Histopathology of initial gingivitis in humans. A pilot study

Area of Science:

• Oral pathology
• Pediatric dentistry
• Inflammation research

Background:

• Gingivitis is a common oral condition.
• Understanding early inflammatory responses is crucial for pediatric oral health.
• Adolescent inflammatory responses may differ from adults.

Purpose of the Study:

• To investigate inflammatory alterations in the gingival margin during initial gingivitis in adolescents.
• To quantitatively assess inflammatory cell infiltration and collagen content changes.
• To compare the inflammatory reaction in adolescents to other age groups and species.

Main Methods:

• Adolescent participants (11-13 years) underwent a 4-day cessation of oral hygiene.
• Gingival biopsies were collected from premolars at baseline (day 0) and day 4.
• Semi-thin sections were analyzed for inflammatory cells (neutrophilic granulocytes, mononuclear leukocytes) and collagen content.

Main Results:

• A slight increase in neutrophilic granulocytes was observed.
• A more pronounced increase in mononuclear leukocytes occurred in the junctional epithelium and connective tissue.
• Collagen loss was noted in 4 out of 6 subjects; 2 showed no change.

Conclusions:

• Initial gingivitis in adolescents involves a notable increase in mononuclear leukocytes and potential collagen loss.
• The inflammatory response in this age group differs from adult humans and adult dogs, aligning more closely with juvenile dogs.
• Findings highlight unique aspects of pediatric inflammatory responses in early gum disease.