Influence of the suturing technique on the wound healing of the palate after obtaining a connective tissue graft

INTERVENTION: Using a computerized randomisation method, participants are allocated to one of two groups. Group 1: Participants receive a continuous interlocking suture used in the donor site Group 2: Participants receive a criss‐cross suture used in the donor site. The envelope indicating the group to which the patient belongs was opened at the time of the suture. Before the surgery measurement of the palate was taken with and endodontic file and flowable light curing composite. After the obtention of a standardized connective tissue graft (12mm x 8mm x 1,5mm) using the single incision technique, measurement of the residual flap thickness was taken with the same method explained before. After one week, healing of the donor site is evaluated and pain perception recorded daily until 8 weeks after the intervention. CONDITION: Palatal healing ; Ear, Nose and Throat ; Palatal healing PRIMARY OUTCOME: Association between suture technique and early healing index is measured one week after surgery and after suture removal, the early‐wound healing index (EHI) using five different degrees:; 1. Complete flap closure without fibrin line at the palate; 2. Complete flap closure with fibrin line at the palate; 3. Complete flap closure with small fibrin clot(s) at the palate; 4. Incomplete flap closure with partial necrosis of the palatal tissue; 5. Incomplete flap closure with complete necrosis of the palatal tissue (more than 50 % of the former flap is involved); SECONDARY OUTCOME: 1. Association between preoperative palatal thickness and early healing is measured one week after surgery using a early‐wound healing index (EHI) (Fickl et al. 2014) and the preoperative measurement taken with the endodontic file and light curing flowable composite; 2. Association between postoperative palatal flap thickness and early healing is measured one week after surgery using a early‐wound healing index (EHI) (Fickl et al. 2014) and the postoperative measurement taken with the endodontic file and light curing flowable composite; 3. Pain Perception of the patients was determined with VAS pain values daily until 8 weeks after surgery; INCLUSION CRITERIA: 1. Men and women over 18 years old 2. Showing Miller Class I,II or III (Miller 1985) single gingival recession