Publications by authors named "A Vasconcellos"
Purpose: To evaluate and compare: (1) the effect of the bacterial biofilm on the dentin mineral density at the restoration-tooth interface and (2) the mineralization potential of three resin-based restorative materials (RBRM).
Methods: 16 extracted human molars free of caries and cracks were collected and stored for disinfection. Each tooth received two standardized Class II preparations with the cervical margin placed in dentin.
Redescription of Raillietiella mottae (Raillietiellidae: Pentastomida) a generalist parasite of insectivorous lizards: phenotypic plasticity revealed by molecular data.
Parasitol Res
October 2024
Article Synopsis
- Pentastomida are lung parasites primarily found in reptiles, with the genus Raillietiella having the most species but still mostly identified through physical traits.
- The Raillietiella parasites are categorized into morphotypic groups, with differences in hook shapes among species, like sharp versus blunt tips.
- This study used molecular analysis to show that what seems like morphological differences in Raillietiella mottae is actually a phenotypic variation linked to the host species, with female size and hook shape varying based on whether the lizards are nocturnal or diurnal.
Statement Of Problem: Despite the advances in dental cements a significant gap remains in understanding how different dispensing and mixing techniques impact the physical properties of resin-based cements.
Purpose: The purpose of this in vitro study was to investigate how the physical properties, shear bond strengths (before and after thermocycling), and film thickness of resin-based cements change based on the dispensing and mixing methods.
Material And Methods: Eight different resin-based cements were evaluated, and specimens were prepared for each method (n=14) by following International Organization for Standardization (ISO) standards.
Objective: Evaluate the impact of adjustment procedures - cut-out-rescan (COR) and data exchange by over-scanning (DEOS) techniques - through CAD/CAM software on the marginal fit outcome of ceramic crowns.
Methods And Materials: Twenty-eight de-identified teeth were adapted in a mandibular typodont set. Tooth #19 was prepared for a lithium disilicate crown and seven groups, G0 to G6 (n=10), were created based on the rescanned areas (mesial and/or buccal) on the typodont using an intraoral scanner through COR or DEOS techniques.