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Effectiveness Comparison of 3D-Printed and Conventional Ear Tip Comfort in Individuals With Hearing in the Normal Range

University of Arizona · NCT07216937

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Opens the official ClinicalTrials.gov record, with the study team’s contacts. Bored Studies doesn’t enroll anyone.

Key facts

Compensation
Not posted. Ask the study team before screening.
Who can join
Ages 18–89 · All sexes
Healthy volunteers
Accepted
Study type
Interventional · Not applicable
Target enrollment
30
US sites recruiting
1
Study start
November 7, 2025
Record last updated
May 1, 2026

Status re-checked against ClinicalTrials.gov within the last 12 hours.

What the study is about

Access to affordable and timely hearing healthcare remains a major challenge for many individuals, partly due to the high cost and long turnaround time. This study will explore whether 3D-printed ear tips perform as well as or better than standard ear tips in terms of sound quality, comfort, and fit. It will also compare how long each method takes to make and how much each costs.

Being studied: BTE hearing aid with compatible earmolds

Conditions: Hearing Aids; 3D Printing

Eligibility criteria

Copied from the official record. The study team makes the final decision at screening.

Show full criteria

Inclusion Criteria

  • Normal hearing thresholds (\<25 dB HL) at octave frequencies from 250-8000Hz.
  • Normal otoscopy: patent ear canals with normal appearing eardrums and aerated middle ear, bilaterally.
  • English speaking.

Exclusion Criteria

  • history of extensive or current outer or middle ear pathology.
  • history of extensive outer or middle ear surgery.
  • history of neurological or cognitive disorder.

Recruiting US locations

  • The University of Arizona Hearing Clinic

    Tucson, AZ 85719

    Site contact: Bryan Wong, AuD, PhD · 5206268549 · bryanwong@arizona.edu

Study contacts (from the official record)

  • Bryan Wong, AuD, PhD · 520-626-8549 · bryanwong@arizona.edu
All healthy volunteers studies in Arizona →
Effectiveness Comparison of 3D-Printed and Conventional Ear Tip… (NCT07216937) | Bored Studies