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Imaging of osseointegrated implants in the temporal bone by accuitomo 3-dimensional cone beam computed tomography
Gösta Granström1, Hans-Göran Gröndahl
1Department of Otolaryngology, Head and Neck Surgery, Sahlgrenska Academy at University of Gothenburg, Sweden. gosta.granstrom@orlss.gu.se
Objective:
Follow-ups of osseointegrated implants in the temporal bone have been limited to clinical stability and resonance frequency measurements. Standard computed tomographic scanning is restricted because of the high radiation doses to the brain and the presence of disturbing metal artifacts. The present study was undertaken to evaluate the use of cone beam computed tomography preoperatively and postoperatively.
Study Design:
Prospective investigation of patients intended for implant surgery and patients participating in a follow-up protocol.
Setting:
Tertiary referral center.
Patients And Methods:
Patients with osseointegrated implants and patients intended for implants in the temporal bone for bone-anchored epistheses and bone conduction hearing devices were investigated by a 3-D Accuitomo cone beam computed tomography machine. Images in sagittal, coronal, and axial planes were obtained and analyzed in a personal computer. Preoperative and postoperative views were analyzed regarding implant integration, bone resorption, anatomic landmarks, and implant failure.
Results:
Eighteen patients were included in the study. With the used technique, it was easy to detect air cells, the sigmoid sinus, and posterior fossa and to recommend an ideal implant installation site. Bone resorption, bone overgrowth, and implant connex to air cells and dura were easy to detect.
Conclusion:
Accuitomo cone beam tomography showed to be a reliable method for investigating osseointegrated implants in the temporal bone.
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