Some All-on-4® candidates have insufficient upper jaw bone in the posterior region — particularly after long-standing molar tooth loss when the maxillary sinus has expanded downward. Standard All-on-4® positions implants angled away from the sinus to use available anterior bone, but in some cases additional sinus lift surgery is required for adequate stability. This combined approach is more complex than standard All-on-4® but delivers fixed-bridge restoration to patients who would otherwise require traditional dentures.
When Combined All-on-4® + Sinus Lift Is Needed
CBCT scan reveals upper jaw anatomy. Combined approach considered when:
For some patients, the combined approach is the only path to fixed implant-supported restoration in the upper jaw without alternative options like zygomatic implants.
The Combined Surgical Protocol
Phase 1: Sinus Lift + Anterior Implants (Visit 1, 5-7 days)
Healing Window (4-6 months):
Phase 2: Posterior Implants in Grafted Bone (Visit 2, 4-5 days)
Healing Window (3 months):
Phase 3: Final Permanent Bridge (Visit 3, 2-3 days)
Total elapsed time: 8-10 months across 3 visits.
Why Three Visits
The biological timeline requires:
For patients in a hurry, alternatives exist:
CBCT-based planning identifies which approach suits your specific anatomy.
Materials and Brands Used
Bone graft material: Bio-Oss® (Geistlich, Switzerland) — gold-standard bovine-derived bone matrix with extensive clinical research base.
Membrane: Bio-Gide® (Geistlich, Switzerland) — resorbable collagen barrier preventing soft tissue invasion of graft area.
Implants: Straumann SLActive® preferred for grafted bone integration speed. Nobel Biocare TiUltra® for All-on-4® original protocol.
Final bridge: Prettau Zirconia (Zirkonzahn, Italy) monolithic for maximum strength on cantilevered bridge design.
Risk Profile and Honest Discussion
Combined sinus lift + All-on-4® has higher surgical complexity than either procedure alone:
WeCare discusses these risks honestly during planning. Some patients choose alternatives (zygomatic implants, dentures) after understanding the timeline.
Who Performs This Combined Case
At WeCare, combined sinus lift + All-on-4® is performed by Dr. Mehmet Yılmaz personally, due to the surgical complexity. He has performed approximately 80 combined cases over the past 5 years, with documented 92-95% long-term success.
What to Send Us
WhatsApp +90 551 086 83 68 with:
Within 48-72 hours (case complexity warrants longer review) we send written assessment of whether this approach is right for you, alternatives if more appropriate, full timeline, and individual quotation.

