- Age: 45
- Gender: female
- Partial loss of tooth on 3.5 (LL5), 3.6 (LL6), 3.7 (LL7)
Total Treatment Visits
App 1: The recommendation was to replace the existing two implants. Treatment planning: done.
App 2: Removed two osteointegrated fixtures with bone trephine. Implants were placed at #35, #37 edentulous areas. Due to low insertion torque at #37, only one healing abutment was attached.
App 3: Stitches were removed one week later.
App 4. Three months later, flap was elevated. Implant failure #37 was replaced.
App 5. Stitches were removed one week later.
App 6. Two scan bodies were attached with fixtures and scan body scan was performed.
App 7. A three-unit implant-supported bridge was fabricated. The bridge was tightened twice with 30 Newton torque.
History of presenting illness: A 45/F, received lower cantilever implant-supported bridge around ten years ago.
Unfortunately, the screw was fractured and the bridge dislodged because of an unfavorable occlusal loading design. Treatment of the third quadrant included removal and replacement of the existing two implants.
The treatment process was elongated because of the failed osteointegrated fixture at lower left second molar.
Although most clinicians would agree that the cantilevered implant-supported bridge is a viable option due to unfavorable atrophy ridge, the possibility of fixation screw breakdown is not as low as expected. Adequate bone augmentation and soft tissue graft should be seriously considered to achieve favorable force distribution. iTero intraoral scanner has been proved to be applied in routine prosthesis fabrication.