CLINICAL FINDINGS
- Severely resorbed maxillary ridges
- Poor alveolar bone volume and quality
- Enlarged/pneumatized maxillary sinuses
- Knife-edge ridge deformities
- Failing maxillary implants in revision cases
- Fully or partially edentulous arches
- CBCT scans demonstrated:
- Severe ridge atrophy
- Bilateral sinus pneumatization
- Inadequate anterior-posterior spread for conventional implants
- Poor residual bone volume
- Severe posterior maxillary bone loss
- Limitations of conventional grafting procedures:
- Long treatment times
- Multiple surgeries
- Increased morbidity
- Increased cost
Advantages of zygomatic implants:
- Immediate loading capability
- Avoidance of sinus grafting
- Reduced treatment time
- High survival rates
- Use in severely atrophic maxillae
Importance of:
- CBCT-guided planning
- Proper anterior-posterior spread
- Surgical experience
- Prosthetic-driven implant positioning
Potential complications:
- Sinusitis
- Oroantral fistula
- Periorbital edema
- Sensory disturbances
Reported implant survival:
- Overall survival rate: 97.6%
- Quad zygoma: 95%
- Bilateral single zygoma: 98.7%
- Unilateral zygoma with premaxillary implants: 99.1%
Treatment Planning
TOPIC D - MAXILLARY ATROPHY ZYGOMATIC IMPLANTS
Severe maxillary atrophy preventing conventional implant placement Difficulty tolerating removable prostheses Desire for fixed implant-supported prosthetic rehabilitation Avoidance of extensive grafting procedures and prolonged healing times