Preparation designs of ceramic inlays, onlays, overlays

dc.contributor.advisorSuta, Gábor András
dc.contributor.advisordeptFogorvostudományi Kar
dc.contributor.authorKristjánsdóttir, Katla
dc.contributor.departmentDE--Fogorvostudományi Kar
dc.contributor.opponentBernadett, Kis Ivett
dc.contributor.opponentLendvai, András
dc.contributor.opponentdeptFogorvostudományi Kar
dc.date.accessioned2026-05-04T09:20:42Z
dc.date.available2026-05-04T09:20:42Z
dc.date.created2026
dc.description.abstractThis thesis reviews preparation designs for ceramic inlays, onlays, and overlays in posterior teeth, focusing on biomechanical principles, material selection, and adhesive protocols in contemporary restorative dentistry. With the development of high-strength ceramics such as lithium disilicate and zirconia, together with CAD/CAM technology, minimally invasive indirect restorations have become predictable and widely used alternatives to full-coverage crowns. The classification of ceramic and ceramic-like materials is discussed to support appropriate clinical decision-making. Understanding material composition and mechanical properties is essential for selecting restorations capable of withstanding functional loads while meeting aesthetic demands. Indirect partial restorations are categorized as inlays, onlays, and overlays depending on cusp coverage. Preparation design plays a decisive role in their long-term success. Conservative designs that preserve enamel, maintain adequate ceramic thickness, incorporate rounded internal line angles, and ensure slight wall divergence provide improved stress distribution, enhanced fracture resistance, and reliable adhesive bonding. Evidence suggests that restricted cusp reduction often achieves sufficient mechanical performance while preserving more natural tooth structure compared to extensive coverage. Common preparation errors, including excessive taper, sharp internal angles, and inadequate reduction, may compromise restoration longevity. Advanced clinical techniques such as immediate dentin sealing (IDS), cervical margin relocation (CMR), and deep marginal elevation (DME) further improve adhesive predictability and allow management of deep or challenging margins. Overall, the success of ceramic inlays, onlays, and overlays depends primarily on proper preparation design, enamel preservation, correct material selection, and strict adherence to evidence-based adhesive protocols. When combined with modern digital workflows, these principles support durable, conservative, and biologically respectful rehabilitation of posterior teeth.
dc.description.coursefogorvos
dc.description.courselangangol
dc.description.degreeegységes, osztatlan
dc.format.extent40
dc.identifier.urihttps://hdl.handle.net/2437/406749
dc.language.isoen
dc.rights.infoHozzáférhető a 2022 decemberi felsőoktatási törvénymódosítás értelmében.
dc.subjectThis thesis is based on a narrative literature review aimed at summarizing current evidence on preparation designs for ceramic inlays, onlays, and overlays. A structured search was conducted in PubMed, Scopus, Web of Science, and Google Scholar, focusing on literature published between 1990 and 2025. Search terms included ceramic inlay, onlay, overlay, tooth preparation, CAD/CAM ceramics, adhesive dentistry, and biomechanical principles. Studies were included if they discussed ceramic or ceramic-like restorative materials, described preparation guidelines, or reported clinical or biomechanical outcomes relevant to indirect restorations. Articles were excluded if they focused solely on metal restorations, lacked methodological transparency, or did not provide preparation-related information. After screening titles, abstracts, and full texts, relevant data were extracted on preparation geometry, occlusal considerations, margin design, and adhesive requirements. The findings were synthesized qualitatively and organized according to the major themes of the thesis. As this is a narrative review, no meta-analysis was performed, and the conclusion depended on the quality and diversity of the available literature; however, the broad range of contemporary sources strengthens the validity of the discussion.
dc.subject.dspaceMedicine::Dentistry
dc.titlePreparation designs of ceramic inlays, onlays, overlays
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