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  • Quintessence Publishing United Kingdom
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Dr. Sérgio Kahn

Brazil, Florianópolis
 sergiokahn

Events

  
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SEPA 24 Bilbao

Clinical evidence based on scientific evidence29. May 2024 — 1. Jun 2024Bilbao, Spain
Speakers: Eduardo Anitua, Sofia Aroca, Serhat Aslan, Gustavo Avila-Ortiz, Juan Blanco Carrión, Gonzalo Blasi, Nagihan Bostanci, Iain L. C. Chapple, Jan Cosyn, Glécio Vaz de Campos, Luca De Stavola, Jan Derks, Vincent Fehmer, Elena Figuero, Sergio García, Alfonso L. Gil, Oscar Gonzalez-Martin, Adrian Guerrero, Sérgio Kahn, Alejandro Lanis, Antonio Liñares, Ferrán Llansana, Francesco Mangano, Dino Calzavara mantovani, Mauro Merli, Juan Mesquida, Alberto Monje, Eduardo Montero, Stefano Parma-Benfenati, Bjarni E. Pjetursson, Pablo Ramírez, Mariano Sanz, Ignacio Sanz Sànchez, Beatriz Solano Mendoza, Jacobo Somoza, Martina Stefanini, Maurizio S. Tonetti, Leonardo Trombelli, Ion Zabalegui
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The 9th World Dental Meeting in Japan 2023

No Dentistry, No Wellness!29. Sep 2023 — 1. Oct 2023Pacifico Yokohama Conference Center, Yokohama, Japan
Speakers: Alessandro Agnini, Andrea Mastrorosa Agnini, Wael Att, Gustavo Avila-Ortiz, Markus B. Blatz, Victor Clavijo, Karim Dada, Glécio Vaz de Campos, Vincent Fehmer, Naoki Hayashi, Mario Imburgia, Guillaume Jouanny, Sérgio Kahn, Bertrand Khayat, Sandra Khong Tai, Christopher Köttgen, Stefen Koubi, Tomas Linkevičius, Nazariy Mykhaylyuk, Ravindra Nanda, Andreas Nolte, Léon Parienté, Jose Manuel Reuss , Domenico Ricucci, Isabella Rocchietta, Irena Sailer, Todd R. Schoenbaum, Werner Schupp, Istvan Urban, Eric Van Dooren, Débora R. Vilaboa, Otto Zuhr
Quintessence Publishing Co. Ltd. Japan
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EuroPerio10

15. Jun 2022 — 18. Jun 2022Bella Center Copenhagen, Copenhagen, Denmark
Speakers: Mario Aimetti, Zvi Artzi, Serhat Aslan, Georgios Belibasakis, Florian Beuer, Juan Blanco Carrión, Michael M. Bornstein, Nagihan Bostanci, Philippe Bouchard, Darko Božić, Olivier Carcuac, Maria Clotilde Carra, Nelson Carranza, Iain L. C. Chapple, Pierpaolo Cortellini, Jan Cosyn, Mike Curtis, Francesco D'Aiuto, Bettina Dannewitz, Luca De Stavola, Jan Derks, Nikolaos Donos, Peter Eickholz, Bahar Eren Kuru, Ricardo Faria Almeida, Roberto Farina, Magda Feres, Elena Figuero, Dagmar Fosså Bunæs, Rok Gašperšič, William Giannobile, Cecilie Gjerde Gjengedal, Moshe Goldstein, Marjolaine Gosset, Klaus Gotfredsen, Filippo Graziani, Adrian Guerrero, George Hajishengallis, Hady Haririan, Lisa J. A. Heitz-Mayfield, Palle Holmstrup, Marc Hürzeler, Mark Ide, Søren Jepsen, Ronald Jung, Sérgio Kahn, Anhgela R. Kamer, Alpdogan Kantarci, Moritz Kebschull, Björn Klinge, Thomas Kocher, Odd Carsten Koldsland, Kenneth Kornman, Marja Laine, Markus Laky, Isabelle Laleman, Evanthia Lalla, France Lambert, Luca Landi, Niklaus P. Lang, Antonio Liñares, Tomas Linkevičius, Bruno Loos, Rodrigo Lopez, Eli Machtei, Aslan Mammadov, Mauro Merli, Andrea Mombelli, Eduardo Montero, Niki Moutsopoulos, Jose Nart, Gustavo G. Nascimento, Ian Needleman, Tiernan O'Brien, William Papaioannou, Panos N. Papapanou, Michael A. Pikos, Pawel Plakwicz, Constanza Pontarolo, Philip M. Preshaw, Marc Quirynen, Mia Rakic, Christoph Andreas Ramseier, Hélène Rangé, Papageorgiou Spyridon, Maurizio S. Tonetti, Leonardo Trombelli, Istvan Urban, Fridus van der Weijden, Fabio Vignoletti, Charalambos Vlachopoulos, Nicola West, Asaf Wilensky, Ion Zabalegui, Egija Zaura, Nicola Zitzmann, Giovanni Zucchelli, Otto Zuhr, Fardal Øystein
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European Federation of Periodontology (EFP)

This author's journal articles

  
International Journal of Periodontics & Restorative Dentistry, 6/2022
Online OnlyDOI: 10.11607/prd.5119Pages e175-e183, Language: EnglishAntunes, Karinne Bueno / Dias, Alexandra / Kahn, Sérgio / Schneider, Luiz Felipe Jochims / Cavalcante, Larissa Maria

Use of Botulinum Toxin Before Surgical Lip Repositioning: A Randomized Clinical Trial

This study aimed to determine whether administering botulinum toxin type A (BT) prior to surgery would stabilize surgical lip repositioning. A randomized controlled parallel-group clinical trial was performed. A total of 18 participants with excessive gingival display (EGD) were divided into two groups. For the test group (TG), BT was injected into the smile muscle locations 15 days before the surgical procedure. For the control group (CG), only lip repositioning surgery was performed. Gingival display (GD) and upper lip displacement (LD) were measured 3 and 6 months postoperatively. Data were submitted to ANOVA, Tukey, and t tests. For GD and LD, the changes were statistically significant between the measurements taken at the baseline, 3-month, and 6-month marks. The GD presented a reduction of 5.2 ± 1.1 mm in TG and 3.2 ± 1.4 mm in CG after 6 months. The LD measurements reduced 45% for TG and 26% for CG in 6 months. The injection of BT 15 days before lip repositioning surgery provided more stable results and effectively reduced the GD at 6 months.
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Quintessence International, 9/2021
DOI: 10.3290/j.qi.b1702145, PubMed ID (PMID): 34235906Pages 772-778, Language: EnglishKahn, Sérgio / Araújo, Ilana Tajra Evangelista / Dias, Alexandra Tavares / Souza, Alex Balduíno 
de / Chambrone, Leandro / Fernandes, Gustavo Vicentis de Oliveira

Histologic and histomorphometric analysis of connective tissue grafts harvested by the parallel incision method: 
a pilot randomized controlled trial comparing macro- and microsurgical approaches

Objective: The aim of this pilot randomized controlled trial was to assess the efficacy of macro- and microsurgical procedures in removing the epithelial tissue layer of subepithelial connective grafts (SCTGs) harvested by the parallel incision method. Method and materials: Sixteen patients were randomized to receive macro-SCTG harvesting (n = 10, control group) or micro-SCTG harvesting (n = 10, test group) by the parallel incision technique. Histologic and histomorphometric analysis of the SCTG evaluated the percentage remnant of epithelium and connective tissue. The presence of remnant portions of the epithelium was identified in eight samples (three in the macro- and five in the microsurgery groups). Results: Sixteen participants with 20 sites were included and 20 SCTG were collected and analyzed. SCTG harvested by microsurgical approaches displayed more portions of remnant epithelium compared to the conventional removal (50% versus 30%). There were no significant differences in mean remnant epithelial thickness for test (147.3 ± 89.3 μm) and control (209.0 ± 127.5 μm) groups (P = .57). Likewise, nonsignificant differences were identified in terms of the connective tissue thickness (macrosurgery: 1,511.0 ± 1,160.0 μm; microsurgery: 1,472.0 ± 1,063.0 μm) between groups (P = .96). Conclusion: The samples harvested by microsurgery had greater remaining epithelial portions than those harvested by macrosurgery, and similar connective layer thickness. Keywords: gingival recession, histology, microsurgery, plastic surgery
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International Journal of Periodontics & Restorative Dentistry, 3/2016
DOI: 10.11607/prd.2249, PubMed ID (PMID): 27100811Pages 408-415, Language: EnglishKahn, Sergio / Almeida, Renato Alves da Rocha / Dias, Alexandra Tavares / Rodrigues, Walmir Júnior de Pinho Reis / Barceleiro, Marcos Oliveira / Taba jr., Mario

Clinical Considerations on the Root Coverage of Gingival Recessions in Thin or Thick Biotype

Gingival biotype is a clinical term used to describe the thickness of the gingiva. It has been classified as being thick or thin and may be related to the clinical outcome of root coverage procedures. This study evaluated the impact of gingival biotype on the clinical outcome of root coverage procedures following subepithelial connective tissue graft plus coronally positioned flap. A total of 19 patients, 10 with thin and 9 with thick gingival biotype, were treated for localized Miller Class I or II gingival recessions. After 6 months, 14 patients achieved complete root coverage, 7 from each group. The overall mean pooled root coverage rate was 90.93%. The thin biotype cases yielded a reduced mean root coverage of 88.51% compared with 93.63% for patients who had the thick biotype classification. Although the thin gingival biotype may impair the clinical outcome of root coverage procedures, this limitation does not appear to have a strong influence on the success of the root coverage therapy when subepithelial connective tissue graft was associated with the coronal positioning of the flap.
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International Journal of Periodontics & Restorative Dentistry, 5/2012
PubMed ID (PMID): 22754905Pages 573-579, Language: EnglishEgreja, André Medina Coeli / Kahn, Sergio / Barceleiro, Marcos / Bittencourt, Sandro

Relationship Between the Width of the Zone of Keratinized Tissue and Thickness of Gingival Tissue in the Anterior Maxilla

The aim of this study was to evaluate whether there is a positive correlation between the width of the zone of gingival keratinized tissue and its thickness. Maxillary right canines, lateral incisors, and central incisors of 60 patients (30 men, 30 women) between the ages of 20 and 35 years were examined. Using an endodontic spacer with a rubber cursor and a digital caliper of 0.01-mm resolution, the values of the width of the zone of gingival keratinized tissue and gingival thickness were obtained. It was observed that the lateral incisor has the largest mean zone of gingival keratinized tissue (5.54 ± 1.09 mm), followed by the central incisor (4.62 ± 1.02 mm) and canine (4.32 ± 1.33 mm). The mean gingival thickness was greater in the central incisor (1.17 ± 0.20 mm), followed by the lateral incisor (1.04 ± 0.24 mm) and canine (0.87 ± 0.27 mm). No statistically significant difference was verified for the mean width of the zone of gingival keratinized tissue and gingival thickness between men and women. A positive correlation between gingival thickness and width of the zone of gingival keratinized tissue was observed in the maxillary canine (Pearson r = 0.398, P .05), lateral incisor (Pearson r = 0.369, P .05), and central incisor (Pearson r = 0.492, P .05). In patients 20 to 35 years of age, there was a positive correlation between gingival thickness and width of the zone of gingival keratinized tissue for the maxillary right canine, lateral incisor, and central incisor.
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International Journal of Periodontics & Restorative Dentistry, 4/2009
PubMed ID (PMID): 19639065Pages 445-449, Language: EnglishKahn, Sergio / Egreja, André Medina Coeli / Barceleiro, Marcos de Oliveira

Subepithelial Connective Tissue Graft Associated with Apicoectomy and Root-End Fillings in the Treatment of Deep Localized Gingival Recession with Apex Root Exposure: Case Report

Periodontal reconstructive surgery procedures seek to correct mucogingival defects, including gingival recession. This case report describes the use of a subepithelial connective tissue graft (SCTG) associated with root-end fillings using mineral trioxide aggregate (MTA) for the treatment of Miller Class II recession with root apex exposure. A partial-thickness double pedicle flap was made, followed by root preparation with curette and bur finishing. The exposed root apex was removed and the canal was filled with MTA. An SCTG taken from the palate was placed over the root surface and covered with the double pedicle flap. Twelve months after treatment, a reduction from 11 mm to 1 mm in gingival recession was achieved, covering 91% of the root. Repair in the periapical region was determined with radiographs. A 1.0-mm probing depth was measured, and no bleeding was observed on probing. There was an adequate keratinized tissue band, along with esthetic tissue contour and coloration. This case report serves as an example of how the grafting of subepithelial connective tissue can be successfully accomplished in tandem with MTA for the treatment of isolated Miller Class II gingival recession with root apex exposure.
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