Influence of ceramic crown design (translucent monolithic zirconia vs. bilayered) of implant-supported single crowns after mechanical cycling

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUnisagrado-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorde Oliveira Limirio, Joao Pedro Justino-
Autor(es): dc.creatorGomes, Jéssica Marcela de Luna-
Autor(es): dc.creatorSantiago-Junior, Joel Ferreira-
Autor(es): dc.creatorNagay, Bruna Egumi-
Autor(es): dc.creatorPesqueira, Aldiéris Alves-
Autor(es): dc.creatorAssunção, Wirley Gonçalves-
Autor(es): dc.creatorAlves-Rezende, Maria Cristina Rosifini-
Autor(es): dc.creatorPellizzer, Eduardo Piza-
Data de aceite: dc.date.accessioned2025-08-21T15:54:29Z-
Data de disponibilização: dc.date.available2025-08-21T15:54:29Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1111/jerd.13237-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/305606-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/305606-
Descrição: dc.descriptionObjectives: This study aimed to assess the influence of translucent monolithic versus bilayered crowns and whether the use of a CoCr base abutments affects the fatigue and fracture resistance of screwed implant-supported single crowns with external connections under mechanical cycling. Materials and Methods: Fifty specimens were divided into groups: (1) metal–ceramic (MC) crown, (2) veneered zirconia crown (Zr), (3) veneered zirconia crown with a CoCr base abutment (ZrB), (4) monolithic translucent zirconia crown (MZr), and (5) monolithic translucent zirconia crown with a CoCr base abutment (MZrB). Specimens underwent mechanical cycling (5 × 106 cycles; 150 N) evaluating fatigue resistance (number of failures) and those that failed were subsequently subjected to fractographic analyses (stereomicroscope and scanning electron microscope) to evaluate failure location and area, and maximum fracture load was also measured. Results: The failure-related survival rate (100%) and maximum fracture resistance of the MZrB were significantly higher than those of MC and Zr (50%; p < 0.05). There were no significant differences in the failure rate and fracture resistance when a CoCr base abutment was used or not in the translucent monolithic Zr groups (p > 0.05;MZrB vs. MZr). Failure location, with MC crowns' fractures, noted at the screw area (p = 0.043), while all-ceramic crowns were mostly in the cuspid and to failure area, the Zr group had the largest mean (15.55 ± 9.17 mm2) among the groups, significant difference only when compared with MC (1.62 ± 0.81 mm2) (p = 0.025). Conclusions: Translucent monolithic zirconia crowns exhibited significantly higher fatigue and fracture resistance compared with conventional MC and bilayered crowns. Clinical Significance: The appropriate choice of material and manufacturing technique is crucial for predicting the higher clinical performance of single crowns. Enhanced mechanical resistance in terms of fatigue and fracture resistance can be achieved by replacing MC and bilayered restorations with computer-aided design and computer-aided manufacturing monolithic zirconia.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Sao Paulo State University (UNESP) School of Dentistry, São Paulo-
Descrição: dc.descriptionHealth Sciences Center Unisagrado, São Paulo-
Descrição: dc.descriptionDepartment of Prosthodontics and Periodontology Piracicaba Dental School University of Campinas (UNICAMP), São Paulo-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Sao Paulo State University (UNESP) School of Dentistry, São Paulo-
Descrição: dc.descriptionFAPESP: #2018-13677-2-
Descrição: dc.descriptionFAPESP: #2018/13086-4-
Formato: dc.format1326-1336-
Idioma: dc.languageen-
Relação: dc.relationJournal of Esthetic and Restorative Dentistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCAD–CAM-
Palavras-chave: dc.subjectceramics-
Palavras-chave: dc.subjectdental implants-
Palavras-chave: dc.subjectfatigue resistance-
Palavras-chave: dc.subjectfracture resistance-
Palavras-chave: dc.subjectzirconium-
Título: dc.titleInfluence of ceramic crown design (translucent monolithic zirconia vs. bilayered) of implant-supported single crowns after mechanical cycling-
Tipo de arquivo: dc.typelivro digital-
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