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  1. Article: Infective endocarditis and oral health-a Narrative Review.

    Bumm, Caspar V / Folwaczny, Matthias

    Cardiovascular diagnosis and therapy

    2022  Volume 11, Issue 6, Page(s) 1403–1415

    Abstract: Infective endocarditis is a rare but usually severe and often fatal inflammatory disease affecting the endocardial surface, native and prosthetic valves or cardiac devices. Besides various staphylococcus species, oral viridans streptococci are known to ... ...

    Abstract Infective endocarditis is a rare but usually severe and often fatal inflammatory disease affecting the endocardial surface, native and prosthetic valves or cardiac devices. Besides various staphylococcus species, oral viridans streptococci are known to play a crucial role in the development of endocarditis, especially in patients with underlying cardiac conditions, such as valve replacement, congenital heart disease and a history of previous infective endocarditis. Particularly undetected persisting odontogenic infections and their secondary symptoms, as well as various therapeutic measures for their prevention and treatment, may lead to bacterial transfer from the oral cavity into the bloodstream, eventually enabling bacterial adherence to endocardial surfaces and thus promoting infective endocarditis. The administration of antibiotics prior to dental interventions in order to prevent this mechanism was initially recommended almost seventy years ago and has been the subject of research and intensive discussion ever since. Recently, numerous professional societies worldwide have published guidelines and updates on the prevention of endocarditis with divergent recommendations regarding the requirement of prophylactic antibiotic regimen prior to dental procedures. The objective of this article was therefore to review the currently available literature regarding oral health and infective endocarditis and to examine the rationale behind the inconsistent recommendation situation, critically.
    Language English
    Publishing date 2022-01-04
    Publishing country China
    Document type Journal Article ; Review
    ZDB-ID 2685043-6
    ISSN 2223-3660 ; 2223-3652
    ISSN (online) 2223-3660
    ISSN 2223-3652
    DOI 10.21037/cdt-20-908
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Book ; Thesis: Oberflächenvergütung von dentalen Keramikwerkstoffen mit Hilfe von 308 nm XeCl-Excimer-Laserstrahlung

    Folwaczny, Matthias

    2002  

    Author's details vorgelegt von Matthias Folwaczny
    Language German
    Size 101 S., Ill., graph. Darst.
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis München, Univ., Diss., 2002
    HBZ-ID HT013382606
    Database Catalogue ZB MED Medicine, Health

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  3. Article: Influence of DLP and SLA printer technology on the accuracy of surgical guides for implant dentistry in free-end situations.

    Le, Vinzenz / Keßler, Andreas / Folwaczny, Matthias

    International journal of computerized dentistry

    2023  Volume 26, Issue 3, Page(s) 217–226

    Abstract: Aim: The present in vitro study aimed to compare the accuracy of the implant position inserted by surgical guides manufactured by three different 3D printers (one SLA and two DLP) and a subtractive manufacturing technique for a free-end situation.: ... ...

    Abstract Aim: The present in vitro study aimed to compare the accuracy of the implant position inserted by surgical guides manufactured by three different 3D printers (one SLA and two DLP) and a subtractive manufacturing technique for a free-end situation.
    Materials and methods: Surgical guides were manufactured using three different 3D printers, one SLA printer (Form 2; Formlabs) and two DLP printers (D20 II; Rapid Shape, and SolFlex 350; W2P Engineering). Surgical guides manufactured using the conventional CAD/CAM-based subtractive method served as controls. In total, 48 surgical guides were printed and assessed for accuracy. The guides were used for the placement of implants at tooth position 37. The postoperative implant position was digitally scanned for metric comparison with the preoperatively planned implant position.
    Results: Significant differences were found when the SLA and DLP printers were compared. The SLA printer showed significantly lower accuracy in implant displacement at crest (P = 0.032) and angular displacement (P = 0.049) compared with the two DLP printers. The DLP printers showed comparable values to the control group. The results were within an acceptable clinical range.
    Conclusion: DLP technology seems to be superior to conventional SLA technology in terms of the accuracy of 3D-printed surgical guides when used for placement of implants in free-end situations.
    MeSH term(s) Humans ; Printing, Three-Dimensional ; Dental Implants ; Computer-Aided Design ; Technology ; Surgery, Computer-Assisted
    Chemical Substances Dental Implants
    Language English
    Publishing date 2023-02-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 1463532-x
    ISSN 1463-4201
    ISSN 1463-4201
    DOI 10.3290/j.ijcd.b3774115
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Book ; Online ; Thesis: Einsatz der Magnetresonanztomographie für die Detektion periapikaler Entzündungsprozesse und assoziierter mukosaler Pathologien

    Burian, Egon [Verfasser] / Folwaczny, Matthias [Akademischer Betreuer]

    2024  

    Author's details Egon Burian ; Betreuer: Matthias Folwaczny
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language German
    Publisher Universitätsbibliothek der Ludwig-Maximilians-Universität
    Publishing place München
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

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  5. Article ; Online: Cytotoxicity of 3D printed resin materials for temporary restorations on human periodontal ligament (PDL-hTERT) cells.

    Folwaczny, Matthias / Ahantab, Roya / Kessler, Andreas / Ern, Christina / Frasheri, Iris

    Dental materials : official publication of the Academy of Dental Materials

    2023  Volume 39, Issue 5, Page(s) 529–537

    Abstract: Objectives: Various dental resin materials are available for the fabrication of temporary restorations using modern additive printing methods. Albeit these materials are placed for several months in intimate contact with dental hard and soft tissues, ... ...

    Abstract Objectives: Various dental resin materials are available for the fabrication of temporary restorations using modern additive printing methods. Albeit these materials are placed for several months in intimate contact with dental hard and soft tissues, including the gingival crevice, there exists only insufficient evidence on the biocompatibility of these materials. This in vitro study aimed to delineate the biocompatibility of 3D printable materials on periodontal ligament cells (PDL-hTERTs).
    Methods: Samples of four dental resin materials for additive fabrication of temporary restorations using 3D printing (MFH, Nextdent; GC Temp, GC; Freeprint temp, Detax; 3Delta temp, Deltamed), one material for subtractive fabrication (Grandio disc, Voco) and one conventional temporary material (Luxatemp, DMG) were prepared with a standardized size according to the manufacturer's instructions. Human PDL-hTERTs were exposed to resin specimens or eluates of the material for 1, 2, 3, 6 and 9 days. For determination of cell viability, XTT assays were performed. In addition, the expression of the proinflammatory cytokines interleukin 6 and 8 (IL-6 and 8) was assessed in the supernatants with ELISA. Cell viability and the expression of IL-6 and 8 in presence of the resin material or their eluates was compared with untreated controls. Immunofluorescence staining for IL-6 and IL-8, as well as scanning electron microscopy of the discs after culturing, were performed. Differences between groups were analyzed with Student´s t-test for unpaired samples.
    Results: Compared to untreated control samples, the exposure against the resin specimen induced strong reduction of cell viability in case of the conventional material Luxatemp (p < 0.001) and the additive material 3Delta temp (p < 0.001) irrespective of the observation period. On the contrary, the presence of eluates of the various materials induced only minor changes in cell viability. Considering IL-6 (day 2: p = 0.001; day 6 and 9: p < 0.001) and IL-8 (day 1: p = 0.001; day 2, 3, 6, 9: p < 0.001) their expression was strongly reduced in presence of the eluate of Luxatemp. Except for IL-6 at day 1 and 6 also the material 3Delta temp caused significant reduction of both proinflammatory mediators at any time point.
    Significance: The conventional material Luxatemp and the additive material 3Delta temp appear to severely affect cell viability when in direct contact with PDL-hTERTs. The other tested materials of this new category of additive materials and the subtractive material Grandio seem to induce only minor changes in direct contact with these cells. Therefore, they could serve as a viable alternative in the fabrication of temporary restorations.
    MeSH term(s) Humans ; Interleukin-8 ; Periodontal Ligament ; Interleukin-6 ; Materials Testing ; Printing, Three-Dimensional
    Chemical Substances luxatemp ; Interleukin-8 ; Interleukin-6
    Language English
    Publishing date 2023-04-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 605995-8
    ISSN 1879-0097 ; 0109-5641
    ISSN (online) 1879-0097
    ISSN 0109-5641
    DOI 10.1016/j.dental.2023.04.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: The molecular weight of hyaluronic acid influences metabolic activity and osteogenic differentiation of periodontal ligament cells.

    Frasheri, Iris / Tsakiridou, Nikoletta Dimitra / Hickel, Reinhard / Folwaczny, Matthias

    Clinical oral investigations

    2023  Volume 27, Issue 10, Page(s) 5905–5911

    Abstract: Objective: While HA is present naturally in periodontal tissues, its molecular weight can vary widely in vivo. The objective of this study was to directly compare the biological reactions of periodontal ligament cells to four distinct molecular weights ... ...

    Abstract Objective: While HA is present naturally in periodontal tissues, its molecular weight can vary widely in vivo. The objective of this study was to directly compare the biological reactions of periodontal ligament cells to four distinct molecular weights of hyaluronic acid (HA).
    Materials and methods: Immortalized human periodontal ligament cells (PDL-hTERT) were cultured for 21 days in culture medium alone (control) or enriched with osteogenic supplements (OS group). Other 4 experimental groups were cultured in OS medium with the addition of HA with different molecular weights (HMW, MMW, LMW, and ULMW). The cell morphology was examined daily. WST1 assays were performed to evaluate metabolic activity. Von Kossa staining and calcium deposition assay were used to analyze osteogenic differentiation and mineralization.
    Results: Cell morphology remained unaltered in all groups. Cells stimulated with OS alone or with the addition of hyaluronan showed all the typical microscopic appearance of osteogenic differentiation. Metabolic activity increased in all groups over time. Hyaluronan stimulated greater metabolic activity than the control group, with LMW HA and MMW HA showing the most significant increase. All groups showed mineral deposits and calcium deposition after 21 days of stimulation.
    Conclusion: Our results suggest that hyaluronan can promote metabolic activity and mineralization of PDL-hTERT cells, with LMW HA being the most effective.
    Clinical relevance: These results shed light on how the various molecular weight fractions of HA promote tissue regeneration and repair, as well as help to identify an optimal molecular weight range for this application in periodontal tissues.
    MeSH term(s) Humans ; Periodontal Ligament ; Osteogenesis/physiology ; Hyaluronic Acid/pharmacology ; Molecular Weight ; Calcium ; Cell Proliferation ; Cell Differentiation ; Cells, Cultured
    Chemical Substances Hyaluronic Acid (9004-61-9) ; Calcium (SY7Q814VUP)
    Language English
    Publishing date 2023-08-17
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1364490-7
    ISSN 1436-3771 ; 1432-6981
    ISSN (online) 1436-3771
    ISSN 1432-6981
    DOI 10.1007/s00784-023-05202-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Book ; Thesis: Einfluß von 308-nm-Excimer-Laserbestrahlung auf Bakterien

    Folwaczny, Matthias

    1995  

    Author's details Matthias Folwaczny
    Language German
    Size 92 S. : Ill., graph. Darst.
    Document type Book ; Thesis
    Thesis / German Habilitation thesis München, Techn. Univ., Diss., 1995
    HBZ-ID HT007145661
    Database Catalogue ZB MED Medicine, Health

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  8. Book ; Online ; Thesis: Biokompatibilität und Zytotoxizität von 3D-gedruckten zahnärztlichen Werkstoffen

    Netolitzky, Katharina [Verfasser] / Folwaczny, Matthias [Akademischer Betreuer]

    2023  

    Author's details Katharina Netolitzky ; Betreuer: Matthias Folwaczny
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language German
    Publisher Universitätsbibliothek der Ludwig-Maximilians-Universität
    Publishing place München
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

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  9. Book ; Online ; Thesis: Postoperative Dimensionsstabilität der relativen Augmentation des zahnlosen Alveolarfortsatzes durch eine externe Sinusbodenelevation mit einem xenogenen Knochenaufbaumaterial (BioOss®)

    Cramer, Isabelle [Verfasser] / Folwaczny, Matthias [Akademischer Betreuer]

    2023  

    Author's details Isabelle Cramer ; Betreuer: Matthias Folwaczny
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language German
    Publisher Universitätsbibliothek der Ludwig-Maximilians-Universität
    Publishing place München
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

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  10. Article ; Online: In-vitro cytocompatibility of self-adhesive dual-curing resin cements on human mesenchymal stem cells (hMSC) and periodontal ligament cells (PDL-hTERT).

    Frasheri, Iris / Grimm, Alexandra / Ern, Christina / Hickel, Reinhard / Folwaczny, Matthias

    Dental materials : official publication of the Academy of Dental Materials

    2022  Volume 38, Issue 2, Page(s) 376–383

    Abstract: Objectives: Self-adhesive dual cured resin cements provide easier clinical application than conventional resin cements but release higher amounts of unreacted monomers, potentially affecting their biocompatibility. This study aimed to compare the ... ...

    Abstract Objectives: Self-adhesive dual cured resin cements provide easier clinical application than conventional resin cements but release higher amounts of unreacted monomers, potentially affecting their biocompatibility. This study aimed to compare the cytotoxic effects of self-adhesive dual cured resin cements with two conventional resin cements.
    Methods: Samples of four resin cements, two self-adhesive dual cured cements (group A: RelyX Unicem, group B: SmartCem), and two conventional resin cements (group C: Panavia 2.0, group D: Variolink Esthetic DC) were prepared with a similar dimension under standardized polymerization conditions and stored in water. For each material 18 samples were used and cell cultures of human mesenchymal stem cells (hMSCs) or periodontal ligament cells (PDL-hTERT) were added under appropriate conditions. One experimental group (group E) was left untreated as control. A cell viability WST test, was performed in each experimental group at day 1, 7, 14 and 21. Moreover, microscopic examination of cells was performed using cell viability staining.
    Results: Viability of both cell types as determined by WST test was significantly impaired at all time periods by the four different cement materials compared to the untreated control. Comparison between the four materials revealed different inhibition of the viability of both, PDL-hTERT and hMSC cells (group C > group B > group A > group D; p < 0.0001).
    Significance: All resin-based cements caused significant impairment of cell viability, reflecting considerable cytotoxicity. Variolink caused significantly smaller changes of viability than the other tested materials.
    MeSH term(s) Humans ; Materials Testing ; Mesenchymal Stem Cells ; Periodontal Ligament ; Polymerization ; Resin Cements
    Chemical Substances Resin Cements
    Language English
    Publishing date 2022-01-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 605995-8
    ISSN 1879-0097 ; 0109-5641
    ISSN (online) 1879-0097
    ISSN 0109-5641
    DOI 10.1016/j.dental.2021.12.020
    Database MEDical Literature Analysis and Retrieval System OnLINE

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