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[The design, functions and clinic applications of lip bumper]
1Department of Orthodontics, College of Stomatology, West China University of Medical Sciences.
Objective:
This paper introduced the principle of design, methods of fabrication, indications and functions of lip bumper, and advocated the application of lip bumper in orthodontic clinic.
Methods:
Two typical cases treated with lip bumper were introduced. Some notices and experiences of applying lip bumpers were summed up.
Results:
There were following functions of lip bumper: as a space maintainer, Fränkel effect, headgear effect, post-maxillary expansion retention, derotation of molars, and combined using with headgear.
Conclusion:
The advantages of lip bumper are inclusions of a wide range of indication, wearing for 24 hours per day, easily fabricating and prefabricating, comfortable and hidden for patients.
