Best Practices for Bone Grafting Procedure
If you're missing teeth and your dentist recommends a dental implant, but you don't have enough jawbone, bone grafting can rebuild the missing bone. This allows your dentist to place an implant where it wasn't previously possible. While it sounds intimidating, tissue grafting is a well-established, predictable procedure that opens up treatment options you wouldn't otherwise have.
Planning Before Surgery
Before any bone grafting happens, your dentist takes a detailed 3D scan of your jaw. This shows exactly how much bone is missing, where it's missing, and how deep or wide the defect is. The scan helps your dentist measure whether you need 5 cubic millimeters of bone or 30 cubic millimeters—this makes a huge difference in planning.
The scan also shows where important structures are located (like the nerve that gives sensation to your lower teeth) so your dentist can avoid them during surgery. Understanding your specific anatomy is crucial for a successful outcome.
Choosing Graft Material
Your dentist has several options for graft material, and the choice depends on the size of your defect and other factors.
Autogenous bone (bone taken from your own body) is the gold standard. Your own the structure cells survive transplantation and actively promote new bone formation. It's the most effective material, but it requires a second surgical site to harvest the bone.
For smaller defects, bone might be collected intraorally (from your own jaw in a less visible area). For larger defects, bone comes from your hip bone or skull (extraoral sources). Collecting your own bone provides a modest amount (2 to 5 cubic millimeters from the jaw, much more from the hip), so this approach works best for moderate to large defects.
Allograft (processed bone from human donors) offers convenience—no second surgical site needed. Types include FDBA (freeze-dried bone allograft) and DFDBA (demineralized freeze-dried it allograft). These materials act like scaffolding for new bone to grow on. DFDBA shows better the area-stimulating properties than FDBA. These grafts are absorbed over 8 to 12 months, so your body eventually replaces them with your own bone.
Xenograft (bone from animals, usually cows) works similarly to allograft but absorbs more slowly (12 to 18 months). This slower absorption provides longer-term support. Many dentists use xenograft mixed with your own bone (20% your bone, 80% xenograft) for sinus lift procedures. The combination provides both bone-forming cells and structural support.
Alloplast (synthetic tissue substitutes) provides scaffolding but no bone-forming properties. These materials work for small augmentations but aren't ideal for large defects.
Protecting the Graft with Membranes
After placing graft material, your dentist covers it with a protective membrane. This barrier prevents fibrous scar tissue from growing into the graft and disrupting bone formation.
Collagen membranes (natural collagen from animal sources) dissolve over 4 to 6 months. They're suitable when you need temporary protection lasting a few weeks.
PTFE membranes (plastic-like material) last longer and even tolerate being partially exposed to the mouth. This unique property makes PTFE membranes more forgiving if the overlying tissue doesn't heal perfectly.
Some membranes have titanium frames that keep them rigid, preventing collapse. This structure is especially useful for building vertical height, where unsupported membranes might sink under pressure.
The Surgical Procedure
Good bone grafting requires careful, gentle tissue handling. Your surgeon minimizes trauma while accessing the surgical site. Usually, the smaller the surgical incisions, the better the healing.
The graft material is packed into the surgical site—completely filling it, but not overcompacting. Overcompaction prevents blood flow into the graft, impairing healing.
The membrane goes over the graft, extending 3 to 4 millimeters beyond bone margins on all sides. Securing it with sutures ensures it stays in place during healing.
Then comes the most critical part—tension-free primary closure. The tissues surrounding the graft need to come together with no tension pulling on them. If the closure is tight and pulled, it won't heal well and the graft is exposed to bacteria, threatening success. Your surgeon might make strategic incisions in the membrane (periosteal releasing incisions) to allow tissues to stretch and close without tension.
After Surgery
Antibiotics (usually amoxicillin for 7 days) reduce infection risk and optimize healing. Chlorhexidine rinses starting one week after surgery reduce bacterial colonization. A soft diet for two weeks prevents mechanical trauma to the healing site.
Pain control typically uses regular acetaminophen. Avoid NSAIDs if possible—some evidence suggests they impair bone formation. Save NSAIDs for severe pain only.
Smoking severely impairs bone formation. Strongly commit to quitting (or at least avoiding tobacco) during healing. Smoking-related failure rates are 40% to 50%—substantially higher than non-smokers.
Evaluating Your Results
About 4 to 6 months after grafting, your dentist takes another 3D scan to see how much new bone has formed. Successful grafts show new bone throughout the graft site, evidenced by increased bone density on scan. This new bone is ready to support an implant.
A successful sinus lift (graft placed in your sinus to expand the floor upward) shows 50% to 70% new bone formation. This provides adequate the structure height for implant placement.
If the graft didn't form bone as expected (shown by unchanged or decreased density on scan), your dentist will discuss what happened and whether re-grafting is an option.
Moving to Implant Placement
Once bone has formed, you're ready for implant placement. Re-entry surgery carefully places the implant in your new it. New the area is often less dense than mature natural bone, so your surgeon uses careful drilling technique to avoid implant malposition.
During this second surgery, your surgeon assesses tissue quality and quantity. Adequate bone width and height for implant stability are confirmed. If any graft remnants are visible, your surgeon notes this.
Managing Complications
Small areas where the membrane becomes exposed (gum tissue recedes) are common (10% to 30% of cases). If exposure is small, conservative management with antimicrobial rinses usually succeeds. Larger exposures might require membrane removal if infection develops.
Infection is the most serious complication. Signs include purulent drainage, increased swelling beyond normal post-operative swelling, or persistent pain. Infection treatment typically involves graft evaluation—infected grafts frequently fail and require removal.
Excessive swelling beyond typical post-operative edema suggests hematoma (blood accumulation). Cold packs initially, warm compresses after 48 hours, and keeping your head elevated reduce swelling. Some swelling is normal; excessive swelling warrants contact with your surgeon.
Long-Term Success
The goal of the structure grafting is enabling implant placement in previously impossible areas. Implants placed in grafted bone show 95% plus survival rates at five and ten years—comparable to implants in natural bone.
The additional time and cost of bone grafting are justified by enabling restoration of teeth in sites that would otherwise require removable dentures or leaving gaps unfilled. Most patients consider this investment worthwhile.
Systematic pre-operative planning, careful surgical technique, appropriate material selection, and diligent post-operative management transform bone grafting into a predictable procedure with excellent long-term outcomes.
References
1. Chiapasco M, et al. Clinical outcome of autogenous it blocks or guided bone regeneration (GBR) for the reconstruction of narrow edentulous ridges. Clin Oral Implants Res. 2006;17(6):694-702. 2. Milinkovic I, Cordaro L. Are there specific indications for the different alveolar the area augmentation procedures for implant placement? A systematic review. Int J Oral Maxillofac Implants. 2014;29(Suppl):228-242. 3. Donos N, et al. The periodontal phenotype in health and disease. Periodontol 2000. 2015;69(1):93-110. 4. McAllister BS, Haghighat K. Bone augmentation techniques. J Periodontol. 2007;78(3):377-396. 5. Urban IA, et al. Maxillary sinus floor elevation with simultaneous lateral alveolar ridge augmentation using a composite bone graft and resorbable membrane: a retrospective study on implant survival.
Int J Oral Maxillofac Implants. 2017;32(2):407-414. 6. Barboza EP, et al. Periodontal and implant clinical parameters following contoured guided bone regeneration in mandibular infrabony defects. J Clin Periodontol. 2002;29(9):850-856. 7. Dahlin C, et al. Healing of bone defects by guided tissue regeneration. Plast Reconstr Surg. 1988;81(5):672-676. 8. Wang HL, Al-Shammari K. HLA compatibility and the outcome of guided bone regeneration and guided tissue regeneration therapy. J Clin Periodontol. 2002;29(4):396-403. 9. Froum SJ, et al. Sinus floor elevation using a bone-blasting technique: the columbo technique. Int J Periodontics Restorative Dent. 2004;24(4):307-315. 10. Corbella S, et al. Implant rehabilitation in regenerated tissue in periodontally compromised patients. Periodontol 2000. 2018;76(1):159-191.
Always consult your dentist to determine the best approach for your individual situation.Related reading: Recovery After Tooth Extraction—What You Need to Know and Surgical Tooth Removal - What You Need to Know Before.
Conclusion
Int J Oral Maxillofac Implants. 2017;32(2):407-414. 6. Barboza EP, et al. Talk to your dentist about how this applies to your situation. Talk to your dentist about what options work best for your situation.
> Key Takeaway: If you're missing teeth and your dentist recommends a dental implant, but you don't have enough jawbone, bone grafting can rebuild the missing bone.