# Colorimetric, Ultra-structural and Elemental Comparison of Dental Enamel Defects

> **NCT04704089** · — · RECRUITING · sponsor: **Assistance Publique - Hôpitaux de Paris** · enrollment: 80 (estimated)

## Conditions studied

- Amelogenesis Imperfecta
- Dental Fluoroses
- Hypomineralization Molar Incisor

## Interventions

- **OTHER:** spectrophotometer
- **OTHER:** Biological (protein analysis by western blot or mass spectrometry of matrix proteins), structural (electron microscopy) and physico-chemical analyses

## Key facts

- **NCT ID:** NCT04704089
- **Lead sponsor:** Assistance Publique - Hôpitaux de Paris
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2022-07-18
- **Primary completion:** 2026-04-18
- **Final completion:** 2026-04-18
- **Target enrollment:** 80 (ESTIMATED)
- **Last updated:** 2025-07-03


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04704089

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04704089, "Colorimetric, Ultra-structural and Elemental Comparison of Dental Enamel Defects". Retrieved via AI Analytics 2026-06-05 from https://api.ai-analytics.org/clinical/NCT04704089. Licensed CC0.

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