Theses (Faculty of Dentistry)
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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 Common complications of sinus liftRahnaward, Nazanin; Kalas, Nándor; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Orsolya , Liska; Lukács , LeventeThe maxillary sinus, the largest of the paranasal sinuses, plays a crucial role in dental implantology. Tooth loss in the posterior maxilla often results in alveolar bone resorption and sinus expansion, reducing available bone for implant placement. The sinus lift procedure is a regenerative technique designed to increase bone volume and facilitate implant placement. It can be performed using a one-stage (simultaneous implant placement) or two-stage (delayed implant placement) approach, depending on residual bone height. This thesis analyzes common complications of sinus lift procedures, their clinical manifestations, and management strategies. As dental implants gain popularity over removable dentures, understanding these complications is essential for improving surgical outcomes. A comprehensive literature review was conducted using PubMed, Google Scholar, and Science Direct, focusing on studies published since 1980. Topics included sinus lift techniques, graft materials, and complication management. The two main surgical techniques used are: Lateral window approach (A window is created in the lateral maxillary wall to elevate the Schneiderian membrane and insert graft material), Transcrestal (osteotome) approach (A less invasive method accessing the sinus through the alveolar crest). Innovative methods like balloon and water-assisted sinus lifts aim to reduce surgical trauma and membrane perforation. Common complications include: Schneiderian membrane perforation (20-25%_ Managed with collagen membranes), Hemorrhage (Controlled with hemostatic agents), Infraorbital nerve damage (Minimized with careful planning), Infection (Prevented with antibiotics; severe cases may require drainage), Oroantral fistula (May need surgical closure), Chronic rhino sinusitis (Treated with corticosteroids or surgery). Post-surgical follow-up: Healing takes 6-9 months, requiring patients to avoid activities that increase sinus pressure. Regular follow-ups ensure graft integration and monitor complications. The sinus lift is a well-established procedure that enhances implant success in the posterior maxilla. While complications exist, careful planning, proper technique selection, and post-operative care can improve patient outcomes and reduce risks. This thesis provides insights into sinus lift challenges and management, contributing to better clinical practices in implant dentistry.Tétel Korlátozottan hozzáférhető Usage of resorbable and non resorbable membranes in oral surgeryHabibi, Peyman; Kalas, Nandor; Fogorvostudományi Kar::Dentoalveoláris Sebészeti nem önálló Tanszék; DE--Fogorvostudományi KarThis thesis explores the application of resorbable and non-resorbable membranes in oral surgery, particularly in guided bone regeneration (GBR) and guided tissue regeneration (GTR). Membranes play a crucial role in regenerative dental procedures by serving as barriers that prevent the invasion of soft tissues into bone grafts, thereby promoting effective healing and structural integrityTétel Korlátozottan hozzáférhető In-office bleachingMurrar, Karam; Bistey, Tamás; DE--Fogorvostudományi Kar; Biacsko, Csilla; Suta , MártonThis thesis explores the causes of tooth discoloration and evaluates in-office bleaching as a fast, effective treatment in aesthetic dentistry. It distinguishes between intrinsic and extrinsic stains and emphasizes accurate diagnosis to guide proper technique selection. The chemical mechanisms of hydrogen peroxide and related agents are reviewed, along with procedures for treating both vital and non-vital teeth. Common side effects like sensitivity and gingival irritation are addressed, with strategies for risk reduction. The study highlights both the clinical effectiveness and the psychological benefits of professional tooth whitening.Tétel Korlátozottan hozzáférhető Orthodontic archwiredadkhah, ghazalossadat; Hamid, Leila; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Hevesi , Judit; Faragó-Ládi , EszterOrthodontic archwires play a crucial role in orthodontic treatment, serving as a primary component in fixed appliances by delivering controlled forces for tooth movement. This thesis explores the materials, mechanical properties, and recent advancements in archwire technology to optimize clinical outcomes. The study begins by reviewing the evolution of orthodontic archwires, from early gold and stainless steel wires to modern alloys such as nickel-titanium (NiTi), beta-titanium, and cobalt-chromium. Each material’s mechanical properties, including elasticity, strength, biocompatibility, and friction characteristics, are analyzed in detail. Special attention is given to the influence of wire shape, cross-section, and stiffness on tooth movement efficiency and patient comfort. Recent advancements in coating technologies have further improved archwire performance. Coatings such as physical vapor deposition (PVD), chemical vapor deposition (CVD), and functional surface treatments enhance corrosion resistance, friction reduction, and biocompatibility. Additionally, antimicrobial coatings with silver nanoparticles have shown promise in reducing bacterial colonization, addressing common oral hygiene concerns associated with orthodontic appliances. Aesthetic considerations have also driven the development of tooth-colored archwires using epoxy, teflon, and rhodium coatings. These materials maintain mechanical performance while improving patient satisfaction. The thesis evaluates the durability of these coatings and their impact on force transmission, wear resistance, and plaque accumulation. Furthermore, the study examines the clinical applications of specialized archwires such as superelastic NiTi, copper NiTi, bioforce wires, and fiber-reinforced composite wires, highlighting their role in different treatment phases. Comparative analyses of friction, load-deflection characteristics, and long-term stability guide material selection for optimal treatment efficiency. In conclusion, ongoing innovations in orthodontic archwire materials and coatings have significantly enhanced treatment effectiveness, aesthetics, and patient comfort. Future research should focus on developing advanced biocompatible materials and surface modifications to further optimize orthodontic outcomes while minimizing treatment duration and adverse effects.Tétel Korlátozottan hozzáférhető Association between plant-based diets and periodontitisSoleimani Fard, Sajad; Varga, István; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Angyal, János; Róka, István; Fogorvostudományi KarThis thesis explores how plant-based diets might help protect against periodontal disease and aid in its management. Drawing on a broad range of research, it examines how consuming fruits, vegetables, whole grains, and legumes could support gum health, largely due to their anti-inflammatory and antioxidant properties, as well as their effects on the oral microbiome. Key nutrients such as vitamins C and D, omega-3 fatty acids, fiber, and phytochemicals are discussed in relation to their roles in maintaining oral tissues and regulating immune responses. The study also delves into biological mechanisms, showing how such diets may lower inflammation, enhance bone stability, and encourage a healthier microbial balance in the mouth. The findings suggest that nutritional approaches deserve more attention in periodontal care, with possible benefits reaching beyond dentistry into broader health contexts. The author emphasizes the need for well-designed clinical trials to clarify these connections and inform future dietary guidelines.Tétel Korlátozottan hozzáférhető Aging and PeriodontitisNagawa, Rhona Philomera; Angyal , János; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Reznik, György Imre; István, Róka; Fogorvostudományi KarRelationship between aging and periodontitis is crucial in order for better management and prevention strategies to be developed.Tétel Korlátozottan hozzáférhető Disc displacement without reductionNoorhosseininiaki, Seyedmohammad; Suta, Márton; Fogorvostudományi Kar::Bioanyagtani és Fogpótlástani Nem Önálló Tanszék; DE--Fogorvostudományi Kar; Hrubi, Edit; Tünde, Radics; Fogorvostudományi Kar::Bioanyagtani és Fogpótlástani Nem Önálló TanszékDisc displacement without reduction (DDwoR) is a situation where the disc is permanently displaced mostly anteriorly or anteromedially to the condyle, which is resulting in a painful locking of the temporomandibular joint, which clinically is called a closed lock . Patients with DDwoR frequently exhibit unique combinations of symptoms, including a history of clicking sound followed by a sudden feeling of discomfort, restricted mouth opening, and reduced contralateral movement, mostly we can find these symptoms in an acute form of DDwoR .Tétel Korlátozottan hozzáférhető Temporary Filling Materials in Restorative DentistryIrani, Khorehomand Noshir; Balogh , Bettina; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Kelentey , Barna Árpád; Marincsák , Rita; Fogorvostudományi KarThe role of temporary restorative material in dental treatment is not limited to protecting teeth until permeant restorations are placed. They also help protect pupal tissues, maintain occlusal spaces, preserve contact points, and support periodontal health. These materials are especially needed for indirect restorations like inlays and onlays. They also help stabilise the cavities and prevent further decay in multi-step treatments. Bacterial infections are a significant concern in endodontic treatments. By preventing coronal micro leakage; temporary restorative materials ensure the success of root canal procedures. They also prevent intracanal medication leakage, which contributes to the effectiveness of the treatment. In addition to that they provide an effective seal between visits, as well as protecting from further infections in the pulp and the surrounding bone. There are key properties that shows the affectiveness of temporary restorative materials such as mechanical strength for durability, marginal integrity to minimise micro-leakage, and water resistance. Their biocompatibility and antibacterial characteristics reduce reinfection risks. Due to their ability to protect the tissue and prevent bleeding, they help facilitate future restorations.Tétel Korlátozottan hozzáférhető Acceleration of orthodontic tooth movmentFarjadimoghadam, Farhan; Hevesi , Judit; Fogorvostudományi Kar::Fogszabályozási nem önálló Tanszék; DE--Fogorvostudományi Kar; Vitályos, Géza; Hamid, Leila; Fogorvostudományi Kar::Fogszabályozási nem önálló TanszékOrthodontic treatment primarily aims to align teeth and improve smiles The primary motivation for exploring methods to accelerate orthodontic tooth movement (OTM) is the lengthy duration of treatment. OTM is defined as a biological response to the disruption of the physiological equilibrium within the dentofacial complex caused by externally applied forces. Mechanical, Surgical, and Pharmacological are the main approaches to accelerate OTM Digital Technologies like CAD/CAM improves treatment planing Ultimate goal is to enhance patient outcomes, reduce physiological and physical burdens associated with long treatmentTétel Korlátozottan hozzáférhető Importance of bone maturity examination in orthodonticsHANTOSH, MUSTAFA AHMED HAMID; Géza , Vitalyos; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Olah, Barbara; Torok, JuditThe thesis explores how skeletal maturity assessments improve orthodontic diagnosis and treatment outcomes. It reviews various methods used to evaluate bone maturity, including hand-wrist radiographs, cervical vertebral maturation, CBCT imaging, third molar development, and biomarkers in body fluids. These techniques help determine optimal treatment timing, especially during growth spurts, to enhance treatment efficiency and stability. The thesis emphasizes challenges like variability among individuals and limited predictive power of current methods, and it advocates for integrating AI technologies to improve precision. Overall, it underlines the value of a patient-specific, growth-aware approach in orthodontics.Tétel Korlátozottan hozzáférhető Hyaluronic Acid in The Periodontal TherapyBahrami, Alireza; Varga , Istvan; Fogorvostudományi Kar::Parodontológiai nem önálló Tanszék; DE--Fogorvostudományi Kar; Katinka , Hernadi; Reznik Gyorgy , Imre; Fogorvostudományi Kar::Parodontológiai nem önálló TanszékHyaluronic acid (HA) plays a significant role in periodontal therapy due to its anti-inflammatory, wound-healing, and tissue-regenerative properties. In periodontics, HA is used as an adjunct to scaling and root planing (SRP) to reduce gingival inflammation, promote periodontal tissue repair, and inhibit bacterial growth. Its viscoelastic properties aid in forming a protective barrier, while its ability to modulate immune responses helps in reducing pocket depth and improving clinical attachment levels.Tétel Korlátozottan hozzáférhető Oral health in children with osteogenesis imperfectaAbdorrahimi, Melika; Nemes Judit Agnes; Fogorvostudományi Kar; DE--Fogorvostudományi Kar; Kovalecz, Gabriella; Baksa, BrigittaOsteogenesis Imperfecta (OI) a rare genetic disorder that causes fragile bones due to defects in type I collagen. It also affects dental and craniofacial structures, leading to common oral health issues such as dentinogenesis imperfecta (DI), malocclusions, enamel defects, and delayed tooth eruption. OI is caused by mutations in the COL1A1 and COL1A2 genes and is classified into four types (I-IV), with Types II and III being more severe and causing greater dental complications. DI weakens dentin, leading to rapid tooth wear, fractures, discoloration, and increased cavity risk. Enamel defects and periodontal issues are also common. Managing oral health in children with OI requires a multidisciplinary approach, focusing on preventive care (fluoride treatments, regular dental visits) and restorative treatments (crowns, veneers). Orthodontic challenges can be addressed with clear aligners, which are preferred over traditional braces to avoid damaging fragile teeth. In conclusion, early diagnosis and a personalized dental care plan are critical for managing the oral health issues associated with OI. Preventive strategies, restorative treatments, and careful orthodontic planning can significantly improve functional and aesthetic outcomes, enhancing the quality of life for affected individuals.Tétel Korlátozottan hozzáférhető Disc displacement with reductionArami, Elias; Suta, Márton; Fogorvostudományi Kar::Bioanyagtani és Fogpótlástani Nem Önálló Tanszék; DE--Fogorvostudományi Kar; Bistey, Tamás; Bukovinszky, Katalin; Fogorvostudományi Kar::Bioanyagtani és Fogpótlástani Nem Önálló TanszékThis thesis reviews temporomandibular joint (TMJ) disc displacement with reduction (DDWR), a common condition affecting jaw function. The TMJ is a complex joint that enables chewing, speaking, and swallowing. It includes the mandibular condyle, articular disc, and glenoid fossa, with the disc acting as a cushion for smooth movement. In DDWR, the disc becomes displaced, often due to stress or imbalance, disrupting normal joint mechanics. This can cause symptoms like jaw clicking, headaches, neck pain, and ear discomfort.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.