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Mouthguard UseMouthguardsNCT06972823

Impact of 3D-Printed and Custom Mouthguards on Speech and Oral Functions in Children Practicing Contact Sports

A study testing 3D printed custom-made mouthguards and Traditional custom-made mouthguards in people with Mouthguard Use and Orofacial Injuries Prevention, run by Cairo University at 1 site in Egypt.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

This study aims to compare the effects of traditional and 3D-printed custom-made mouthguards on speech and oral functions in pediatric cases who practice contact sports by evaluating the comfort, fit, and performance of both types of mouthguard fabrication methods. Read more about this study

Who is it for?
Ages 8 to 14 yearsHealthy volunteers can take part
What is being tested?
3D printed custom-made mouthguards and Traditional custom-made mouthguards
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
60 participants
Where
1 siteEgypt
Study dates
Aug 2025to Aug 2026
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 8 to 14 years
  • All sexes
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • Children aged 8-14 years of both ages.
  • Participants actively engaged in contact sports.
  • Children who require mouthguards for protection.
  • Cooperative children.

Who cannot join

  • Children with a history of speech or neurological disorders affecting oral function
  • Parental refusal to participate.
  • Children currently undergoing orthodontic treatment with fixed appliances.
  • Presence of severe dental anomalies or extensive missing teeth that could interfere with mouthguard adaptation.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Yasir M Aljadani, Bachelor's degree of dentistry contact

+201118888921

yasir.aljadani@dentistry.cu.edu.eg

Egypt1 site
  • Faculy of Dentistry, Cairo University

    Cairo

Other trials in Egypt

About this study

Official title: Assessing Changes in Oral Functions and Speech After Using 3D-Printed vs. Custom-made Mouth Guards in Children Practicing Contact Sports: A Randomized Clinical Trial

This study aims to compare the effects of traditional and 3D-printed custom-made mouthguards on speech and oral functions in pediatric cases who practice contact sports by evaluating the comfort, fit, and performance of both types of mouthguard fabrication methods. The study will be conducted on 60 children who practice contact sports, and the changes in speech, oral functions, the occlusal thickness of the mouthguards, and the cost efficiency will be assessed over a period of one year.

Read the detailed description

This randomized clinical trial will be conducted at Cairo International Stadium, enrolling healthy children aged 8 to 14 who are actively engaged in contact sports and require mouthguards for protection. Eligible participants must be cooperative and have no history of speech or neurological disorders, orthodontic treatment, or dental anomalies that may affect mouthguard adaptation. After obtaining informed consent from parents, participants will be randomly allocated in a 1:1 ratio into two groups.

Group 1 will receive traditional custom-made mouthguards fabricated from alginate impression material. Group 2 will receive 3D-printed custom-made mouthguards created from digital intraoral scans using CAD/CAM and 3D printing technology. All fittings will be adjusted for comfort, retention, and occlusal balance by the principal investigator.

The primary outcomes include changes in oral functions and speech, assessed using a validated Likert-scale questionnaire adapted from Mat Zainal et al. (2024), administered at baseline, 3 months, and 6 months. Secondary outcomes include evaluating the knowledge, attitude, and practice (KAP) toward mouthguard use using a structured questionnaire (Vignesh et al., 2023), cost efficiency via the incremental cost-effectiveness ratio (ICER), and occlusal thickness changes using an Iwanson caliper. This trial aims to determine whether 3D-printed mouthguards provide superior or equivalent function, comfort, and cost-efficiency compared to traditional methods, potentially advancing the standards of pediatric sports dentistry.

Being tested
3D printed custom-made mouthguards, Traditional custom-made mouthguards
Keywords
3D printed mouthguard, traditional custom-made mouthguard, speech, oral functiions, CAD/CAM, 3D printer, Children, Pediatric Dentistry, Contact sports, speaking
Medical subject headings
Speech

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • 3D printed custom-made mouthguardsDevice

    Participants in the first group will receive 3D printed custom-made mouthguards

  • Traditional custom-made mouthguardsDevice

    Participants in the active comparator arm will receive traditional custom-made mouthguards as an intervention

Study groups in NCT06972823
Study groupRoleWhat they receive
3D printed custom-made mouthguardsExperimentalThis arm will include participants receiving 3D printed custom mouthguards.
Receives: Device: 3D printed custom-made mouthguards
Traditional custom-made mouthguardsActive comparatorParticipants in the second group will receive traditional custom-made mouthguards.
Receives: Device: Traditional custom-made mouthguards

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Changes Speech and in Oral Functions

    Oral functions, including speaking difficulty, lisping, nausea, bulkiness, and mouth dryness, will be assessed using a validated questionnaire adapted from the study by Mat Zainal et al. (2024). The questionnaire will be administered at three distinct intervals (baseline, 3 months, and six months)

    Measured: Six months

Secondary outcomes (3)
  1. Knowledge, attitude, and practice (KAP) of children toward mouthguards

    The study will evaluate the knowledge, attitudes, and practices (KAP) of children regarding the use of mouthguards in preventing orofacial injuries during contact sports. Specifically, the study assesses children's awareness of the risks of orofacial injuries, their understanding of mouthguards as a protective measure, and their current usage patterns. Based on a previous study by Vignesh et al. (2023), a structured and well-adapted questionnaire will be given to all participants in both groups at the initial visit.

    Measured: initial visit (the first month)

  2. Cost Efficiency of both mouthguards

    This study will also assess the cost efficiency of both types of custom-made mouthguards by calculating the cost per unit, using the U.S Dollar (USD) as the unit of measurement. The incremental cost effectiveness ratio will be calculated after one year.

    The following equation will be used to measure the incremental cost-effectiveness ratio (Sadatsafavi et al., 2009):

    ICER=(Mouthguard A cost- Mouthguard B cost)/(outcome of mouthguard A-Outcome of mouthguard B)

    Measured: one year

  3. Occlusal thickness changes

    This study will assess the wear patterns of both types of mouthguards in children participating in contact sports. The wear patterns will be measured by evaluating the thickness reduction of the mouthguards over time using an Iwanson caliper (measured in millimeters, mm). This method will provide quantitative data on the durability and wear resistance of each type of mouthguard, helping to determine which type maintains its protective properties longer under the stress of regular use (Tewari et al., 2024). The mouthguard thickness will be measured at two distinct timepoints (baseline and three months)

    Measured: Three months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 May 2025
  2. Study startAug 2025 (estimated)
  3. Primary completionFeb 2026 (estimated)
  4. Study completionAug 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Model description
Participants will be randomly assigned in a 1:1 ratio to one of two groups: one group will receive traditional custom-made mouthguards, and the other will receive 3D-printed custom-made mouthguards. Each participant will remain in their assigned group throughout the study period, and outcomes will be assessed independently for each group.
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
60 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06972823
Sponsor's protocol ID
Custom Mouthguards and Speech
Acronym
Mouthguards
Status last verified
May 2025
First submitted
7 May 2025
Last updated
15 May 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided: Individual participant data (IPD) will be shared with qualified researchers upon request, following ethical guidelines and approval from the relevant ethics committee. The data will be anonymized to ensure participant confidentiality and will be made available through a secure data repository.

Publications

  • Vignesh, T. S., Chinni, S. K., Anumula, L., Sannapureddy, S., Kumar, Y. P., & Rohith, V. V. S. (2023). Knowledge, Attitudes, and Practices of Mouth Guards in the Prevention of Orofacial Injuries in Sports Persons-A Cross-sectional Study. Journal of Interdisciplinary Dentistry, 13(2), 84-89.

  • Tewari N, Kahler B, Srivastav S, Goel S. How far have we come? A historic scoping review of dental traumatology literature. Dent Traumatol. 2022 Oct;38(5):345-355. doi: 10.1111/edt.12760. Epub 2022 May 25.

    PubMed 35612349
  • Tanaka Y, Maeda Y, Yang TC, Ando T, Tauchi Y, Miyanaga H. Prevention of orofacial injury via the use of mouthguards among young male rugby players. Int J Sports Med. 2015 Mar;36(3):254-61. doi: 10.1055/s-0034-1390498. Epub 2014 Oct 20.

    PubMed 25329428
  • Sousa AM, Pinho AC, Messias A, Piedade AP. Present Status in Polymeric Mouthguards. A Future Area for Additive Manufacturing? Polymers (Basel). 2020 Jul 3;12(7):1490. doi: 10.3390/polym12071490.

    PubMed 32635307
  • Singh G, Garg S, Damle SG, Dhindsa A, Kaur A, Singla S. A study of sports related occurrence of traumatic orodental injuries and associated risk factors in high school students in north India. Asian J Sports Med. 2014 Sep;5(3):e22766. doi: 10.5812/asjsm.22766. Epub 2014 Aug 28.

    PubMed 25520762
  • Sadatsafavi M, Marra CA, Ayas NT, Stradling J, Fleetham J. Cost-effectiveness of oral appliances in the treatment of obstructive sleep apnoea-hypopnoea. Sleep Breath. 2009 Aug;13(3):241-52. doi: 10.1007/s11325-009-0248-4. Epub 2009 Feb 20.

    PubMed 19229577
  • Roberts HW. Sports mouthguard overview: Materials, fabrication techniques, existing standards, and future research needs. Dent Traumatol. 2023 Apr;39(2):101-108. doi: 10.1111/edt.12809. Epub 2022 Nov 27.

    PubMed 36436198
  • Ntovas P, Ladia O, Kois JC, Rahiotis C, Revilla-Leon M. Digital workflow for the fabrication of custom-fit additively manufactured sports mouthguards with balanced occlusion using an optical jaw tracking system: A dental technique. J Prosthet Dent. 2025 Nov;134(5):1536-1541. doi: 10.1016/j.prosdent.2024.07.021. Epub 2024 Aug 22.

    PubMed 39174379
  • Mordini L, Lee P, Lazaro R, Biagi R, Giannetti L. Sport and Dental Traumatology: Surgical Solutions and Prevention. Dent J (Basel). 2021 Mar 23;9(3):33. doi: 10.3390/dj9030033.

    PubMed 33806915
  • Mat Zainal MK, Liew AKC, Abdullah D, Soo E, Abdul Hamid B, Ramlee RAM. Changes in oral functions and speech when using custom-fitted mouthguards: An uncontrolled before-and-after study. Dent Traumatol. 2024 Aug;40(4):460-469. doi: 10.1111/edt.12939. Epub 2024 Mar 8.

    PubMed 38459669
  • Green JI. The Role of Mouthguards in Preventing and Reducing Sports-related Trauma. Prim Dent J. 2017 May 1;6(2):27-34. doi: 10.1308/205016817821281738.

    PubMed 28668098
  • Dias Goncalves VP, Fontes Vieira CM, Colorado Lopera HA. The production and materials of mouthguards: Conventional vs additive manufacturing - A systematic review. Heliyon. 2024 Jul 8;10(14):e34294. doi: 10.1016/j.heliyon.2024.e34294. eCollection 2024 Jul 30.

    PubMed 39092246
  • Dolic O, Obradovic M, Kojic Z, Knezevic N, Trtic N, Veselinovic V, Arapovic-Savic M, Umicevic-Davidovic M, Krcic V. Traumatic Dental Injuries in Children and Adolescents from a Major Dental Clinic in Bosnia and Herzegovina: A 5-Year Retrospective Study. Medicina (Kaunas). 2024 Nov 8;60(11):1843. doi: 10.3390/medicina60111843.

    PubMed 39597028
  • Del Rossi G, Lisman P, Signorile J. Fabricating a better mouthguard. Part II: the effect of color on adaptation and fit. Dent Traumatol. 2008 Apr;24(2):197-200. doi: 10.1111/j.1600-9657.2007.00570.x.

    PubMed 18352924
  • De Queiroz, T. S., da Cruz, B. S., Demachkia, A. M. M., Borges, A. L. S., Tribst, J. P. M., & Paes Junior, T. J. d. A. (2023). Ergonomic sports mouthguards: A narrative literature review and future perspectives. Applied Sciences, 13(20), 11353.

Questions about this trial

What is this clinical trial studying?

A study testing 3D printed custom-made mouthguards and Traditional custom-made mouthguards in people with Mouthguard Use and Orofacial Injuries Prevention, run by Cairo University at 1 site in Egypt.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 15 May 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Yasir M Aljadani, Bachelor's degree of dentistry (+201118888921, yasir.aljadani@dentistry.cu.edu.eg), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Changes Speech and in Oral Functions (time frame: Six months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06972823, which also lists 18 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 May 2025.

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