Effect of Cervical Manipulation on Mouth Opening

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05416788

Enrollment

Registered

2022-06-13

Start date

2022-05-11

Completion date

2022-05-11

Last updated

2022-06-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bruxism, Face Pain

Brief summary

Objectives: To compare the effects of cervical manipulation on the ranges of motion of mouth opening and painful pressure points in the masseter and temporal muscles after of cervical manipulation compared to the control group. Material and methods: Single-blind randomized clinical trial with two arms, one group intervention and a control group. Hypothesis: There is a significant difference in mouth opening and painful pressure points between the intervention group and the control group. Expected results: The intervention group would significantly increase their mouth opening maximal and decrease pressure pain in the masseter and temporalis muscles.

Interventions

OTHERcervical manipulation

high-velocity, low-amplitude cervical manipulation

OTHERSham intervention

lateral flexion and cervical rotation without manipulation

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Subject)

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* Subjects over 18 years of age, men and women * Students with neck and/or facial pain minimum 3/10 VAS scale * Kinesiology students who regularly attend face-to-face classes who have a mobility pass and a health declaration. · Students who read and sign the informed consent.

Exclusion criteria

* Orthognathic surgery * Head and neck fracture or injury * Contraindication (red flag) to perform high-speed, low-amplitude cervical manipulation (bone cancer, osteoporosis, vertebral artery injury, etc.) * Positive cervical safety tests (example: Klein test positive)

Design outcomes

Primary

Measure	Time frame	Description
normal mouth opening in millimeters	Change from Baseline mouth open at 5 minutes	With a buccal goniometer, the maximum mouth opening will be measured in millimeters.

Secondary

Measure	Time frame	Description
masseter muscle pressure points	Change from Baseline pain points at 5 minutes	Pain points will be measured under pressure with a pressure pain meter or algo meter. This measurement will be measured in kilograms.

Countries

Chile

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026