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Prof. Lars Bergmans PhD

Belgium, Brasschaat
Prof. Lars Bergmans received his Degree in Dentistry (1998) and Master-after-Master in Endodontics (2003) from the Catholic University of Leuven (K.U.Leuven), Belgium. He obtained his PhD based on a thesis entitled: "X-ray microfocus computer tomography for non-destructive evaluation of the shaping ability of nickel-titanium rotary instruments and subsequent obturation" (promoter Prof. Paul Lambrechts, K.U.Leuven, 2006) and completed a postdoctoral research project on minimally invasive endodontology at the same university. Lars Bergmans worked in private practices in Brussels and Amsterdam. In 2011 he started a group practice in Brasschaat, Belgium. Besides his work in private practice Lars Bergmans is visiting professor at the K.U.Leuven and copromotor of a doctoral thesis on cervical root resorption (Drs. Athina Mavridou). He is (co-) author of several peer-reviewed publications together with the Leuven BIOMAT Research Cluster. Lars Bergmans gives lectures and hands-on courses both nationally and internationally.

Events

  
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7 Decades of Quintessence Publishing

10. Jan 2019 — 12. Jan 2019Estrel Convention Center
Speakers: Jiro Abe, Michèle Aerden, Wael Att, Stavros Avgerinos, Avijit Banerjee, Vesna Barac Furtinger, Klaus-Dieter Bastendorf, Lars Bergmans, Ashwini Bhalerao, Jaroslav Bláha, Sebastian Bürklein, Daniel Buser, Josette Camilleri, Sevim Canlar, Sandra Chmieleck, Bun San Chong, Victor Clavijo, Carsten Czerny, Bettina Dannewitz, Alessandro Devigus, Didier Dietschi, Irina Dragan, Daniel H.-J. Edelhoff, Peter Eickholz, Karim Elhennawy, Peter Engel, Wolfgang Eßer, Marco Esposito, Susanne Fath, Vincent Fehmer, Federico Ferraris, Stefan Fickl, Mauro Fradeani, Roland Frankenberger, Eiji Funakoshi, Petra Gierthmühlen, Christiane Gleissner, Florian Göttfert, Dennis Grosse, Galip Gürel, Christian Haase, Horst-Wolfgang Haase, Manuela Hackenberg, Jörg Haist, Anke Handrock, Arndt Happe, Karsten Heegewaldt, Rüdiger Henrici, Michael Hülsmann, Hajime Igarashi, Tomohiro Ishikawa, Hideaki Katsuyama, Kathryn Kell, Matthias Kern, Fouad Khoury, Marko Knauf, Ralf J. Kohal, Stefen Koubi, Fabian Langenbach, Henriette Terezia Lerner, Thomas Malik, Siegfried Marquardt, Henrike März, Kathleen Menzel, Helen Möhrke, Kotaro Nakata, Marc L. Nevins, Masayuki Okawa, Rebecca Otto, Mark Stephen Pace, Shanon Patel, Karin Probst, Domenico Ricucci, Katrin Rinke, Irena Sailer, Edgar Schäfer, Ralf Schäfermeier, Jan Schellenberger, Tom Schloss, Gottfried Schmalz, Devorah Schwartz-Arad, Frank Schwarz, Thomas A. Schwenk, Anton Sculean, Bernd Stadlinger, Athanasios Stamos, Ana Stevanovic, Masana Suzuki, Senichi Suzuki, Hiroyuki Takino, Sameh Talaat, Mitsuhiro Tsukiboshi, Hideaki Ueda, Istvan Urban, Luc W. M. van der Sluis, Eric Van Dooren, Bart Van Meerbeek, Paula Vassallo, Juliane von Hoyningen-Huene, Michael Walter, Siegbert Witkowski, Stefan Wolfart, Sylvia Wuttig, Masao Yamazaki, Maciej Zarow, Matthias Zehnder, Raquel Zita Gomes, Giovanni Zucchelli, Otto Zuhr, Bettina Zydatiß
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This author's journal articles

  
Quintessence International, 2/2007
PubMed ID (PMID): 17263153Pages 135-142, Language: EnglishTielemans, Sarah / Bergmans, Lars / Duyck, Joke / Naert, Ignace

Evaluation of a preparation depth controlling device: A pilot study

Objective: To define the reproducibility and accuracy of the Prepometer device (Hager & Werken) and to correlate the measured electrical resistance with the remaining dentin thickness. Method and Materials: In vivo standardized cavities were made on the buccal side in the cervical region of 12 intact teeth. Measurements with the Prepometer were completed before tooth extraction. After extraction, in vitro measurements of the remaining dentin thickness were performed using a µfocus-computerized tomography scanner. These in vitro scan data were compared with the in vivo measurements, and correlation coefficients calculated. The intra- and interinvestigator variability were defined, using a paired 2-tailed Student t test. The level of significance was set at 5%. Results: Although both the intra- and interinvestigator variability scored well, there was no clear correlation between the Prepometer measurements and the remaining dentin thickness. Because the device determines the electrical resistance of the dentin, which is related to dentin permeability, real remaining dentin thickness cannot be measured. A reasonable safety zone (3 of 12 teeth scored false negative and 1 of 12 teeth scored false positive) in terms of remaining dentin thickness was observed. Conclusions: The Prepometer, a device developed to screen dentin-surface permeability by measuring its electrical resistance, was shown to be reproducible in its use. However, electrical resistance was shown not to correlate with dentin thickness. Although the Prepometer might help to estimate the risk of pulp injury after tooth preparation, its effectiveness still remains to be proven in a randomized clinical trial. Keywords: dentin permeability, dentin thickness, microcomputerized tomography, Prepometer, pulp injury, tooth preparation
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The Journal of Adhesive Dentistry, 4/2005
DOI: 10.3290/j.jad.a10763Pages 321-329, Language: EnglishBergmans, Lars/Moisiadis, Panagiotis/De Munck, Jan/Van Meerbeek, Bart/Lambrechts, Paul

Effect of Polymerization Shrinkage on the Sealing Capacity of Resin Fillers for Endodontic Use

Purpose: Recently, highly flowable resin fillers have been proposed for filling root canals using a single-cone approach. The purpose of this study was to test the hypothesis that polymerization shrinkage, which is inherent to this type of filler, can break the close initial contact between the main core and the surrounding dentin even if root dentin infiltration has occurred. Materials and Methods: Twenty roots of anterior teeth were prepared chemomechanically and divided into 4 groups of 5 samples each. Groups 1 and 2: hydrophilic resin filler injected and spread, roots sectioned after setting; group 3: hydrophilic resin filler injected and spread, dental substrate dissolved after setting; group 4: hydrophobic resin sealer lentulo-spiraled and spread, roots sectioned after setting (as control). In groups 1, 2, and 3 the material was used following manufacturer's instructions. The section surfaces of groups 1 and 4, and the resin components of group 3 were processed for conventional FE-SEM. The section surfaces of group 2 were observed successively under environmental and high-vacuum conditions. Results: Microscopic examination of the resin-dentin interfaces of groups 1 and 2 showed the existence of resin-dentin interdiffusion zones (RDIZ); however, the close initial contact between the main core and the surrounding dentin was often lost. In group 3, resin tag morphology was well characterized. Identical morphological features were observed in the resin-dentin interfaces in group 4. Conclusion: Since the existence of resin tags did not exclude the existence of a gap between the main core and the adjacent RDIZ, our results confirmed the proposed hypothesis. Keywords: adaptation, filling, infiltration, root dentin, seal
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