# Comparison of Environmental Factors Between the Areas of Over- and Under-incidence of Crohn's Disease in the Haut de France Region, by the Study of Dental Exposomes

> **NCT03706196** · — · COMPLETED · sponsor: **University Hospital, Lille** · enrollment: 14 (actual)

## Conditions studied

- Environmental Exposure

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT03706196
- **Lead sponsor:** University Hospital, Lille
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2019-04-02
- **Primary completion:** 2019-07-16
- **Final completion:** 2019-07-16
- **Target enrollment:** 14 (ACTUAL)
- **Last updated:** 2025-12-26


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03706196

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03706196, "Comparison of Environmental Factors Between the Areas of Over- and Under-incidence of Crohn's Disease in the Haut de France Region, by the Study of Dental Exposomes". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT03706196. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*