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Do Clear Plastic Retainers Release Tiny Plastic Particles In The Mouth? A Short-Term Laboratory Study.

Short Term Evaluation Of Microplastic Release From Thermoplastic Essix Retainer After Intraoral Use:An Ex-Vivo Study. - NIL

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2025/08/093879
Enrollment
15
Registered
2025-08-29
Start date
Unknown
Completion date
Unknown
Last updated
2025-09-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: M264- Malocclusion, unspecified

Interventions

Intervention1: Essix Retainer: Polyethylene Terephthalate Glycol-modified. Intervention2: Nil: Nil Intervention3: Nil: Nil Control Intervention1: NIL: NIL

Sponsors

Helan christeena
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1 Aged 18 and above. 2 Good oral hygiene status. 3 No systemic illness or parafunctional oral habits. 4 Willingness to comply with retainer wear instructions.

Exclusion criteria

Exclusion criteria: 1 Poor compliance during orthodontic treatment. 2 Known allergies to plastics or dental materials. 3 History of bruxism or habits causing excessive mechanical wear.

Design outcomes

Primary

MeasureTime frame
Mean weight loss of Essix retainers (in mg)before and after intraoral use, indicating microplastic release.Timepoint: 1.Before Use (Baseline) 2.After a defined intraoral use period (3 Months.)—

Secondary

MeasureTime frame
Detection and characterization of released microplastic particles using SEM or FTIR spectroscopy.Timepoint: After 3 Months of Intraoral use—

Countries

India

Contacts

Public ContactDr Pavithrananad A

Indira Gandhi Institute Of Dental Sciences

pavithranandammayapan@igids.ac.in9443183590

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026