Design and application of new training device of mouth opening

VernacularTitle:一种新型张口训练装置的设计与应用
Author: Feng-Hua SU ¹ ; Zhu-Bao HUANG
Author Information

1. 解放军180医院口腔颌面外科
Keywords: new mouth opening training device; mandible fracture; difficulty in opening mouth; department of stomatology
From: Chinese Medical Equipment Journal 2017;38(12):37-39
CountryChina
Language:Chinese
Abstract: Objective To design a new type of mouth opening training device.Methods The device had a semicircular structure,and was composed of upper and lower bite blocks,a spring and a regulation mechanism.The bite blocks were made by one-step injection molding,and the spring and regulation mechanisen were manufactured by metal forming.Totally 88 patients with restriction of mouth opening after mandible fracture surgery in the oral surgery department from January to December 2016 were randomly divided into two groups,and each group had 44 patients.The control group used the traditional bite block for mouth opening training,and the experimental group applied the developed training device.Training was started 10 d after surgery,and the training time lasted 3 to 6 months.Results The experiment group behaved significantly better than the control group in maximal mouth opening (P＜0.05) and patient comfort (P＜0.01).Conclusion The training device gains advantages in easy operation,patient comfort,flexibility for regulation,cleaning and maintenance and patient compliance,and thus is worthy promoting clinically.