The Connective Tissue Graft: Harvesting Techniques, Indications, and CTG vs FGG

The connective tissue graft is one of those procedures that looks small until you understand what it controls.

A few millimeters of tissue can decide whether a root-coverage case blends or looks patched. It can decide whether an implant crown looks natural or gray. It can decide whether the patient can clean the area comfortably. And it can decide whether the surgeon spends the afternoon relaxed or negotiating with the greater palatine artery.

I like CTG because it is honest surgery. You cannot hide from anatomy. You cannot hide from flap thickness. You cannot hide from tension. The palate gives you what it gives you, and your job is to harvest enough tissue without being greedy.

Connective Tissue Graft Technique And Soft Tissue Grafting Around Implants

In practice, the question is not only "what is a CTG?" The useful decision is when a connective tissue graft technique adds thickness, when soft tissue grafting around implants improves the peri-implant envelope, when palatal harvesting is justified, and when an FGG is the better tool than a CTG.

For coverage of exposed roots, coronally advanced flap with subepithelial connective tissue graft remains one of the key reference approaches in the literature (Chambrone et al., 2022). For implant dentistry, the question shifts from coverage of exposed roots to phenotype: can we increase soft-tissue thickness, improve contour, and make the restoration easier to maintain? A recent review on phenotype modification around implants is a useful authority link for that discussion (Tavelli et al., 2022).

That is why I do not teach palatal harvesting as a trick. I teach it as anatomy plus indication plus wound management.

What A CTG Is Actually For

A CTG is autogenous connective tissue, most often harvested from the palate and placed under a flap or into a recipient pouch. The surface epithelium is not the objective. The objective is the connective tissue volume and biology underneath.

I use CTG for four main reasons:

1. Coverage support for exposed-root defects in recession defects with a realistic prognosis.
2. Soft-tissue thickening around teeth or implants.
3. Esthetic blending where a free gingival graft would be too visible.
4. Peri-implant phenotype management when thin tissue puts the reconstruction at higher esthetic or maintenance risk.

The evidence around recession treatment still supports the combination of coronally advanced flap and subepithelial connective tissue graft as a strong reference approach for single exposed-root defects Chambrone et al., 2022. Around implants, soft-tissue augmentation procedures can increase tissue thickness, and CTG remains an important benchmark Tavelli et al., 2022.

CTG vs FGG: Do Not Confuse The Jobs

A free gingival graft is not an inferior CTG. It is a different tool. If the patient needs keratinized tissue width in a non-esthetic posterior site, FGG may be the more honest option.

The Palate Is The Real Boss

The danger is not theoretical. The greater palatine artery travels anteriorly from the greater palatine foramen, and its position matters when you plan graft height and length. Anatomical studies of the palate are useful because they remind us that graft size is not only a surgical preference Kim et al., 2008.

In a practical sense:

• A high, thick palate gives more vertical room.
• A shallow palate brings the neurovascular bundle closer to the harvest zone.
• The first molar region and posterior palate require extra respect.
• A very thin palate is not a place to prove courage.

This is where the problem starts: clinicians often choose a technique first and inspect the donor anatomy second. I prefer the reverse.

Harvesting Techniques And When I Use Them

Trap-door or double-incision harvest

This can provide generous tissue volume and good visibility, especially when the palate is favorable. The price is more flap management at the donor site.

I consider it when I need volume and the vault gives me space.

Single-incision harvest

This is useful when I want a smaller access wound and primary donor closure. It can reduce donor-site morbidity, but it demands precision because you see less.

I consider it when the volume need is moderate and I want a cleaner closure.

De-epithelialized free gingival graft

This gives dense tissue and can be very useful, but the donor-site wound behaves differently. It is not automatically more elegant. It is simply another way to get the tissue.

Around Implants, CTG Is Not Decoration

Thin peri-implant tissue can make the gray shine through, expose restorative margins, increase recession risk, and make hygiene less comfortable. CTG can help thicken the envelope, especially in the esthetic zone or around immediate implants.

But here is the caveat: CTG does not fix a facially placed implant. It does not replace missing buccal bone. It does not make a bulky restoration cleansable.

Soft tissue and hard tissue are one plan, not two.

Important distinction: when the main problem is deficient buccal hard-tissue contour or lip support, I treat it as a GBR and prosthetic-contour diagnosis first. CTG can improve phenotype thickness, but it is not a substitute for rebuilding missing hard-tissue volume.

My Practical Selection Framework

What This Guide Does Not Solve

A CTG is not a universal patch. It will not make a recession defect with severe interproximal attachment loss behave like a simple Miller/Cairo favorable recession. It will not make poor plaque control disappear. It will not fix implant malposition.

The graft is powerful because it respects biology. It fails when we ask it to hide bad planning.

Go Deeper

For the bone-side of this problem, study the interactive Guided Bone Regeneration ebook. For immediate implant soft-tissue sequencing, use the Periospot immediate implant material and CTG case videos in the library.

The most useful habit is simple: decide the bone envelope and the soft-tissue envelope together before the first incision.

References

• Chambrone et al., 2022
• Tavelli et al., 2022
• Kim et al., 2008

Frequently Asked Questions

What is a connective tissue graft?

A connective tissue graft is autogenous soft tissue, usually harvested from the palate, used to increase tissue thickness, support coverage of exposed roots, or improve peri-implant soft-tissue stability.

Is CTG better than FGG?

Not universally. CTG usually blends better and adds thickness; FGG is often better when the main goal is keratinized tissue width.

Is the palate always safe for CTG harvesting?

No. The safe harvest zone depends on palatal vault shape, tissue thickness, and the position of the greater palatine artery. The donor site must be planned before the technique is chosen.

Can CTG fix implant esthetic problems?

It can improve tissue thickness and contour in selected cases, but it cannot rescue a poorly positioned implant or a missing bone envelope by itself.