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

Recruiting now · Not applicable

Conditions studied: Hearing Aids, 3D Printing

In brief

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.

Key facts

Study ID

NCT07216937

Run by

University of Arizona

People needed

30

Starts

2025-11-07

Expected to finish

2026-06-14

Last updated by the study team

2026-05-01

Who can join

Age: 18 and older, up to 89. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• 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.

You may not qualify if…

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

Where it is running

• The University of Arizona Hearing Clinic — Tucson, Arizona, United States (enrolling)

Full record on ClinicalTrials.gov

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