@article{MTMT:34771068, title = {Push-Out Bond Strength of Glass Fiber Endodontic Posts with Different Diameters}, url = {https://m2.mtmt.hu/api/publication/34771068}, author = {Rajnics, Zsolt and Pammer, Dávid and Kőnigné Péter, Anikó and Turzó, Kinga Mónika and Marada, Gyula and Radnai, Márta}, doi = {10.3390/ma17071492}, journal-iso = {MATERIALS}, journal = {MATERIALS}, volume = {17}, unique-id = {34771068}, abstract = {(1) Background: The retention of intraradicular posts is an important factor for the prognosis of endodontically treated teeth. The purpose of this study was to evaluate the push-out bond strength (PBS) of the posts relating to their diameter and region of the root. (2) Methods: A total of 40 premolar teeth (decoronated and root canal-filled) were divided into four groups (n = 10). After post-space preparation, different sizes (1.0, 1.2, 1.5, and 2.0 mm) of glass fiber posts were luted with resin cement into the root canals. After placement, 2 mm thick slices were cut from the roots according to their apical, middle, and coronal regions (n = 116). Push-out tests were carried out in a universal testing machine on each slice. A statistical evaluation of the data was applied. (3) Results: When comparing the diameter, the 2.0 mm posts had the highest PBS (111.99 ± 10.40 N), while the 1.0 mm posts had the lowest PBS (99.98 ± 8.05 N). Divided by the surface of the bonded area, the average PBS value was the highest for the 1.0 mm posts (18.20 ± 1.67 MPa) and the lowest for the 2.0 mm posts (12.08 ± 1.05 MPa). (4) Conclusions: Within the limitations of the study, when comparing the regions of the roots, no significant differences were found among the PBS values of the three regions (p = 0.219). When comparing the diameters, significant differences were shown between the PBS values of the four groups (p = 0.023 and p = 0.003, respectively).}, year = {2024}, eissn = {1996-1944} } @article{MTMT:34499791, title = {Effect of different parameters utilized for image guided endodontic root canal preparation on temperature changes: an in vitro study}, url = {https://m2.mtmt.hu/api/publication/34499791}, author = {Rajnics, Zsolt and Mandel, Iván and Nagy, Ákos Károly and Turzó, Kinga Mónika and Mühl, Attila and Marada, Gyula}, doi = {10.1186/s12903-023-03799-x}, journal-iso = {BMC ORAL HEALTH}, journal = {BMC ORAL HEALTH}, volume = {24}, unique-id = {34499791}, issn = {1472-6831}, abstract = {Navigated endodontics is a cutting-edge technology becoming increasingly more accessible for dental practitioners. Therefore, it is necessary to clarify the ideal technical parameters of this procedure to prevent collateral damage of the surrounding tissues. There is a limited number of studies available in published scientific literature referencing the possible collateral thermal damage due to high-speed rotary instruments used in guided endodontic drilling. The aim of our study was to investigate the different drilling parameters and their effect upon the temperature elevations measured on the outer surface of teeth during guided endodontic drilling.In our in vitro study, 72 teeth with presumably narrow root canals were prepared using a guided endodontic approach through a 3D-printed guide. Teeth were randomly allocated into six different test groups consisting of 12 teeth each, of which, four parameters affecting temperature change were investigated: (a) access cavity preparation prior to endodontic drilling, (b) drill speed, (c) cooling, and (d) cooling fluid temperature. Temperature changes were recorded using a contact thermocouple electrode connected to a digital thermometer.The highest temperature elevations (14.62 °C ± 0.60 at 800 rpm and 13.76 °C ± 1.24 at 1000 rpm) were recorded in the groups in which drilling was performed without prior access cavity preparation nor without a significant difference between the different drill speeds (p = 0.243). Access cavity preparation significantly decreased temperature elevations (p < 0.01) while drilling at 800 rpm (8.90 °C ± 0.50) produced significantly less heating of the root surface (p < 0.05) than drilling at 1000 rpm (10.09 °C ± 1.32). Cooling significantly decreased (p < 0.01) temperature elevations at a drill speed of 1000 rpm, and cooling liquid temperatures of 4-6 °C proved significantly (p < 0.01) more beneficial in decreasing temperature elevations (1.60 °C ± 1.17) than when compared with room temperature (21 °C) liquids (4.01 °C ± 0.22).Based on the results of our study, guided endodontic drilling at drill speeds not exceeding 1000 rpm following access cavity preparation, with constant cooling using a fluid cooler than room temperature, provides the best results in avoiding collateral thermal damage during navigated endodontic drilling of root canals.}, year = {2024}, eissn = {1472-6831}, orcid-numbers = {Mühl, Attila/0000-0003-2581-0002} } @article{MTMT:34104302, title = {Does implant drill design influence the accuracy of dental implant placement using static computer-assisted implant surgery? An in vitro study}, url = {https://m2.mtmt.hu/api/publication/34104302}, author = {Takács, Anna and Marada, Gyula and Turzó, Kinga Mónika and Nagy, Ákos Károly and Németh, Orsolya and Mijiritsky, Eitan and Kivovics, Márton and Mühl, Attila}, doi = {10.1186/s12903-023-03297-0}, journal-iso = {BMC ORAL HEALTH}, journal = {BMC ORAL HEALTH}, volume = {23}, unique-id = {34104302}, issn = {1472-6831}, abstract = {The purpose of this in vitro study was to compare the accuracy of implant placement in model surgeries according to the design of the drills (straight drills or step drills) used to finalize the implant bed during pilot-guided static computer-assisted implant surgery (sCAIS).}, year = {2023}, eissn = {1472-6831}, orcid-numbers = {Németh, Orsolya/0000-0002-4714-1463; Kivovics, Márton/0000-0003-0728-7027; Mühl, Attila/0000-0003-2581-0002} } @article{MTMT:33215364, title = {Surface Free Energy and Composition Changes and Ob Cellular Response to CHX-, PVPI-, and ClO2-Treated Titanium Implant Materials}, url = {https://m2.mtmt.hu/api/publication/33215364}, author = {Masa, Roland and Pelsőczi-Kovács, István and Aigner, Zoltán and Oszkó, Albert Zoltán and Turzó, Kinga Mónika and Ungvári, Krisztina}, doi = {10.3390/jfb13040202}, journal-iso = {J FUNCT BIOMATER}, journal = {JOURNAL OF FUNCTIONAL BIOMATERIALS}, volume = {13}, unique-id = {33215364}, abstract = {The study evaluated the interaction of a titanium dental implant surface with three different antibacterial solutions: chlorhexidine, povidone-iodine, and chlorine dioxide. Implant surface decontamination is greatly challenging modern implant dentistry. Alongside mechanical cleaning, different antibacterial agents are widely used, though these could alter implant surface properties. Commercially pure (CP) grade 4 titanium (Ti) discs were treated with three different chemical agents (chlorhexidine 0.2% (CHX), povidone-iodine 10% (PVPI), chlorine dioxide 0.12% (ClO2)) for 5 min. Contact angle measurements, X-ray photoelectron spectroscopy (XPS) analysis, and cell culture studies were performed. Attachment and proliferation of primary human osteoblast cells were investigated via MTT (dimethylthiazol–diphenyl tetrazolium bromide), alamarBlue, LDH (lactate dehydrogenase), and fluorescent assays. Contact angle measurements showed that PVPI-treated samples (Θ = 24.9 ± 4.1) gave no difference compared with controls (Θ = 24.6 ± 5.4), while CHX (Θ = 47.2 ± 4.1) and ClO2 (Θ = 39.2 ± 9.8) treatments presented significantly higher Θ values. All samples remained in the hydrophilic region. XPS analysis revealed typical surface elements of CP grade 4 titanium (Ti, O, and C). Both MTT and alamarBlue cell viability assays showed similarity between treated and untreated control groups. The LDH test revealed no significant difference, and fluorescent staining confirmed these results. Although there was a difference in surface wettability, a high proliferation rate was observed in all treated groups. The in vitro study proved that CHX, PVPI, and ClO2 are proper candidates as dental implant decontamination agents.}, year = {2022}, eissn = {2079-4983}, orcid-numbers = {Oszkó, Albert Zoltán/0000-0002-6215-2451} } @article{MTMT:33194417, title = {Mechanical Characterization and Structural Analysis of Latex-Containing and Latex-Free Intermaxillary Orthodontic Elastics}, url = {https://m2.mtmt.hu/api/publication/33194417}, author = {Gurdán, Zsuzsanna and Turzó, Kinga Mónika and Lőrinc, Laura and Szabó, Péter and Karádi, Kristóf Kálmán and Lukács, András Szilárd and Told, Roland and Kardos, Kinga and Maróti, Péter}, doi = {10.3390/polym14214488}, journal-iso = {POLYMERS-BASEL}, journal = {POLYMERS}, volume = {14}, unique-id = {33194417}, abstract = {Class II malocclusion is one of the most common dental anomalies and the use of intermaxillary elastomers is the standard method in its treatment. However, orthodontic elastics cannot exert continuous force over a period of time due to force degradation. Our goal was to mechanically characterize the different types of elastomers during static and cyclic loads, based on uniform methodology and examine the morphological changes after loading. Ten types of latex-containing and four latex-free intermaxillary elastics were examined from six different manufacturers. To determine the mechanical characteristics of the elastomers, tensile tests, cyclical tensile fatigue tests and 24 h relaxation tests were performed, and the elastics were also subjected to scanning electron microscopy (SEM) and Raman spectroscopy. Regardless of the manufacturer, the latex-containing elastomers did not show significant differences in the percentage of elongation at break during the tensile test. Only one type of latex-containing elastomer did not tear during the 24 h cyclical fatigue test. Fatigue was confirmed by electron microscopy images, and the pulling force reduced significantly. During the force relaxation test, only one latex-free ligature was torn; the force degradation was between 7.8% and 20.3% for latex ligatures and between 29.6% and 40.1% for latex-free elastomers. The results showed that dynamic loading was more damaging to ligatures than static loading, latex-containing elastomers were more resistant than latex-free elastics, and which observation could have clinical consequences or a potential effect on patient outcome.}, year = {2022}, eissn = {2073-4360}, orcid-numbers = {Szabó, Péter/0000-0003-0827-3583; Kardos, Kinga/0000-0002-9440-4457; Maróti, Péter/0000-0001-7538-0675} } @article{MTMT:33117585, title = {Energy drinks alter the surface morphology and roughness of composites, fissure sealants and titanium: An in vitro study}, url = {https://m2.mtmt.hu/api/publication/33117585}, author = {Kolarovszki, Béla and Sándor, Alíz and Szabó, Péter and Heszlerné Kopniczky, Judit and Frank, Dorottya and Nagy, Ákos Károly and Turzó, Kinga Mónika}, doi = {10.1016/j.heliyon.2022.e10764}, journal-iso = {HELIYON}, journal = {HELIYON}, volume = {8}, unique-id = {33117585}, abstract = {Objectives The influence of energy drinks on dental materials are relatively under addressed. Our aim was to investigate the effect of energy drinks on dental materials used intraorally in young individuals. Commonly used preventive, restorative, and orthodontic materials were tested in vitro. Methods The effect of two commercially available energy drinks (HELL, BURN) was investigated on different dental materials: machined, anodized Titanium (grade 5: Ti6Al4V) and composites (Grandio Seal, VOCO; Filtek Z250, 3M ESPE; Estelite SQ, TOKUYAMA). The roughness (Ra) and morphological changes were examined by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Results AFM and SEM revealed significant differences in the Ra and morphology of the samples. AFM results for the machined and anodized titanium samples showed that the two energy drinks modified the surface roughness differently; BURN changed the roughness of machined samples significantly, while anodized discs were not altered significantly by the two energy drinks. In case of composite samples there was no significant difference for the Estelite SQ, relative low differences for the Filtek Z250 and significant changes in the morphology and surface roughness of Grandio Seal. Significance On all tested materials, changes in the surface roughness and morphology were more or less detected, proving energy drinks do in fact have a harmful effect. It can be concluded that material erosion depends on the material composition and particle arrangement. Where the surface is characterized by a regular, uniform particle arrangement, energy drinks are less able to influence the roughness, while for samples where the surface is rich in aggregates, the material erodes the surface much more easily.}, keywords = {MORPHOLOGY; ROUGHNESS; composite; burn; TITANIUM; fissure sealant; Energy drinks; HELL}, year = {2022}, eissn = {2405-8440}, orcid-numbers = {Szabó, Péter/0000-0003-0827-3583} } @article{MTMT:33053775, title = {Comparison of surface aspects of turned and anodized titanium dental implant, or abutment material for an optimal soft tissue integration}, url = {https://m2.mtmt.hu/api/publication/33053775}, author = {Mühl, Attila and Szabó, Péter and Homokiné Krafcsik, Olga and Aigner, Zoltán and Heszlerné Kopniczky, Judit and Nagy, Ákos Károly and Marada, Gyula and Turzó, Kinga Mónika}, doi = {10.1016/j.heliyon.2022.e10263}, journal-iso = {HELIYON}, journal = {HELIYON}, volume = {8}, unique-id = {33053775}, abstract = {Soft tissue integration of dental implants lags behind natural biological integration of teeth mainly because of non-optimal surface features. Peri-implant infections resulting in loss of supporting bone jeopardize the success of implants. Our aim was to compare an anodized surface design with a turned one for a more optimal surface.Morphological and chemical structures of turned and anodized Ti surfaces (grade 5: Ti6Al4V) discs were examined by scanning electron microscopy (SEM-EDS), energy dispersive X-ray spectroscopy (EDS), and atomic force microscopy (AFM). The hydrophilic or hydrophobic features of the surfaces were determined by dynamic contact angle measurement.SEM and AFM revealed significant differences in the morphology and roughness (Ra) of the samples. Anodized discs presented a granular structure, while turned ones had circular grooves. The roughness was significantly higher for the anodized samples compared to the turned ones. XPS and EDS confirmed typical elements for both Ti6Al4V samples. Due to anodization, the amount of Ti (IV) had increased and Ti (III) had decreased in the thicker oxide layer. Anodized samples resulted in a more hydrophilic surface than the turned ones.The results suggest that the tested anodized samples present optimal surface characteristics to be used as abutment material for an optimal soft tissue integration.}, year = {2022}, eissn = {2405-8440}, orcid-numbers = {Mühl, Attila/0000-0003-2581-0002; Szabó, Péter/0000-0003-0827-3583; Homokiné Krafcsik, Olga/0000-0003-3432-8736; Heszlerné Kopniczky, Judit/0000-0003-1096-2345} } @article{MTMT:31382301, title = {Photocatalytic enhancement of antibacterial effects of photoreactive nanohybrid films in an in vitro Streptococcus mitis model}, url = {https://m2.mtmt.hu/api/publication/31382301}, author = {Venkei, Annamária and Ungvári, Krisztina and Eördegh, Gabriella and Janovák, László and Zsoldiné Urbán, Edit and Turzó, Kinga Mónika}, doi = {10.1016/j.archoralbio.2020.104837}, journal-iso = {ARCH ORAL BIOL}, journal = {ARCHIVES OF ORAL BIOLOGY}, volume = {117}, unique-id = {31382301}, issn = {0003-9969}, abstract = {Bacterial adhesion and colonization on implanted devices are major etiological factors of peri-implantitis in dentistry. Enhancing the antibacterial properties of implant surfaces is a promising way to reduce the occurrence of inflammations. In this in vitro study, the antibacterial potential of two nanocomposite surfaces were investigated, as possible new materials for implantology.The structural and photocatalytic properties of the TiO2 and Ag-TiO2 (with 0.001 wt% plasmonic Ag content) photocatalyst containing polymer based composite layers were also studied and compared to the unmodified standard sandblasted and acid etched Ti discs (control). The presence of visible light induced reactive oxygen species was also verified and quantified by luminol based chemiluminescence (CL) probe method. The discs with adhered Streptococcus mitis were illuminated for 5, 10 and 15 min. The antibacterial effect was determined by the metabolic activities of the adhered and proliferated bacterial cells and protein assay at each time point.The Ag-TiO2 containing surfaces with obvious photocatalytic activity eliminated the highest amount of the metabolically active bacteria, compared to the control discs in the dark, after 15 min illumination.The plasmonic Ag-enhanced and illuminated surface exhibits significantly better antibacterial activity under harmless visible light irradiation, than the control Ti or TiO2 containing copolymer. The studied surface modifications could be promising for further, more complex investigations associated with dental research on infection prevention in connection with oral implantation.}, keywords = {NANOPARTICLES; ANTIMICROBIAL ACTIVITY; Photocatalysis; Peri-implantitis; Pioneer colonizer}, year = {2020}, eissn = {1879-1506}, orcid-numbers = {Venkei, Annamária/0000-0002-1893-7526; Eördegh, Gabriella/0000-0002-3707-3583; Janovák, László/0000-0002-2066-319X; Zsoldiné Urbán, Edit/0000-0002-9602-7552} } @article{MTMT:31240664, title = {A simplified in vitro model for investigation of the antimicrobial efficacy of various antiseptic agents to prevent peri-implantitis}, url = {https://m2.mtmt.hu/api/publication/31240664}, author = {Venkei, Annamária and Eördegh, Gabriella and Turzó, Kinga Mónika and Zsoldiné Urbán, Edit and Ungvári, Krisztina}, doi = {10.1556/030.2020.01080}, journal-iso = {ACTA MICROBIOL IMMUNOL HUNG}, journal = {ACTA MICROBIOLOGICA ET IMMUNOLOGICA HUNGARICA}, volume = {67}, unique-id = {31240664}, issn = {1217-8950}, abstract = {The biofilm formation by oral bacteria on the implant surface is one of the most remarkable factors of peri-implant infections, which may eventually lead to bone resorption and loss of the dental implant. Therefore, the elimination of biofilm is an essential step for the successful therapy of implant-related infections. In this work we created a basic in vitro model to evaluate the antibacterial effect of three widely used antiseptics.Commercially pure (CP4) titanium sample discs with sand blasted, acid etched, and polished surface were used. The discs were incubated with mono-cultures of Streptococcus mitis and Streptococcus salivarius. The adhered bacterial biofilms were treated with different antiseptics: chlorhexidine-digluconate (CHX), povidone-iodine (PI), and chlorine dioxide (CD) for 5 min and the control discs with ultrapure water. The antibacterial effect of the antiseptics was tested by colorimetric assay.According to the results, the PI and the CD were statistically the most effective in the elimination of the two test bacteria on both titanium surfaces after 5 min treatment time. The CD showed significant effect only against S. salivarius.Based on our results we conclude that PI and CD may be promising antibacterial agents to disinfecting the peri-implant site in the dental practice.}, keywords = {TITANIUM; Peri-implantitis; Streptococcus salivarius; Antimicrobial agents; Streptococcus mitis}, year = {2020}, eissn = {1588-2640}, pages = {127-132}, orcid-numbers = {Venkei, Annamária/0000-0002-1893-7526; Eördegh, Gabriella/0000-0002-3707-3583; Zsoldiné Urbán, Edit/0000-0002-9602-7552} } @CONFERENCE{MTMT:30421511, title = {Titán felszínnel kölcsönható KRSR peptid molekuladinamikai vizsgálata}, url = {https://m2.mtmt.hu/api/publication/30421511}, author = {Tarjányi, Tamás and Bogár, Ferenc and Turzó, Kinga Mónika and Minárovits, János and Tóth, Zsolt}, booktitle = {Translational interactive hands-on training and conference on epithelial ion transport including two symposia: "Antibacterial and mucolytic therapy in cystic fibrosis" and "Research in oral cavity – from basic science to clinical use"}, unique-id = {30421511}, year = {2018}, pages = {86}, orcid-numbers = {Tarjányi, Tamás/0000-0002-9481-5977; Bogár, Ferenc/0000-0002-0611-1452} }