Completed

Speech Performance of Rugby Players When Using Different Types of Mouthguard

0 criteria met from your profileSee at a glance how your profile meets each eligibility criteria.
What is being tested

no mouthguard

+ 'boil and bite' mouthguard

+ custom-fitted mouthguard

Device
Who is being recruted

Behavior+1

+ Communication

+ Speech

Over 18 Years
+8 Eligibility Criteria
See all eligibility criteria
How is the trial designed

Supportive Care Study

Interventional
Study Start: May 2018
See protocol details

Summary

Principal SponsorAmy Liew
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: May 18, 2018

Actual date on which the first participant was enrolled.

Participation in contact sports is linked to an increased risk of dental injuries. To reduce the risk and severity of sports-related dental injuries, mouthguards are often recommended to be worn during training and competition. However, athletes often complain that they cannot talk properly when using mouthguards. It is hypothesized that speech performance differs when using different types of mouthguards. A group of female national rugby players will be asked to pronounce four Malay words with plosive sounds (/p/, /b/, /d/ and /t/) repeatedly in three conditions: (i) when not using any mouthguard, (ii) when using 'boil and bite' mouthguard, and (iii) when using custom-fitted mouthguard. The sounds will be recorded for spectrographic analysis. The difference in mean voice onset time between conditions will be assessed.

Official TitleSpeech Performance of Rugby Players When Using Different Types of Mouthguard
NCT04010500
Principal SponsorAmy Liew
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

30 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Supportive Care Study

These studies explore ways to improve comfort and daily life for people living with a condition. They may focus on easing symptoms, reducing treatment side effects, or supporting overall well-being.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Female

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

BehaviorCommunicationSpeechVerbal Behavior

Criteria

3 inclusion criteria required to participate
adult female aged 18 years old and older
currently representing the nation and participating actively in rugby
native speakers of Malay (national language)
5 exclusion criteria prevent from participating
did not play rugby within the last six months
edentulism
used a mouthguard, orthodontic appliance or removable prosthodontics appliance within the last six months
known history of allergy to polymers
Show More Criteria

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

One single intervention group is designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Experimental

Study Objectives

Primary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

Universiti Kebangsaan Malaysia

Kuala Lumpur, MalaysiaOpen Universiti Kebangsaan Malaysia in Google Maps
CompletedOne Study Center
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