TY - JOUR AU - Rajnics, Zsolt AU - Pammer, Dávid AU - Kőnigné Péter, Anikó AU - Turzó, Kinga Mónika AU - Marada, Gyula AU - Radnai, Márta TI - Push-Out Bond Strength of Glass Fiber Endodontic Posts with Different Diameters JF - MATERIALS J2 - MATERIALS VL - 17 PY - 2024 IS - 7 PG - 10 SN - 1996-1944 DO - 10.3390/ma17071492 UR - https://m2.mtmt.hu/api/publication/34771068 ID - 34771068 N1 - Faculty of Medicine, Dental School, University of Pécs, Pécs, 7623, Hungary Department of Materials Science and Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Budapest, 1111, Hungary Institute of Bioanalysis, Medical School, University of Pécs, Pécs, 7624, Hungary Department of Prosthodontics, Faculty of Dentistry, University of Szeged, Szeged, 6720, Hungary Export Date: 22 April 2024 Correspondence Address: Rajnics, Z.; Faculty of Medicine, Hungary; email: rajnics.zsolt@pte.hu AB - (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). LA - English DB - MTMT ER - TY - JOUR AU - Rajnics, Zsolt AU - Mandel, Iván AU - Nagy, Ákos Károly AU - Turzó, Kinga Mónika AU - Mühl, Attila AU - Marada, Gyula TI - Effect of different parameters utilized for image guided endodontic root canal preparation on temperature changes: an in vitro study JF - BMC ORAL HEALTH J2 - BMC ORAL HEALTH VL - 24 PY - 2024 IS - 1 PG - 6 SN - 1472-6831 DO - 10.1186/s12903-023-03799-x UR - https://m2.mtmt.hu/api/publication/34499791 ID - 34499791 AB - 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. LA - English DB - MTMT ER - TY - JOUR AU - Takács, Anna AU - Marada, Gyula AU - Turzó, Kinga Mónika AU - Nagy, Ákos Károly AU - Németh, Orsolya AU - Mijiritsky, Eitan AU - Kivovics, Márton AU - Mühl, Attila TI - Does implant drill design influence the accuracy of dental implant placement using static computer-assisted implant surgery? An in vitro study JF - BMC ORAL HEALTH J2 - BMC ORAL HEALTH VL - 23 PY - 2023 IS - 1 PG - 8 SN - 1472-6831 DO - 10.1186/s12903-023-03297-0 UR - https://m2.mtmt.hu/api/publication/34104302 ID - 34104302 N1 - Department of Community Dentistry, Semmelweis University, Szentkirályi utca 40, Budapest, 1088, Hungary Dental School, Medical Faculty, University of Pécs, Tüzér utca 1, Pécs, 7623, Hungary Department of Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, School of Medicine, Tel-Aviv University, Tel Aviv, 64239, Israel Goldschleger School of Dental Medicine, Faculty of Medicine, Tel-Aviv University, Tel Aviv, 39040, Israel Cited By :1 Export Date: 9 April 2024 Correspondence Address: Kivovics, M.; Department of Community Dentistry, Szentkirályi utca 40, Hungary; email: kivovics.marton@semmelweis.hu AB - 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). LA - English DB - MTMT ER - TY - JOUR AU - Masa, Roland AU - Pelsőczi-Kovács, István AU - Aigner, Zoltán AU - Oszkó, Albert Zoltán AU - Turzó, Kinga Mónika AU - Ungvári, Krisztina TI - Surface Free Energy and Composition Changes and Ob Cellular Response to CHX-, PVPI-, and ClO2-Treated Titanium Implant Materials JF - JOURNAL OF FUNCTIONAL BIOMATERIALS J2 - J FUNCT BIOMATER VL - 13 PY - 2022 IS - 4 PG - 11 SN - 2079-4983 DO - 10.3390/jfb13040202 UR - https://m2.mtmt.hu/api/publication/33215364 ID - 33215364 N1 - Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Tisza Lajos krt. 64, Szeged, H-6720, Hungary Department of Prosthodontics, Faculty of Dentistry, University of Szeged, Tisza Lajos krt. 64, Szeged, H-6720, Hungary Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Zrínyi u. 9., Szeged, H-6720, Hungary ELI-HU Non-Profit Ltd., Wolfgang Sandner u. 3., Szeged, H-6728, Hungary Dental School, Medical Faculty, University of Pécs, Tüzér u. 1, Pécs, H-7623, Hungary Export Date: 04 January 2024; Cited By: 1; Correspondence Address: K. Turzó; Dental School, Medical Faculty, University of Pécs, Pécs, Tüzér u. 1, H-7623, Hungary; email: turzo.kinga@pte.hu AB - 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. LA - English DB - MTMT ER - TY - JOUR AU - Gurdán, Zsuzsanna AU - Turzó, Kinga Mónika AU - Lőrinc, Laura AU - Szabó, Péter AU - Karádi, Kristóf Kálmán AU - Lukács, András Szilárd AU - Told, Roland AU - Kardos, Kinga AU - Maróti, Péter TI - Mechanical Characterization and Structural Analysis of Latex-Containing and Latex-Free Intermaxillary Orthodontic Elastics JF - POLYMERS J2 - POLYMERS-BASEL VL - 14 PY - 2022 IS - 21 PG - 17 SN - 2073-4360 DO - 10.3390/polym14214488 UR - https://m2.mtmt.hu/api/publication/33194417 ID - 33194417 AB - 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. LA - English DB - MTMT ER - TY - JOUR AU - Kolarovszki, Béla AU - Sándor, Alíz AU - Szabó, Péter AU - Heszlerné Kopniczky, Judit AU - Frank, Dorottya AU - Nagy, Ákos Károly AU - Turzó, Kinga Mónika TI - Energy drinks alter the surface morphology and roughness of composites, fissure sealants and titanium: An in vitro study JF - HELIYON J2 - HELIYON VL - 8 PY - 2022 IS - 9 PG - 9 SN - 2405-8440 DO - 10.1016/j.heliyon.2022.e10764 UR - https://m2.mtmt.hu/api/publication/33117585 ID - 33117585 AB - 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. LA - English DB - MTMT ER - TY - JOUR AU - Mühl, Attila AU - Szabó, Péter AU - Homokiné Krafcsik, Olga AU - Aigner, Zoltán AU - Heszlerné Kopniczky, Judit AU - Nagy, Ákos Károly AU - Marada, Gyula AU - Turzó, Kinga Mónika TI - Comparison of surface aspects of turned and anodized titanium dental implant, or abutment material for an optimal soft tissue integration JF - HELIYON J2 - HELIYON VL - 8 PY - 2022 IS - 8 PG - 8 SN - 2405-8440 DO - 10.1016/j.heliyon.2022.e10263 UR - https://m2.mtmt.hu/api/publication/33053775 ID - 33053775 AB - 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. LA - English DB - MTMT ER - TY - JOUR AU - Venkei, Annamária AU - Ungvári, Krisztina AU - Eördegh, Gabriella AU - Janovák, László AU - Zsoldiné Urbán, Edit AU - Turzó, Kinga Mónika TI - Photocatalytic enhancement of antibacterial effects of photoreactive nanohybrid films in an in vitro Streptococcus mitis model JF - ARCHIVES OF ORAL BIOLOGY J2 - ARCH ORAL BIOL VL - 117 PY - 2020 PG - 9 SN - 0003-9969 DO - 10.1016/j.archoralbio.2020.104837 UR - https://m2.mtmt.hu/api/publication/31382301 ID - 31382301 N1 - Összes idézések száma a WoS-ban: 0 AB - 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. LA - English DB - MTMT ER - TY - JOUR AU - Venkei, Annamária AU - Eördegh, Gabriella AU - Turzó, Kinga Mónika AU - Zsoldiné Urbán, Edit AU - Ungvári, Krisztina TI - A simplified in vitro model for investigation of the antimicrobial efficacy of various antiseptic agents to prevent peri-implantitis JF - ACTA MICROBIOLOGICA ET IMMUNOLOGICA HUNGARICA J2 - ACTA MICROBIOL IMMUNOL HUNG VL - 67 PY - 2020 IS - 2 SP - 127 EP - 132 PG - 6 SN - 1217-8950 DO - 10.1556/030.2020.01080 UR - https://m2.mtmt.hu/api/publication/31240664 ID - 31240664 N1 - Institute of Clinical Microbiology, Faculty of Medicine, University of Szeged, Semmelweis u. 6, Szeged, 6725, Hungary Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Tisza Lajos krt. 64, Szeged, 6720, Hungary Dentistry Program, Medical School, University of Pécs, Dischka Gy. u. 5, Pécs, 7621, Hungary Cited By :3 Export Date: 19 September 2023 Correspondence Address: VENKEI, A.; Institute of Clinical Microbiology, Semmelweis u. 6, Hungary; email: venkei.annamaria@gmail.com AB - 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. LA - English DB - MTMT ER - TY - CONF AU - Tarjányi, Tamás AU - Bogár, Ferenc AU - Turzó, Kinga Mónika AU - Minárovits, János AU - Tóth, Zsolt TI - Titán felszínnel kölcsönható KRSR peptid molekuladinamikai vizsgálata T2 - 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" PY - 2018 SP - 86 UR - https://m2.mtmt.hu/api/publication/30421511 ID - 30421511 LA - Hungarian DB - MTMT ER -