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Vertical Facial Morphology and Occlusal Force Changes After Masseter Botulinum Toxin Injection in Bruxism
Sponsor: Biruni University
Summary
This study investigated whether the shape of the face affects how jaw muscles respond to botulinum toxin injections in people who grind their teeth (bruxism). Participants were divided into two groups based on their facial structure: low-angle (shorter face height) and normal-angle. Each participant received botulinum toxin type A injections into the masseter (jaw) muscle. Bite force measurements were taken before and 15 days after the injection using the T-Scan computerized occlusal analysis system. The study aimed to determine whether facial structure influences the early changes in bite force balance following the injection.
Official title: Influence of Vertical Facial Morphology on Occlusal Force Changes After Masseter Botulinum Toxin Injection in Bruxism: A Prospective T-Scan Study
Key Details
Gender
All
Age Range
18 Years - 40 Years
Study Type
INTERVENTIONAL
Enrollment
34
Start Date
2026-02-09
Completion Date
2026-05-08
Last Updated
2026-06-29
Healthy Volunteers
No
Conditions
Interventions
Botulinum Toxin Type A (BOTOX) Injection
Botulinum toxin type A (Botox®, Allergan, Irvine, CA, USA) was injected bilaterally into the masseter muscle at a dose of 25 units per side (50 units total per patient). Injections were performed by a single experienced clinician under sterile conditions using a 30-gauge needle.
Locations (1)
Department of Orthodontics, Faculty of Dentistry, Biruni University
Istanbul, Istanbul, Turkey (Türkiye)