Abstract
ObjectiveThe aims of this paper are to demonstrate two cases of implant migration into the maxillary sinus and to give a short review of the literature on this subject.Clinical procedureTwo patients were diagnosed with implant migration into the maxillary sinus. After thorough radiographic examination which revealed the exact position of the implants inside the maxillary sinus, removal was performed through a bony window in the anterior-lateral aspect of the maxillary sinus for both cases.DiscussionImplant displacement into the maxillary sinus can occur intraoperatively or postoperatively either prior to implant loading or after functional loading. Several actors can lead to this complication differing according to the stage of the displacement.Management of this complication is achieved using four surgical techniques: a. Functional endoscopic sinus surgery, b. intraoral removal by the Caldwell-Luc technique, c. removal through the alveolar bone, d. combination of the last two techniques. If implant displacement into the maxillary sinus remains untreated, it can lead to several complications with various effects.ConclusionMigration of dental implants into the maxillary sinus is a rare but severe complication which must be treated as soon as possible.
Highlights
Over the past three decades, implant-supported prosthesis has become very popular for the rehabilitation of edentulousness
The present paper demonstrates two cases of dental implant displacement into the maxillary sinus, as well as Gnigou et al International Journal of Implant Dentistry
An obvious explanation for this finding could be the rise in the number of patients treated with dental implants over the last years in combination with the fact that implant placement is performed by dentists with short of experience in many cases [11]
Summary
The incidence of implant displacement into the maxillary sinus remains unknown because of the lack of cohort studies and the relatively few published case reports [9]. The second procedure is based on the intraoral removal of the displaced implant by performing the Caldwell-Luc technique [11] This involves the creation of a bony window in the anterior-lateral aspect of the maxillary sinus and the retrieval of the displaced implant through that window [11]. The fourth choice of surgical management of this complication involves the combination of the endoscopic and the intraoral approach (Caldwell-Luc technique) This combined procedure is being performed whenever implant displacement into the maxillary sinus is associated with signs and symptoms of sinusitis, obstruction of the maxillary ostium and oroantral communication [11]
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