Free mucosal grafts (FMG) or connective tissue grafts (CTG) are suitable for the closure of small to moderate size defects in the premolar area as well as small to medium size-persistent defects. In contrast to the techniques described so far, the harvested grafts are not directly vascularized. The flap initially receives its nutrients within the first three postoperative days by diffusion alone, so-called plasmatic circulation. After day 3, the nutrition is provided by the ingress of blood capillaries from the recipient bed for revascularization. However, the size of the defect and the thickness of the graft play a crucial role in plasma circulation and nutrition of the transplanted cells. The main donor site for FMG/CTG is the palate, the maxillary tuberosity or edentulous alveolar ridges. Struder demonstrated that the thickest part of the palate and the most favorable donor site is in the premolar area [33]. The thickness of the mucosa decreases distally and becomes thicker once more in the area of the tuberosity. However, the inadequate area is small compared to the premolar area. To perform a FMG, the wound margins of the recipient bed are de-epithelialized according to the techniques already described and the defect to be closed is measured. Using a template, the size of the defect can be projected onto the palatal premolar area and the graft can be harvested. Within 3–4 weeks, the palatally exposed site heals completely above the free granulation. The donor site of the subepithelial connective tissue graft extends from the canine region to nearly the palatal root of the first molar. Free mucosal grafts (FMG) are suitable for closing the OAF to the maxillary second premolar region. Laterally, a distance of 2 mm from the gingival margin should be considered the minimum and a minimum 2-mm zone of the marginal gingiva should be maintained at the donor site. Medially, the boundary is the vascular-nerve bundles, which, depending on the anatomy of the palate, are 7, 12, or 17 mm away from the palatal cemento-enamel junction. After the incision, the subepithelial connective tissue is dissected and harvested according to the size of the defect. The harvested grafts (FMG/CTG) are then placed on the defect and adapted by sutures on the de-epithelialized wound margins. The pedunculated subepithelial connective tissue graft is particularly well suited for covering defects in the molar region. Similar to a non-pedunculated graft, this technique also uses a variety of incision techniques. In our polyclinic, we prefer to use the “trap door” technique favored by Wachtel [34]. According to Wachtel’s technique, an incision is performed at a distance of 2 mm from the gingival margin and extends, according to the extent of the defect, to the canine region. Subsequently, the scalpel is then angled off; a mucosal flap is prepared about 1.0–1.5 mm medially and a step approximately 1.5 mm is made. The subepithelial graft is then prepared mesially, medially, laterally, and basally. An undermining “bridge” between the alveolus or defect and the incision is prepared in the mucosa, and the graft is then placed under the bridge in the defect and fixed at the wound margins with sutures. As with the pedunculated palatal rotation flap, the blood supply to the graft is provided through the greater palatine artery, the anastomosis of the nasopalatine artery and sphenopalatine artery. In addition to the preservation of the vestibule and the associated favorable prosthetic options, the pedunculated subepithelial connective tissue graft is applicable to the majority of possible defects. Considering the blood supply by the greater palatine artery, clinicians and patients can expect a high probability of graft success. Due to its high elasticity, the graft can be effortlessly adapted free of tension [8]. With the use of this technique and the application of a step according to Wachtel, the wound margins can be optimally adapted and wound healing can be ensured by primary intention. Furthermore, there is no free exposed area so postoperative complaints are low [35]. The disadvantages of this technique include the long duration, high costs, and the ability of the surgeon [35].