An observational study in Malocclusion, Angle Class II, sponsored by Central Hospital, Nancy, France. Status unknown at 1 site in France. Open to participants aged 13 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-07-23.
Sponsored by Central Hospital, Nancy, France · Observational
The objective is to compare the dento-alveolar therapeutic effects of wearing class II inter-arch traction elastics on aligners versus multi-brackets in an adult population. The principal hypothesis is no significant difference in therapeutic effects of using inter-arch elastics on aligners versus multi-brackets.
It is a non-interventional research involving the human person, research on existing data and / samples in the field of dentofacial orthopedics. This study analyzes the effects of rubber bands when combined with aligners in adult patients. This is a comparative retrospective study of radiographs and casts before and after orthodontic treatment. The patients studied are in Angle class II and adults. Two groups are analysed: patients treated with fixed (vestibular multi-attachment) and removable (Invisalign-type aligners) appliances.
127 studies on the registry are indexed under Malocclusion, Angle Class II; 18 are open to participants now.
This study's planned enrollment of 80 is above the median of 72 across 13 observational studies indexed under Malocclusion, Angle Class II.
Browse Malocclusion, Angle Class II studies →Central Hospital, Nancy, France is the lead sponsor of 796 studies on the registry; 187 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Adult with class II malocclusion treated with class II elastics
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Patient with class II malocclusion, treated with class II elastics on aligners
Combination Product: Aligner and inter-arch elastics
Patient with class II malocclusion, treated with class II elastics on fixed appliance
Correction of class II malocclusion by class II elastics on clear aligners
Change in IMPA Mandibular incisor angle (degrees)
Angle between the mandibular plane and the lower incisor axis: position of the lower incisor in relation to the mandible
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months.
Sex
Sex
Time frame: 1 month
Duration of treatment
Treatment time duration in month
Time frame: 24 months
Change in interproximal dental size
Interproximal size in mm
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in skeletal sagittal pattern ANB angle
Cephalometric measurements : angle between A, Na (nasion) and B in degrees
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in skeletal sagittal pattern Ao-Bo
Cephalometric measurements : mesure in mm between Ao and Bo
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in skeletal vertical pattern : FMA
Cephalometric measurements : angle in degrees between franckfort plan and mandibular plan.
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in skeletal vertical pattern : Sn Gogn
Cephalometric measurements : angle in degrees between SN and GoGn
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in faciale anterior height
Cephalometric measurements of faciale anterior height
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in faciale posterior height
Cephalometric measurements of faciale posterior height
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in index Faciale height
Cephalometric measurements, index HFP (faciale posterior heigth)/ HFA (faciale anterior height)
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in nterincisal angle
Cephalometric measurements : measurement between manxillary and mandibular incisors.
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in plan of occlusion
Cephalometric measurements : angle between SN and Op
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Age at the beginning of treatment
Age
Time frame: 1 month
Age at the end of treatment
Age
Time frame: 24 months
Change in von Spee curve
Measurements on impressions : it is the average of the distance between the highest point of the deepest cusp and the occlusal plane.
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in overall crowding
Measurements on impressions : comparison of the sum of the mesiodistal diameters of 35 to 45 and the arch perimeter from the mesial face of 36 to the mesial face of 46.
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in overjet
Measurements on impressions : in mm
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in overbite
Measurements on impressions : in mm
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in arch length
Measurements on impressions : distance between inter incisal point and mesiale face of 6.
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
CHange in class II quantity
Measurements on impressions : inter canine and inter molar relations
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in space required
Measurements on impressions : sum of all mesiodistal diameter.
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in inter canine distance
Measurements on impressions : distance between the canine in mm
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in inter premolar distance
Measurements on impressions : distance between the premolars
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
Change in inter molar distance
Measurements on impressions : distance between the molars
Time frame: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months
This study is status unknown, as verified in Jul 2024. You cannot join it, but the record below documents what was studied.
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