Results 31 to 40 of about 1,391 (165)

Effects of Acidic Media on the Mechanical and Optical Properties of Digitally Designed Restorative Materials

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This investigation assessed how acidic environments affect the optical behavior, surface roughness, and hardness of a newly developed 3D‐printed permanent resin compared with commonly used computer‐aided design/computer‐aided manufacturing restorative blocks.
Ismini Papoulidou, Petros Mourouzis, Andrea Baldi, Nicola Scotti, Dimitrios Dionysopoulos   +4 more
wiley   +1 more source

Ultra‐High‐Speed Sintering of 3.5Y‐TZP Zirconia: Time Reduction Without Compromising Translucency

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To assess, firstly, the impact of three sintering speeds on translucency and grain size of 3.5Y‐TZP zirconia (Katana HT) across clinically relevant thicknesses, and secondly, the effect of thermocycling on translucency. Materials and Methods Disc specimens were fabricated at six thicknesses (0.7–2.0 mm) and sintered using SLOW (7 h),
Tatiana Roman, Hamdi Jmal, Teissir Ben Ammar , Adrien Greffet, Marc Lenertz, Olivier Etienne   +5 more
wiley   +1 more source

Metallurgical influence of separated endodontic instruments on the retrieval capability of katana-sword-like ultrasonic tip under different lubricants: In vitro study

Saudi Endodontic Journal
Introduction: Ultrasonic retrieval is a time-consuming procedure sacrificing considerable amounts of dentin. This study aimed to assess the retrieval capability of katana tip on different alloys under different lubricants regarding dentin thickness and ...
Omnia Abdel Hakim, Nihal Ezzat Sabet, Heba Ahmed Elasfouri   +2 more
doaj   +1 more source

Neuronics AG: Handling Robots Equipped with Highly Redundant Sensors

CHIMIA, 2003
Flexible and adaptive robot manipulators are useful to automate or assist diverse tasks in laboratories. Neuronics AG has developed a light-weight robot manipulator which is equipped with sensors of different modalities.
Hansruedi Früh
doaj   +1 more source

First recourse for care-seeking and associated factors among rural populations in the eastern Democratic Republic of the Congo

BMC Public Health, 2021
Background Access to quality healthcare is a global fundamental human right. However, in the Democratic Republic of the Congo, several parameters affect the choices of health service users in fragile, rural contexts (zones).
Wyvine Ansima Bapolisi, Hermès Karemere, Freddy Ndogozi, Aimé Cikomola, Ghislain Kasongo, Albert Ntambwe, Ghislain Bisimwa   +6 more
doaj   +1 more source

Effects of gastric acid on surface roughness, microhardness, fracture strength, and color change of dental ceramics: A systematic review of in vitro studies

Journal of Prosthodontics, EarlyView.
Abstract Purpose This systematic review evaluated the effects of simulated gastric acid (SGA) on surface and mechanical properties of dental ceramics to answer the research question: Does immersion in SGA alter the surface roughness, microhardness, fracture strength, and color of dental ceramics?
Geany Ferreira Rodrigues, Isaac Augusto Dantas Nogueira, Nicole Escórcio de Meneses, Ana Letícia Daniel Fontenele, Francisbênia Alves Silvestre, Ana Carolina Lima Moreira, Lívia Maria Sales Pinto Fiamengui, Karina Matthes de Freitas Pontes, Raniel Fernandes Peixoto   +8 more
wiley   +1 more source

Comparison of Optical Properties of Laminate Veneers Made of Zolid FX and Katana UTML Zirconia and Lithium Disilicate Ceramics

Frontiers in Dentistry, 2020
Objectives: This study aimed to compare the optical properties of Zolid FX, Katana UTML, and lithium disilicate laminate veneers. Materials and Methods: In this in-vitro experimental study, the maxillary left lateral incisor of a phantom received a ...
Fariborz Vafaei, Alireza Izadi, Samaneh Abbasi, Maryam Farhadian, Zahra Bagheri   +4 more
doaj   +1 more source

Implementing 3D‐printed indexing devices and contemporary scanning techniques for complete‐arch implant‐supported rehabilitations: A clinical case report

Journal of Prosthodontics, EarlyView.
Abstract A sixty‐eight‐year‐old male presented to the dental clinic seeking a complete mouth rehabilitation. He exhibited generalized dental caries, dental staining, cervical lesions, fremitus, and anterior wear. After declining tooth‐retaining options, he elected full‐mouth extractions with immediately loaded implant‐supported prostheses.
Francisco X. Azpiazu‐Flores, Metavi Phuckdeedindan, Abdullah M. Aldosari, Chao‐Chieh Yang, Dean Morton, Wei‐Shao Lin   +5 more
wiley   +1 more source

Adjustment of CAD–CAM crowns with and without a 3D‐printed model: Comparative study of marginal fit

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study evaluated and compared the marginal fit of CAD–CAM zirconia crown copings with and without a 3D‐printed control model. Materials and Methods This prospective in vitro trial involved 30 zirconia crown copings made from the same STL file. These were divided into two groups.
Marwan Al Akkad, Bedirhan Savas Yigit, Iva Voborna, Vaclav Prokupek, Oluwafunmibi Fasanya, Thomas Salinas, Radek Mounajjed   +6 more
wiley   +1 more source

EVALUATION OF BIAXIAL FLEXURAL STRENGTH AND TRANSLUCENCY OF MULTICHROMATIC TRANSLUCENT ZIRCONIA AND LITHIUM DISILICATE CERAMICS [PDF]

Alexandria Dental Journal, 2018
INTRODUCTION: Full-contour (monolithic) zirconia restorations are gaining in popularity. High translucent zirconia materials and multilayered zirconia blocks might help to overcome the aesthetic drawbacks of traditional zirconia for fabrication of ...
Fayza H. Al Abbassy, Sanaa A. Hussein, Sameer I. Bakry, Jihad G. Hamed   +3 more
doaj   +1 more source