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Updated: Jan 15, 2026

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Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla
Published on: October 18, 2021
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Incision and Flap Design in Zygomatic Implant Surgery: A ZAGA-Based Decision Tree
Summary
The ZAGA Concept uses a decision tree for individualized flap design in zygomatic implant surgery. This approach optimizes soft tissue management and stability for atrophic maxilla rehabilitation.
Area of Science:
- Oral and Maxillofacial Surgery
- Dental Implantology
Background:
- Rehabilitation of severely atrophic maxillae with zygomatic implants presents challenges in surgical access and soft tissue management.
- Minimizing dehiscence and ensuring long-term stability are critical for successful outcomes.
Purpose of the Study:
- To present the ZAGA Concept's individualized incision and flap design protocol for zygomatic implant surgery.
- To introduce a decision tree to guide flap selection based on anatomical and prosthetic parameters.
Main Methods:
- A decision tree was developed using five anatomical factors: bone discontinuities (CBCT), palatal mucosa thickness, implant platform position, buccal keratinized tissue width, and skeletal/dental Class III.
- Five flap types were defined: ZAGA Palatal Roll Flap, Partial Thickness Flap, Double Pedicle Flap, Buccal Fat Pad Flap, and Scarf Graft.
Main Results:
- Specific flap indications were identified based on anatomical context.
- Proper flap selection improved soft tissue coverage, preserved/increased keratinized mucosa, and reduced complications.
- The decision tree facilitated systematic and reproducible flap selection.
Conclusions:
- Integrating individualized incision and flap design into surgical planning optimizes soft tissue management for zygomatic implant therapy.
- The proposed decision tree provides an anatomy-driven protocol for improved outcomes in atrophic maxilla rehabilitation.

