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PD Dr. Maximiliane Amelie Schlenz

Germany, Gießen

2010-2015 Studium der Zahnheilkunde an der Justus-Liebig-Universität Gießen. 12/2015 Approbation als Zahnärztin. 2016 Vorbereitungsassistentin in Zahnarztpraxis. Seit 2016 Wissenschaftliche Mitarbeiterin/Zahnärztin der Poliklinik für Zahnärztliche Prothetik der Justus-Liebig-Universität Gießen/Universitätsklinikums Gießen und Marburg. 2018 Dissertation zum Thema "Langzeitstabilität monolithischer CAD/CAM-Materialien". 2017-2019 Berufsbegleitender Masterstudiengang "Zahnmedizinische Prothetik" der Universität Greifswald.

Events

  
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Einsatz, Auswahl und klinische Bewährung von keramischen Restaurationsmaterialien

26. Jun 2024, 18:00 — 20:00   (MEZ)Zoom, Germany
Speakers: Maximiliane Amelie Schlenz
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Ivoclar Vivadent GmbH
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Deutscher Zahnärztetag 2019

8. Nov 2019 — 9. Nov 2019Congress Center Messe Frankfurt
Speakers: Karl-Ludwig Ackermann, Sarah Al-Maawi, Kurt Werner Alt, Jassin Arnold, Thomas Attin, Mustafa Ayna, Anna Greta Barbe, Ingo Baresel, Jens Baresel, Tobias Bauer, Ursula Becker, Wilfried Beckmann, Christoph Benz, Lisa Bitterich, Dirk Bleiel, Uwe Blunck, Martin Boost, Andreas Braun, Anne Bredel-Geissler, Wolfgang Buchalla, Egon Burian, Sebastian Bürklein, Iain L. C. Chapple, Wolfgang Christian, Fabian Cieplik, Bettina Dannewitz, Monika Daubländer, Sybille David-Hebgen, Isabel Deckwer, James Deschner, Annika Döding, Christof Dörfer, Heike Dyrna, Norbert Engel, Peter Engel, Susanne Fath, Michael Frank, Roland Frankenberger, Rene Franzen, Cornelia Frese, Tobias Fretwurst, Michael Gahlert, Roland Garve, Werner Geurtsen, Shahram Ghanaati, Christiane Gleissner, Ulrike Gonder, Werner Götz, Dominik Groß, Knut A. Grötz, Martin Guffart, Norbert Gutknecht, Cornelius Haffner, Thorsten Halling, Frederic Hermann, Carlos Herrera-Vizcaino, Tim Hilgenfeld, Jürgen Hoffmann, Martin Hoffmann, Fabian Huettig, Alfons Hugger, Christine Hutschenreuter, Bruno Imhoff, Silke Jacker-Guhr, Søren Jepsen, A. Rainer Jordan, Alexander Jürchott, Bärbel Kahl-Nieke, Peer W. Kämmerer, Philipp Kanzow, Nele Kettler, Christian Kirschneck, Lydia Kogler, Bernd Kordaß, Franz-Josef Kramer, Norbert Krämer, Felix Krause, Matthis Krischel, Joachim Krois, Christina Kühne, Conrad Kühnöl, Bernd Lapatki, Silke Lehmann-Binder M.Sc., Christian Leonhardt, Ivona Leventic, Daniel Lindel, Jörg Alexander Lisson, Ulrike Lübbert, Elmar Ludwig, Anne-Katrin Lührs, Michael Lüpke, Frank Georg Mathers, Wibke Merten, Georg Meyer, Wolfram Misselwitz, Karin Mölling, Mhd Said Mourad, Dietmar Friedrich Müller, Moritz Mutschler, Katja Nickel, Nicole Nicklisch, Ina Nitschke, Olaf Oberhofer, Karina Obreja, Dietmar Oesterreich, Rebecca Otto, Simon Peroz, Peter Pospiech, Florian Probst, Monika Probst, Michael Rädel, Sven Reich, Katharina Reichenmiller, Katharina Reinecke, Daniel R. Reißmann, Bernd Reiss, Stefan Ries, Christiane Rinnen, Katharina Röher, Jerome Rotgans, Uwe Rudol, Michael Rumpf, Heidrun Schaaf, Claudia Schaller, Karina Schick, Ulrich Schiffner, Maximiliane Amelie Schlenz, Alexander Schmidt, Mathias Schmidt, Andrea-Maria Schmidt-Westhausen, Julian Schmoeckel, Wolfgang Schneider, Sigmar Schnutenhaus, Holger Schön, Andreas Schulte, Nelly Schulz-Weidner, Karola Schulze, Ralf Schulze, Falk Schwendicke, Thomas A. Schwenk, Andreas Simka, Ralf Smeets, Önder Solakoglu, David Sonntag, Hansmartin Spatzier, Benedikt Spies, Norbert Staab, Sabine Steding, Angela Stillhart, Marcus Stoetzer, Hendrik Terheyden, Andrea Thumeyer, Marin Vodanovic, Kai Voß, Maximilian Voß, Wolfgang Wahlster, Michael Walter, Sandra Weber, Almut Johanna Weigel, Paul Weigl, Michael Weiss, Hans-Jürgen Wenz, Johannes-Simon Wenzler, Christian Wesemann, Jens Westemeier, Lotta Westphal, Matthias Widbiller, Annette Wiegand, Horst Willeweit, Karl Frederick Wilms, Sandra Windecker, Michael M. Wolf, Anne Wolowski, Bernd Wöstmann, Sylvia Wuttig
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Deutscher Zahnärztetag 2018

MISSERFOLGE - erkennen, beherrschen, vermeiden9. Nov 2018 — 10. Nov 2018Congress Center Messe Frankfurt
Speakers: Karl-Ludwig Ackermann, Sarah Al-Maawi, Bilal Al-Nawas, Kurt Werner Alt, Anna Greta Barbe, Tobias Bauer, Daniel Bäumer, Marco Baz Bartels, Grietje Beck, Katrin Bekes, Christoph Benz, Dirk Bleiel, Johannes Boesch, Martin Boost, Wolfgang Buchalla, Oskar Bunz, Fabian Cieplik, Monika Daubländer, Sybille David-Hebgen, Andreas Dehler, Renate Deinzer, Sonja H. M. Derman, Konstanze Diekmeyer, Ingmar Dobberstein, Heike Dyrna, Thomas Eger, Guido Elsäßer, Anne Sophie Engel, Peter Engel, Norbert Enkling, Susanne Fath, Stefan Fickl, Michael Frank, Roland Frankenberger, Rene Franzen, Kerstin Galler, Carolina Ganß, Roland Garve, Christian Ralf Gernhardt, Werner Geurtsen, Shahram Ghanaati, Petra Gierthmühlen, Christiane Gleissner, Steffani Görl, Werner Götz, Susanne Grässel, Dominik Groß, Stefan Grümer, Claus Grundmann, Martin Guffart, Heinz-Michael Günther, Norbert Gutknecht, Peter Hahner, Elmar Hellwig, Christian Henrici, Katrin Hertrampf, Fabian Huettig, Michael Hülsmann, Bruno Imhoff, Holger Jentsch, A. Rainer Jordan, Ana Elisa Kauling, Moritz Kebschull, Christian Kirschneck, Joachim Klimek, Andrea Klink, Thomas Klinke, Birte Koch, Thomas Kocher, Eva Köllensperger, Heike Maria Korbmacher-Steiner, Bernd Kordaß, Hannah Kottmann, Pablo Krämer-Fernandez, Gabriel Krastl, Birgit Krause, Till Kreutzer, Conrad Kühnöl, Stefanie Kurzschenkel, Thorsten Kuypers, Günter Lauer, Hans-Christoph Lauer, Elfi Laurisch, Tina Lawall, Karl Martin Lehmann, Silke Lehmann-Binder M.Sc., Dirk Leisenberg, Ulrike Lübbert, Michael Lüpke, Thomas Malik, Jutta Margraf-Stiksrud, Lorenz Meinel, Gudrun Mentel, Wibke Merten, Louisa Mewes, Johanna Isabel Moosmüller, Martin U. Müller, Wolfgang Müller, Nicole Nicklisch, Ina Nitschke, Michael J. Noack, Marina Nörr-Müller, Karina Obreja, Dietmar Oesterreich, Puria Parvini, Ingrid Peroz, Waldemar Petker, Oksana Petruchin, Andree Piwowarczyk, Peter Pospiech, Peter Proff, Sven Reich, Katharina Reichenmiller, Katharina Reinecke, Bernd Reiss, Svenja Rink, Christiane Rinnen, Jerome Rotgans, Didem Sahin, Sonja Sälzer, Petra Santander, Heidrun Schaaf, Jürgen Schäffer, Elisabeth Schiffner, Ulrich Schiffner, Markus Schlee, Maximiliane Amelie Schlenz, Peter Schmidt, Andrea-Maria Schmidt-Westhausen, Claas Ole Schmitt, Sigmar Schnutenhaus, Jörg Schröder, Gerd Schröter, Andreas Schulte, Philipp Schwaab, Frank Schwarz, Falk Schwendicke, Clemens Schwerin, Sinan Sen, Önder Solakoglu, Hansmartin Spatzier, Christian H. Splieth, Norbert Staab, Bernd Stadlinger, Sabine Steding, Marcus Stoetzer, Giorgio Tabanella, Gisela Tascher, Hendrik Terheyden, Valentina A. Tesky, Jan Tetsch, Juliane von Hoyningen-Huene, Maximilian Voß, Michael Walter, Alexander Welk, Dietmar Weng, Hans-Jürgen Wenz, Jens Westemeier, Lotta Westphal, Annette Wiegand, Karl Frederick Wilms, Michael M. Wolf, Diana Wolff, Anne Wolowski, Johann-Dietrich Wörner, Sylvia Wuttig, Mohamed Younis, Stefan Zimmer, Lisa Zumpe
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This author's journal articles

  
International Journal of Computerized Dentistry, Pre-Print
ScienceDOI: 10.3290/j.ijcd.b4494409, PubMed ID (PMID): 3782353912. Oct 2023,Pages 1-31, Language: EnglishSchlenz, Maximiliane Amelie / Schulz-Weidner, Nelly / Olbrich, Max / Buchmann, Darlene / Wöstmann, Bernd

Insights on the digitalisation of dental practices: A cross-sectional pilot study in Hesse

Aim: Even though today, many fields in dentistry allow digital processes, analogue procedures are still widely used. This cross-sectional pilot study aimed to survey insights on the digitalisation of dental practices using the example of Hesse. Materials and Methods: Between April and June 2022, 4840 active practicing dentists registered by the State Dental Association of Hesse were invited via e-mail to fill out an online questionnaire regarding their technical requirements in dental practice, dental treatment procedures, and attitude towards digitalisation in dentistry. Demographic questions were asked. Besides descriptive statistics, correlations were analyzed (P < 0.05). Result: Questionnaires of 937 dentists (279 female, 410 male, four inter/divers, 244 no answer; mean age of 51.4 ± 10.4 years) were examined representing a respond rate of 19.36%. In the area of practice administration and dental radiography, the majority of the dentists surveyed is already working digitally, which is predominantly assessed as a positive development. Already one third of the respondents state that they use an intraoral scanner for dental treatments, but the indication is mainly limited to smaller restorations. However, many dentists rate the use of social media accounts and telemedicine rather negative. Conclusion: Within the limitation of this pilot study, many processes especially in dental treatments are still analogue. However, 60% of the participants plan digitalisation of their dental practices within the next five years, which indicates a clear shift from analogue to digital dentistry. Keywords: Analog-Digital Conversion, CAD/CAM, Dental Practice Pattern, Digital Technology, Intraoral Scanner, Organisation and Administration, Real World Data on Dentistry, Surveys and Questionnaires
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The International Journal of Prosthodontics, Pre-Print
DOI: 10.11607/ijp.8843, PubMed ID (PMID): 3853614822. Mar 2024,Pages 1-19, Language: EnglishSchmidt, Alexander / Berschin, Cara / Wöstmann, Bernd / Schlenz, Maximiliane Amelie

Update on the Accuracy of Digital Implant Impressions in 2023: A Coordinate-Based Analysis

Purpose: To update data on the transfer accuracy of digital implant impressions by using a coordinate-based analysis, latest intraoral scanners (IOSs) were investigated in an established clinical close model set-up. Materials and Methods: An implant master model (IMM) of the maxilla with four implants in the posterior area (#14/#24 and #16/#26) and a reference cube was scanned with four different IOS (i700 (Medit), Primescan (Dentsply Sirona), Trios 4 and Trios 5 (3Shape) ten times each. Datasets were compared with a reference dataset of IMM that was generated with x-ray computed tomography in advance. 3D deviations for the implant-abutment-interface points (IAIPs) were calculated. Statistical analysis was performed by multifactorial ANOVA (p < .05). Results: Overall deviations for trueness (mean) ± precision (SD) of the IAIPs ranged from 88±47 μm for the Primescan, followed by 112±57 μm for the i700, 121±42 μm for the Trios 4 and 124±43 μm for the Trios 5 with decreasing accuracy along the scan path. For trueness, one significant difference between the Primescan and the T4 was detected for one implant position. For precision, no significant differences were noticed. Conclusions: Although the latest IOS showed a significant improvement in transfer accuracy, the accumulating deviation along the scan path is not yet resolved. Considering the Trios system, the innovation seems to be limited as no improvement could be detected between Trios 4 and 5.
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Implantologie, 3/2021
Pages 243-255, Language: GermanWöstmann, Bernd / Schmidt, Alexander / Schlenz, Maximiliane Amelie

Digitale Abformung in der Implantologie

Insbesondere in der Implantologie eröffnet der intraorale Scan, neben der alleinigen Funktion einer Abformung, die Möglichkeit zur Implementierung neuer Behandlungskonzepte. Bereits in der Beratungs- und Planungsphase können so in Verbindung mit dreidimensionalen Röntgendaten Möglichkeiten, Grenzen und Risiken der Implantatversorgung erläutert und in einem prothetisch-chirurgischen Behandlungskonzept festgelegt werden, welches zu vorhersagbareren Behandlungsergebnissen führt. Jedoch müssen die heute noch bestehenden Limitationen der Ganzkieferversorgungen in Bezug auf die dreidimensionale Übertragung der Implantatposition von der Mundhöhle auf ein Modell beachtet werden, weshalb indikationsabhängig auch kombiniert digital-analoge Versorgungskonzepte in Betracht gezogen werden sollten. Durch die kontinuierliche Weiterentwicklung der Scansysteme ist jedoch zukünftig damit zu rechnen, dass auch hier die digitale Abformung die etablierten analogen Behandlungsverfahren ersetzen wird. Manuskripteingang: 18.06.2021, Annahme: 11.08.2021 Keywords: digitale Abformung, Implantatabformung, konventionelle Abformung, intraorale Scanner, Abformgenauigkeit, digitale Implantatplanung
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International Journal of Computerized Dentistry, 2/2021
SciencePubMed ID (PMID): 34085501Pages 157-164, Language: English, GermanSchmidt, Alexander / Billig, Jan-Wilhelm / Schlenz, Maximiliane Amelie / Wöstmann, Bernd

Do different methods of digital data analysis lead to different results?

Aim: Dental research involves variations between actual and reference datasets of master models to determine the metric accuracy through transfer accuracy tests. Various methods of measurement are used to analyze the results, which are often subjected to direct comparisons. Hence, the aim of the present study was to analyze the influence and effect on results of different methods of digital data analysis, being coordinate-based analysis (CBA) and best-fit superimposition analysis. Materials and methods: A model with four implants and a reference cuboid was digitized through computed tomography (CT), which served as the master model. Ten implant impressions were made using a Trios (3Shape) intraoral scanner, and three different scan bodies (nt-trading, Kulzer, and Medentika) were used. The deviations between the master model and the digital impressions were analyzed using CBA and best-fit superimposition analysis. Statistical analysis was performed using SPSS 25. Results: The deviations in the CBA and best-fit superimposition analysis ranged from 0.088 ± 0.012 mm (mean ± SE; Medentika, 14) to 0.199 ± 0.021 mm (Kulzer, 26), and from 0.042 ± 0.010 mm (Medentika, 16) to 0.074 ± 0.006 mm (Kulzer, 16), respectively. Significant differences were observed between the implant positions in the CBA and the digital measurements at each implant position, whereas the best-fit analysis showed no significant difference between the scan bodies and implant positions. Conclusion: CBA displays an advantage over best-fit superimposition analysis in the detection of possible influencing factors for primarily scientific purposes. However, a global analysis and visualization of angles and torsions is difficult, for which a best-fit evaluation is needed. However, a best-fit analysis better represents the clinical try-in. It is associated with the risk that possible disturbing factors and resulting errors might be leveled out and their identification camouflaged. Keywords: dimensional measurement accuracy, accuracy, trueness, precision, intraoral scanner, digital dentistry, implant impression, best-fit analysis
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Team-Journal, 5/2020
AusbildungPages 276-281, Language: GermanSchmidt, Alexander / Schlenz, Maximiliane Amelie / Wöstmann, Bernd

Situationsabformung mit Alginaten – "Ist es denn wirklich ein alter Hut?"

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Quintessenz Zahnmedizin, 2/2020
ProthetikPages 150-159, Language: GermanWöstmann, Bernd / Schlenz, Maximiliane Amelie

Digitale, digitalisierte oder konventionelle Abformung?

Heutzutage gibt es die Möglichkeit, Zahnersatz auf der Grundlage einer konventionellen oder einer digitalen Abformung herzustellen. Auch ein kombinierter Einsatz beider Techniken ist durch das laborseitige Einscannen eines Gipsmodells realisierbar. In Bezug auf die Genauigkeit führt die digitale Abformung insbesondere bei kleineren Restaurationen zu ähnlichen Ergebnissen wie die konventionelle Abformung. Hingegen ist bei der Ganzkieferabformung zu beachten, dass die Exaktheit zwar zur Anfertigung von Hilfsmitteln wie Modellen, Schienen oder Bohrschablonen ausreicht, jedoch langspannige Implantatversorgungen heute besser noch mittels herkömmlicher Techniken abgeformt werden sollten. Neben der alleinigen Abformung bieten einige Hersteller bereits weitere Funktionen wie digitales Monitoring oder Kariesdiagnostik an. In diesem Bereich ist zukünftig sicher noch mehr zu erwarten, so dass die digitale Abformung im Vergleich zur konventionellen einen zusätzlichen Informationsgewinn bringt. Keywords: Digitale Abformung, optische Abformung, konventionelle Abformung, intraorale Scanner, Abformgenauigkeit
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Quintessence International, 9/2019
DOI: 10.3290/j.qi.a42778, PubMed ID (PMID): 31286119Pages 706-711, Language: EnglishSchlenz, Maximiliane Amelie / Schmidt, Alexander / Wöstmann, Bernd / Rehmann, Peter

Clinical performance of computer-engineered complete dentures: a retrospective pilot study

Objectives: The aim of this retrospective pilot study was to analyze the clinical performance of computer-engineered complete dentures (CECDs) in edentulous patients regarding survival and maintenance. Method and materials: For this retrospective analysis, data from 10 patients who received CECD treatment in each arch (Digital Denture, Ivoclar Vivadent) between 2015 and 2016 were analyzed. The following aspects were assessed: number of appointments required for treatment, number of interventions during the initial (≤ 4 weeks after insertion) and functional periods (> 4 weeks after insertion), and survival. Additionally, whether these aspects were influenced by function or esthetics, the arch, or recall participation was assessed. Poisson regression models were used for the statistical analysis (P .05). Results: All CECDs survived the observation period of 2.54 ± 0.48 years. More than four appointments were required for treatment (mean ± standard deviation, 4.6 ± 0.7), mainly for esthetic concerns. An average of 1.7 ± 0.05 appointments during the initial period and 2.07 ± 0.32 during the functional period were noted as a consequence of functional concerns. During both periods, the major reason for intervention was removal of pressure spots. Relining was required in 40% of the CECDs, and fracture of the denture base occurred in two CECDs. Conclusions: Within the limitations of this retrospective pilot study, the CECDs showed acceptable clinical performance in terms of survival and maintenance. Nevertheless, transferring more information about the patient from the dental practice to the dental laboratory might reduce the number of appointments for treatment and avoid technical complications such as fractures of the denture base. Keywords: CAD/CAM complete denture, computer-engineered complete dentures, maintenance, survival
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The International Journal of Prosthodontics, 6/2019
DOI: 10.11607/ijp.6210, PubMed ID (PMID): 31664270Pages 530-532, Language: EnglishSchlenz, Maximiliane Amelie / Skroch, Marianne / Schmidt, Alexander / Rehmann, Peter / Wöstmann, Bernd

Influence of Different Luting Systems on Microleakage of CAD/CAM Composite Crowns: A Pilot Study

Purpose: To investigate whether (1) the curing mode and (2) the use of the corresponding or noncorresponding crown luting system have an impact on the microleakage of computer-aided design/ computer-assisted manufacture (CAD/CAM) composite crowns after chewing simulation. Materials and Methods: Two CAD/CAM composite blocks (Lava Ultimate [n = 20] and LuxaCam Composite [n = 20]) and their luting systems and curing modes (light curing [LC] or chemical curing [CC]) were investigated. A dye penetration test was used to detect the presence of microleakage. Results: Independently of the luting system, the LC groups showed a significantly lower microleakage compared to the CC groups (P .05). Furthermore, the CC groups exhibited a reduction of microleakage if the CAD/CAM block and luting system were from the same manufacturer. Conclusion: For the CC mode, the corresponding block and luting system should be used.
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International Journal of Computerized Dentistry, 2/2019
PubMed ID (PMID): 31134219Pages 131-138, Language: German, EnglishSchlenz, Maximiliane Amelie / Schmidt, Alexander / Wöstmann, Bernd / Ruf, Sabine / Klaus, Katharina

In vitro comparison of analog versus digital impressions of the periodontally compromised dentition focused on interdental areas

Aim: For orthodontic aligner treatment, excellent full-arch impressions with correctly displayed interdental areas (IAs) are required. To analyze the ability of impression taking of the IAs in periodontally compromised dentitions, two intraoral scanning systems and one conventional impression technique were investigated in vitro under standardized testing conditions. Materials and methods: A total of 60 impressions of the maxilla and mandible were taken from a periodontally compromised test model (A-PB) with three different techniques (n = 20): One conventional impression (EXA'lence) (CVI) and two digital impressions with the intraoral scanners Trios III (3Shape) (TIO) and True Definition (3M ESPE) (TRU). Standard tessellation language (STL) datasets were generated for TIO and TRU, whereas type IV dental stone casts were manufactured for CVI. The casts were then digitized with a laboratory scanner (ATOS). The percentage of displayed IAs in relation to the complete IA was calculated for each IA using evaluation software (GOM Inspect). Finally, the data were subjected to the median test. Result: TRU showed a significantly higher percentage of displayed IAs compared with the other two methods (P 0.05). Only a few IAs were shown in CVI. TIO showed significantly better results compared with CVI, although the results were not as good as those of TRU. Conclusion: Within the limitations of this in vitro study, intraoral scanners - and especially the one based on active wavefront sampling (AWS) technology (as for TRU) - can be recommended for the reproduction of wide IAs (undercuts) in periodontally compromised patients. Keywords: intraoral scanners, periodontally compromised dentition, full-arch impression, aligner treatment, orthodontics, digital dentistry
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