Zygoma implants are a breakthrough solution for patients who have severe upper jaw bone loss and cannot receive traditional implants. But depending on the level of bone resorption, a surgeon may choose between Dual Zygoma (one per side) or Quad Zygoma (two per side).

This guide explains the difference in a simple, patient-friendly way so you understand which option may be right for your condition.

What Are Zygoma Implants? (Quick Recap)

Zygoma implants anchor into the cheekbone, not the jawbone.

Why?

Because the jawbone (maxilla) may have:

• Shrunk dramatically

• Lost density

• Been affected by gum disease

• Been damaged by long-term dentures

• Become hollow due to expanded sinuses

The cheekbone (zygoma) remains strong, dense, and ideal for anchoring implants.

What Is Dual Zygoma?

Dual Zygoma = 1 implant per side (2 total).

It is used when:

• The patient has severe posterior bone loss

• The sinuses are expanded

• Traditional implants cannot be placed

• Full-arch fixed teeth are needed without bone grafting

Benefits:

✔ Strong support

✔ No bone grafts

✔ Immediate teeth possible

✔ Excellent long-term success

Dual Zygoma is often enough for many severe cases — but not always.

What Is Quad Zygoma?

Quad Zygoma = 2 implants per side (4 total).

It is used when:

• Bone is extremely deficient

• Sinuses are very enlarged

• The anterior bone is weak or missing

• Previous implants or grafts have failed

• Denture suction is impossible

• The maxilla is classified as Cawood & Howell V–VI

• Full-arch support requires maximum stability

Quad Zygoma is the highest-level zygomatic implant solution available today.

⭐Quad Zygoma vs Dual Zygoma — Key Differences

If Dual Zygoma is like “advanced implants,”Quad Zygoma is like “super-advanced implants.”

How Surgeons Decide Between Dual and Quad Zygoma?

A CBCT scan will show:

• Sinus size

• Remaining maxillary bone

• Zygoma angulation

• Quality of the anterior ridge

• Implant pathway clearance

Based on this:

Dual Zygoma is chosen when:

✔ Moderate–severe posterior bone loss

✔ Good anterior bone

✔ Stable prosthetic support possible

Quad Zygoma is chosen when:

✔ Extreme bone loss (no posterior support)

✔ No anterior anchorage available

✔ Previous implant failures

✔ Want maximum long-term stability

In simple words:

💡 If Dual Zygoma is not enough, Quad Zygoma becomes necessary.

Benefits of Quad Zygoma Implants

• Fixed teeth within 72 hours

• Zero bone grafts

• Zero sinus lifts

• Works in almost all severe cases

• Extremely strong anchorage

• High survival rates

• Life-changing for long-term denture wearers

Quad Zygoma is often the last hope for patients denied implants elsewhere.

Why Only OMFS Surgeons Perform Quad Zygoma?

Zygoma implants pass near critical structures:

• Sinus

• Nasal cavity

• Cheekbone

• Orbital rim

Precise angulation and deep anatomical knowledge are required.

Quad Zygoma should only be performed by:

• Oral & Maxillofacial Surgeons (OMFS)

• Surgeons trained in Zygomatic implantology

• Clinicians experienced with full-arch immediate loading

This makes experience the most important factor in success.

Can Both Techniques Be Combined?

Yes.

Some cases use:

• One Zygoma + one Pterygoid implant per side

• Zygoma + anterior + pterygoid combination

• Zygoma + basal support

This depends entirely on the CBCT evaluation.

Zygoma Treatments at YOUR DENTIST

YOUR DENTIST is one of the few centers trained and equipped for:

• Dual Zygoma

• Quad Zygoma

• Pterygoid implants

• Hybrid protocols (PATZI, Zygoma + Pterygoid)

• Immediate full-arch fixed teeth

• Full digital planning + CBCT-based approach

Led by Dr. E. Surendranath, MDS Oral & Maxillofacial Surgery, the clinic treats complex cases that were previously considered “impossible.”