Volume 30, Issue 2 pp. 518-527
ORIGINAL ARTICLE

Effect of orodispersible hyaluronic acid film on palatal mucosa wound healing

Jeong Hyun Lee

Jeong Hyun Lee

Department of Dentistry, Graduate School, Kyung Hee University, Seoul, South Korea

Contribution: Data curation, Formal analysis, Writing - original draft

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Ko Eun Lee

Ko Eun Lee

Department of Pediatric Dentistry, Kyung Hee University College of Dentistry, Kyung Hee University Medical Center, Seoul, South Korea

Contribution: Validation, Writing - original draft, Writing - review & editing

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Sang Wook Kang

Sang Wook Kang

Department of Oral and Maxillofacial Pathology, School of Dentistry, Kyung Hee University, Seoul, South Korea

Contribution: Data curation, Formal analysis

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Seung Hwan Park

Seung Hwan Park

Department of Dentistry, Graduate School, Kyung Hee University, Seoul, South Korea

Contribution: Data curation, Formal analysis

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Yong Kwon Chae

Yong Kwon Chae

Department of Dentistry, Graduate School, Kyung Hee University, Seoul, South Korea

Department of Pediatric Dentistry, Kyung Hee University College of Dentistry, Kyung Hee University Medical Center, Seoul, South Korea

Contribution: Writing - original draft

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Myoung-Han Lee

Myoung-Han Lee

Jinwoo Bio Co. Ltd., Yongin-si, South Korea

Contribution: Data curation, Formal analysis, Resources

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Dong-Keun Kweon

Dong-Keun Kweon

Jinwoo Bio Co. Ltd., Yongin-si, South Korea

Contribution: Data curation, Formal analysis, Resources

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Sung Chul Choi

Sung Chul Choi

Department of Pediatric Dentistry, Kyung Hee University College of Dentistry, Kyung Hee University Medical Center, Seoul, South Korea

Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University, Seoul, South Korea

Contribution: Validation

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Ok Hyung Nam

Corresponding Author

Ok Hyung Nam

Department of Pediatric Dentistry, Kyung Hee University College of Dentistry, Kyung Hee University Medical Center, Seoul, South Korea

Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University, Seoul, South Korea

Correspondence

Ok Hyung Nam, Department of Pediatric Dentistry, School of Dentistry, Kyung Hee University, Kyungheedae-Ro 26, Dongdaemoon-Gu, Seoul 02447, South Korea.

Email: [email protected]

Contribution: Conceptualization, Data curation, Validation, Formal analysis, Funding acquisition, Writing - original draft, Writing - review & editing

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First published: 23 January 2023
Citations: 2

Jeong Hyun Lee and Ko Eun Lee contributed equally to this work as first authors.

Abstract

Objective

The objective of the study was to evaluate the healing effect of hyaluronic acid films on palatal wounds.

Materials and Methods

After making 5-mm diameter palatal wounds, 72 rats were randomly assigned to three groups: control, hyaluronic acid gel, and hyaluronic acid film. The animals were sacrificed at 3, 7, and 21 days after the experiment. Clinical, histological, and RT-PCR analyses were performed. Human ex vivo oral mucosa models were used. Histological analysis and pan-cytokeratin staining were performed at 5 days after wound creation.

Results

In rat model, both gels and films showed favorable healing on Days 3 and 7 compared with healing in the control (p < 0.05). Film showed remarkable VEGF and α-SMA expression than did the others (p < 0.05). Immunohistochemical analysis showed that film exhibited significantly lower CD68 and greater α-SMA and vimentin expression levels than those in the others (p < 0.05). In human model, re-epithelialization rate of film group was significantly higher than that of the others. Complete epithelial regeneration was confirmed only in film group using pan-cytokeratin staining.

Conclusions

Within the limits of this study, hyaluronic acid film outperformed gels in terms of palatal wound healing in both models.

CONFLICT OF INTEREST STATEMENT

The authors report that there are no direct or indirect conflicts of interest involving associations with commercial entities that supported the work reported in the submitted manuscript, associations with commercial entities that might have an interest in the submitted manuscript, financial associations involving family members and other relevant non-financial associations.

DATA AVAILABILITY STATEMENT

Datasets related to this article will be available upon request to the corresponding author.

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