Dental Implants in Citrus Heights: What a 2025 Review Found About Preserving Bone After Tooth Extraction

When a tooth comes out, the jawbone underneath does not simply stay put. It shrinks — sometimes fast — and that shrinkage can make a future implant harder, or even impossible without extra grafting. A 2025 research review asked whether filling the empty socket with a bone graft material called xenograft can slow that loss and keep the door open for dental implants in Citrus Heights patients. The evidence says yes, with some honest limits.

Why Bone Disappears After an Extraction

After a tooth is removed, the socket fills with a blood clot, then granulation tissue, then new bone — but the ridge that once held the tooth also resorbs. Earlier research cited in the review found ridge width shrinking by about 3.87 mm and height by about 1.67 mm within three months of extraction, with much of that loss continuing to six months. The outer (cheek-side) wall of bone is usually hit hardest, which can shift the center of the ridge inward.

That matters because an implant needs enough bone width and height to sit securely and look natural. Lose too much, and you may need a larger graft later or a different solution entirely. Ridge preservation protects the bone at the moment of extraction, when intervention is simplest.

What Ridge Preservation Involves

Ridge preservation, also called socket preservation, means placing a graft material into the socket right after extraction, usually covered with a barrier membrane, and letting it heal for several months. The graft acts as a scaffold: it holds the space while your own bone grows in around it.

Xenograft is one common graft family. It is bone mineral from another species — most often deproteinized bovine (cow) bone — that has been sterilized and processed so only the mineral scaffold remains. Its advantages are practical: no second surgical site, a plentiful supply, and predictable handling. It is osteoconductive, meaning it guides new bone growth, though it does not itself grow bone.

What the Researchers Did

The review, by Sah and colleagues and published in Cureus in 2025, followed standard systematic-review methods and was registered in advance. The team searched major medical databases for randomized controlled trials of xenograft ridge preservation before implant placement, requiring at least six months of follow-up and outcomes reported for ridge width, ridge height, gum measurements, and complications.

Five randomized trials met the rules for the qualitative review, and two of them could be combined in a meta-analysis. In total, the included studies covered 200 extraction sockets: 100 filled with xenograft and 100 left to heal on their own. Follow-up ranged from one month to 36 months. The studies came from Italy, Malaysia, and Germany, and their risk of bias was rated low to moderate.

What They Found: Width Preserved, Height Partly Protected

The pooled results favored preservation. Horizontal ridge width was better preserved in xenograft sockets than in sockets left to heal alone (standardized mean difference 1.15, statistically significant). Vertical height told a more mixed story: mid-cheek height decreased more in the extraction-alone group (−1.89), while height at the neighboring-tooth sides showed little difference.

Bleeding on probing, a gum-inflammation measure, was roughly similar in both groups. The authors concluded that an extraction socket filled with xenograft showed better preservation of bone dimension and better soft- and hard-tissue healing, with satisfactory results overall — and that xenograft was clinically and statistically superior to leaving the socket empty.

For a patient, the plain-language version is: grafting the socket does not stop all bone loss, but it meaningfully reduces it, especially in width — the dimension implants need most. That can mean a simpler implant procedure later.

Who Benefits Most — and Who Might Not Need It

Ridge preservation makes the most sense when an implant is likely in your future but cannot be placed immediately — because of infection, healing time, or finances. It also matters most in visible areas, where shrinkage would harm appearance, and in sites where the cheek-side bone wall is thin.

It is not automatic for every extraction. If an implant can be placed the same day, if the tooth will be replaced with a bridge, or if you are certain you do not want an implant, preserving the ridge may add cost and healing time for little benefit. Your dentist should also weigh medical factors, smoking, and gum disease, all of which affect healing. A prosthodontist in Roseville can look at your scan and your plans together and advise whether preservation is worth it for your specific socket — and whether bone grafting for dental implants is part of your path at all.

The Limits of This Evidence

Five trials and 200 sockets is a modest base, and only two trials fed the meta-analysis, so the pooled numbers should be read as encouraging rather than definitive. The authors called for larger, longer studies, and results varied by graft product and measurement method, so your individual result will vary.

One honest note: graft particles can remain in the socket for a long time while your own bone grows around them. That is part of how xenograft holds volume, and it is why follow-up imaging matters when the implant is eventually placed.

Visit Expert Dental Group

Expert Dental Group is located at 5070 Foothills Blvd, Suite 2, Roseville, CA 95747. Call (916) 888-1646 to schedule a consultation. Hours: Monday–Friday 9–6, Saturday 9–1. Dr. Leila Nikpour is a prosthodontist with more than 15 years of dentistry experience, and the practice has placed 2,500+ dental implants.

Frequently Asked Questions

Does bone really shrink after a tooth is pulled?

Yes. Earlier research cited in this review found ridge width shrinking by about 3.87 mm and height by about 1.67 mm within three months, with loss continuing to six months. The cheek-side wall is usually affected most.

What is xenograft bone material?

It is sterilized, processed bone mineral, most often from bovine sources, used as a scaffold that holds the socket’s shape while your own bone grows in. No donor site on your body is needed.

Will ridge preservation guarantee I can get an implant later?

No — it improves the odds and can simplify the later procedure, but it does not guarantee enough bone, and healing, gum health, and medical factors still matter. Imaging before implant placement confirms what is possible.

How long do I wait after ridge preservation before an implant?

Healing typically takes several months; the studies in this review followed patients from one month to 36 months. Your dentist will confirm readiness with an exam and imaging, including in-house 3D CBCT imaging.

Is ridge preservation painful?

The extraction itself is done with local anesthesia, and the graft is placed during the same visit, so there is no separate surgery. Soreness afterward is similar to extraction recovery and is managed with standard aftercare instructions.

References

Sah N, Sarode PP, Warang A, Tarase T, Gavhale P, Mirgane M. Alveolar ridge preservation using xenograft following tooth extraction: a systematic review and meta-analysis. Cureus. 2025;17(4):e81815. DOI: https://doi.org/10.7759/cureus.81815. PubMed: https://pubmed.ncbi.nlm.nih.gov/40337577/.