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Clinical Trials/NCT07701642
NCT07701642Not yet recruitingNot Applicable

Investigation of Periodontal Inflammatory Mediators in Permanent Molars Affected by Molar-incisor Hypomineralization

Marmara University1 site in 1 country76 target enrollmentStarted: July 16, 2026Last updated:
Conditions
Interventions

Trial Snapshot

Phase
Not Applicable
Status
Not yet recruiting
Enrollment
76
Locations
1
Primary Endpoint
Concentration of proinflammatory and anti-inflammatory cytokines in gingival crevicular fluid

Study Overview

Brief Summary

The goal of this observational study is to investigate periodontal inflammatory mediators in systemically healthy children aged 8-13 years with and without molar-incisor hypomineralization (MIH) who require initial periodontal treatment due to gingivitis.

The main questions it aims to answer are:

Are the levels of periodontal inflammatory mediators in gingival crevicular fluid different between children with MIH and those without MIH? Is the presence and severity of MIH associated with clinical periodontal parameters and dentin hypersensitivity?

Researchers will compare children with MIH to children without MIH to determine whether MIH is associated with changes in periodontal inflammatory mediator levels and periodontal clinical findings.

Detailed Description

Participants will:

Provide written informed consent from their parent or legal guardian before enrollment.

Complete a dental and oral hygiene history questionnaire. Undergo a comprehensive oral examination, including assessment of MIH severity using the MIH Treatment Need Index (MIH-TNI), dentin hypersensitivity using the Schiff Cold Air Sensitivity Scale, plaque index, gingival index, bleeding on probing, and periodontal probing depth.

Provide gingival crevicular fluid samples collected using Periopaper® strips for analysis of periodontal inflammatory mediators.

The following clinical indices and assessment criteria will be used during the clinical examination.

Study Design

Study Type
Observational
Observational Model
Case Control
Time Perspective
Prospective

Eligibility Criteria

Ages
8 Years to 13 Years (Child)
Sex
All
Accepts Healthy Volunteers
Yes

Inclusion Criteria

  • Systemically healthy children aged 8-13 years (both sexes).
  • Children who demonstrate adequate cooperation for dental treatment and study procedures (Frankl Behavior Rating Scale score ≥3).
  • Study group: Children with molar-incisor hypomineralization (MIH) affecting at least three permanent first molars and requiring initial periodontal treatment for gingivitis.
  • Control group: Children without molar-incisor hypomineralization who require initial periodontal treatment for gingivitis.
  • Presence of gingivitis requiring initial periodontal therapy.

Exclusion Criteria

  • Use of antibiotics within the previous 1 month.
  • Radiographic evidence of periodontal destruction.
  • History of periodontal treatment within the previous 3 months.
  • Presence of systemic, chronic, or metabolic diseases.
  • Ongoing active orthodontic treatment.
  • Developmental enamel defects other than molar-incisor hypomineralization.
  • History of premature birth.

Arms & Interventions

MIH patients requiring initial periodontal treatment

Intervention: Initial periodontal treatment (Procedure)

Patients without MIH requiring initial periodontal treatment

Intervention: Initial periodontal treatment (Procedure)

Outcomes

Primary Outcomes

Concentration of proinflammatory and anti-inflammatory cytokines in gingival crevicular fluid

Time Frame: Baseline, 1 month after initial periodontal therapy, and 3 months after initial periodontal therapy

Quantitative concentrations (pg/mL) of IL-1α, IL-1β, IL-6, IL-8, TNF-α, IFN-γ and IL-4, IL-10, IL-13, TGF-β1 measured in gingival crevicular fluid using enzyme-linked immunosorbent assay (ELISA).

Concentration of matrix metalloproteinases in gingival crevicular fluid

Time Frame: Baseline, 1 month after initial periodontal therapy, and 3 months after initial periodontal therapy

Quantitative concentrations (pg/mL) of MMP-2, MMP-3, MMP-8, MMP-9, MMP-20, and TIMP-1 measured in gingival crevicular fluid using ELISA. Measurements will be obtained at baseline (before initial periodontal therapy) and after completion of initial periodontal therapy.

Total oxidant status and total antioxidant status in gingival crevicular fluid

Time Frame: Baseline, 1 month after initial periodontal therapy, and 3 months after initial periodontal therapy

Total Oxidant Status (TOS) and Total Antioxidant Status (TAS) measured by spectrophotometric analysis at baseline (before initial periodontal therapy) and after completion of initial periodontal therapy.

Secondary Outcomes

No secondary outcomes reported

Investigators

Sponsor Class
Other
Responsible Party
Sponsor

Study Sites (1)

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