Subepithelial Connective Tissue Research Articles

Comparison of morbidity at the donor site and clinical efficacy at the recipient site between two different connective tissue graft harvesting techniques from the palate: A randomized clinical trial.

This study was conducted to compare the pain levels in patients and the clinical efficacy of grafts obtained using two techniques, namely de-epithelialized gingival graft (DGG) and subepithelial connective tissue graft (SCTG), in combination with coronally advanced flap (CAF) for the treatment of multiple adjacent gingival recessions. Twelve patients were treated using DGG+CAF on one side and SCTG+CAF on the other. The patients' pain levels at the surgical site, the number of analgesics taken on days 3 and 7, the mean root coverage (MRC), the percentage of complete root coverage (CRC), color match, and gingival thickness (GT) at the graft recipient site were evaluated 6 months after surgery. The total number of analgesics taken during the 7-day period after surgery and pain levels at the surgical site from day 3 to day 7 were significantly higher in the DGG+CAF group compared to the SCTG+CAF group (P=0.001). In the 6-month follow-up, color match and CRC were significantly higher in the SCTG+CAF group, while GT was significantly higher in the DGG+CAF group. There was no significant difference in MRC between the two groups. The pain and analgesic consumption levels were higher in the DGG+CAF group compared to the SCTG+CAF group, and the recipient site had a weaker color match. However, this technique can lead to a greater increase in the thickness of the grafted area.

Comparison of Root Coverage by the Subepithelial Connective Tissue Graft With and Without Root Biomodification: A Comprehensive Clinical Study.

Being an autologous graft, a subepithelial connective tissue (SECT) graft shows more predictable root coverage better than other techniques. Hence, it is most likely to be widely used for recession treatment. During root planing, a smear layer forms on the root surface that cannot be removed by water or saline rinsing. To remove this smear layer, root biomodification agents are widely used.The present study was conducted to assess the efficacy of an SECT graft for root coverage with and without root biomodification. This study included 20 patients with no gender predilection, with an age range of 24-36 years and a mean age of 27.6 ± 4.24 years. The chosen range facilitatedthe acquisition of data in a relatively homogeneous population, minimizing the confounding effects of factors such as aging-related tissue changes or early-onset periodontal issues.All 40 sites were treated with the SECT and coronally advanced flap. Root conditioning in controls was done with distilled saline and tested using 24% ethylenediaminetetraacetic acid (EDTA) gel (Maquira; STM Meditech, Kerala). At baseline and at one, three, and six months postoperatively, pocket depth (PD) and clinical attachment levels (CALs) were assessed at four sites using a UNC-15 probe, and from the gingival margin to the cementoenamel junction (CEJ), the vertical recession was assessed. For the buccal surface, CALs were reduced significantly (p < 0.001). Following root conditioning with 24% EDTA, no difference was seen in the CAL in the control and test group either buccally or interproximally with a p-value of greater than 0.05. For PD, following a SECT graft or root conditioning, no significant change was observed in the buccal or interproximal region (p > 0.05). The vertical recession was significantly reduced with a p-value of less than 0.001 and depth coverage of 97.5%. The difference between the two groups was statistically non-significant (p > 0.05). The root surface coverage decreased significantly from 16.6 ± 2.8 to 0.45 ± 0.4 from baseline to six months, which was statistically significant (p < 0.001). This intergroup difference was non-statistical (p > 0.05). The present study concludes that the use of an SECT graft in root coverage can significantly improve the CAL, root surface area, and vertical recession both with and without root biomodification. We conclude that there is a significant decrease in the probing depth following SECT grafting and with root biomodification.

The Effectiveness of the Influence of the Second Generation Platelet-rich Fibrin in the Treatment of Localized Individual Miller I and II Gingival Recessions (Case Report)

BACKGROUND: The mucogingival surgical modality subepithelial connective tissue graft (SCTG) and the coronally positioned flap (CAF) in the treatment of Miller I and II gingival recessions are considered “gold standard,” that is, a technique for predictable and complete gingival root coverage defects, with long-term clinical stability of the obtained results. The counterpart of this type of technique is the relatively young platelet-rich fibrin (PRF) +CAF operational mode, due to the biological characteristics of this autologous platelet concentrate-PRF (angiogenesis, mitogenesis, osteopromotion, immunomodulation, and the capture of stem cells). The aim of this paper is to evaluate the clinical efficacy of the CAF+PRF combined technique, in the treatment of localized individual gingival recessions Miller I and II, through the comparison of the values of periodontal clinical parameters, measured preoperatively and 1 month postoperatively, as well as through the obtained immunohistochemical and histomorphometric analyzes of the taken biopsy material from the recipient site (the area of the grafted gingival defect), 1 month postoperatively. CASE REPORT: A 37-year-old man was admitted to the Clinic for Oral Surgery at JZU USKC “St. Panteleimon”- Skopje for surgical treatment of localized maxillary gingival recession Miller II at tooth 31. Periodontal clinical parameters were measured preoperatively: Vertical dimension of gingival recession (RD/VGR), periodontal pocket depth (PPD/PD), level of keratinized/attached gingiva (CAL), width of keratinized gingiva (KTW/KMW) and thickness of gingiva (GT), all measured in mm, as well as gingival biotype. A CAF+PRF therapy modality was used for the treatment of the gingival defect. One month postoperatively, repeated measurements of the values of the clinical periodontal indices were performed and they were compared with the measurements obtained preoperatively. CONCLUSION: A significant decrease in the values of RD, PPD, and CAL was determined at the 1-month measurements postoperatively. A non-significant gain in KTW and GT values was noted 1 month post-operative. There were no changes in the gingival biotype before and after surgery. PRF as second-generation autologous concentrates is not only an adjuvant and/or replacement of SCTG – the “gold standard” in the treatment of Miller I and II recessions but it is also a superior alternative in the surgical treatment of this type of shallow mucogingival defects.

Randomized controlled pilot study comparing small buccal defects around dental implants treated with a subepithelial connective tissue graft or with guided bone regeneration.

To compare subepithelial connective tissue grafts (SCTG) versus guided bone regeneration (GBR) for the treatment of small peri-implant dehiscence defects in terms of profilometric (primary outcome), clinical, and patient-reported outcome measures (PROMs). Sixteen patients who presented with small buccal bone dehiscences (≤3 mm) following single implant placement were recruited. Following implant placement, buccal bone defect sites were randomly treated either with a SCTG or GBR. Six patients who lacked bone dehiscences after implant placement were assigned to a negative control. Transmucosal healing was applied in all patients. Patients were examined prior (T1) and after (T2) implant placement, at suture removal (T3), at implant impression (T5), at crown delivery (T6), and 12 (T7) months after crown delivery. Measurements included profilometric outcomes, marginal bone levels, buccal bone and soft tissue thickness, PROMs, and clinical parameters. All data were analyzed descriptively. The median changes in buccal contour as assessed by profilometric measures between T1 and T5 showed a decrease of 1.84 mm for the SCTG group and 1.06 mm for the GBR group. Between T2 and T7, the median change in the buccal contour amounted to 0.45 mm for SCTG and -0.94 mm (=loss) for GBR. Patients' pain perception tended to be higher in SCTG than in GBR. All peri-implant soft tissue parameters showed healthy oral tissues and no clinically relevant differences between groups. Within the limitations of this pilot study, treating small peri-implant dehiscence defects with a SCTG might be a viable alternative to GBR. The use of a SCTG tended to result in more stable profilometric outcomes and comparable clinical outcomes to GBR. However, patient-reported outcome measures tended to favor GBR.

Effectiveness of Adjunctive Hyaluronic Acid Application in Surgical Treatment of Gingival Recession Sites

The aim of this systematic scoping review was to provide scientific evidence on the efficacy and methods of application of hyaluronic acid (HA) in the coverage of gingival recessions in terms of recession depth (RD) reduction, clinical attachment level (CAL) gain and probing depth (PD). An electronic search of the literature on the main databases was conducted. Initially, 405 articles were identified. Finally, four studies were included after the review process. It was not possible to perform a meta-analysis of the articles selected because of the differences among the surgical treatments and commercial formulations and compositions of HA. Both randomized controlled trials in this research examined type 1 gingival recessions treated with a coronally advanced flap. In the selected case series, recessions were treated with either a modified coronally advanced tunnel or laterally closed tunnel combined with a subepithelial connective tissue graft and HA. No significant variation was found in terms of PD. Modifications of CAL are connected to variations of RD; however, RD reduction is similar to the control group. HA seems to improve the clinical outcomes of gingival recession coverage in the short term, but the magnitude is limited. Formulations, surgical techniques and application methods are heterogeneous.

SUB-EPITHELIAL CONNECTIVE TISSUE GRAFT COMBINED WITH PLATELET-RICH FIBRIN IN MANAGEMENT OF PERI-IMPLANT SOFT TISSUE DEHISCENCE – A CASE REPORT

Over the past 2 decades the use of dental implants to advance functional and esthetic demands of dentition has amplified significantly. Patients today have become extremely concerned about esthetics which has become an integral part of the periodontal practice. One of the major factors contributing to improved esthetics is soft and hard tissue management. A chief esthetic concern is soft tissue defects around implant restoration. Implant soft tissue dehiscences compromise the aesthetics of the supported restorations and also implant survival in the long run. The present case report gives a novel technique for soft tissue reconstruction and covering defects associated with a palatally placed maxillary implant-supported restoration. A pedicle subepithelial connective tissue graft was prepared from the palatal mucosa and was displaced into the receptor site, along with the PRF. The receptor and donor site were primarily covered. After surgery of four months, the peri-implant soft tissue margin was compared with the baseline. A 2 mm increase in buccal soft tissue margin was accomplished. There was good stability of the soft tissue margin and the esthetic appearance of the implant site was well preserved. This case report demonstraes the possibility of fully correcting peri-implant soft tissue defects and achieving high patient satisfaction through a subepithelial connective tissue graft in conjunction with growth factors. KEYWORDS: Buccal peri implant soft tissue dehiscence ,peri implant recession , PRF , sub epithelial connective tissue graft

Antimicrobial and Defense Proteins in Chronic Rhinosinusitis with Nasal Polyps.

Background and Objectives: Chronic rhinosinusitis with nasal polyps (CRSwNP) presently remains a difficult disease to manage. Antimicrobial and defense proteins are important factors that could help characterize the role of microorganisms in CRSwNP pathogenesis, as the concept of microbial dysbiosis in CRS is still being considered. Our aim is to investigate the complex appearance, relative distribution and interlinks of human β defensin 2 (HBD-2), human β defensin 3 (HBD-3), human β defensin 4 (HBD-4), and cathelicidin LL 37 (LL 37) in chronic rhinosinusitis with nasal polyps (CRSwNP)-affected human nasal mucosa. Materials and Methods: The study group consisted of 48 samples from patients with CRSwNP. Samples were collected during functional endoscopic sinus surgery. The control group consisted of 17 normal healthy nasal mucosa samples gathered during routine septoplasty. β-defensin-2, β-defensin-3, β-defensin-4 and cathelicidin LL 37 in tissue were detected via immunohistochemical analysis. Results: HBD-2, HBD-3 and LL 37 were significantly decreased in epithelial cells in both primary and recurrent nasal polyp samples (p < 0.001) in comparison to control samples. HBD-2 was decreased in the subepithelial connective tissue of primary nasal polyp samples when compared to both recurrent polyp (p = 0.050) and control (p = 0.033) samples. In subepithelial connective tissue, significantly more HBD-3-positive structures were observed in primary nasal polyp samples (p = 0.049) than in control samples. In primary polyp samples, moderate correlations between connective tissue HBD-3 and connective (R = 0.584, p = 0.001) and epithelial tissue LL 37 (R = 0.556, p = 0.002) were observed. Conclusions: Decreased HBD-2, HBD-3 and LL 37 concentrations in the epithelium suggest a dysfunction of the epithelial barrier in patients with nasal polyps. Decreased subepithelial connective tissue HBD-2 suggests different responses to nasal microbiota in patients with primary nasal polyps compared to recurrent nasal polyps. Increased HBD-3 in subepithelial connective tissue suggests a possible role of this antimicrobial peptide in the pathogenesis of primary nasal polyps.

Ciliated foregut cysts involving the hepatopancreaticobiliary system: a clinicopathological evaluation with focus on atypical features.

Foregut cystic malformations are rare developmental abnormalities, which may involve the hepatopancreaticobiliary tract (HPBT). These cysts are composed of inner ciliated epithelium; subepithelial connective tissue layer; smooth muscle layer; and an outer fibrous layer. While radiopathologic findings are often diagnostic, atypical location and histologic features can pose a diagnostic challenge. We aimed to study ciliated foregut cysts (CFCs) in the HPBT, assess their clinicopathological features with a focus on atypical features. We collected cases of CFCs involving the HPBT from three large academic medical centres. H&E-stained slides and immunohistochemical stains (where available) were reviewed for each case. Relevant demographic, clinical and pathological information was collected from the medical records. 21 cases were identified. The median age was 53 years (range, 3-78 years). 17 cysts were identified within the liver (segment 4 was the most common location, n=10) and 4 in the pancreas. Cysts were mostly identified incidentally (n=13), abdominal pain was a common symptom (n=5). Cyst size ranged from 0.7 to 17.0 cm (median, 2.5 cm). Radiological findings were available in 17 cases. Cilia were identified in all cases. 19 of 21 cases demonstrated the presence of a smooth muscle layer (thickness, <0.1 mm to 3.0 mm). Three cases showed gastric metaplasia, while one case revealed additional low-grade dysplasia, with features similar to intraductal papillary neoplasm of the bile duct. We highlight clinicopathological features of CFCs in the HPBT. The histomorphology is usually straightforward; however, unusual location and atypical features can pose a diagnostic challenge.

Management of Fenestration in a Non-vital Maxillary Lateral Incisor Using Connective Tissue Grafting: A Pin-hole Surgical Technique.

Mucosal fenestration is clinical entity in which the overlying gingiva or mucosa is also denuded thus the root is exposed to oral cavity. If left untreated, they may be a source of infection by giving entry to oral pathogen, leading to further progression of periodontal disease. Depending on their site of presence, they may also be a reason of esthetic concern to some patients. This case report describes a situation where a mucosal fenestration developed in the upper left lateral incisor, which was successfully treated with followed by subepithelial connective tissue grafting.

Clinical effectiveness of periosteal pedicle graft for the management of gingival recession defects-a systematic review and meta-analysis.

The purpose of this systematic review and meta-analysis was to evaluate the effectiveness of periosteal pedicle graft (PPG) in terms of root coverage and patient related outcomes. To the best of our knowledge this is the first systematic review with meta-analysis on PPG. A comprehensive search was performed using electronic and hand searches upto January 2023. Primary outcomes were Recession depth Reduction (Rec Red), mean root coverage (mRC) and complete root coverage (CRC). Secondary outcomes were gain in width of keratinized gingiva (WKG) and patient reported outcome measures (PROMs). Meta-analysis was performed when possible. The risk bias assessment was done using RevMan5.4.1 and Joanna Briggs institute scale for the included RCTs and case series respectively. A total of 8 RCTs and 2 case series (538 recession sites) were included based upon the predefined inclusion and exclusion criteria. The follow up period ranged from 6 months to 18 months. Results demonstrated that mRC of PPG + Coronally advanced flap (CAF) was 87.7% for localized gingival recession defects (GRDs) and 84.83% for multiple GRDs. An overall gain in WKG (Weighted Mean =1.49 ± 0.27 mm) was observed among all the included studies in the PPG + CAF group with mean difference (-0.10 (95% CI [-0.52, 0.33], p = 0.66)). Sub-group meta-analysis comparing PPG + CAF with sub-epithelial connective tissue graft (SCTG) + CAF resulted in similar outcomes in terms of Rec Red (0.10 (95% CI [-0.56 to 0.77], p = 0.76)) and gain in WKG (-0.03 (95% CI [-0.25 to 0.18], p = 0.76)). In terms of PROMs systematic review revealed better patient satisfaction with PPG + CAF than SCTG + CAF. PPG + CAF is a viable treatment modality for management of GRDs. The primary and secondary outcomes achieved utilizing PPG + CAF were found to be comparable to other conventional techniques including the gold standard i.e., SCTG.

A meta-analysis of amnion membrane in gingival recession.

This systematic review was conducted to evaluate the effects of Amniotic Membrane (AM) as compared with other treatment modalities on the clinical outcomes, in gingival recession defects. Only Randomized controlled clinical trials published before 2020 were included. Studies were divided into 5 subgroups (1) Coronally advanced flap (CAF)+AM v/s Chorion membrane (CM) (2) CAF+AM v/s CAF+PRF (3) CAF+AM v/s CAF+Collagen membrane (4) CAF+AM v/s CAF (5) CAF+AM v/s CAF+ Subepithelial connective tissue graft (SCTG). Studies were evaluated for Recession Depth (RD) (Primary outcome); Clinical Attachment Level (CAL), Recession Width (RW) and Width of Keratinized Gingiva (WKG) (Secondary outcomes). The inverse variance approach was utilised in fixed or random effect models for the meta-analysis, which were chosen based on heterogeneity. Results suggested that the use of AM membrane showed comparable results in improving RD, RW, or CAL in the treatment of Miller Class-I and Class-II gingival recession compared to the other treatment modalities. However, CAF+AM resulted in statistically significant improvement in RD and RW than CAF+SCTG, though CAL gain was statistically more with CAF+SCTG. However, increase of WKG was found to be statistically significantly more in all the other treatment modalities as compared to CAF+AM. With properties like self-adherence, bioavailability and presence of growth factors AM with CAF can produce good aesthetic root coverage comparable to SCTG and PRF, where width of keratinized gingiva is adequate.

Differential Expression and Localisation of Acetyl-Glucosamine, Acetyl-Galactosamine, Galactose, Mannose and Glucose Specific Lectins in Lingual Tonsil of Buffalo (Bubalus bubalis)

The present study is the most comprehensive representation of lectin binding sites in various structural components of the lingual tonsil of six adult healthy buffaloes. The study was useful in determining the specific binding affinities of sixteen lectins of the N-acetylglucosamine group, i.e., Triticum vulgaris (WGA), succinylated Triticum vulgaris (s-WGA), Lycopersicon esculentum (LEL), Datura stramonium (DSL), Solanum tuberosum (STL); N-acetylgalactosamine group, i.e., Glycine max (SBA), Dolichos biflorus (DBA), Ricinus communis (RCA), Vicia villosa agglutinin (VVL); galactose group i. e Griffonia simplicifolia isolectin B4 (GS1B4), Arachis hypogaea (PNA), Artocarpus integrifolia (Jacalin), Erythrina crisa-galli (ECL); and glucose/mannose group i.e. Canavalia ensiformis (Con A), Lens culinaris agglutinin (LCA), Pisum sativum agglutinin (PSA) at structures of the lingual tonsil. The stratum spinosum of stratified squamous epithelium and modified reticular epithelium was strongly demarcated by lectins of the N-acetylglucosamine group. In addition, VVL, jacalin, and Con A lectins also showed strong responses for the same layer. The RCA, PNA, Con A, and PSA were the best markers for the collagen fibers of the subepithelial connective tissue. The lymphoid cells of the inter- and parafollicular region possessed receptors for ECL, WGA, and Con A. In contrast, the germinal center B cells were labeled only by the lectins of the glucose/mannose group. The mucosal secretions and the endothelium of the blood vessels were predominantly composed of glucosamine, sialic acid, and galactosamine sugars. The characteristic localization of lectins suggests the presence of specific receptor sites that may be useful for studying early disease pathogenesis and developing oral vaccines. In addition, the study will provide a database for comparing histochemical changes in different disease states.

Local Concentrations of TGF-β1 and IGF-1 Appear Determinant in Regulating Bone Regeneration in Human Postextraction Tooth Sockets

Healing after tooth extraction involves a series of reparative processes affecting both alveolar bone and soft tissues. The aim of the present study was to investigate whether activation of molecular signals during the healing process confers a regenerative advantage to the extraction socket soft tissue (ESsT) at 8 weeks of healing. Compared to subepithelial connective tissue graft (CTG), qRT-PCR analyses revealed a dramatic enrichment of the ESsT in osteogenic differentiation markers. However, ESsT and CTG shared characteristics of nonspecialized soft connective tissue by expressing comparable levels of genes encoding abundant extracellular matrix (ECM) proteins. Genes encoding the transforming growth factor-β1 (TGF-β1) and its receptors were strongly enriched in the CTG, whereas the transcript for the insulin-like growth factor-1 (IGF-1) showed significantly high and comparable expression in both tissues. Mechanical stimulation, by the means of cyclic strain or matrix stiffness applied to primary ESsT cells (ESsT-C) and CTG fibroblasts (CTG-F) extracted from the tissue samples, revealed that stress-induced TGF-β1 not exceeding 2.3 ng/mL, as measured by ELISA, in combination with IGF-1 up to 2.5 ng/mL was able to induce the osteogenic potential of ESsT-Cs. However, stiff matrices (50 kPa), upregulating the TGF-β1 expression up to 6.6 ng/mL, caused downregulation of osteogenic gene expression in the ESsT-Cs. In CTG-Fs, endogenous or stress-induced TGF-β1 ≥ 4.6 ng/mL was likely responsible for the complete lack of osteogenesis. Treatment of ESsT-Cs with TGF-β1 and IGF-1 proved that, at specific concentrations, the two growth factors exhibited either an inductive-synergistic or a suppressive activity, thus determining the osteogenic and mineralization potential of ESsT-Cs. Taken together, our data strongly warrant the clinical exploration of ESsT as a graft in augmentative procedures during dental implant placement surgeries.

Application and research progress of autologous soft tissue substitute materials in gingival augmentation of natural teeth

Subepithelial connective tissue or free gingival grafts are often used in traditional mucogingival surgery to treat gingival recession and keratinized gingival insufficiency. However, due to the disadvantages of autologous soft tissue grafts, such as the preparation of the second surgical site, the limited amount of tissue in the donor site, and postoperative discomfort for patients, the research on autologous soft tissue substitute materials has attracted extensive attention. A variety of donor-substitute materials from different sources are currently used in membranous gingival surgeries, including platelet-rich fibrin, acellular dermal matrix, xenogeneic collagen matrix, etc. This paper reviews the research progress and application of several different types of substitute materials in soft tissue augmentation for natural teeth, providing a reference for the application of autologous soft tissue substitutes in clinical gingival augmentation surgery.

V06-08 UPPER TRACT TUMOR EN BLOC ENUCLEATION: A NOVEL APPROACH TO THE DIAGNOSIS AND MANAGEMENT OF UPPER TRACT UROTHELIAL CARCINOMA

You have accessJournal of UrologyCME1 Apr 2023V06-08 UPPER TRACT TUMOR EN BLOC ENUCLEATION: A NOVEL APPROACH TO THE DIAGNOSIS AND MANAGEMENT OF UPPER TRACT UROTHELIAL CARCINOMA Joshua Jue and Noel Armenakas Joshua JueJoshua Jue More articles by this author and Noel ArmenakasNoel Armenakas More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000003274.08AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: The identification of high grade disease and subepithelial connective tissue invasion (pT1 disease) are important prognostic factors which guide treatment options in upper tract urothelial carcinoma (UTUC). We aim to describe and demonstrate our novel en bloc enucleation technique for the endoscopic diagnosis and treatment of upper tract tumors. METHODS: We detail the instruments required for this procedure, as well as the surgical technique to perform an en bloc enucleation and specimen removal. Endoscopic video of a 2 cm renal pelvis tumor demonstrates all aspects of the technique, and histopathologic slides illustrate the diagnostic information obtained. RESULTS: A ureteral access sheath is inserted distal to the upper tract tumor, and a flexible ureteroscope is used to visualize the extent of upper tract disease and tumor characteristics. A 200 mm thulium fiber laser partially ablates the tumor surface to create an edge for tissue biopsy and post-ablation urine cytology. The tumor base is identified and the subepithelial connective tissue is carefully entered with low ablation laser settings. The correct tissue plane is extended by maintaining the ureteroscope in the subepithelial connective tissue and continuing the dissection along the entire width of the tumor base. Once the tumor is enucleated, a Nitinol stone retrieval basket is used to remove the specimen(s) and a ureteral stent is placed. CONCLUSIONS: En bloc enucleation is a safe technique that provides extensive histopathologic information in upper tract urothelial carcinoma. In cases where complete enucleation is not feasible, this procedure affords a mechanism for large caliber biopsies, enhancing diagnostic accuracy. This technique can be therapeutic in low grade and stage disease, but also offers a mechanism for large caliber biopsy if complete enucleation cannot be performed. Source of Funding: None © 2023 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 209Issue Supplement 4April 2023Page: e511 Advertisement Copyright & Permissions© 2023 by American Urological Association Education and Research, Inc.MetricsAuthor Information Joshua Jue More articles by this author Noel Armenakas More articles by this author Expand All Advertisement PDF downloadLoading ...

Reconstruction of Interdental Papillae using Composite Resin Restoration and Modified Coronally Advanced Flap Technique with Sub-Epithelial Connective Tissue Graft- A Case Report with 1- Year Follow-Up

Reconstruction of Interdental Papillae using Composite Resin Restoration and Modified Coronally Advanced Flap Technique with Sub-Epithelial Connective Tissue Graft- A Case Report with 1- Year Follow-Up

Gingival biotype modification with collagen matrix or autogenous subepithelial connective tissue graft: Histologic and volumetric analyses in a beagle model

ObjectivesTo evaluate the volumetric effect and biocompatibility of porcine tendon-derived type I collagen matrix graft (CG) in gingival biotype modification (GBM) compared with subepithelial connective tissue graft (SCTG) in a beagle model. MethodsSurface analysis using scanning electron microscopy and a collagen degradation assay of CG was performed in vitro. Six adult dogs were used in in vivo experiment, and each received autologous SCTG or CG at the anterior side. Histometric and three-dimensional digital volume analyses were conducted to compare quantitative changes in CG and SCTG in GBM. Immunohistochemical analysis was performed for the qualitative evaluation of CG compared to SCTG. ResultsCG had a double-layered structure, and its degradation was slower than that of other well-reported materials. No critical problems were associated with the healing procedure. Changes in gingival thickness and volume in the CG and SCTG groups were equivalent, with no significant differences between the groups. Type I collagen and vascular endothelial growth factor expression levels were similar in both groups. SignificanceCG and SCTG had equivalent potential for GBM in terms of quantity and quality. Additionally, CG could be used as a reasonable substitute for SCTG, making surgery convenient and predicting successful clinical outcomes.

Root coverage using laterally positioned flap and subepithelial connective tissue graft for the treatment of the isolated recession defects on mandibular anterior teeth: case report

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Soft tissue contour changes at implant sites with or without soft tissue grafting in the esthetic zone: A retrospective case-control study with a 12-year follow-up.

To evaluate the volumetric changes and peri-implant health at implant sites with and without previous soft tissue grafting over a 12-year observation period. Eighteen patients received dental implants and simultaneously guided bone regeneration in the esthetic zone (15-25) for dental rehabilitation. Three months following implant placement, 8 patients (test) received an additional subepithelial connective tissue graft, whereas 10 patients (control) did not receive any additional treatment. One week after prothesis delivery and at the 5 and 12 years follow-up examination, impressions were taken. Obtained casts were processed for profilometric and linear analyses. The mean distance (MD) in the mid-buccal area between the two surfaces was considered the primary outcome. Peri-implant health was assessed based on clinical and radiographic data. Nine female and 7 male patients were re-assessed after a median follow-up time of 144.5months (Min: 114.8; Max: 213.0). The median reduction of MD amounted to -0.81 mm (Min: -1.39; Max: 0.52) in the test group and -0.56 mm (Min: -0.93; Max: 0.11) in the control group, (intergroup comparison p= .607, CI 95%: -0.760/0.530). None of the implants was diagnosed with peri-implantitis. Six tests and two control implants were diagnosed with peri-implant mucositis (p= .103). Despite the limited number of included patients, similar results in terms of volumetric, linear changes, and peri-implant conditions could be detected at implant sites with or without soft tissue grafting over a period of 12 years.

Comparison of chorion allograft and subepithelial connective tissue autograft in the treatment of gingival recession- A randomized controlled clinical trial.

To compare the clinical outcomes of subepithelial connective tissue graft and chorion membrane along with coronally advanced flap in the treatment of gingival recession. A total of 12 patients with 24 sites showing isolated bilateral Miller's class I and II gingival recessions were randomly allocated into two treatment sites. One site, connective tissue graft, (n=12 sites) while on the contra-lateral site, chorion membrane (n=12 sites) was used with coronally advanced flap. Clinical parameters: probing depth, recession depth, recession width, width of keratinized gingiva, relative attachment level, thickness of keratinized gingiva were recorded at the baseline, 3 months, and 6 months. The amount of root coverage was evaluated after 6 months. Statistically significant differences were observed between test and control sites in terms of recession depth, recession width, width of keratinized gingiva and thickness of keratinized gingiva at 6 months. The test sites presented 66.17±18.85% and the control site showed 87.17±18.33% of root coverage at 6 months. Very limited amount of recession coverage with chorion membrane and did not serve as an alternative to connective tissue graft. CTRI/2017/12/010964.