Gingival response to silk, cotton, and nylon suture materials

Area of Science:

• Oral histology
• Biomaterials science
• Periodontal research

Background:

• Suture materials are commonly used in oral surgery.
• Understanding the biocompatibility of different suture materials is crucial for minimizing tissue reactions and promoting healing.
• Gingival tissue response to implanted sutures requires detailed histological evaluation.

Purpose of the Study:

• To histologically evaluate the gingival tissue response to silk, cotton, and nylon sutures.
• To compare the inflammatory and cellular reactions induced by different suture materials in vivo.
• To determine the biocompatibility of commonly used suture materials in the gingival propria.

Main Methods:

• Implantation of silk, cotton, and nylon sutures into the tunica propria of the gingiva in seven adult rhesus monkeys.
• Histological examination of twenty-four biopsy specimens from the implantation sites.
• Assessment of vascular permeability, leukocytic infiltration, and histiocytic cellular response.

Main Results:

• No significant increase in vascular permeability or leukocytic margination/migration was observed adjacent to any suture material.
• A variable histiocytic reaction, including multinucleated giant cell formation, was present.
• The histiocytic response was most intense with cotton sutures, less intense with silk, and minimal with nylon sutures.

Conclusions:

• Silk, cotton, and nylon sutures exhibit a generally low inflammatory potential in gingival tissue.
• Cotton sutures elicit a more pronounced histiocytic foreign body reaction compared to silk and nylon.
• The observed differences in cellular response may be attributed to the varying capacities of suture materials to modify the local gingival environment.