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Maxillary sinus floor augmentation (or “sinus lift”) generally requires a bone graft, but reports of nongrafted sinus lift have been published. However, lifted sinus membrane tends to be unstable, because support is provided solely by the implant apex in this surgical procedure. In particular, the tent pole effect is concentrated on one point and the lifted sinus membrane tends to hang down in cases of single implant placement for a single tooth defect. Creation of additional space between the lifted sinus membrane and maxillary sinus bottom bone is therefore considered necessary. The purpose of this study was to evaluate use of a titanium bone fixation device (titanium plate and screw) and ultraviolet-light (UV)-photofunctionalized implant in nongrafted sinus lift for a single tooth defect in 4 cases with panoramic radiography and dental cone beam computed tomography.
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