Effectiveness of Auxiliary Segmental Lingual Appliances in Leveling the Curve of Wilson at Second Molars
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Auxiliary Segmental Lingual Appliances.
- Who it may be relevant to
- Registry conditions: Malocclusion, Malocclusion; Displaced or Missing Teeth, Malocclusions, Orthodontic Treatment. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Vietnam
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
This study aims to evaluate the effectiveness of auxiliary segmental lingual appliances in leveling the Curve of Wilson at the second molars in patients undergoing labial fixed orthodontic treatment. Patients exhibiting an excessive (deep) Curve of Wilson at the second molar bilaterally (meaning lingually inclined mandibular second molar) will be recruited.. Using a split-mouth design, one side will receive the intervention (auxiliary segmental lingual appliances), while the other side will serve as the control. The variables measured include 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. Measurements will be taken on digital impressions at baseline (T0), after leveling with a stainless steel labial archwire (T1), and three months after applying the auxiliary segmental lingual appliances. The effectiveness will be assessed by comparing the two groups.
Detailed description
This study focuses on evaluating the effectiveness of auxiliary segmental lingual appliances in leveling the Curve of Wilson at the second molars in patients undergoing labial fixed orthodontic treatment. The study will recruit patients who exhibit an excessive (deep) Curve of Wilson at the second molar bilaterally (meaning lingually inclined mandibular second molar). A split-mouth design will be employed, where one side of the mouth will receive the intervention (auxiliary segmental lingual appliances), and the other side will serve as the control.
The primary variables measured include 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. These measurements will be taken using digital impressions at three different time points: baseline (T0), after leveling with a stainless steel labial archwire (T1), and three months after the application of the auxiliary segmental lingual appliances.
The study aims to compare the effectiveness of the auxiliary segmental lingual appliances by analyzing the differences between the intervention and control sides. This comparison will help determine the impact of the appliances on achieving a more balanced and functional occlusal plane, potentially improving orthodontic treatment outcomes for patients with malocclusion issues.
Interventions
- Procedure Auxiliary Segmental Lingual Appliances
This intervention involves the use of auxiliary segmental lingual appliances specifically designed to level the Curve of Wilson at the second molars in patients undergoing labial fixed orthodontic treatment. The primary goal is to adjust the lingual inclination of the mandibular second molar, thereby achieving a more balanced and functional occlusal plane.
Primary outcome measures
- Curve of Wilson at Second Molar [Time frame: Baseline, 6 months, 9 months.]
- Distance from Mesiolingual Cusp of Second Molar to Occlusal Plane of First Molar [Time frame: Baseline, 6 months, 9 months.]
- Distance from Distolingual Cusp of Second Molar to Occlusal Plane of First Molar [Time frame: Baseline, 6 months, 9 months.]
Secondary outcome measures (1)
- Curve of Wilson at First Molar [Time frame: Baseline, 6 months, 9 months.]
Eligibility criteria
Inclusion criteria
- Patients undergoing labial fixed orthodontic treatment.
- Patients exhibiting an excessive (deep) Curve of Wilson at the second molar bilaterally (meaning lingually inclined mandibular second molar).
- Patients willing to participate and provide informed consent.
Exclusion criteria
- Patients with limited mouth opening and gagging reflex preventing placement of auxiliary segmental lingual appliances.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Crossover
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
Vietnam · 1 center
- Phenikaa University — Hanoi
Identifiers
NCT: NCT06858670 · 240304