Effectiveness of Auxiliary Segmental Lingual Appliances in Leveling the Curve of Wilson at Second Molars
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18+
SponsorHanoi Medical University
About this trial
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.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
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.
Disqualifiers
Patients with limited mouth opening and gagging reflex preventing placement of auxiliary segmental lingual appliances.
Trial design
Design model
Crossover
Treatments tested in this trial
Auxiliary Segmental Lingual Appliances
Procedure/SurgeryThis 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.
Treatment groups
20 Participants
are divided into 2 treatment groupsGroup A: Auxiliary Segmental Lingual Appliances Intervention in One SideExperimental treatment 1 intervention
Group B: Control in Another SideNo intervention 0 interventions
Trial outcomes
Primary outcomes
1
Curve of Wilson at Second Molar
This measure evaluates the angle between the occlusal plane of the second molar and the mandibular arch occlusal plane. Measurements will be taken using digital impressions.
Time frame
Baseline, 6 months, 9 months.2
Distance from Mesiolingual Cusp of Second Molar to Occlusal Plane of First Molar
This measure evaluates the distance from the mesiolingual cusp of the second molar to the occlusal plane of the first molar. Measurements will be taken using digital impressions.
Time frame
Baseline, 6 months, 9 months.3
Distance from Distolingual Cusp of Second Molar to Occlusal Plane of First Molar
Description: This measure evaluates the distance from the distoolingual cusp of the second molar to the occlusal plane of the first molar. Measurements will be taken using digital impressions.
Time frame
Baseline, 6 months, 9 months.Secondary outcomes
1
Curve of Wilson at First Molar
Description: This measure evaluates the angle between the occlusal plane of the second molar and the mandibular arch occlusal plane. Measurements will be taken using digital impressions.
Time frame
Baseline, 6 months, 9 months.Sponsors and contacts
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Source ClinicalTrials.gov