Objective: Considering that misfit is a significant predictor of the clinical success of indirect restorations, the objective of this study was to evaluate the marginal and internal misfit of two computer-aided design and manufacturing (CAD/CAM) RMC ceramic materials used as occlusal veneers (OVs) of different thicknesses.
Methods And Materials: A CAD model of a mandibular first molar was obtained and OV preparations 0.5-, 1.0-, and 1.5-mm thick were modeled and milled in two different materials (n=10/group): resin nanoceramic (RNC) and polymer-infiltrated ceramic network (PICN). Using the same CAD model, tooth preparations were milled in fiber-reinforced epoxy resin (n=20/thickness). The marginal and internal misfit of the restorations was assessed by X-ray microtomography. The measurements of the marginal gap (MG) and absolute marginal discrepancy were performed in two locations on each slice, whereas internal gap (IG) measurements were performed at ten locations on each slice. The data obtained were analyzed using two-way analysis of variance and Tukey post-hoc tests (α=0.05).
Results: No significant effect was attributable to the material type or material-thickness interaction for the MG, absolute marginal discrepancy (AMD), or IG (p>0.05). However, the thickness significantly affected the IG of the restorations (p<0.05). CAD/CAM RNC and PICN systems presented similar MG and AMD for OVs 0.5-, 1.0-, and 1.5-mm thick. However, the IG varied between thicknesses.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2341/21-115-L | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Clinical Characteristics and Long-term Outcomes of Gastric Neuroendocrine Tumors.
Gut Liver
January 2025
Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea.
Background/aims: Gastric neuroendocrine tumors (GNETs), once rare, have become more prevalent due to the increased use of endoscopy and increased physician awareness. The clinical characteristics and long-term outcomes of GNET management were explored in this study.
Methods: The clinical data of 69 patients who treated at Seoul National University Hospital between January 2013 and October 2023 were retrospectively studied.
A rare case of primary unilateral conjunctival small lymphocytic lymphoma: A case report.
Int J Surg Case Rep
December 2024
Department of Internal Medicine, Hawassa University Comprehensive Specialized Hospital, Hawassa, Sidama, Ethiopia.
Introduction And Importance: Orbital lymphomas, are extranodal lymphomas primarily involving the ocular adnexa, which includes conjunctiva, eyelids, eyelashes, eyebrows, lacrimal glands, retro-orbital soft tissues, and the extraocular muscles. Ocular adnexal lymphomas can be primary or secondary. This case is important because there are few case reports in the world, and it is among the first case to be reported from Ethiopia.
View Article and Find Full Text PDFFemoral anteversion as a potential risk factor for anterior cruciate ligament injuries in athletes.
J Exp Orthop
January 2025
Purpose: Non-contact anterior cruciate ligament (ACL) injuries are influenced by the anatomic and biomechanical characteristics of the lower limb. The combination of knee valgus, hip internal rotation and tibial external rotation are important contributors to non-contact ACL injuries. In this study, we aimed to evaluate the effect of femoral anteversion on the incidence of ACL injuries among athletes.
View Article and Find Full Text PDFThe South China Sea Mooring Array and its applications in exploring oceanic multiscale dynamics.
Sci Bull (Beijing)
December 2024
Frontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES) and Physical Oceanography Laboratory/Key Laboratory of Ocean Observation and Information of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Qingdao/Sanya 266000/572000, China; Sanya Oceanographic Laboratory, Sanya 572000, China; Laboratory for Ocean Dynamics and Climate, Qingdao Marine Science and Technology Center, Qingdao 266000, China. Electronic address:
The South China Sea (SCS) is abundant with complex multiscale dynamic processes but their spatiotemporal variations, generation and evolution mechanisms, and mutual interactions remain inadequately understood due to the lack of long-term in situ observations. To explore oceanic multiscale dynamics in the SCS, the SCS Mooring Array (SCSMA) was began to be constructed since 2009. The SCSMA consists of ∼40 moorings and is the largest in situ ocean observing system in marginal seas worldwide.
View Article and Find Full Text PDFAssociations between rural hospital closures and acute and post-acute care access and outcomes.
Health Serv Res
December 2024
Maxwell School of Citizenship and Public Affairs, Syracuse University, Syracuse, New York, USA.
Objective: To determine whether rural hospital closures affected hospital and post-acute care (PAC) use and outcomes.
Study Setting And Design: Using a staggered difference-in-differences design, we evaluated associations between 32 rural hospital closures and changes in county-level: (1) travel distances to and lengths of stay at hospitals; (2) functional limitations at and time from hospital discharge to start of PAC episode; (3) 30-day readmissions and mortality and hospitalizations for a fall-related injury; and (4) population-level hospitalization and death rates.
Data Sources And Analytic Sample: 100% Medicare claims and home health and skilled nursing facility clinical data to identify approximately 3 million discharges for older fee-for-service Medicare beneficiaries.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!