Connective tissue grafting (CTG) remains one of the most predictable and widely used procedures in periodontal plastic surgery. It is commonly performed to treat gingival recession, improve soft tissue thickness, stabilize marginal tissue around teeth or implants, and enhance esthetic outcomes in visible areas of the mouth. In many clinical scenarios, CTG is considered the reference standard soft tissue augmentation procedure because it consistently produces high levels of root coverage, durable tissue thickness, and favorable long-term stability. For these reasons, CTG has become a cornerstone technique in mucogingival surgery and peri-implant soft tissue management.
While the overall concept of CTG is consistent—harvesting autogenous connective tissue and placing it beneath a flap or tunnel—the surgical philosophy and technique vary significantly between different clinical traditions. Much of the early development of CTG procedures came from North American periodontal surgery, while more recent refinements have been heavily influenced by the Italian periodontal plastic surgery group led by Zucchelli and collaborators. These different schools of thought share the same biologic goals but differ in graft preparation, flap design, and surgical execution.
Understanding Gingival Recession
Gingival recession refers to the apical displacement of the gingival margin relative to the cementoenamel junction, resulting in root exposure. This condition may develop for several reasons including traumatic toothbrushing, periodontal disease, orthodontic movement outside the alveolar envelope, thin periodontal phenotype, inflammation, or anatomical factors such as a prominent root or thin buccal bone. Recession can lead to esthetic concerns, root sensitivity, root caries risk, and challenges with plaque control depending on the severity and location of the defect. The classification of recession defects is important because it helps determine the likelihood of complete root coverage. Modern classifications build on earlier systems such as the Miller classification and more recent approaches that evaluate the relationship between interproximal attachment and recession depth. These systems allow clinicians to estimate prognosis and choose the most appropriate surgical approach for each defect.The Purpose of Connective Tissue Grafting
The primary goals of CTG are to increase tissue thickness, cover exposed root surfaces, improve gingival phenotype, and stabilize the soft tissue margin over time. Unlike free gingival grafts, which primarily increase keratinized tissue width, CTG is typically performed beneath a flap or tunnel. This allows the overlying epithelium to remain intact, resulting in better color blending and more natural soft tissue integration. Connective tissue grafts are frequently used for single or multiple recession defects, thin periodontal phenotype, and peri-implant soft tissue enhancement. The procedure can also improve the stability of gingival margins around restorations or implants by increasing the volume and quality of the soft tissue envelope. This ability to modify tissue phenotype is one of the main reasons CTG has remained the gold standard in periodontal plastic surgery.American Connective Tissue Graft Techniques
Many classic CTG techniques originated in North American periodontal surgery. These approaches typically involve harvesting subepithelial connective tissue from the palate using techniques such as the trap-door method, single-incision technique, or envelope approach. After harvesting, the connective tissue graft is placed beneath a coronally advanced flap or within a pouch at the recession site. These techniques have been extensively studied and have demonstrated excellent outcomes in terms of root coverage and tissue thickness. Subepithelial connective tissue grafting combined with a coronally advanced flap has repeatedly shown some of the highest rates of complete root coverage reported in the periodontal literature. The main disadvantages of traditional CTG techniques are donor site morbidity and surgical complexity, as the procedure requires both a recipient and a palatal surgical site.The Italian Approach: De-Epithelialized Free Gingival Grafts
More recent work from the Italian periodontal plastic surgery group has refined the CTG concept by using a de-epithelialized free gingival graft. In this approach, an epithelialized graft is harvested from the palate similarly to a traditional free gingival graft, but the epithelial layer is removed before the graft is placed beneath the flap. The resulting graft functions similarly to a connective tissue graft but can provide greater graft volume and easier harvesting in some clinical situations. Zucchelli and collaborators have described this method as a reliable alternative to classic CTG harvesting techniques. The graft is typically used in combination with advanced flap designs or tunneling approaches that allow treatment of multiple adjacent recession defects with excellent esthetic outcomes. One of the advantages of the Italian techniques is their emphasis on flap management, papilla preservation, and tension-free coronal advancement to maximize vascular supply and root coverage predictability. These techniques have become widely adopted in modern periodontal plastic surgery because they allow treatment of multiple adjacent recessions with excellent color blending and soft tissue contour. They also highlight an important concept emphasized by Zucchelli: successful root coverage surgery depends as much on flap design and tissue management as it does on graft selection.Expected Outcomes of CTG Procedures
Connective tissue graft procedures consistently produce high rates of root coverage and long-term tissue stability. Systematic reviews have shown that CTG combined with coronally advanced flaps provides some of the most predictable outcomes in periodontal plastic surgery, often achieving high percentages of complete root coverage in appropriate recession defects. In addition to root coverage, CTG significantly increases gingival thickness and improves tissue phenotype. This increase in soft tissue thickness is associated with improved marginal stability and a lower risk of future recession. Around implants, CTG is commonly used to increase buccal soft tissue volume and improve the esthetic transition between the restoration and surrounding tissue. Another important outcome is esthetic integration. Because CTG is placed beneath existing tissue, the overlying epithelium maintains a more natural color and texture compared with epithelialized grafts. This is particularly important in the anterior esthetic zone, where subtle differences in tissue color or contour can affect the final appearance.Potential Complications
Donor Site Morbidity
One of the most common complications associated with CTG is discomfort or bleeding at the palatal donor site. Because the procedure requires harvesting tissue from the palate, postoperative pain, swelling, or delayed healing can occur. Careful harvesting techniques and protective stents can help minimize these issues.Incomplete Root Coverage
Not all recession defects can achieve complete root coverage. The prognosis depends heavily on the classification of the defect, the presence of interproximal attachment loss, and the thickness of the surrounding tissue. Proper diagnosis and classification are essential to setting realistic treatment expectations.Graft Necrosis or Failure
In rare cases, graft survival may be compromised if the graft does not receive adequate blood supply. This risk can increase when flaps are under tension or when graft stabilization is inadequate. Modern tunneling and flap management techniques have helped reduce this complication by improving vascular support for the graft.Esthetic Concerns
Although CTG generally provides excellent esthetic outcomes, minor contour irregularities or tissue thickness differences can occur. These issues are usually minimized through careful flap design, graft shaping, and precise surgical technique.Clinical Takeaway
Connective tissue grafting remains one of the most powerful tools in periodontal plastic surgery. Whether performed using traditional American harvesting techniques or newer approaches such as the Italian de-epithelialized graft concept, CTG consistently produces reliable root coverage, improved tissue thickness, and stable esthetic outcomes. The key to success lies in proper diagnosis, correct defect classification, careful graft handling, and tension-free flap management. When these principles are followed, CTG can dramatically improve both the health and appearance of soft tissue around teeth and implants.Want to See CTG Surgery Step by Step?
Understanding the literature behind connective tissue grafting is essential, but seeing the surgical workflow in real clinical cases brings these techniques to life. Watch our Medavue Learning surgical videos to see connective tissue graft techniques demonstrated step by step.References
- Zucchelli G, Tavelli L, McGuire MK, et al. Autogenous soft tissue grafting for periodontal and peri-implant plastic surgical reconstruction. J Periodontol. 2020;91(1):9-16.
- Zucchelli G, Mounssif I. Periodontal plastic surgery. Periodontol 2000. 2015;68(1):333-368.
- Cairo F, Nieri M, Pagliaro U. Efficacy of periodontal plastic surgery procedures in the treatment of localized gingival recessions. J Clin Periodontol. 2014;41(suppl 15):S44-S62.
- Tavelli L, Barootchi S, Greenwell H, et al. Gingival phenotype modification therapies on natural teeth: a systematic review. J Periodontol. 2020;91(1):46-61.
- Stefanini M, Zucchelli G. Coronally advanced flap with connective tissue graft for root coverage: surgical techniques and outcomes. Periodontol 2000. 2018;77(1):98-110.
- Chambrone L, Tatakis DN. Periodontal soft tissue root coverage procedures: a systematic review. J Periodontol. 2015;86(8):S8-S51.
- McGuire MK, Scheyer ET. Root coverage using connective tissue grafts: long-term outcomes. J Periodontol. 2010;81(8):1108-1117.
- Zucchelli G, Tavelli L, Stefanini M, et al. Coronally advanced flap with connective tissue graft for treatment of multiple recession defects. J Periodontol. 2014;85(8):1020-1028.
