Publications by authors named "I Lewinstein"
Purpose: To compare time-dependent outcome of immediately loaded 1-piece (1P) implants with delayed loaded 1P and 2-piece (2P) implants.
Materials And Methods: A cohort of 33 patients divided into 3 groups: group A, 13 patients, 49 immediately placed and loaded 1P implants; group B, 11 patients, immediately placed and delayed loaded 1P implants; and group C, 10 patients, 39 2P implants delayed placed and loaded in a two-stage procedure. Marginal bone loss (MBL) was analyzed using x-ray radiography every 6 months, 1 year, and 3 years.
Statement Of Problem: Interim and definitive restorations cemented with interim cements for a prolonged interval are susceptible to bacterial infiltration and caries formation.
Purpose: The purpose of this in vitro study was to evaluate the long-term fluoride release and solubility of aged ZnO-based interim cements enriched separately with 0.4% NaF and SnF2.
The effects of in vitro fluoride mouth rinse on the antibacterial properties of orthodontic cements.
Orthod Craniofac Res
August 2014
Objectives: To investigate the ability of orthodontic cements to regain their antibacterial effect after aging for 1 month, followed by 2 weeks of fluoride 'recharging' through daily fluoride rinse.
Materials And Methods: Four orthodontic cements were tested: composite resin-based materials (Transbond XT and Transbond Plus), a conventional glass ionomer cement (CX Plus) and dual-cured resin-reinforced glass ionomer cement (Fuji ORTHO LC) by direct contact test. After polymerization and a 30-day aging process, the samples were rinsed daily with 0.
Objective: Re-examining the well accepted concept that Zinc-Oxide-Eugenol bases (ZOE) have a negative effect on composite restoration materials microhardness, in light of the advancement in composite materials and newer publications.
Methods: Five modern composite restoration materials were used, including hybrid (Xtra-fill and Z250), micro-fill hybrid (G-aenial and Gradia-direct) and methacrylate-free restorative material (Silorane- oxirane). Two base materials were used IRM (ZOE-base) and Fuji-IX (GI-base).
Objective: To test three noneugenol provisional cements (TempBond NE, RelyX Temp NE, and Freegenol) for their antibacterial properties and to test the hypothesis that addition of fluoride varnish confers antibacterial properties on these provisional cements without compromising their tensile strength.
Method And Materials: A total of 576 cylindrical samples were prepared (96 of each of six types) from three noneugenol provisional cements, both unmodified and modified by the addition of 5% w/w Duraphat fluoride varnish. The samples were aged in saline that was replaced twice a week for up to 90 days.