Application of RW ⁃ splint in clinical diagnosis of class II1 malocclusion patients

Objective To investigate whether the RW⁃splint could be used to guide or determine the CR position of the lower jaw so as to provide help for the later diagnostic design. Methods 20 class III malocclusion patients were recruited in orthodontic department of Foshan Stomatological Hospital. They were treated by RW⁃splint for half a year before orthodontic treatment. The overjet of anterior teeth were recorded before and after treatment. Results The over⁃ jet of anterior teeth was (6.792 ± 0.795) mm before treatment and (7.720 ± 0.930) mm after half a years treatment. The overjet of anterior teeth had significant difference (t=6.319, P < 0.01). The overjet change of anterior teeth between be⁃ fore treatment and half year after treatment was (0.928 ± 0.657) mm. Conclusion The RW⁃splint wearing before treat⁃ ment can be used to guide or determine the mandible in the CR position.