Observation on the effects of Tip-Edge Plus for bimaxillary protrusion / 重庆医科大学学报

ABSTRACT

Objective:To observe the clinical effects of Tip-Edge Plus appliance in treating bimaxillary protrusion patients and discuss its mechanics. Methods:20 patients with bimaxillary protrusion were treated with Tip-Edge Plus appliance. 4 premolars in all those cases were extracted. The results of cephalometric measurements of pretreatment and posttreatment were statistically analyzed to evaluate orthodontic effects. Results:20 patients received an average of 18 months of treatment,after treatment dental coverage and molar relations of these patients were in the normal range. Analysis of related projects cephalometric showed that patients with lateral outlook improved significantly,SNA,SNB and U1~L1 angle changes in hard tissue with significant difference in cephalometric measurements(P