Status:
COMPLETED
Effects of Dose and Injection Site for Gummy Smile Treatment With Botulinum Type A
Lead Sponsor:
Peking University
Conditions:
Smiling
Botulinum Toxins, Type A
Eligibility:
All Genders
18-60 years
Phase:
PHASE4
Brief Summary
Botulinum type A (BTX-A) is an easy and efficacious treatment for gingival smile (GS). However, its dosage and injection sites effect among patients are controversial.The objective was to compare the ...
Detailed Description
The smile is one of universal facial expressions of the humans. Gingival smile (GS) or gummy smile defined as any exposure of the gingiva \>2 or 3 mm upon smiling, and can substantially vary from pati...
Eligibility Criteria
Inclusion
- ≥ 3.0-mm anterior gingival exposure upon unrestricted, "full-blown" smiling
- healthy adults
Exclusion
- contraindication of BTX-A
- previous diseases or treatments affecting the position of the gingiva or upper lips
- history of BTX-A injections to the head or neck region
- facial paralysis
- having received and/or receiving active orthodontic treatment that includes vertical dimension treatment, such as extrusion and intrusion, and presence of periodontal disease
- subject's refusal to participate
Key Trial Info
Start Date :
February 20 2019
Trial Type :
INTERVENTIONAL
Allocation :
ACTUAL
End Date :
June 20 2020
Estimated Enrollment :
55 Patients enrolled
Trial Details
Trial ID
NCT04820543
Start Date
February 20 2019
End Date
June 20 2020
Last Update
April 1 2021
Active Locations (1)
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1
Peking University School and Hospital of Stomatology
Beijing, Beijing Municipality, China, 100010