The Treatment of Skeletal Class II-Malocclusion with  “INTERMAXILLARY LIP BUMPER”:

The achievement of esthetic and functional optimum of the Angle's Class II Division I- malocclusion requires correcting of the Distal-bite. However, many studies have recently revealed that most of Cl. II cases are due to Retro-gnathic mandible. Thus, many functional appliances have been invented to stimulate mandibular advancement.

 The aim of this study is to evaluate the skeletal and Dento-alveolar changes during the treatment Cl.II/1- malocclusion, using our recently invented Intermaxillary lip bumper (Youssef & Aldomaini).

Method:  

The issue was approached by studying lateral cephalograms of 25 patients (12males, 13females) with CL.II/1-malocclusion, treated with the “INTERMAXILLARY LIP BUMPER”.

It were taken 2 cephalograms for every patient; T1-before treatment and T2-after treatment. Overall, 50 lateral cephalograms were studied with 18 reference variables being taken into account. The data obtained were subjected to statistical analyses using the t-test to detect significant differences between before- and after- treatment.

Result:  

Significant differences between after- and before treatment were found in the Variables: Bjork-sum., Co-Pog. N-s: spp, N-S:GoMe, B,SNB, ANB, SNPog., L Lip: E Line, and U1:N-S.

Conclusion:

the “INTERMAXILLARY LIP BUMPER” can lead to improvement in the: mandibular position –and rotation, jaw relationship, facial growth type, and facial profile in addition to the correction of the Molar relationship and Incisor axis.