Why Is Bone Grafting Needed?

Dental implants require a minimum volume of healthy bone to be placed securely. When a tooth is lost, the jawbone in that area begins to resorb (shrink) — because it no longer receives stimulation from a tooth root. The longer a tooth has been missing, the more bone is typically lost.

Bone grafting rebuilds this lost volume, creating the foundation necessary for successful implant placement.

How Much Bone Loss Occurs After Tooth Loss?

Timeframe After Extraction Bone Loss

First 3 months 40–60% of width lost

First year Up to 25% of height lost

3 years Continued progressive loss

Long-term Significant ridge collapse possible

This is why prompt tooth replacement or socket preservation after extraction is strongly recommended.

Types of Bone Grafting Procedures

Socket Preservation (Ridge Preservation)

When: Immediately after tooth extraction
Purpose: Minimizes bone loss during the healing period

• Graft material placed directly into the extraction socket

• Membrane placed over the socket to protect the graft

• Allows the site to heal with maintained bone volume

• Reduces or eliminates the need for larger grafting later

• Healing: 3–4 months before implant placement

Localized Ridge Augmentation

When: Before implant placement in an area of existing bone loss
Purpose: Rebuilds width and/or height of the bone ridge

• Graft material placed against the deficient area

• Membrane used to contain and protect the graft

• Healing: 4–6 months before implant placement

Sinus Lift (Maxillary Sinus Augmentation)

When: Upper posterior teeth (molars/premolars) with insufficient bone height
Purpose: Creates vertical bone height below the sinus floor

• The sinus membrane is gently elevated

• Graft material placed in the space created

• Allows implant placement where bone was previously too shallow

• Lateral approach: 6 months healing; internal approach: can sometimes place implant simultaneously

Bone Graft Materials

Source Description Clinical Use

Autograft Patient’s own bone Gold standard — best incorporation

Allograft Processed human donor bone Most commonly used — excellent results

Xenograft Bovine (cow) or porcine (pig) bone Widely used, predictable

Alloplast Synthetic bone substitute Good option, no disease transmission risk

Dr. Kim and the surgical team will select the most appropriate material based on the size and location of the defect, your medical history, and treatment goals.

What to Expect — Bone Grafting Process

The Procedure

• Performed under local anesthesia — sedation available if needed

• Graft material placed and covered with a protective membrane

• Area sutured closed

• 30–90 minutes depending on extent of grafting

Recovery

• Swelling and mild discomfort for 3–5 days

• Soft diet for 2 weeks

• Antibiotics and pain medication prescribed as needed

• Suture removal at 1–2 weeks

• Avoid smoking — significantly impairs healing and graft success

Healing and Integration

• Graft material is gradually replaced by your own bone over 3–6 months

• Follow-up imaging confirms adequate bone volume before implant placement

Does Grafting Guarantee Implant Success?

Bone grafting significantly improves the conditions for implant placement and success. However, successful integration depends on multiple factors including overall health, smoking status, and oral hygiene. Dr. Kim will evaluate your specific situation honestly and set realistic expectations.

Can Grafting and Implant Placement Happen Together?

In some cases — particularly with socket preservation or smaller grafts — the implant can be placed at the same time as the graft (simultaneous placement). In other situations, a staged approach (graft first, implant after healing) is necessary. The surgical team will determine which approach is appropriate for your anatomy.