Use of full slot labially pretorqued vs. plain mandibular archwires in combination with the Forsus fatigue resistance device in class II malocclusions : A clinical trial.
Sujala Ganapati Durgekar, Pratyaksha Shetty, Amit Rekhawat et al.
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In 30 seconds
This clinical trial compared Forsus treatment with a labially pretorqued mandibular archwire versus a plain archwire in patients with Class II malocclusion, alongside an untreated control group. The 31 participants were assessed using lateral cephalograms before treatment and at correction, after an average of 6 ± 2 months. Both treated groups achieved Class I molar relationships and overjet and overbite correction. Lower-incisor position did not differ significantly between the two treatment groups, and the authors reported broadly similar improvements with either wire.
Key findings
- Class I molar relation and overjet and overbite correction were achieved in both Forsus treatment groups.
- Lower-incisor position did not differ significantly between the pretorqued-wire and plain-wire groups.
- Changes in incisor inclination, molar position, and overjet were significant between treated groups and untreated controls.
- The pretorqued-wire group showed greater distal positioning of maxillary point A, but this difference was not statistically significant.
Why it matters
The findings suggest that, in this trial, using a labially pretorqued mandibular archwire with Forsus did not produce a significant advantage over a plain wire in lower-incisor position. This is relevant when interpreting claims that wire torque may limit incisor proclination during Class II correction; the reported outcomes also include dental changes relative to an untreated control.
What to keep in mind
The trial included 31 participants divided among three groups, and assessment was based on cephalograms at correction after an average of 6 ± 2 months; longer-term outcomes are not reported.