Using foods of different hardness and size to map lower jaw movement and design occlusal surfaces.
Official title: Effects of Test Foods of Different Hardness and Size on Mandibular Movements and Occlusal Morphology.
Run by Istanbul University · NCT07105995 · Data updated 2026-11-12
We will test whether chewing foods of different hardness and size can be used to record lower jaw movements and help design better occlusal surfaces for adult dental students.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 24 (estimated) |
| Sponsor | Istanbul University Academic / other |
| Locations | 1 site (Istanbul, Süleymaniye Fatih) |
| Status | Recruiting |
| Started | September 1, 2025 |
| Main results expected | February 1, 2026 |
| Study ends | June 1, 2026 |
| Registry record updated | August 6, 2025 |
| Trial ID | NCT07105995 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adult Istanbul University dental students with Angle Class I occlusion, intact posterior teeth, no prior orthodontic treatment, and no temporomandibular or masticatory disorders.
✕Probably not a fit
People with missing teeth, implant-supported restorations, posterior crowns or large fillings, prior orthodontic treatment, TMJ or masticatory disorders, food allergies, or those who are not Istanbul University dental students are unlikely to be eligible or to benefit from the specific findings.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Participants who are dental students with Class I occlusion will undergo intraoral scans, facebow registration, mandibular border movement recording, and chewing registrations while biting standardized test foods of varying hardness and size. Digital jaw motion capture and virtual articulator software will translate these chewing recordings into occlusal morphology designs that can be compared across the different test foods. Clinical examinations and questionnaires will collect complementary data on recording quality and participant comfort. The study focuses on noninvasive measurement and digital workflow refinement in a controlled university clinic setting.
Why it matters
Potential benefit: If successful, this approach could improve digital occlusal design so prostheses better match patients' natural jaw movements, reducing adjustments and improving comfort.
How similar studies have gone: Digital jaw motion recording and virtual articulators have been used since the 1990s and early 2000s with encouraging results for replicating mandibular motion, though methods and clinical uptake vary.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * having Angle molar class 1 occlusion * over 18 years old * not undergone any orthodontic treatment * not having any temporomandibular or masticatory disorders * not having any pain or sensitivity on temporomandibular joint, masticatory muscle * not having missing teeth or implant-supported restorations * not having fillings or crowns on teeth 4.4 - 4.7 * not having supernumerary teeth * not allergic to test foods * volunteering to participate * being a student at Istanbul University Faculty of Dentistry Exclusion Criteria: * not having Angle molar class 1 occlusion * under 18 years old * undergone any orthodontic treatment * having any temporomandibular or masticatory disorders * having any pain or sensitivity on temporomandibular joint, masticatory muscle * having missing teeth or implant-supported restorations * having fillings or crowns on teeth 4.4 - 4.7 * having supernumerary teeth * allergic to test foods * not volunteering to participate * not being a student at Istanbul University Faculty of Dentistry
Where it's running
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Istanbul University Department of Prosthodontics
Istanbul, Süleymaniye Fatih, Turkey (Türkiye) Recruiting
Study contacts
- Study coordinator: Ayşenur Özcan-Sezgi̇n, Dds
- Email: aysenurozcan53@gmail.com
- Phone: +905057667873
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.