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The introduction of a new collagen substitute, which will potentially reduce the invasiveness of techniques by avoiding the need for a second surgical site (ie, the donor site), needs to be evaluated in relation to the surgical procedure that could benefit the most by utilizing such a matrix. This study compared the clinical outcomes following treatment of RT1 multiple adjacent gingival recessions (MAGRs) using the modified coronally advanced tunnel (MCAT) technique or the multiple coronally advanced flap (MCAF) in conjunction with a new volume-stable xenogeneic collagen matrix (VXCM). Secondarily, the study evaluated whether patients report a preference between the two surgical techniques in terms of discomfort. A total of 20 patients requiring treatment of MAGRs were randomly assigned to one of the two treatment groups: MCAF+VCMX (Group A) or MCAT+VCMX (Group B). The following measurements were recorded at baseline (before surgery) and at 6 and 12 months: gingival recession depth (REC), probing pocket depth (PD), keratinized tissue width (KTW), and gingival thickness (GT). Postoperative pain and discomfort were recorded using a visual analog scale (VAS) at 1 week. The primary outcome variable was mean root coverage (mRC), and secondary outcomes were complete root coverage (CRC), changes in KTW and GT, patient discomfort and satisfaction, and duration of surgery. Healing was uneventful in both groups. At 12 months, both treatments resulted in statistically significant improvements in REC and GT compared to baseline (P < .05). The mRC was 79.95% ± 29.92% in the MCAF group and 64.74% ± 40.5% in the MCAT group (P = .124). CRC was seen in 65.6% of MCAF-treated sites and 52% of MCAT-treated sites (P = .181). Similar clinical results should be expected when MAGRs are treated with MCAF or MCAT, with the adjunct of VCMX. [ABSTRACT FROM AUTHOR]

Multiple adjacent gingival recessions (MAGRs) are commonly treated with autogenous grafts. However, several intra- and postsurgical complications have been described following autogenous grafts, leading clinicians to explore the use of different biomaterials to treat these conditions. The aim of the present study was to evaluate the root coverage outcomes of a novel porcine-derived acellular dermal matrix (PADM) in combination with the tunneled coronally advanced flap (TCAF) for the treatment of MAGRs. Ten patients with 33 type 1 recession defects (RT1s) were treated with PADM + TCAF. The outcomes of interest included the mean root coverage (mRC), the frequency of complete root coverage (CRC), changes in keratinized tissue width, volumetric gain at the treated sites (assessed with digital intraoral scanning), and patient-reported outcome measures. All treated sites healed uneventfully, and no complications were noted throughout the study. At 6 months, a statistically significant reduction in recession was noted at the treated sites, exhibiting an overall mRC of 89.14% ± 19.15% and a CRC of 72.7%. The average volume gain after 6 months was 26.28 ± 11.71 mm3, and the mean distance between the surface/mean thickness of the reconstructed volume (DD) was 0.63 ± 0.28 mm. The region-specific volumetric analysis revealed an overall higher linear dimensional gain at the midroot aspect (range: 0.72 to 0.78 mm, assessed 1 to 4 mm apical to the cementoenamel junction) compared to the other regions. The present study presents the clinical and volumetric outcomes of PADM + TCAF for the treatment of MAGRs. A significant amount of volumetric gain was also observed at 6 months as a result of the treatment, along with satisfactory esthetic and patient-reported outcomes. [ABSTRACT FROM AUTHOR]

The aim of this report is to describe a new sling suturing method with papillary anchorage that is clinically applicable within the available conventional root-coverage tunneling procedures. Although caution is advised to not increase excessive tension on the fragile papilla tips, as they provide coronal and palatal suspension, the tension used with this method ascertains a firm and stable connection for the entire buccogingival graft complex into the horizontal and vertical dimensions of both single and multiple recession defects. This technical note describes the "trapezoidal sling suture" technique, which allows fixation and stabilization for the graft and flap around both natural teeth and implants. [ABSTRACT FROM AUTHOR]

Gingival recession treatment is one of the major clinical challenges in periodontics, and various surgical techniques have been proposed to correct it. Most of these techniques are suitable for isolated recession sites and involve harvesting an autogenous tissue graft, which increases patient morbidity and might result in inferior esthetics due to incision design. This study assessed the benefit of adding platelet-rich fibrin (PRF) to the vestibular incision subperiosteal tunneling approach (VISTA) in treating multiple gingival recession compared to using VISTA alone. A total of 41 teeth with Miller Class I and II defects were randomized in a split-mouth design. Multiple clinical parameters were tested, including the change in gingival thickness over time, keratinized tissue width, and gingival phenotype (using the transparency of a periodontal probe). Patient-centered outcomes were also assessed via visual analog scale. Multiple Miller Class I and II recessions in the maxilla can be effectively treated with VISTA. However, when used in conjunction with PRF, no significant differences were detected in any parameter. VISTA has been shown to be associated with a low level of postsurgical pain for patients and can be used for patients with high esthetic demands. [ABSTRACT FROM AUTHOR]

Objective: Currently, there is no established treatment protocol to treat interdental papillary loss. This research aimed to evaluate the outcomes of interdental papillary reconstruction using minimally invasive surgery, with injectable hyaluronic acid gel. Method and materials: Seventeen patients were included, each with five sites of class 1 papillary recession (40 sites in the maxilla and 45 sites in the mandible). Subperiosteal tunneling was performed through a horizontal incision made apical to the base of the papilla without penetrating it. The free gingival sulcus was sealed by 000 retraction cord. A total of 0.2 to 0.6 mL hyaluronic acid was injected gradually. The incision was sutured with poly-glycolic sutures. Treated sites underwent clinical and digital evaluation at three follow-up time points (1 month, 3 months, and 6 months). Results: The interdental papillary defect height in the maxillary sites significantly reduced by 60%, 66%, and 42% at 1,3, and 6 months, respectively. In mandibular sites, the reduction was 54%, 55%, and 40% at the same follow-up time points. Regarding interdental papillary defect surface area in the maxilla, the reduction was 65%, 71%, and 45% at 1, 3, and 6 months. In the mandible, a reduction of 60%, 64%, and 48% was noticed at the same time points. Regarding patients' pain level score, during the day of surgery, 16 patients reported pain; the average pain score out of 10 was 3.94, and 11 patients (64.7%) needed to take analgesics. The pain generally subsided in the following days. At the day of treatment, 12 out of the 17 patients (70.6%) reported mild difficulty in speaking and eating. No complication, hypersensitivity, or allergy was noted in any patient. Conclusion: Subperiosteal tunneling with hyaluronic acid injection demonstrates clinical improvements in papilla height and papillary recession surface area reduction after 3 months of follow-up, with reduction in improvement after 6 months. Clinical significance: Adjunctive use of hyaluronic acid injection with minimally invasive surgery in interdental papillary management may improve clinical and esthetic outcomes. [ABSTRACT FROM AUTHOR]

The anterior mandible is the most challenging anatomical site for performing periodontal plastic surgeries. Increased demands for optimal root coverage and esthetic outcomes contribute to the development of pedicle flap-based surgical solutions, in contrast to the predominantly used free gingival graft. The aims of this study were to (1) summarize the current literature to identify the most-used techniques, indications, and their efficacy, and (2) provide a decision table for surgeons to navigate through the selection of appropriate techniques. Four main approaches were identified: free gingival graft, lateral sliding, tunneling, and coronally advanced flap. The flap approaches are mostly combined with a connective tissue graft. The decision table considers the patient's chief complaint, local anatomical factors, and technique sensitivity. The table provides a framework for supporting an evidence-based selection of surgical techniques and for studying novel methods to achieve predictable root coverage in the anterior mandible. [ABSTRACT FROM AUTHOR]

The aim of this study was to present a periodontal plastic surgery approach to treat gingival recessions (GRs) and correct mandibular incisor mucogingival conditions and deformities. Isolated deep GRs (≥ 3 mm) in the mandibular incisors (n = 24 teeth) were treated: 66.6% of sites were recession types 2 or 3, and 58.3% of teeth were malpositioned. Recessions were treated using free mucogingival grafts (FMGs) harvested from the buccal aspect of donor teeth with altered passive eruption or healthy periodontal support, with < 3 mm between the cementoenamel junction and the buccal alveolar crest. Clinical parameters (GR, clinical attachment level, interproximal papilla tip location, keratinized tissue, vestibule depth) and root coverage esthetic score were evaluated at 9 months. FMG significantly reduced GR (P < .001) and increased keratinized tissue (P < .001) without loss of vestibule depth (P > .05). Mean root coverage was 94.37% ± 10.60%, mean residual GR was 0.08 ± 0.65 mm, and the mean root coverage esthetic score was 8.9 ± 1.24. Recession types 2/3 showed significant interproximal clinical attachment gain (P < .05). The interproximal papilla was significantly augmented at sites with papilla loss (P < .001). No clinical attachment loss (P = .346) was detected at donor sites. These results suggest that FMG is a promising root coverage approach for recession types 1, 2, and 3, correcting mucogingival conditions and deformities and reconstructing the interproximal papilla. [ABSTRACT FROM AUTHOR]

Purpose: To evaluate the soft tissue response to the placement of additively manufactured subperiosteal jaw implants (AMSJI) in the severely atrophic maxilla and to identify possible risk factors for soft tissue breakdown. Materials and Methods: An international multicenter study was conducted, and 15 men (mean age: 64.62 years; SD: ± 6.75) and 25 women (mean age: 65.24 years; SD: ± 6.77) with advanced maxillary jaw resorption (Cawood and Howell Class V or more) were included in this study. General patient data were collected, and all subjects were clinically examined. Inclusion criteria were patients who underwent bilateral AMSJI placement in the maxilla at least 1 year prior. Exclusion criteria were patients who did not have patient, surgeon, or dentist consent to participate in the study before their inclusion. Results: A total of 40 patients were enrolled, with a mean follow-up period of 917 days (SD: ± 306.89 days). Primary implant stability was achieved postoperatively in all cases, and all implants were loaded with a final prosthesis. At the time of the study, only 1 patient showed mobility (> 1 mm) of the bilateral AMSJI. Due to mucosal recession, exposure of the framework was seen in 26 patients (65%) and was mainly in the left (21.43% of 26) and right (18.57% of 26) midlateral region. A thin biotype and the presence of mucositis were found to be risk factors (P < .05). Although not significant, smokers had a risk of developing a recession that was nearly seven times (odds ratio: 6.88; P = .08) greater than that of nonsmokers. Conclusions: Twenty-six (65%) patients presented with a recession in one (or more) of the seven regions after oral rehabilitation with bilateral AMSJI placement. Several risk drivers were evaluated. The collapse of soft tissues around the AMSJI that led to caudal exposure of the arms was correlated with a thin biotype and the presence of mucositis. [ABSTRACT FROM AUTHOR]

Surgical treatment of infrabony defects may result in gingival recession of the neighboring teeth. The aim of this clinical report is to describe a surgical technique to promote gingival margin stability in the treatment of infrabony defects at sites with a thin or medium gingival phenotype. A coronally advanced entire papilla preservation (CA-EPP) flap with a connective tissue graft (CTG) was executed in two different clinical cases. This technique substantially improved interproximal clinical attachment level and pocket closure, with no gingival recession. A CA-EPP flap using a CTG may promote gingival margin stability and can be recommended in regenerative periodontal procedures. [ABSTRACT FROM AUTHOR]

The purpose of the present study was to describe a novel protocol for a minimally invasive pocket elimination surgery (MI-PES) in the posterior maxilla and mandible, which consists of the combined use of (1) an access flap based on an internally beveled gingivectomy with minimal to no papilla mobilization at the buccal aspect, and (2) a resective procedure with an apically positioned flap on the lingual aspect. The interproximal bone defects were accessed with a single (lingual) flap, and the bone architecture was modified by the adoption of piezoelectric inserts for controlled bone recontouring associated with fiber retention. Mean probing depth (PD) was 5.5 ± 0.8 mm before surgery and 2.7 ± 0.6 mm at the 6-month reevaluation. All treated pockets showed a postsurgical PD < 4 mm. Gingival recession (REC) was 0.3 ± 0.5 mm at baseline and increased to 1.6 ± 0.8 mm at 6 months. When buccal and lingual pockets were analyzed separately, a trend toward a similar PD reduction, less REC increase, and greater clinical attachment level gain was recorded for buccal pockets. These preliminary observations seem to support the use of MI-PES as a valuable option for pocket elimination, at least when residual pockets are associated with a shallow interproximal osseous crater in the posterior maxilla or mandible. [ABSTRACT FROM AUTHOR]

This randomized controlled trial aimed to determine the clinical efficacy of xenogeneic collagen membrane (XCM) derived from porcine peritoneum in combination with a coronally advanced flap (CAF) in the management of gingival recession defects and to compare the outcomes to those of connective tissue grafts (CTGs). A total of 12 systemically healthy individuals presenting with 30 isolated/multiple Cairo RT 1/2 gingival recession defects in maxillary canines and premolars were randomly treated either with CAF + XCM or CAF + CTG. Recession height (RH), gingival biotype (GB), gingival thickness (GT), width of keratinized gingiva (WKG), and width of attached gingiva (WAG) were recorded at baseline and at 3, 6, and 12 months. Patient perceptions of pain and esthetics and the modified root coverage esthetic score (MRES) were also documented. From baseline to 12 months, both groups showed a significant reduction in mean RH (CAF + CTG: 2.73 ± 0.79 mm to 0.33 ± 0.61 mm; CAF + XCM: 2.73 ± 0.88 mm to 1.20 ± 0.77 mm). At 12 months, CAF + CTG sites had a mean root coverage percentage (MRC%) of 85.60% ± 28.74%, whereas CAF + XCM sites had an MRC% of 55.13% ± 31.22%. CAF + CTG-treated sites had significantly better outcomes, with a greater number of sites achieving complete root coverage (n = 11) and higher MRES scores than the porcine peritoneal membrane group (P < .05). [ABSTRACT FROM AUTHOR]

The purpose of this study was to investigate the effects of experience level on the clinical and esthetic results of coronally advanced flap (CAF) surgery. A postgraduate student's first 40 CAF operations in the periodontology residency program were followed. The Miller Class I gingival recessions were divided into four chronologic groups (n = 10 in each). Clinical and esthetic evaluations were performed at baseline and after 6 months. The results of chronologic intervals were statistically compared. While the overall mean root coverage (RC) percentage was 73.6% and the complete RC was 60%, the mean RC percentages of the groups, respectively, were 45%, 55%, 86%, and 95%, showing that the mean and complete RC percentage increased as the experience level increased (P < .05). Similarly, as the experience level increased, closure of the gingival recession depth and width and esthetic scores increased, while the surgical time decreased significantly (P < .05). Complications were observed in three patients during the first interval and in two patients during the second interval, while no complications were observed in the other groups. This study showed that experience level can significantly affect the clinical and esthetic outcomes, operative time, and complication rates of CAF surgery. All education programs should determine how many of each surgical procedure residents must perform before they are considered experienced or expert surgeons who can work independently and predictably achie vesafe, acceptable outcomes. [ABSTRACT FROM AUTHOR]

Gingival recession is an apical shift of the gingival margin with exposure of the root surface to the oral cavity, which creates an esthetic problem. The present study was attempted to compare vestibular incision subperiosteal tunnel access (VISTA) with and without advanced platelet-rich fibrin (A-PRF) in the treatment of Miller Class I gingival recessions. A total of 24 patients were assigned randomly to either the test group (VISTA with A-PRF) or the control group (VISTA alone). Clinical parameters like recession depth, recession width, clinical attachment loss, width of keratinized gingiva, gingival thickness, and probing depth were recorded at baseline and at 3 and 6 months postoperatively. Intergroup comparison of mean root coverage (RC) in mm, %RC, change in width of keratinized gingiva and clinical attachment gain revealed no statistically significant difference (P > .05). Change in gingival thickness showed statistically significant improvement in test group. Within the limitations of this study, both treatment options (VISTA with A-PRF and VISTA alone) have resulted in predictable and comparable RC, with increased gingival thickness in the test group. [ABSTRACT FROM AUTHOR]

The biggest challenge during periodontal regeneration in the anterior region is the prevention of soft tissue recession. Minimally invasive surgeries, particularly papilla preservation techniques and soft tissue augmentation, may significantly reduce such postoperative soft tissue recession. This article presents the vestibular incision subperiosteal tunnel access (VISTA) approach for periodontal regeneration in the anterior region. A subperiosteal tunnel prepared from a single vertical vestibular incision adjacent to the defect is used for debridement, application of enamel matrix derivative, defect grafting with corticocancellous tuberosity bone, and insertion of the connective tissue graft. Evaluation of six cases with up to 6 years of follow-up showed improvements in all clinical parameters. The probing pocket depth improved from 8.2 ± 0.75 mm initially to 2.7 ± 0.52 mm at follow-up, clinical attachment level improved from 8.5 ± 0.83 mm initially to 2.7 ± 0.52 mm at follow-up, and midfacial gingival recession of 1 mm at two sites was corrected. The papillae were stable at all sites, with an average distance of 4.8 mm from the incisal edge to the papilla tip. This technique seems to be a promising approach for achieving both esthetic and functional goals of periodontal regenerative surgery. However, experience in performing microsurgeries and harvesting tuberosity tissues may be a limitation. [ABSTRACT FROM AUTHOR]

Although connective tissue grafts (CTGs) have been found to increase gingival thickness and reduce facial gingival recession in immediate implant placement and provisionalization (IIPP), they are associated with significant loss of buccal bone thickness. This loss is thought to be related to the preparation of the facial CTG recipient site. This technical report presents a modified dual-zone therapeutic concept in which the bone zone is grafted with bone graft and the tissue zone is grafted with tuberosity CTG without elevation of a facial partial- or full-thickness envelope. [ABSTRACT FROM AUTHOR]

The aim of this case series was to evaluate the clinical performance of a new volume-stable collagen matrix (VCMX) in combination with the modified coronally advanced tunnel technique (MCAT) for the treatment of gingival recessions. Thirteen patients with a total of 33 maxillary RT1 single and multiple gingival recessions were included in the study. Probing pocket depth (PPD), recession width (RECW), recession depth (REC), height of keratinized tissue (HKT), and gingival thickness (GT) were assessed at baseline and at the 12-month follow-up. Postoperative healing was uneventful in all cases without any complications. At 12 months, mean root coverage (MRC) was 92.88%, with complete root coverage (CRC) in 87.88% of treated sites. The present findings suggest that VCMX in combination with MCAT results in predictable coverage of maxillary RT1 gingival recessions. Further studies with larger sample sizes and control groups are needed to support these preliminary outcomes. [ABSTRACT FROM AUTHOR]

Objectives: The aim of the study was to evaluate the effect of injectable platelet-rich fibrin (i-PRF) on gingival thickness and gingival recession in individuals with thin periodontal phenotypes. Method and materials: In this prospective study, i-PRF was applied via a semisurgical method to augment 53 tooth regions with thin periodontal phenotypes. In order to ensure that sufficient blood clot formed on the side of the gingiva facing the bone and that i-PRF reached the area, a minimal incision was made with the help of a scalpel in the apical region of the relevant region, and the periosteum was elevated with a microsurgical instrument. To ensure sustained exposure to angiogenetic growth factors and enhance the histoconductive properties, i-PRF injection was applied to the relevant areas in foursessions at 10-dayintervals. Results: An increase in gingival thickness was achieved in 92.5% of the areas treated with i-PRF, and the desired gingival thickness (0.8 mm) was achieved in 44.9% of these areas. In addition, significant reductions in the amount of recession were observed in 83.3% of the 12 gingival recession areas (P= .005). Moreover, complete coverage was achieved in 60% of these regions. Conclusion: With the new i-PRF semisurgical method, it was shown that gingival thickness can be increased in tooth regions with thin gingiva, andthat areas of gingival recession can be covered. Further comprehensive studies are needed to fully understand the role of i-PRF in enhancing angiogenesis and the histoconductive properties of this fully autogenous blood concentrate. [ABSTRACT FROM AUTHOR]

In this position paper, the state of the art in immediate implant placement (IIP) at incisor-cuspid-premolar sites is described. The literature supports that the following prerequisites need to be simultaneously met for a predictable outcome: (1) there must be no acute infection; (2) there must be apical and palatal/lingual bone for implant anchorage; (3) the tooth must be inside the bone envelope; (4) the alveolar socket must have a favorable morphology (type I, IIa, IIb avoiding wide dehiscences); (5) there must be no midfacial recession; (6) the right implant must be selected; and (7) the surgeon needs to be experienced and skilled. A preoperative CBCT is required for IIP because multiple aforementioned prerequisites (2, 3, and 4) can only be assessed on the basis of 3D imaging. The final prerequisite relates to the importance of a perfect implant position, preferably leaving a horizontal gap of at least 2 mm between the implant shoulder and buccal bone wall. Guided surgery is preferred over free-hand surgery to accomplish this. Flapless surgery, socket grafting, connective tissue graft (CTG), and immediate provisionalization have been shown to contribute to hard and/or soft tissue stability. When the previously mentioned prerequisites are fulfilled, IIP may be considered over alternative treatment concepts (eg, early implant placement [EIP] and delayed implant placement [DIP]) based on time gain, minimal invasiveness, and similar outcomes in the literature. Given very strict selection criteria, clinicians should primarily screen patients for IIP before considering other treatment options with wider indications. [ABSTRACT FROM AUTHOR]

Objective: The present study aimed to evaluate the local effect of antimicrobial photodynamic therapy (aPDT) as adjunctive treatment for Grade C periodontitis in molars teeth. Method and materials: Thirty-eight molar teeth from 11 patients were included in this split-mouth randomized clinical trial. The teeth were randomly divided into two groups (n = 19 each) that were submitted to conventional scaling and root planing in addition to aPDT (test group) and to scaling and root planing in addition to aPDT simulation (control group). The following periodontal parameters were obtained prior to treatment (baseline) and at 3 months after the intervention: bleeding on probing, probing depth, gingival recession, clinical attachment level, and furcation level. A 5% significance level was adopted in the statistical analysis. Results: Both groups exhibited improvement in the clinical parameters (P < .001). However, the reductions in bleeding on probing and probing depth were greater in the test group (P < .001). There were no significant differences in the other clinical parameters between groups (P ≥ .130). Conclusions: Molar teeth treated with aPDT and scaling and root planing showed superior clinical improvement compared to those submitted only to scaling and root planing. aPDT may be used as adjunctive treatment for Grade C periodontitis affecting molar teeth since it seems to improve the clinical response to conventional debridement. [ABSTRACT FROM AUTHOR]

Gingival recessions with noncarious cervical lesions (NCCLs), also called combined defects, are common problems, and patients often seek treatment due to esthetic concerns or dentin hypersensitivity. This case series evaluates the effectiveness of the non-coronally advanced flap (CAF) technique combined with restorative treatment for Miller Class III gingival recessions with NCCLs. A total of 16 combined defects were included. The combined defect height (CDH), recession depth (RD), pocket depth (PD), keratinized tissue width (KTW), and presence of dentin hypersensitivity were recorded at baseline and 6 months postsurgery. The mean root coverage (mRC) was 83%, and 50% of defects presented complete root coverage (CRC). In the group with an initial KTW = 2 mm, mRC and CRC were significantly higher. Further randomized controlled studies with larger sample sizes are needed to verify the prognostic factor of combined non-CAF techniques and restorative treatment for gingival recessions with NCCLs. [ABSTRACT FROM AUTHOR]

Ehlers-Danlos syndrome (EDS) is one of the most common congenital connective tissue disorders affecting the synthesis and production of collagen cells. Medical implications on joints, muscles, soft tissue, and blood circulation have been documented in the literature. Many oral manifestations are displayed in EDS patients, including gingival recession, lack of attached gingiva, early severe periodontitis, dental anomalies, and dental caries. However, the literature is limited, is often contradictory, and provides no consensus for guidelines regarding prosthodontic, periodontal, and implant treatment of patients with EDS. Therefore, the aim of this systematic review is to analyze the pertinent literature regarding prosthodontics, periodontology, and implant dentistry in EDS patients. [ABSTRACT FROM AUTHOR]

This randomized controlled clinical trial evaluated the pinhole surgical technique (PST) combined with platelet-rich fibrin (PRF) for the management of multiple recession defects compared to PST alone. Ten patients with 51 Miller Class I/II or III gingival recessions were selected. Control sites were treated with PST alone, whereas test sites were treated with PST with PRF. Gingival recession depth (GRD), gingival recession width (GRW), probing depth (PD), clinical attachment level (CAL), keratinized tissue width (KTW), total soft tissue gain (TSTG), Plaque Index (PI), Gingival Index (GI), and gingival bleeding index (GBI) were measured at baseline and at 1, 3, and 6 months posttreatment. Both groups showed statistically significant root coverage. The mean recession coverage was 60.25% in the test group and 49.6% in the control group. The recession reduction from baseline was 2.50 mm for the test group and 1.88 mm for the control group. At the end of 6 months, all sites achieved adequate root coverage. PRF is a feasible alternative to connective tissue grafts as an adjunct to PST for the treatment of multiple recession defects. [ABSTRACT FROM AUTHOR]