Fixed functional appliances are designed to provide a simple non-compliant solution to orthodontic Class II treatment. Molar correction can be achieved very quickly using these appliances, but the clinician should be wary of unexpected breakages. This case report documents such an occurrence using a unilateral fixed functional appliance.
HeikkinenT, PoikelaT, GrönM, AlvesaloL.Unilateral Angle II in functional lateralities. Eur J Orthod2004; 26: 93–98.
2.
HolmanJK, HansMG, NelsonS, PowersMPAn assessment of extraction versus nonextraction orthodontic treatment using the peer assessment rating (PAR) index. Angle Orthod1998; 68: 527–34.
3.
HaackDC, WeinsteinSThe mechanics of centric and eccentric cervical traction. Am J Orthod Dentofacial Orthop1958; 44: 236–57.
4.
BaldiniGUnilateral headgear: lateral forces as unavoidable side effects. Am J Orthod Dentofacial Orthop1980; 77: 333–40.
5.
YoshidaN, Jost-BrinkmannP, MiethkeR, KonigM, YamadaY.An experimental evaluation of effects and side effects of asymmetric face bows in the light of in vivo measurements of initial tooth movements. Am J Orthod Dentofacial Orthop1998; 113: 558–66.
6.
PancherzHTreatment of Class II malocclusions by jumping the bite with the Herbst appliance: a cephalometric investigation. Am J Orthod1979; 76: 423–42.
