PMC4711110_01
a Panoramic radiograph. b, c Computed tomography images obtained prior to the operation (b, axial section; c, coronal section)
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Fig1
Panoramic radiograph and computed tomography (CT) images showed what appeared to be the implant apparently dislocated to within the anterior part of his maxillary sinus (Fig. 1a, b, c).
a Osteotomy line of bony window. b The bone lid was removed. c Endoscopic view of migrated dental implant in the right maxillary sinus. d The bony segment was repositioned and secured with an absorbable suture
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Fig2
Schneiderian membrane was utilized. Surgical intervention began with elevation of a trapezoidal full-thickness mucoperiosteal flap (Fig. 2a); then a low-speed straight handpiece and fissure bur were used to drill four holes in his maxillary bone. The bone lid was removed (Fig. 2b), and we inserted a rigid endoscope 4 mm in diameter equipped with a digital video unit (KARL STORZ Endoscopy Japan Inc., The implant was identified using a rigid endoscope and removed with a surgical aspirator (Fig. 2c). The bony segment was then repositioned and secured with an absorbable suture (Fig. 2d).
a Panoramic radiograph obtained 1 week after surgery. b, c Computed tomography images obtained 6 months after surgery (b, axial section; c, coronal section)
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Fig3
After 7 days, the sutures were removed and a follow-up examination was performed, including panoramic X-ray imaging (Fig. 3a). At 6 months after removal of the displaced implant CT images were obtained (Fig. 3b, c).