23 documents found, page 1 of 3
Antibacterial effect of ozone on cariogenic bacteria and its potential prejudic...
Santos, Marta; Leandro, Flávia; Barroso, Helena; Delgado, António H. S.; Proença, Luís; Polido, Mário; Cruz, Joana Vasconcelos eOzone is increasingly utilized in dental caries treatment due to its antibacterial properties. In a context of limited studies and no consensus on protocols, this research aims to assess ozone’s antibacterial efficacy on cariogenic bacteria and its potential adverse impact on dentin bond strength. Streptococcus mutans, Streptococcus sobrinus, Lactobacillus casei, and Actinomyces naeslundii suspensions were expo...
Clinical longevity of direct and indirect posterior resin composite restoration...
Josic, Uros; D’Alessandro, Carlo; Miletic, Vesna; Maravic, Tatjana; Mazzitelli, Claudia; Jacimovic, Jelena; Sorrentino, Roberto; Zarone, FernandoObjectives: To answer the PICO(S) question: Is there a difference in clinical longevity between direct and indirect resin composite restorations placed on permanent posterior teeth? Data: Randomized controlled clinical trials (RCTs) investigating direct and indirect resin composite restorations in posterior permanent teeth were considered. Sources: Several electronic databases were searched, with no language or...
Impact of shelf-life simulation on a self-adhesive composite : polymerization k...
Seoane, Helena; Chasqueira, Filipa; Azul, Ana Mano; Polido, Mário; Delgado, António H. S.Purpose: To determine the polymerization kinetics and color stability of a self-adhesive and conventional resin composite after accelerated shelf-life simulation. Materials and Methods: Two composites were tested – universal Filtek Z250 (3M Oral Care) and self-adhesive Constic (DMG). They were stored for 2 months in an incubator to simulate an Arrhenius aging model (60ºC) and tested at 5 different time points. ...
Effect of varying functional monomers in experimental self-adhesive composites ...
Ferreira, Marta Nunes; Santos, Marta Neves Dos; Fernandes, Inês; Marto, Carlos Miguel; Laranjo, Mafalda; Silva, Diana; Serro, Ana PaulaThe aim was to evaluate the effects of adding different functional monomers to experimental self-adhesive composites (SACs) on polymerization kinetics, cell metabolic activity, and sealing ability. SACs were formulated using urethane dimethacrylate as the base monomer and triethylene glycol dimethacrylate. Additionally, 10 wt.% of distinct functional monomers were added - 10-methacryloyloxydecyl dihydrogen phos...
Modifying dental composites to formulate novel methacrylate-based bone cements ...
Khan, Muhammad Adnan; Delgado, António H. S.; Young, Anne M.Objectives: The aim was to develop bone composites with similar working times, faster polymerisation and higher final conversion in comparison to Cortoss™. Additionally, low shrinkage/heat generation and improved short and longer-term mechanical properties are desirable. Methods: Four urethane dimethacrylate based composites were prepared using tri-ethylene-glycol dimethacrylate (TEGDMA) or polypropylene dimeth...
RoBDEMAT : a risk of bias tool and guideline to support reporting of pre-clinic...
Delgado, António H. S.; Sauro, Salvatore; Lima, Adriano F.; Loguercio, Alessandro D.; Bona, Alvaro Della; Mazzoni, Annalisa; Collares, Fabricio MezzomoObjectives: To develop a risk of bias tool for pre-clinical dental materials research studies that aims to support reporting of future investigations and improve assessment in systematic reviews. Methods: A four-stage process following EQUATOR network recommendations was followed, which included project launch, literature review, Delphi process and the tool finalization. With the support of the European Federat...
Collagen-depletion strategies in dentin as alternatives to the hybrid layer con...
Delgado, António H. S.; Costa, Madalena Belmar da; Polido, Mário Cruz; Azul, Ana Mano; Sauro, SalvatoreStrategies aiming to improve the longevity of resin–dentin adhesive interface developed so far have only been able to retard the problem. Different approaches are thus needed. The objective of this review was to determine whether the use of collagen-depletion strategies after acid-etching procedures may improve the bond strength of resin-based materials to dentin. A systematic review was planned following 2021 ...
Comparative assessment of different pre-treatment bonding strategies to improve...
Inglês, Magali; Cruz, Joana Vasconcelos e; Azul, Ana Mano; Polido, Mário; Delgado, António H. S.The aim of this study is to compare the adhesive interface formed in dentin, using self-adhesive composites applied with different bonding strategies, by testing the microtensile bond strength (μTBS) and ultramorphology through the use of light microscopy. Permanent, sound human molars were randomly allocated to six experimental groups. The groups included a negative control group, where only etching was perfor...
In search of novel degradation-resistant monomers for adhesive dentistry : a sy...
Mocharko, Vlasta; Mascarenhas, Paulo; Azul, Ana Mano; Delgado, António H. S.This study aimed to assess whether degradation-resistant monomers included in experimental dental adhesives can improve long-term bond strength compared to conventional monomers. This study followed the latest PRISMA guidance (2020). The search for the systematic review was carried out in four electronic databases: PubMed/Medline, Scopus, SciELO and EMBASE, without restrictions on the year of publication and la...
Increasing acid concentration, time and using a two-part silane potentiates bon...
Almiro, Matilde; Marinho, Beatriz; Delgado, António H. S.; Rua, João; Monteiro, Paulo; Santos, Inês Caetano; Proença, Luís; Mendes, José JoãoThere is still a lack of consensus concerning the recommended etching concentration, application time and type of silane when bonding lithium disilicate-reinforced glass ceramics manufactured by CAD/CAM. The purpose of this study was thus to conduct an in vitro study which investigates the influence of hydrofluoric acid (HF) concentration, etching time and silane type on the microtensile bond strength (μTBS) of...