L-proline (MESH:D011392), polyvinyl pyrrolidone (MESH:D011205), HA (MESH:D006820), sodium hydroxide (MESH:D012972), blood glucose (MESH:D001786), glycine (MESH:D005998), L-valine (MESH:D014633), propyl paraben (MESH:C006068), water (MESH:D014867), sorbitol (MESH:D013012), L-leucine (MESH:D007930), methyl parahydroxybenzoate (MESH:C015358), retinoids (MESH:D012176)
- **Species:** Homo sapiens (human, species) [taxon 9606], Nicotiana tabacum (American tobacco, species) [taxon 4097]

## Full text

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## Figures

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## References

43 references — full list in the complete paper: https://tomesphere.com/paper/PMC12939014/full.md

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Source: https://tomesphere.com/paper/PMC12939014