抄録
We newly developed the maxillary prosthesis with sliding obturator using a kick-spring （Kick-spring maxillary prosthesis）. The sliding obturator is movable to secure stability of the prosthesis and its adequate contact force to the buccal mucosa. The present study was aimed to explore the clinical usefulness of this new-type prosthesis.
Five hemi-maxillectomized patients wearing a conventional maxillary prosthesis were enrolled in this study. First, their conventional prostheses were assessed as to masticatory and speech abilities. Also, self-evaluations for comfortableness, stability, easiness of attachment or removal, easiness of cleaning, and overall satisfaction for them were assessed. Then, the Kick-spring maxillary prostheses were worn and assessed as same manners.
As a result, although there were no significant differences in the masticatory and speech abilities between the 2-type prostheses, the Kick-spring maxillary prostheses were assessed to be better in patients with a severe limitation of mouth opening or excessive mobility of the buccal mucosa. No significant differences in the self-evaluations were also observed, but all assessments were higher for the Kick-spring maxillary prostheses.
In conclusion, the Kick-spring maxillary prosthesis could secure its stability and adequate contact force to the buccal mucosa to some degree.
