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Chen Z, Zhong J, Xie Y, Fan K, Zhou S, Ouyang X. Does vestibular incision improve the outcomes of vestibular incision subperiosteal tunnel technique: A randomized clinical trial for treatment of multiple adjacent type 1 gingival recession. J ESTHET RESTOR DENT 2023; 35:1131-1138. [PMID: 37078417 DOI: 10.1111/jerd.13051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/27/2023] [Accepted: 03/31/2023] [Indexed: 04/21/2023]
Abstract
OBJECTIVE The purpose of this study was to compare the clinical outcomes of vestibular incision subperiosteal tunnel technique (VISTA) and tunnel approach combined with connective tissue graft (CTG) for treatment of type 1 (RT1) multiple gingival recession. MATERIALS AND METHODS Twenty-four patients with a total of 59 nonmolar recession teeth were randomly allocated to VISTA + CTG or Tunnel + CTG group. Recession depth and width, probing depth, clinical attachment level, width of keratinized tissue, gingival thickness, flap tension, mean root coverage (MRC), complete root coverage (CRC), patient-centered, and esthetic outcomes (root coverage esthetic scores, RES) were assessed at baseline and 12 months after surgery. RESULTS At 12 months, MRC of 91.13 ± 16.96% and 91.40 ± 13.53%, CRC of 70.97% and 67.86% were observed for VISTA + CTG and Tunnel + CTG group respectively, with no significant difference between the two groups (p > 0.05). High RES of 8.52 ± 1.46 and 8.82 ± 1.44 was obtained in VISTA + CTG and Tunnel + CTG group respectively, without showing a significant difference (p = 0.245), while less scar formation was observed in Tunnel + CTG group (p < 0.01). CONCLUSIONS Both procedures were effective for root coverage in RT1 multiple gingival recession at 12 months. Better esthetic result with less scar formation was obtained in tunnel approach combined with CTG without vestibular incision. (Registration number: ChiCTR-INR-16007845, registered on 19/12/2015, http://www.chictr.org.cn). CLINICAL SIGNIFICANCE VISTA + CTG and Tunnel + CTG were both effective for root coverage in RT1 multiple gingival recession, with satisfying esthetic outcomes. However, it is suggested in critical esthetic areas, treatment options of making vertical incisions should be carefully considered.
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Affiliation(s)
- Ziyuan Chen
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
- Second Clinical Division, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Jinsheng Zhong
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Ying Xie
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Keang Fan
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
- Third Clinical Division, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Shuangying Zhou
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
| | - Xiangying Ouyang
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China
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Öngöz Dede F, Bozkurt Doğan Ş, Çelen K, Çelen S, Deveci ET, Seyhan Cezairli N. Comparison of the clinical efficacy of concentrated growth factor and advanced platelet-rich fibrin in the treatment of type I multiple gingival recessions: a controlled randomized clinical trial. Clin Oral Investig 2023; 27:645-657. [PMID: 36401070 DOI: 10.1007/s00784-022-04775-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 11/06/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVES The purpose of this randomized controlled clinical trial was to compare and evaluate the clinical effects of concentrated growth factor (CGF) and advanced platelet-rich fibrin (A-PRF) applied together with coronally advanced flap (CAF) technique using a microsurgical approach in the treatment of type I multiple gingival recessions (GR). MATERIALS AND METHODS Sixteen patients with multiple recession defects (Cairo type I) were included in this randomized and controlled study. Forty-five gingival recession defects were randomly equally divided into three groups (n = 15): CAF + CGF (test site); CAF + A-PRF (test site), and CAF alone (control site). Clinical attachment level (CAL), vertical gingival recession (VGR), horizontal gingival recession (HGR), gingival thickness (GT), width of keratinized gingiva (KGW), percentages of the mean (MRC), and complete root coverage (CRC), patient esthetic score (PES), and hypersensitivity score (HS) were recorded at baseline and 6 months after surgery. Patient comfort score (PCS) was evaluated at the day of surgery. RESULTS Significant improvements were determined in CAL, VGR, HGR, KGW, and GT at 6 months when compared to baseline levels in intra-group comparisons for all groups, and also GT was increased in CAF + A-PRF and CAF + CGF compared to CAF alone at 6 months in intergroup comparisons (p < 0.05). At 6 months, MRC was detected 85.66 ± 22.68% in the CAF + CGF, 90.88 ± 20.87% in the CAF + A-PRF, and 75.10 ± 32,37% in the CAF alone, and a significant increase was detected in the CAF + A-PRF group compared to CAF alone (p < 0.05). CRC in CAF + CGF was 66.66%, in CAF + A-PRF 80% and in CAF alone was 53.33% (p > 0.05). PES and HS values showed significant improvement from baseline to 6 months for all groups and also in CAF + CGF and CAF + A-PRF compared to CAF alone at 6 months in intergroup comparisons (p < 0.05). CONCLUSIONS The present study showed that the use of A-PRF and CGF membranes in GR therapy may have an additional benefit in GT increase and also A-PRF may increase the percentages of MRC. The use of A-PRF and CGF membranes may be beneficial in terms of improving patient-related parameters. CLINICAL RELEVANCE A-PRF and CGF may be superior to CAF alone in terms of patient-related parameters and GT increase in multiple recession defects. TRIAL REGISTRATION NUMBER 17578e02-00a9-4a41-8c8d-42a637143531.
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Affiliation(s)
- Figen Öngöz Dede
- Faculty of Dentistry, Department of Periodontology, Ordu University, 52100, Altınordu. Ordu, Turkey.
| | - Şeyma Bozkurt Doğan
- Faculty of Dentistry, Department of Periodontology, Yıldırım Beyazıt University, Ankara, Turkey
| | - Kübra Çelen
- Faculty of Dentistry, Department of Periodontology, Ordu University, 52100, Altınordu. Ordu, Turkey
| | - Selman Çelen
- Faculty of Dentistry, Department of Periodontology, Ordu University, 52100, Altınordu. Ordu, Turkey
| | - Emre Taha Deveci
- Faculty of Dentistry, Department of Periodontology, Ordu University, 52100, Altınordu. Ordu, Turkey
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Cairo F, Burkhardt R. Minimal invasiveness in gingival augmentation and root coverage procedures. Periodontol 2000 2023; 91:45-64. [PMID: 36694255 DOI: 10.1111/prd.12477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/30/2022] [Accepted: 07/20/2022] [Indexed: 01/26/2023]
Abstract
Minimally invasive surgical procedures aim at optimal wound healing, a reduction of postoperative morbidity and, thus, at increased patient satisfaction. The present article reviews the concept of minimal invasiveness in gingival augmentation and root coverage procedures, and critically discusses the influencing factors, technical and nontechnical ones, and relates them to the underlying biological mechanisms. Furthermore, the corresponding outcomes of the respective procedures are assessed and evaluated in relation to a possible impact of a minimized surgical invasiveness on the clinical, aesthetic, and patient-related results.
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Affiliation(s)
- Francesco Cairo
- Head Research Unit in Periodontology and Periodontal Medicine, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Rino Burkhardt
- Private Practice, Zurich, Switzerland.,Center of Dental Medicine, University of Zurich, Zurich, Switzerland.,Prince Philip Dental Hospital, The University of Hong Kong, Hong Kong, Hong Kong, SAR.,Department of Periodontics & Oral Medicine, University of Michigan, Ann Arbor, Michigan, USA
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Durgapal S, Shetty M. Magnification in Periodontics: An Overview. JOURNAL OF HEALTH AND ALLIED SCIENCES NU 2022. [DOI: 10.1055/s-0042-1747911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractA plethora of changes in the concept and the techniques in dental sciences and an increase in patient awareness have spawned demand in advanced dental treatment encompassing elimination of disease with more precision and less discomfort. The use of magnification systems like microscopes is widespread in the medical field, and now it has successfully spread its wings in dentistry. Visual enhancement by using loupes or surgical microscopes can render refinement in the basic surgical procedures. Magnification periodontics refers to the wide range of procedures performed by the use of magnification systems like loupes and microscopes that allow convergence of ideas and efforts, which can make a huge impact on patients. Periodontal procedures are being increasingly performed nowadays that have enabled enhanced outcomes, which were difficult to achieve with the macrosurgery procedures when wound healing and tissue trauma are in consideration. The surgical operating microscope works within the microsurgical triad that includes illumination increased precision and magnification. The incorporation of smaller instruments and sutures and better visualization of the operating site enhance the surgical skills of the clinician. In the past decade, various periodontal procedures from the removal of calculus to the placement of dental implants have been performed using the surgical microscope, which have invariably provided favorable results. It is a topic of interest in the future of periodontal therapy.
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Affiliation(s)
- Surabhi Durgapal
- Department of Periodontics, A B Shetty Memorial Institute of Dental Sciences, Nitte Deemed to be University, Mangalore, Karnataka, India
| | - Mamatha Shetty
- Department of Periodontics, A B Shetty Memorial Institute of Dental Sciences, Nitte Deemed to be University, Mangalore, Karnataka, India
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Dhawan S, Takiar M, Manocha A, Dhawan R, Malhotra R, Gupta J. Functionally graded membrane: A novel approach in the treatment of gingival recession defects. J Indian Soc Periodontol 2021; 25:411-417. [PMID: 34667384 PMCID: PMC8452168 DOI: 10.4103/jisp.jisp_583_20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 04/02/2021] [Accepted: 05/18/2021] [Indexed: 11/29/2022] Open
Abstract
Background: Guided tissue regeneration has recently been advocated in re-constructing soft-tissue dimensions in recession defects. Advancement in nanotechnology has led to increased zest for approaches such as electrospinning of biologically active; nanofibrous functionally graded regenerative membranes for periodontal tissue engineering. A functionally graded membrane (FGM) had been tailored by incorporating chitosan and nano-hydroxyapatite over Amnion membrane and used in gingival recession defects. Study Design: It was single-blind, randomized controlled study. Split-mouth study was conducted in nine patients and 22 sites with recession defects were selected. Sites were divided into Group A (Amnion membrane with coronal advanced flap) and Group B (FGM with coronal advanced flap). Materials and Methods: Sites were assessed clinically by recording plaque index (PI), gingival index (GI), vertical recession defect depth (VRDD), relative clinical attachment level (CAL), and width of keratinized tissue at baseline, 3–6 months; and radiographically by recording linear bone growth by dentascan at baseline and 6 months. Result: Both groups showed statistically significant reduction in PI, GI and VRDD, and CAL and nonsignificant reduction in width of keratinized tissue at 3 and 6 months postoperatively. Group A showed statistically significant linear bone growth at 6 months. Group B also showed gain in linear bone growth at 6 months; however, result was statistically nonsignificant. Conclusion: FGM had shown favorable results by enhancing bone growth while preventing the gingival tissue downgrowth.
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Affiliation(s)
- Shivani Dhawan
- Department of Periodontology and Oral Implantology, Maharishi Markandeshwar College of Dental Sciences and Research, Maharishi Markandeshwar Deemed to be University, Ambala, Haryana, India
| | - Megha Takiar
- Department of Periodontology and Oral Implantology, Maharishi Markandeshwar College of Dental Sciences and Research, Maharishi Markandeshwar Deemed to be University, Ambala, Haryana, India
| | - Anish Manocha
- Department of Periodontology and Oral Implantology, Maharishi Markandeshwar College of Dental Sciences and Research, Maharishi Markandeshwar Deemed to be University, Ambala, Haryana, India
| | - Rajan Dhawan
- Department of Conservative Dentistry and Endodontics, Maharishi Markandeshwar College of Dental Sciences and Research, Maharishi Markandeshwar University, Ambala, Haryana, India
| | - Ranjan Malhotra
- Department of Periodontology and Oral Implantology, Himachal Dental College, Sunder Nagar, Himachal Pradesh University, Shimla, India
| | - Jyoti Gupta
- Department of Periodontology and Oral Implantology, Harvansh Singh Judge Institute of Dental Sciences, Chandigarh, India
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Srivastava R, Mohan R, Saravana Balaji MD, Vijay VK, Srinivasan S, Navarasu M. A Randomized Controlled Trial on a Minimally Invasive Microsurgical Versus Conventional Procedure for the Management of Localized Gingival Recession in Esthetic Zone using Alloderm. J Pharm Bioallied Sci 2021; 13:S476-S483. [PMID: 34447138 PMCID: PMC8375812 DOI: 10.4103/jpbs.jpbs_756_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 11/24/2022] Open
Abstract
Background: Microsurgical technique is a recent advancement in periodontal plastic surgery, which improves the predictability of periodontal procedures, providing better esthetic results with minimal postoperative discomfort. Alloderm is an alternate to connective tissue grafts, which has been successfully used for root coverage. The present study aims at Comparative assessment of Micro and Conventional surgical techniques for root coverage using coronally positioned flap (CPF) with Alloderm. Materials and Methods: Twenty sites with Miller's Class I or II gingival recession defects were selected; sites were randomly divided into control and test groups. Test sites were treated with CPF and acellular dermal matrix (ADM) using Microsurgery and control sites were treated with CPF and ADM using conventional method. Results: Conventional and Microsurgical procedures for root coverage showed a statistically significant difference in all clinical parameters from baseline to 3 and 6 months (P < 0.01). The microsurgical technique demonstrated a significant difference in ultrasonographic thickness of gingiva (P < 0.003) and patient satisfaction score (P < 0.005). Conclusion: Microsurgical procedure for root coverage was found to be superior to the conventional macrosurgical approach under magnification. Microsurgical sites healed faster with neovascularization demonstrated on ultrasonographic evaluation with improved gingival thickness and patient satisfaction scores.
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Affiliation(s)
- Robin Srivastava
- Consulting Periodontist, Savitri Hospital, Jhansi, Uttar Pradesh, India
| | - Ranjana Mohan
- Department of Periodontology, RVS Dental College and Hospital, Coimbatore, Tamil Nadu, India
| | - M D Saravana Balaji
- Department of Periodontology, RVS Dental College and Hospital, Coimbatore, Tamil Nadu, India
| | - V K Vijay
- Department of Periodontology, Best Dental College and Hospital, Madurai, Tamil Nadu, India
| | - S Srinivasan
- Department of Periodontology, Rajah Muthaiah Dental College and Hospital, Chidambaram, Tamil Nadu, India
| | - M Navarasu
- Department of Periodontics, Best Dental College and Hospital, Madurai, Tamil Nadu, India
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Di Gianfilippo R, Wang IC, Steigmann L, Velasquez D, Wang HL, Chan HL. Efficacy of microsurgery and comparison to macrosurgery for gingival recession treatment: a systematic review with meta-analysis. Clin Oral Investig 2021; 25:4269-4280. [PMID: 33928441 DOI: 10.1007/s00784-021-03954-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/19/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVES Microsurgical principles, techniques, and armamentarium have made significant contributions to the periodontal plastic surgery. The present meta-analysis aimed to investigate the overall efficacy of microsurgery on root coverage, and its clinical outcomes when compared to traditional macrosurgery. MATERIAL AND METHODS Electronic searches on PubMed, Embase, and CINAHL were used to retrieve prospective clinical trials. Primary outcomes were the mean root coverage (mRC) and probability of achieving complete root coverage (cRC), with secondary outcomes as other periodontal parameters and patient-reported outcome measures (PROMs). RESULTS Nineteen studies were included in the quantitative analysis. Microsurgery was estimated to achieve 83.3% mRC and 69.3% cRC. From a subgroup of 9 comparative studies, it was estimated microsurgery increased mRC by 6.6% (p<0.001) and cRC by 27.9% (p<0.01) compared to macrosurgical control treatments. Operating microscope (OM) yielded a significantly 6.7% higher mRC than the control group (p=0.002), while using loupes showed 6.16% increase in mRC with a borderline significance (p=0.09). OM and loupes-only had a 31.05% (p=0.001) and 25.54% (p=0.001) increases in achieving cRC compared to control, respectively. As for PROMs, microsurgery reduced postoperative pain (p<0.001) and enhanced esthetics (p= 0.05). CONCLUSIONS Microsurgery significantly improved mean root coverage, probability of achieving complete root coverage, esthetics, and post-surgical recovery. Microsurgery enhances not only subclinical healing but also clinical outcomes, possibly owing to its minimally invasive approach and surgical precision. CLINICAL RELEVANCE Periodontal plastic microsurgery is minimally invasive, inducing less surgical trauma and ultimately resulting in improved clinical outcomes, patient's satisfaction, and quality of life.
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Affiliation(s)
- Riccardo Di Gianfilippo
- Department of Periodontics and Oral Medicine, University of Michigan - School of Dentistry, 1011 North University Avenue, Ann Arbor, MI, USA
| | - I-Ching Wang
- Department of Periodontics and Oral Medicine, University of Michigan - School of Dentistry, 1011 North University Avenue, Ann Arbor, MI, USA
| | - Larissa Steigmann
- Department of Periodontics and Oral Medicine, University of Michigan - School of Dentistry, 1011 North University Avenue, Ann Arbor, MI, USA
| | - Diego Velasquez
- Department of Periodontics and Oral Medicine, University of Michigan - School of Dentistry, 1011 North University Avenue, Ann Arbor, MI, USA.,Private Practice, 415 North Alloy Drive, Fenton, MI, 48430, USA
| | - Hom-Lay Wang
- Department of Periodontics and Oral Medicine, University of Michigan - School of Dentistry, 1011 North University Avenue, Ann Arbor, MI, USA
| | - Hsun-Liang Chan
- Department of Periodontics and Oral Medicine, University of Michigan - School of Dentistry, 1011 North University Avenue, Ann Arbor, MI, USA.
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Goyal L, Chawla K. Efficacy of microsurgery in treatment of localized or multiple gingival recession: A systematic review. J Oral Biol Craniofac Res 2021; 11:237-244. [PMID: 33665073 DOI: 10.1016/j.jobcr.2021.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 01/30/2021] [Accepted: 02/01/2021] [Indexed: 10/22/2022] Open
Abstract
Objective To address the clinical question whether microsurgery hold an advantage in terms of clinical and patient oriented outcome over conventional macrosurgical procedures in the treatment of gingival recession. Material and methods A Literature search on MEDLINE, SCOPUS, EMBASE (Excerpta Medica Database) via Ovid and Cochrane library was conducted in order to investigate clinical studies on efficacy of microsurgery in the treatment of localized or multiple gingival recession as compared to conventional macrosurgical procedures. Publications before May 2020 and grey literature was searched without any language restrictions. Primary outcome considered was change in recession depth and mean root coverage. Whereas, change in clinical attachment level, Change in keratinized tissue, patient oriented outcome like esthetics, pain and discomfort were the secondary outcome. Based on inclusion criteria ten studies were included in systematic review. Data was extracted and analyzed. Results and conclusion All the included studies showed improvement in the mean percentage of root coverage or mean root coverage (primary outcome) when microsurgical approach was used. Predictability of complete root coverage is better with microsurgical instrumentation but results are not statistically significant. As far as patient centered outcome is concerned, there is no evidence for recommendation of microsurgery.
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Affiliation(s)
- Lata Goyal
- Department of Dentistry (Periodontology), All India Institute of Medical Sciences, Bathinda, India
| | - Kirti Chawla
- Department of Periodontics, Jamia Millia Islamia, New Delhi, India
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Novaes AB, Palioto DB. Experimental and clinical studies on plastic periodontal procedures. Periodontol 2000 2019; 79:56-80. [PMID: 30892770 DOI: 10.1111/prd.12247] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We have compiled, in this Periodontology 2000 review, all Latin American literature on experimental and clinical studies of periodontal plastic procedures. The body of literature on this subject has led to a discussion of the features and treatment outcomes of root-coverage procedures. Over time, knowledge on periodontal plastic procedures has become less empirical and more supportive of the clinical management of recession-type defects. Gingival recession etiology, animal studies, free gingival grafts, pedicle flaps (semilunar, laterally positioned, and coronally positioned), and subepithelial connective tissue grafts are extensively reviewed. The use of allografts as an alternative to subepithelial connective tissue grafts, the treatment of multiple gingival recessions, and the rationale for use of guided tissue regeneration and enamel matrix derivative in plastic periodontal procedure is discussed. We also assess how smoking can affect the treatment outcomes in plastic surgery procedures. Minimally invasive procedures are of great value in improving the features of the final tissues. The following aspects identified in this compilation were of great interest: (a) some factors, anatomical in nature, favor the formation of root recessions, but it is the inflammatory process (caused by the presence of biofilm and/or by traumatic toothbrushing) that is responsible for the development of root recessions; and (b) pedicle flap procedures (especially the coronally positioned flap) are extremely versatile and have the most predictable outcome of all root-coverage procedures, especially when combined with subepithelial connective tissue grafting and/or allogeneic grafts. In summary: subepithelial connective tissue grafting is considered as the first option to augment gingival width and thickness, and it may provide better long-term results; the same principles of root-coverage procedures in individual sites appear be used in clinical practice also for multiple-recession type defects; an allograft is an efficient alternative to a subepithelial connective tissue graft and, when it is the treatment option of choice, the use of wide, extended flaps should be considered; because of the superiority of plastic periodontal procedures over guided tissue regeneration and the technical difficulty of the latter, guided tissue regeneration has become obsolete for root-coverage procedures; there is rather a large body of evidence attesting that smoking negatively influences root-coverage procedures, especially subepithelial connective tissue grafts; and minimally invasive techniques may be of great value for improving the results obtained with plastic periodontal procedures, but these techniques need to be better addressed in clinical trials, both in terms of the quality and quantity of the new tissue generated.
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Affiliation(s)
- Arthur Belém Novaes
- Department of Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Daniela Bazan Palioto
- Department of Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Chambrone L, Castro Pinto RCN, Chambrone LA. The concepts of evidence‐based periodontal plastic surgery: Application of the principles of evidence‐based dentistry for the treatment of recession‐type defects. Periodontol 2000 2019; 79:81-106. [DOI: 10.1111/prd.12248] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leandro Chambrone
- M.Sc. Dentistry Program Ibirapuera University Sao Paulo SP Brazil
- Unit of Basic Oral Investigation (UIBO) School of Dentistry El Bosque University Bogota Colombia
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AYDINYURT HS, TEKIN Y, ERTUGRUL AS. The effect of enamel matrix derivatives on root coverage: a 12-month follow-up of a randomized clinical trial. Braz Oral Res 2019; 33:e006. [DOI: 10.1590/1807-3107bor-2019.vol33.0006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 12/06/2018] [Indexed: 11/22/2022] Open
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Chambrone L, Salinas Ortega MA, Sukekava F, Rotundo R, Kalemaj Z, Buti J, Pini Prato GP. Root coverage procedures for treating localised and multiple recession-type defects. Cochrane Database Syst Rev 2018; 10:CD007161. [PMID: 30277568 PMCID: PMC6517255 DOI: 10.1002/14651858.cd007161.pub3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Gingival recession is defined as the oral exposure of the root surface due to a displacement of the gingival margin apical to the cemento-enamel junction and it is regularly linked to the deterioration of dental aesthetics. Successful treatment of recession-type defects is based on the use of predictable root coverage periodontal plastic surgery (RCPPS) procedures. This review is an update of the original version that was published in 2009. OBJECTIVES To evaluate the efficacy of different root coverage procedures in the treatment of single and multiple recession-type defects. SEARCH METHODS Cochrane Oral Health's Information Specialist searched the following databases: Cochrane Oral Health's Trials Register (to 15 January 2018), the Cochrane Central Register of Controlled Trials (CENTRAL; 2017, Issue 12) in the Cochrane Library (searched 15 January 2018), MEDLINE Ovid (1946 to 15 January 2018), and Embase Ovid (1980 to 15 January 2018). The US National Institutes of Health Ongoing Trials Register (ClinicalTrials.gov) and the World Health Organization International Clinical Trials Registry Platform were searched for ongoing trials (15 January 2018). No restrictions were placed on the language or date of publication when searching the electronic databases. SELECTION CRITERIA We included randomised controlled trials (RCTs) only of at least 6 months' duration evaluating recession areas (Miller's Class I or II ≥ 3 mm) and treated by means of RCPPS procedures. DATA COLLECTION AND ANALYSIS Screening of eligible studies, data extraction and risk of bias assessment were conducted independently and in duplicate. Authors were contacted for any missing information. We expressed results as random-effects models using mean differences (MD) for continuous outcomes and odds ratios (OR) for dichotomous outcomes with 95% confidence intervals (CI). We used GRADE methods to assess the quality of the body of evidence of our main comparisons. MAIN RESULTS We included 48 RCTs in the review. Of these, we assessed one as at low risk of bias, 12 as at high risk of bias and 35 as at unclear risk of bias. The results indicated a greater reduction in gingival recession for subepithelial connective tissue grafts (SCTG) + coronally advanced flap (CAF) compared to guided tissue regeneration with resorbable membranes (GTR rm) + CAF (MD -0.37 mm; 95% CI -0.60 to -0.13, P = 0.002; 3 studies; 98 participants; low-quality evidence). There was insufficient evidence of a difference in gingival recession reduction between acellular dermal matrix grafts (ADMG) + CAF and SCTG + CAF or between enamel matrix protein (EMP) + CAF and SCTG + CAF. Regarding clinical attachment level changes, GTR rm + CAF promoted additional gains compared to SCTG + CAF (MD 0.35; 95% CI 0.06 to 0.63, P = 0.02; 3 studies; 98 participants; low-quality evidence) but there was insufficient evidence of a difference between ADMG + CAF and SCTG + CAF or between EMP + CAF and SCTG + CAF. Greater gains in the keratinized tissue were found for SCTG + CAF when compared to EMP + CAF (MD -1.06 mm; 95% CI -1.36 to -0.76, P < 0.00001; 2 studies; 62 participants; low-quality evidence), and SCTG + CAF when compared to GTR rm + CAF (MD -1.77 mm; 95% CI -2.66 to -0.89, P < 0.0001; 3 studies; 98 participants; very low-quality evidence). There was insufficient evidence of a difference in keratinized tissue gain between ADMG + CAF and SCTG + CAF. Few data exist on aesthetic condition change related to patients' opinion and patients' preference for a specific procedure. AUTHORS' CONCLUSIONS Subepithelial connective tissue grafts, coronally advanced flap alone or associated with other biomaterial and guided tissue regeneration may be used as root coverage procedures for treating localised or multiple recession-type defects. The available evidence base indicates that in cases where both root coverage and gain in the width of keratinized tissue are expected, the use of subepithelial connective tissue grafts shows a slight improvement in outcome. There is also some weak evidence suggesting that acellular dermal matrix grafts appear as the soft tissue substitute that may provide the most similar outcomes to those achieved by subepithelial connective tissue grafts. RCTs are necessary to identify possible factors associated with the prognosis of each RCPPS procedure. The potential impact of bias on these outcomes is unclear.
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Affiliation(s)
| | | | | | | | | | - Jacopo Buti
- UCL Eastman Dental InstituteUnit of PeriodontologyLondonUK
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Patel C, Mehta R, Joshi S, Hirani T, Joshi C. Comparative Evaluation of Treatment of Localized Gingival Recessions with Coronally Advanced Flap Using Microsurgical and Conventional Techniques. Contemp Clin Dent 2018; 9:613-618. [PMID: 31772473 PMCID: PMC6868622 DOI: 10.4103/ccd.ccd_571_18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Coverage of gingival recession is a very precision-oriented procedure. Employment of operating microscope has proved to be a boon in various surgical procedures and therefore can have positive benefits on the outcome of a procedure. Aim The aim of this study is to find out whether the use of an operating microscope in the surgical treatment of Millers Class I and Class II gingival recession defects could improve the outcome in terms of root coverage and final tissue appearance compared to those done by the conventional technique. Materials and Methods This clinical study was carried out on ten patients with the presence of bilateral isolated gingival recession classified as Miller's Class I or Class II recession defect. The split-mouth design was used where coronally advanced flap with the placement of platelet-rich fibrin was done in defects in test (microsurgical) and control (conventional) groups. Various clinical parameters were recorded at baseline and then postoperatively at 3-months and 6-month intervals. Results The visual analog scale scores showed a statistically significant difference between scores while all other parameters had no statistically significant difference in intergroup comparison after 3 and 6 months. Conclusion While microscope permitted less traumatic and minimally invasive procedure, both groups showed convincing improvement in clinical parameters.
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Affiliation(s)
- Chandni Patel
- Department of Periodontics, Karnavati School of Dentistry, Gandhinagar, Gujarat, India
| | - Rupal Mehta
- Department of Periodontics, Karnavati School of Dentistry, Gandhinagar, Gujarat, India
| | - Surabhi Joshi
- Department of Periodontics, Karnavati School of Dentistry, Gandhinagar, Gujarat, India
| | - Tanvi Hirani
- Department of Periodontics, Karnavati School of Dentistry, Gandhinagar, Gujarat, India
| | - Chintan Joshi
- Department of Conservative and Endodontics, Karnavati School of Dentistry, Gandhinagar, Gujarat, India
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Evaluation of Laser Speckle Contrast Imaging for the Assessment of Oral Mucosal Blood Flow following Periodontal Plastic Surgery: An Exploratory Study. BIOMED RESEARCH INTERNATIONAL 2017; 2017:4042902. [PMID: 28232940 PMCID: PMC5292366 DOI: 10.1155/2017/4042902] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Accepted: 01/04/2017] [Indexed: 01/25/2023]
Abstract
The laser speckle contrast imaging (LSCI) is proved to be a reliable tool in flap monitoring in general surgery; however, it has not been evaluated in oral surgery yet. We applied the LSCI to compare the effect of a xenogeneic collagen matrix (Geistlich Mucograft®) to connective tissue grafts (CTG) on the microcirculation of the modified coronally advanced tunnel technique (MCAT) for gingival recession coverage. Gingival microcirculation and wound fluid were measured before and after surgery for six months at twenty-seven treated teeth. In males, the flap microcirculation was restored within 3 days for both grafts followed by a hyperemic response. During the first 8 days the blood flow was higher at xenogeneic graft comparing to the CTG. In females, the ischemic period lasted for 7–12 days depending on the graft and no hyperemic response was observed. Females had more intense and prolonged wound fluid production. The LSCI method is suitable to capture the microcirculatory effect of the surgical intervention in human oral mucosa. The application of xenogeneic collagen matrices as a CTG substitute does not seem to restrain the recovery of graft bed circulation. Gender may have an effect on postoperative circulation and inflammation.
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Expression of Pentraxin 3 and Thrombospondin 1 in Gingival Crevicular Fluid during Wound Healing after Gingivectomy in Postorthodontic Patients. J Immunol Res 2016; 2016:4072543. [PMID: 27403446 PMCID: PMC4923607 DOI: 10.1155/2016/4072543] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 04/17/2016] [Accepted: 05/10/2016] [Indexed: 12/16/2022] Open
Abstract
Background. Wound healing is a tissue repair process after an injury, and two of its main components are inflammation and angiogenesis, in which course a cascade of mediators is involved. The aim of this research was to evaluate the involvement of Pentraxin 3 and Thrombospondin 1 in wound healing after periodontal surgery (gingivectomy) for gingival overgrowth during orthodontic treatment with or without magnification devices, by assessing their levels in GCF. Methods. From 19 patients with gingival overgrowth as a result of fixed orthodontic treatment, the overgrown gingiva was removed by gingivectomy, from one half of the mandibular arch without magnification and from the other under magnification. Pentraxin 3 and Thrombospondin 1 were determined from gingival crevicular fluid by ELISA tests. Results. Statistically significant differences (p < 0.05) and correlations between levels of the two biomarkers were analyzed. Statistically significant differences were established between levels of the two biomarkers at different time points, with significant positive correlation at the point of 24 hours. Conclusions. Within the limitations of this study, the results seem to sustain the involvement of Pentraxin 3 and Thrombospondin 1 in the processes of inflammation and angiogenesis in wound healing of patients with postorthodontic gingivectomy. The dynamics of Pentraxin 3 and Thrombospondin 1 levels could suggest a reduced inflammation and a faster angiogenesis using microsurgery.
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Abstract
Objective: To evaluate whether microsurgery gains better result in root coverage compared to conventional surgical techniques. Methods: A number of databases were searched to identify eligible studies from January 1992 to January 2015. The following outcomes were evaluated: number of sites exhibiting complete root coverage and patients’ esthetic satisfaction. Results: Four Randomized Clinical Trials (RCTs) fulfilled the inclusion criteria. A pooled estimate from the two RCTs regarding sub-epithelial connective tissue grafts (SCTG) showed significant achievement in complete root coverage in the microsurgical group [relative risk (RR):1.63; 95% confidence interval (CI): 1.12 to 2.36; P=0.01] with acceptable heterogeneity. The other two studies were about coronal advanced flap (CAF) with enamel matrix derivative or free rotated papilla autograft and did not qualify for meta-analysis. Patients’ esthetic satisfaction was analyzed only by one study. Conclusions: Using microsurgical technique for treating gingival recessions may be effective in achieving complete root coverage for SCTG.
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Affiliation(s)
- Jian Kang
- Jian Kang, DDS, State Key Laboratory of Oral Diseases, Dept. of Periodontics, Dept. of Periodontics, Tianjin Stomatological Hospital, Tianjin, China. West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Shu Meng
- Shu Meng, DDS, State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Chunjie Li
- Chunjie Li, DDS, Department of Evidence-Based Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Zhenhua Luo
- Zhenhua Luo, DDS, State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Shujuan Guo
- Shujuan Guo, DDS, State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yafei Wu
- Yafei Wu, DDS, State Key Laboratory of Oral Diseases, Dept. of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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Jindal U, Pandit N, Bali D, Malik R, Gugnani S. Comparative evaluation of recession coverage with sub-epithelial connective tissue graft using macrosurgical and microsurgical approaches: A randomized split mouth study. J Indian Soc Periodontol 2015; 19:203-7. [PMID: 26015673 PMCID: PMC4439632 DOI: 10.4103/0972-124x.148641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 10/08/2014] [Indexed: 11/30/2022] Open
Abstract
Aims: The aim was to compare the recession coverage outcomes when done macrosurgically and microsurgically. Background: Increasing interest in esthetics and the related problems such as hypersensitivity and root caries have favored the development of many root coverage procedures. Recession coverage up to a certain extent has solved these problems, but these procedures need good maintenance after the surgery for long-term benefits. With increasing advances in the field of recession coverage, microscope has added another dimension in undertaking the surgical procedure. Materials and Methods: Thirty Miller's Class I and II recession were treated using the sub-epithelial connective tissue graft from the palate. In 15 sites, the graft was placed at the recipient site with unaided eye (Group A) and in other 15 sites the graft was placed using surgical microscope (Group B). Clinical evaluation was done at baseline, 12 weeks and 24 weeks postoperatively using plaque index, gingival index, vertical recession (VR), probing depth, clinical attachment level (CAL), width of attached gingiva, papilla height (PH) and width, malalignment index (MI) and esthetic appearance. Statistical Analysis Used: Paired and unpaired Student's t-test along with Wilcoxon Z-test were used to analyze the results and probability of P < 0.05 were accepted to reject the null hypothesis. Pearson correlation was used to correlate two parameters such as VR and CAL and MI and VR. Results: Both the techniques demonstrated predictable mean root coverage (Group A 61.78% and Group B 67.58%) at 6 months postsurgery. CAL gain was slightly better in Group B patients when compared to Group A patients. A moderate positive correlation for Group A while a mild correlation in Group B was seen between the MI and VR. Conclusion: The use of the microscope enhances the results, but obtaining an expertise in using needs a lot of practice. The periodontal healing by both techniques should be evaluated histologically.
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Affiliation(s)
- Uditi Jindal
- Department of Periodontology and Oral Implantology, DAV(C) Dental College and Hospital, Yamuna Nagar, Haryana, India
| | - Nymphea Pandit
- Department of Periodontology and Oral Implantology, DAV(C) Dental College and Hospital, Yamuna Nagar, Haryana, India
| | - Deepika Bali
- Department of Periodontology and Oral Implantology, DAV(C) Dental College and Hospital, Yamuna Nagar, Haryana, India
| | - Rajvir Malik
- Department of Periodontology and Oral Implantology, DAV(C) Dental College and Hospital, Yamuna Nagar, Haryana, India
| | - Shalini Gugnani
- Department of Periodontology and Oral Implantology, DAV(C) Dental College and Hospital, Yamuna Nagar, Haryana, India
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Nizam N, Bengisu O, Sönmez Ş. Micro- and macrosurgical techniques in the coverage of gingival recession using connective tissue graft: 2 years follow-up. J ESTHET RESTOR DENT 2014; 27:71-83. [PMID: 25393983 DOI: 10.1111/jerd.12124] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE The aim was to evaluate the clinical results of micro- and macrosurgical approaches in the coverage of gingival recession using connective tissue graft. MATERIAL AND METHODS Twenty-one teeth in microsurgical group (test group) and 21 in macrosurgical group (control group) were treated using coronally positioned flap and subgingival connective tissue graft. Recession depth (RD), recession width (RW), root surface area (RSA), keratinized tissue width (KTW), probing depth, clinical attachment level, pain level during healing, and aesthetic results were evaluated for 24 months. RESULTS RD, RW, and RSA were significantly lower at 1, 3, 6, and 24th months compared with baseline in both groups. RD was also significantly lower in the 1st month compared with 24th month in control group. RD and RSA at 24th month were significantly lower in microsurgical group. KTW significantly and similarly increased by 6th month in both groups. The pain levels in the donor and the recipient area decreased earlier in the microsurgical group, and aesthetic scores improved similarly in both groups. CONCLUSION A microsurgical approach to root coverage with gingival recession is likely to preserve the clinical outcomes longer than macrosurgical approach, at least for 24 months. Healing appears to be faster using microsurgery, but aesthetic outcomes are similar. CLINICAL SIGNIFICANCE This study evaluated the clinical results of microsurgical versus macrosurgical approaches to root coverage in cases of gingival recession. Based on the results of the study, pain levels in the donor and the recipient areas decreased earlier in the microsurgical group, and microsurgical approach resulted in significantly greater amount of root coverage at 24 months.
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Affiliation(s)
- Nejat Nizam
- Department of Periodontology, School of Dentistry, Ege University, Izmir, Turkey
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Pandey S, Mehta DS. Treatment of localized gingival recession using the free rotated papilla autograft combined with coronally advanced flap by conventional (macrosurgery) and surgery under magnification (microsurgical) technique: A comparative clinical study. J Indian Soc Periodontol 2014; 17:765-70. [PMID: 24554888 PMCID: PMC3917208 DOI: 10.4103/0972-124x.124500] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 09/24/2013] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND The aim of the present study was to evaluate and compare the conventional (macro-surgical) and microsurgical approach in performing the free rotated papilla autograft combined with coronally advanced flap surgery in treatment of localized gingival recession. MATERIALS AND METHODS A total of 20 sites from 10 systemically healthy patients were selected for the study. The selected sites were randomly divided into experimental site A and experimental site B by using the spilt mouth design. Conventional (macro-surgical) approach for site A and micro-surgery for site B was applied in performing the free rotated papilla autograft combined with coronally advanced flap. Recession depth (RD), recession width (RW) clinical attachment level (CAL.) and width of keratinized tissue (WKT.) were recorded at baseline, 3 months and 6 months post-operatively. RESULTS Both (macro- and microsurgery) groups showed significant clinical improvement in all the parameters (RD, RW, CAL and WKT). However, on comparing both the groups, these parameters did not reach statistical significance. CONCLUSION Both the surgical procedures were equally effective in treatment of localized gingival recession by the free rotated papilla autograft technique combined with coronally advanced flap. However, surgery under magnification (microsurgery) may be clinically better than conventional surgery in terms of less post-operative pain and discomfort experienced by patients at the microsurgical site.
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Affiliation(s)
- Suraj Pandey
- Department of Periodontics, Babu Banarasi College of Dental Sciences, BBD University, Lucknow, Uttar Pradesh, India
| | - D S Mehta
- Department of Periodontology and Implantology, Bapuji Dental College and Hospital, Davanagere, Karnataka, India
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Salhi L, Lecloux G, Seidel L, Rompen E, Lambert F. Coronally advanced flap versus the pouch technique combined with a connective tissuegraft to treat Miller's class I gingival recession: a randomized controlled trial. J Clin Periodontol 2014; 41:387- 95. [DOI: 10.1111/jcpe.12207] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/24/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Leila Salhi
- Faculty of Medicine; Department of Periodontology and Oral Surgery; University of Liege; Liege Belgium
| | - Geoffrey Lecloux
- Faculty of Medicine; Department of Periodontology and Oral Surgery; University of Liege; Liege Belgium
| | - Laurence Seidel
- Faculty of Medicine; Department of Biostatistics; University of Liege; Liege Belgium
| | - Eric Rompen
- Faculty of Medicine; Head of the Department of Periodontology and Oral Surgery; University of Liege; Liege Belgium
| | - France Lambert
- Faculty of Medicine; Department of Periodontology and Oral Surgery; University of Liege; Liege Belgium
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Roman A, Soancă A, Kasaj A, Stratul SI. Subepithelial connective tissue graft with or without enamel matrix derivative for the treatment of Miller class I and II gingival recessions: a controlled randomized clinical trial. J Periodontal Res 2013; 48:563-72. [DOI: 10.1111/jre.12039] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2012] [Indexed: 11/30/2022]
Affiliation(s)
- A. Roman
- Department of Periodontology; Iuliu Hatieganu University of Medicine and Pharmacy; Str. Victor Babes 8 400012 Cluj-Napoca Romania
| | - A. Soancă
- Department of Periodontology; Iuliu Hatieganu University of Medicine and Pharmacy; Str. Victor Babes 8 400012 Cluj-Napoca Romania
| | - A. Kasaj
- Department of Conservative Dentistry and Periodontology; Johannes Gutenberg University; Augustusplatz 2 Mainz Germany
| | - S.-I. Stratul
- Department of Periodontology; Victor Babes University of Medicine and Pharmacy; Bv. Revolutiei nr.9 300014 Timisoara Romania
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