Theses (Faculty of Dentistry)
Állandó link (URI) ehhez a gyűjteményhez
Theses collection of the Faculty of Dentistry. The collection was started in 2015.
At the University of Debrecen, in accordance with the 2022 amendment to the 2011 Higher Education Act, student theses are only accessible from devices connected to the University's Eduroam WiFi network or from a university IP address.
“The thesis or diploma work of a student who has successfully passed the final examination shall be stored in full in the academic system of the higher education institution, and a record shall be maintained thereof. The stored theses and diploma works – with the exception of parts classified as confidential in accordance with the relevant legislation – must be made accessible and searchable without restriction through the academic system.” Further info on the National Higher Education Act in Hungarian: Felsőokt. tv. (új) - 2011. évi CCIV. törvény a nemzeti felsőoktatásról - Hatályos Jogszabályok Gyűjteménye.
Böngészés
legfrissebb feltöltések
Megjelenítve 1 - 20 (Összesen 383)
Tétel Korlátozottan hozzáférhető Bonding techniques in orthodonticsAdeagbo, Michael Oluwagbemiga; Török, Judit; Fogorvostudományi Kar::Fogszabályozási nem önálló Tanszék; DE--Fogorvostudományi Kar; Hevesi, Judit; Bökönyi, Anikó; Fogorvostudományi Kar::Fogszabályozási nem önálló Tanszék; Fogorvostudományi Kar::Fogszabályozási nem önálló TanszékThis thesis explores the evolution, classification, materials, and clinical applications of orthodontic bonding techniques. The core of the study contrasts direct and indirect bonding techniques, analysing their effectiveness, accuracy, and clinical implications. Special attention is given to bonding materials such as bracket types (stainless steel, ceramic, lingual, self-ligating, etc.), adhesives (resin, RMGICs, and compomers) and enamel surface treatments like phosphoric acid etching and sandblasting. Contemporary bonding methods for aligner systems and their attachment protocols were also discussed. The study concludes by highlighting ongoing innovations, including 3D-printed custom brackets, biomimetic surface treatments, and smart, bioactive adhesives that enhance treatment outcomes and minimize enamel damage.Tétel Korlátozottan hozzáférhető Preparation and investigation of BTCP reinforced hydrogel based compositesEnteshari, Sepehr; Bakó, József; Fogorvostudományi Kar::Bioanyagtani és Fogpótlástani Nem Önálló Tanszék; DE--Fogorvostudományi KarBeta Tri-Calcium Phosphate (BTCP) is a widely used material in the biomedical field. The 3D printability of hydrogel polymeric networks made of polyethylene glycol dimethacrylate (PEG-DMA) reinforced with the addition of BTCP filler was investigated. PEG-DMA was selected as the matrix component of the composite due to its cytocompatibility and absence of immunogenicity. In this research the BTCP contents were 2%, 5%, and 10% (w/w). PEG-DMA of 550 Dalton (Da) molecular weight was the hydrogel base. The three sets of samples all proved to be printable using the commercially available stereolithography type Form2 3D printer. The polymerization reaction chemically was confirmed to have taken place through FTIR testing.Tétel Korlátozottan hozzáférhető SLA-type 3D printed hydrogels for drug deliveryLiu, Xinyi; Bakó, József; Fogorvostudományi Kar::Bioanyagtani és Fogpótlástani Nem Önálló Tanszék; DE--Fogorvostudományi KarAlternative manufacturing techniques, such as 3D printing, have revolutionized medicine. The application of SLA-printed polyethylene glycol dimethacrylate (PEGDMA) hydrogels shows the potential to go beyond traditional “one-size-fits-all” drug designs, advancing personalized medicine through tailored drug delivery systems. This study proves that SLA-printed PEGDMA hydrogels are adaptable and effective for the creation of drug delivery systems. This distinct mechanical, swelling and drug-releasing behavior indicate their potential for personalized applications in different biomedical fields e.g. tissue engineering and wound healing.Tétel Korlátozottan hozzáférhető EFFECTS OF DIFFERENT SURFACE TREATMENTS ON SURFACE FREE ENERGY OF BULK FILL COMPOSITESNjenga, Ruth Wangui; Szalóki, Melinda; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Fogorvostudományi KarThis study investigated the effect of ultrasonic cleaning, phosphoric acid etching, and their combination on surface roughness and surface free energy. Which surface treatments (polishing or sandblasting or their combination) raise the SFE better, which can favor adhesion to composite surface. The tested resin based composites were SureFill SDR Flow and Tetric EvoCeram bulk fill composites. The conclusion of our results is that the cleaning effects (US, PA, US+PA) significantly influenced the Ra and SFE data compared to polished composite surface. The PA decreased the surface roughness and increased SFE that can facilitate the adhesion to composite.Tétel Korlátozottan hozzáférhető Allergies in orthodonticsKarimpoor, Ahmad; Hevesi, Judit; Fogorvostudományi Kar::Fogszabályozási nem önálló Tanszék; DE--Fogorvostudományi Kar; Oláh, Barbara; Fogorvostudományi Kar::Fogszabályozási nem önálló TanszékAllergic reactions to orthodontic materials can significantly impact patient safety, making thorough assessment and individualized management essential. Common allergens include nickel, chromium, cobalt, latex, and methacrylate monomers, which may cause reactions ranging from dermatitis to anaphylaxis. Type I (immediate) and Type IV (delayed) hypersensitivities require different diagnostic and management strategies, such as skin testing and vigilant monitoring. Hypoallergenic alternatives like titanium and ceramic brackets, latex-free products, and fully polymerized adhesives help minimize risks. Emergency preparedness, including the availability of epinephrine and trained staff, is vital for managing acute allergic responses. Ongoing documentation, patient education, and collaboration with healthcare professionals support long-term safety and personalized orthodontic care.Tétel Korlátozottan hozzáférhető Treatment of tooth-size/ arch-size discrepancy problemsSidick , Jabbarat Temitayo; Faragó-Ladi, Eszter; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Vitalyos, Geza; Hevesi, Judit; Fogorvostudományi KarTooth-size/arch-size discrepancy refers to a condition in orthodontics where there is a mismatch between the size of the teeth and the available space within the dental arch. This condition can lead to various clinical manifestations such as crowding, spacing, or misalignment of the teeth, which in turn may affect both the aesthetics and function of the dentition. The condition is often evaluated through measurements of tooth size and arch dimensions, with tools such as the Bolton analysis used to assess the discrepancy between the sizes of the upper and lower teeth and radiographs like cephalometric analysis.Tétel Korlátozottan hozzáférhető Management of blocked canals in EndodonticsLojewska , Karolina; Marincsák, Rita; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Nagy, László; Bohács, Judit; Fogorvostudományi KarEndodontic treatment manages damaged dental pulp, often through root canal therapy. It involves isolation, cleaning, and filling of the canal. Complications like blockages or tool breakage can occur. Causes include natural calcifications or procedural errors. Tools like microscopes and ultrasonics help manage difficult cases. Proper planning and techniques improve treatment success.Tétel Korlátozottan hozzáférhető Comparative analysis of one- and two-piece dental implantsYerik, Aruzhan; Hrubi, Edit; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Lampé, István; Mohácsi, Rita; Fogorvostudományi KarThis comparative analysis underscores that both one-piece and two-piece dental implants can achieve favorable clinical outcomes when selected based on individual case requirements. One-piece implants are advantageous in cases requiring immediate loading and efficient soft tissue integration, though they offer limited prosthetic flexibility. In contrast, two-piece implants provide greater versatility, allowing for angulation correction and prosthetic customization, which is particularly beneficial in complex clinical scenarios. Despite concerns regarding the implant-abutment interface, innovations such as platform switching have significantly improved their long-term success. The growing diversity of implant systems and materials, including titanium-zirconium alloys and zirconia, allows for more personalized and effective treatment planning. Ultimately, the choice of implant should be guided by thorough preoperative assessment, patient-specific factors, and evolving technological advancements to optimize clinical outcomes.Tétel Korlátozottan hozzáférhető Indications and modern techniques of apicoectomy (root-end-resection)Bui, Dang Khoa; Erika, Hidi; Fogorvostudományi Kar::Konzerváló Fogászati nem önálló Tanszék; DE--Fogorvostudományi Kar; Judit, Bohács; Suta, Péter; Fogorvostudományi Kar::Konzerváló Fogászati nem önálló TanszékApicoectomy, also known as root-end resection, is a surgical endodontic procedure performed to remove persistent periapical infections that cannot be resolved through conventional root canal treatment. This thesis provides a comprehensive analysis of its indications, contraindications, historical development, and modern advancements in surgical techniques.Tétel Korlátozottan hozzáférhető Types of odontoma, diagnosis, and therapyNGUYEN, AI PHUONG; Levente, Géza Lukács; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Taskó , Máte; Szilágyi , Tímea; Fogorvostudományi KarThis thesis explores odontomas, one of the most common odontogenic tumors, focusing on their types, diagnostic approaches, and therapeutic management. A key focus is on diagnosis, which involves anamnesis, extraoral and intraoral examinations, radiographic and histological assessments, and differential diagnosis to distinguish odontomas from odontogenic tumors, idiopathic lesions, developmental disorders, bone tumors, and infections. The prognosis of odontomas is explored, emphasizing their typically benign nature and favorable outcomes when managed appropriately. The treatment section outlines therapeutic approaches, including surgical removal and post-operative monitoring to prevent recurrence or complications. The other parts of the thesis is going to more details about etiology, epidemiology, classification, and pathology of odontomas.Tétel Korlátozottan hozzáférhető Th17 cell function in periodontitisOnyeama , Uzoramaka Udodirim; Angyal, János; DE--Fogorvostudományi Kar; Hernádi, Katinka; György Imre, ReznikPeriodontitis is a chronic inflammatory disease influenced by microbial challenges and host immune responses, with Th17 cells playing a central role in both protection and tissue destruction. These cells contribute to immune defense by producing cytokines such as IL-17, IL-22, and IL-23, which stimulate neutrophil recruitment, antimicrobial peptide secretion, and epithelial barrier integrity. This early response is crucial for controlling bacterial biofilms and maintaining periodontal health. However, when dysregulated, Th17 responses promote excessive inflammation, oxidative stress, and osteoclast activation, leading to alveolar bone resorption and tissue destruction.Tétel Korlátozottan hozzáférhető Adhesion to dental zirconia with different yttria contentLiu, Chia-Yuan; Radics, Tünde; Fogorvostudományi Kar::Bioanyagtani és Fogpótlástani Nem Önálló Tanszék; DE--Fogorvostudományi Kar; Bakó, József; Üveges, Andrea; Fogorvostudományi Kar::Bioanyagtani és Fogpótlástani Nem Önálló TanszékZirconia ceramics are popular in dentistry for their strength, biocompatibility, and esthetics, with yttria content critically influencing their properties. Low-yttria zirconia (3Y-PSZ) offers high strength through transformation toughening, while high-yttria types (5Y-PSZ) provide better translucency but reduced bond strength. This study examines how yttria content affects adhesion performance and surface treatment effectiveness. Air-particle abrasion combined with 10-MDP primers remains the most reliable bonding method across zirconia types, though high-yttria zirconia requires gentler protocols to avoid damage. Bond strength tests and aging simulations reveal that higher yttria content often leads to weaker and less durable bonds. Tailoring adhesion strategies to yttria composition is essential for the long-term success of zirconia restorations.Tétel Korlátozottan hozzáférhető SHED: Stem cells from human exfoliated deciduous teethHávrilec, Oleszjá; Kovalecz, Gabriella; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Nemes , Judit; Dakos, Adél; Fogorvostudományi KarThis thesis is a literature review that focuses on a thorough investigation of basic properties of SHED, such as their genesis, isolation, and capacity for differentiation, while emphasizing their distinct benefits over alternative sources of stem cells. It explores the many therapeutic uses of SHED by providing a comprehensive assessment of the literature. These include systemic therapies for autoimmune, cardiovascular, and neurodegenerative diseases as well as dental tissue regeneration.Tétel Korlátozottan hozzáférhető Application of Nanoparticles in Dental Composites and PMMA-Based Denture BaseplatesHooshmand, Sara; Bukovinszky, Katalin; Fogorvostudományi Kar::Bioanyagtani és Fogpótlástani Nem Önálló Tanszék; DE--Fogorvostudományi KarThe main objective of this thesis is to systematically review and analyze the use of nanoparticles in dental composites and PMMA denture base plates. This study focuses on how nanoparticles enhance properties such as mechanical strength, thermal stability, antimicrobial effectiveness, and biocompatibility in both partial and complete PMMA denture bases and composite fillings.Tétel Korlátozottan hozzáférhető Guided Implant Surgery: Past, Present and FutureDawod, Mustafa Khaled Dina; Suta, Gábor; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Lampé, István; Hrubi, EditThis thesis explores the development and application of guided implant surgery (GIS) in modern dental implantology. It reviews traditional and contemporary techniques, highlighting how digital advancements like CBCT imaging, CAD/CAM systems, and dynamic navigation have improved precision, safety, and efficiency in implant placement. Different classifications of surgical guides are discussed based on support type, drilling method, visualization, and manufacturing technique. The study also examines the role of artificial intelligence and robotics in the future of guided implantology. Overall, GIS is shown to significantly enhance clinical outcomes, despite certain limitations related to cost, training, and flexibility during surgery.Tétel Korlátozottan hozzáférhető Coronal Leakage of Temporary Filling Material in EndodonticsAmini Masouleh, Erfan; Suta , Péter; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Juhász, Alexander; Szitha András, GaborCoronal leakage is a critical factor influencing the long-term success of endodontic treatments. Temporary restoration materials play an essential role in sealing the access cavity and preventing bacterial contamination during and after root canal therapy. My thesis examines the sealing ability, durability, and limitations of various temporary materials commonly used in clinical practice. Through a review of current research and laboratory studies, it highlights how material properties like adaptability, water absorption, and setting time affect their effectiveness. The findings emphasize that no material offers a perfect seal, making material selection and proper placement techniques crucial. Ultimately, the thesis underscores the importance of minimizing coronal leakage to enhance endodontic treatment outcomes and preserve tooth integrity.Tétel Korlátozottan hozzáférhető Dental treatment of patients receiving allogeneic peripheral blood stem cell transplantationYixin, Lu; Gebri, Eniko Zsuzsa; DE--Fogorvostudományi KarThis thesis explores the dental management of patients undergoing allogeneic peripheral blood stem cell transplantation, focusing on how immunosuppression and intensive treatments like chemotherapy and total body irradiation impact oral health. It outlines the stages of transplantation and aligns dental care strategies with each phase to minimize complications such as oral mucositis, infections, and graft-versus-host disease. The study emphasizes the importance of early dental intervention, professional oral health care, and continuous monitoring. Overall, the thesis provides a thorough, evidence-based guide to improving oral outcomes and quality of life for allo-PBSCT patients.Tétel Korlátozottan hozzáférhető Chitosan use in dentistryDong, Yining; Gebri, Eniko Zsuzsa; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Szabó, Adrienne; Révész, Petronella; Fogorvostudományi KarChitosan is a natural, biocompatible, biodegradable biopolymer with antimicrobial properties, making it valuable in various dental applications. It is used in prosthodontics, endodontics, periodontology, and oral surgery to promote tissue regeneration and combat infection. In endodontics, it acts as a chelating agent, improving the mechanical and antibacterial properties of dental materials. In periodontology, it supports bone healing and targeted tissue regeneration. However, chitosan has limitations such as inconsistent mechanical strength, degradation rates, and poor solubility. To overcome these challenges, researchers are exploring new chemical modifications and formulations to enhance its performance in dentistry.Tétel Korlátozottan hozzáférhető Primary endodontic infections - pathogenesis, nature and treatmentTruong , Ha Nguyen; Toth, Eniko; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Hidi, Erika; Greta, Mizsei; Fogorvostudományi KarThe thesis discusses the pathogenesis, nature and treatments of primary endodontic infections. The main focus is the microbial aspect of root canal infection. Different bacterial localisation in different stages of root canal infection are elaborated. Virulence factors in endodontic infection are also explained, shining light on the pathomechanism of root canal infection and the relationship with their clinical presentations. Other clinical traits are also mentioned such as clinical aspects, symptoms, diagnosis and treatment possibility.Tétel Korlátozottan hozzáférhető Intraoral Wounds and their Oral Surgical ManagementSakran, Jona; Levente, Lukács; DE--Fogorvostudományi KarThe oral mucosa is a multifacted tissue that secretes chemicals, safeguards underlying tissues, and amplifies the feeling of temperature, touch, pain, and taste. It is covered by stratified squamous epithelium and can be categorized as acute or chronic wounds. Wound healing may proceed by primary or secondary intention. Factors influencing wound healing encompass age, diabetes, nutritional status, and infections. Oral wound treatment encompasses washing, debridement, hemostasis, tetanus prophylaxis, antibiotic administration, and wound closure.