Actively Recruiting
Effectiveness of Auxiliary Segmental Lingual Appliances in Leveling the Curve of Wilson at Second Molars
Led by Hanoi Medical University · Updated on 2025-03-05
20
Participants Needed
1
Research Sites
N/A
Total Duration
On this page
AI-Summary
What this Trial Is About
Researchers are evaluating the effectiveness of auxiliary segmental lingual appliances in leveling the Curve of Wilson at the second molars for patients undergoing labial fixed orthodontic treatment. This study focuses on patients with an excessive (deep) Curve of Wilson at the second molars on both sides, which means a lingually inclined mandibular second molar. Using a split-mouth design, one side of the mouth will receive the appliance while the other side serves as a control to compare the results. The study involves applying auxiliary segmental lingual appliances to one side of the mouth to adjust the lingual inclination and level the lingual cusps of the mandibular second molar. The other side will not receive this intervention. Measurements of the Curve of Wilson at the second and first molars, and the distance from the mesiolingual and distolingual cusps of the second molar to the occlusal plane of the first molar will be taken using digital impressions at three time points: baseline, after leveling with a stainless steel labial archwire, and three months after appliance application. Participants will be assessed through digital impressions at baseline, six months, and nine months to measure changes in the Curve of Wilson and cusp distances. Researchers will compare the treated and untreated sides to evaluate the appliance's impact on occlusal plane balance. The study will monitor these changes over nine months to understand how the appliances affect orthodontic treatment outcomes for patients with malocclusion issues.
CONDITIONS
Brief Title
Effectiveness of Auxiliary Segmental Lingual Appliances in Leveling the Curve of Wilson at Second Molars
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Patients undergoing labial fixed orthodontic treatment.
- Patients exhibiting an excessive (deep) Curve of Wilson at the second molar bilaterally (lingually inclined mandibular second molar).
- Patients willing to participate and provide informed consent.
You will not qualify if you...
- Patients with limited mouth opening and gagging reflex preventing placement of auxiliary segmental lingual appliances.
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - 9 months
Participants undergo labial fixed orthodontic treatment with auxiliary segmental lingual appliances applied to one side of the mouth to level the Curve of Wilson at the second molars, while the other side serves as control.
Visits at baseline, 6 months, and 9 months for digital impressions and assessments
Trial Site Locations
Total: 1 location
1
Phenikaa University
Hanoi, Vietnam, 12116
Actively Recruiting
Research Team
V
Viet Anh Nguyen, DDS, MS
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
CROSSOVER
Primary Purpose
TREATMENT
Number of Arms
2
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