Article
Chemistry, Multidisciplinary
Jood Bazerbashi, Qoot Alkhubaizi, Azin Parsa, Mohamed Shabayek, Howard Strassler, Mary Anne S. Melo
Summary: The prevalence, location, and characteristics of radiolucency findings associated with proximal class II composite restorations were studied. The majority (83.5%) of the examined bitewing radiographs showed unusual radiographic signs, including internal voids, overhang, interlayer lines, secondary caries, interfacial gaps, and multiple atypical findings. This highlights the challenge of diagnosing radiolucencies underneath composite restorations.
APPLIED SCIENCES-BASEL
(2023)
Article
Dentistry, Oral Surgery & Medicine
Flavio Fernando Demarco, Maximiliano Sergio Cenci, Anelise Fernandes Montagner, Veronica Pereira de Lima, Marcos Britto Correa, Rafael R. Moraes, Niek J. M. Opdam
Summary: This review study provides an overview of factors influencing the longevity of direct resin composite restorations. A systematic search was conducted to include 33 articles reporting data from primary longitudinal clinical studies published from 2011 to 2021. The annual failure rates of restorations ranged from 0.08% to 6.3%, with survival rates varying from 23% to 97.7% and success rates varying from 43.4% to 98.7%. Secondary caries, fractures, and esthetic compromise were the main reasons for failures. Patient factors, dentist factors, and tooth/restoration factors were identified as risk factors for reduced restoration durability.
Review
Dentistry, Oral Surgery & Medicine
A. Zhang, N. Ye, W. Aregawi, L. Zhang, M. Salah, B. VanHeel, H. P. Chew, A. S. L. Fok
Summary: The oral cavity presents severe conditions that lead to degradation and failure of dental restorations, with major modes of failure being secondary caries and fracture of the tooth or restoration. Laboratory studies using simplified models provide fundamental understanding on the failure mechanism, with different types of models having their own characteristics, advantages, and disadvantages. The tooth-restoration interface is considered the weakest link in resin composite restorations, and calibration with clinical data is necessary for representative and predictive in vitro models.
JOURNAL OF DENTAL RESEARCH
(2021)
Article
Medicine, General & Internal
Valentin Vervack, Peter De Coster, Stefan Vandeweghe
Summary: In a study evaluating resin composite CAD/CAM restorations over a 28-month period, it was found that the overall survival and success rates were high, but there were some issues with marginal discoloration and adaptation. Patient and operator satisfaction levels were significantly correlated with restoration quality.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Dentistry, Oral Surgery & Medicine
Veronica P. Lima, Jaqueline B. Machado, Yu Zhang, Bas A. C. Loomans, Rafael R. Moraes
Summary: This study reviewed in vitro approaches used to simulate the degradation and fatigue of resin composite restorations. The included studies showed heterogeneity in methods, devices, and test parameters. The majority of studies combined cyclic loading with other aging methods. The study suggests the need for better clinical validation and reporting practices.
Article
Dentistry, Oral Surgery & Medicine
Neslihan Tekce, Mustafa Demirci, Safa Tuncer, Gizem Guder, Elif Ilgi Sancak
Summary: The clinical performance of direct composite restorations using nanohybrid and nanofill composite materials in patients with AI was evaluated. The results showed that the cumulative success rate of nanofill composite was higher than that of nanohybrid composite after 4 years. The primary reason for restoration failure was fracture.
JOURNAL OF ADHESIVE DENTISTRY
(2022)
Review
Chemistry, Physical
Aleksandra Skorulska, Pawel Piszko, Zbigniew Rybak, Maria Szymonowicz, Maciej Dobrzynski
Summary: This review focuses on various material groups used in CAD/CAM technology, such as ceramics, composites, and hybrids, with a goal to meet the increasing demand for highly aesthetic and functional indirect restorations in modern prosthetics. Recent studies have shown long-term clinical success of restorations made with ceramic and composite materials in the CAD/CAM method, but new materials are being developed that require further assessment. The comparison of these materials will consider mechanical and clinical properties, purpose, advantages, and limitations.
Review
Engineering, Chemical
Marcieli Dias Furtado, Felipe Immich, Wellington Luiz de Oliveira da Rosa, Evandro Piva, Adriana Fernandes da Silva
Summary: This study evaluated different bonding strategies for repairing aged resin composite restorations and found that better bonding can be achieved with air abrasion or diamond burs, as well as surface etching with phosphoric acid followed by application of adhesive system.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Dentistry, Oral Surgery & Medicine
Cecilia Vilela Vasconcelos Barros de Almeida, Karen Pintado-Palomino, Joao Henrique Parise Fortes, Raphael Jurca Goncalves da Motta, Bruna Neves de Freitas, Wilson Matsumoto, Maria Tereza Moura de Oliveira Cavalcanti, Josue Alves, Camila Tirapelli
Summary: The study aimed to compare the direct clinical assessment and indirect digital photographic assessment of resin composite restorations. Results showed significant differences in the classification of restorations between clinical and digital assessments, with clinical assessment detecting more cases in need of repair or replacement.
Article
Dentistry, Oral Surgery & Medicine
Elaine Kehily, Anthony Gallagher, Finbarr Allen, Anthony Roberts
Summary: The objective of this study was to develop and define performance metrics for the Class II posterior composite resin restoration procedure and to obtain validation through a consensus meeting. A Metrics Group deconstructed the performance of the procedure and defined the metrics, which were critiqued and modified by experts in Restorative Dentistry before consensus was reached. The resulting metrics comprehensively characterize the performance of the procedure and have been confirmed to be valid.
JOURNAL OF DENTISTRY
(2023)
Article
Chemistry, Physical
Jan Stanek, Abanoub Riad, Adam Le, Matej Bernat, Milad Hammal, Basel Azar
Summary: The purpose of this study was to evaluate the clinical performance, survival, and complications of indirect composite restorations on posterior teeth. The study found a high survival rate for the restorations, with fractures being the most common cause of failure. The study also demonstrated that composite-based cements had a significantly higher survival rate than resin-based cements, and cements with high viscosity had higher survival rates than low-viscosity cements.
Article
Medicine, General & Internal
Tobias T. Taubock, Patrick R. Schmidlin, Thomas Attin
Summary: The study evaluated the clinical performance of direct composite restorations in patients with severely worn dentitions at an increased vertical dimension of occlusion for up to 11 years. The overall quality of the restorations was good, with nanofilled composite showing less surface degradation and better margin qualities than microhybrid composite. Patient satisfaction with the treatment approach was high, indicating good long-term performance of the restorations.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Toxicology
Lei Yin, Simon Lin, Anne O. Summers, Van Roper, Matthew J. Campen, Xiaozhong Yu
Summary: This study analyzed data from NHANES to assess the impact of seafood consumption and dental amalgam restorations on human exposure to mercury. The findings suggest that seafood consumption increases levels of total mercury and methyl mercury in urine and blood, but not inorganic mercury. In contrast, the number of dental amalgam restorations showed a strong correlation with levels of mercury in blood and urine.
TOXICOLOGICAL SCIENCES
(2021)
Article
Multidisciplinary Sciences
Justyna A. A. Resztak, Jane Choe, Shreya Nirmalan, Julong Wei, Julian Bruinsma, Russell Houpt, Adnan Alazizi, Henriette E. E. Mair-Meijers, Xiaoquan Wen, Richard B. B. Slatcher, Samuele Zilioli, Roger Pique-Regi, Francesca Luca
Summary: Puberty is a crucial period of development characterized by hormonal, metabolic, and immune changes. This study reveals gene expression changes in immune cells during puberty that may explain sex differences in susceptibility to asthma.
NATURE COMMUNICATIONS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Catherine E. Hopkins, Natalia Restrepo-Kennedy, Amira Elgreatly, Carissa Comnick, Marcos Vargas, Erica C. Teixeira
Summary: This study investigated the fracture resistance and fracture modes of MOD amalgam molar restorations with extensive cuspal fracture repaired or replaced using a bulk-fill resin-based composite material. The results showed that composite material is a viable option for repairing and replacing cuspal defects, especially in the case of a 1-cusp fracture and 1-cusp fracture involving the adjacent proximal box. The resin-based composite used for replacement can withstand higher forces.
JOURNAL OF THE AMERICAN DENTAL ASSOCIATION
(2023)