# Comparative Evaluation of Salivary Bisphenol-A Levels in Patients With Fixed Lingual, Hawley and Vacuum-formed Retainers

> **NCT05738889** · — · COMPLETED · sponsor: **Aydin Adnan Menderes University** · enrollment: 120 (actual)

## Conditions studied

- Orthodontic Retention

## Interventions

- **DEVICE:** Fixed lingual retainers applied with Bis-GMA containing composite
- **DEVICE:** Fixed lingual retainers applied with Bis-GMA-free composite
- **DEVICE:** Vacuum-formed retainers
- **DEVICE:** Hawley retainers

## Key facts

- **NCT ID:** NCT05738889
- **Lead sponsor:** Aydin Adnan Menderes University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2021-07-28
- **Primary completion:** 2022-11-08
- **Final completion:** 2022-12-04
- **Target enrollment:** 120 (ACTUAL)
- **Last updated:** 2023-02-24


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05738889

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05738889, "Comparative Evaluation of Salivary Bisphenol-A Levels in Patients With Fixed Lingual, Hawley and Vacuum-formed Retainers". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT05738889. Licensed CC0.

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