Results 81 to 90 of about 343,283 (222)

In vitro study of color stability of polycrystalline and monocrystalline ceramic brackets

Dental Press Journal of Orthodontics, 2014
OBJECTIVE: The aim of this in vitro study was to analyze color stability of monocrystalline and polycrystalline ceramic brackets after immersion in dye solutions.
Cibele Braga de Oliveira, Luiz Guilherme Martins Maia, Ary Santos-Pinto, Luiz Gonzaga Gandini Júnior   +3 more
doaj   +1 more source

Effectiveness of nonsurgical therapy of peri‐implant mucositis: A systematic review

Periodontology 2000, EarlyView.
Abstract Objectives This systematic review intends to respond to the question: “How do clinical parameters change in implants affected by peri‐implant mucositis following different non‐surgical treatment approaches or no treatment in patients monitored for a minimum of six months?” Materials and Methods A search for randomized clinical trials (RCTs) or
Giulia Brunello, Alessandro Antonelli, Ulrike Schulze‐Späte, Francisco Correia, Kathrin Becker   +4 more
wiley   +1 more source

Siliceous sponges or seawater as a silicon source? Tracing silicon burial pathways of the Upper Cretaceous opal‐CT deposits using δ30Si and δ7Li

Sedimentology, EarlyView.
ABSTRACT Classical models of formation of sedimentary siliceous rocks (flint, chert, opoka) commonly assume that the Cretaceous marine silicon (Si) cycle was primarily biologically controlled, broadly analogous to the modern ocean. In this framework, siliceous sponges are regarded as the principal source of dissolved silica (dSi) to sediment porewaters,
Agata Jurkowska, Ewa Świerczewska‐Gładysz, Marek Szczerba, Tomáš Magna, Szymon Kowalik Filipowicz   +4 more
wiley   +1 more source

Scanning electron microscopic investigation of ceramic orthodontic brackets

, 1990
Ceramic brackets were introduced to overcome the esthetic disadvantages of stainless steel brackets. The clinical impression of these brackets is very favorable.
McDonald, F., Toms, A.P.
core  

Mechanical properties of various ceramic brackets and torque generation of stainless steel, TMA, and NiTi wires [PDF]

, 2002
Thesis (M.S.D.)--Boston University, Henry M. Goldman School of Dental Medicine, 2002 (Biomaterials and Restorative Sciences).Includes bibliographical references (leaves 69-73).There have been several studies comparing the fracture strengths of ceramic ...
Lee, Hyun
core   +1 more source

A New Take on Sharp Cracks in Brittle Dielectrics: Where Electric Dipole Layers Meet Concentrated Line Forces

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT In this work, novel electrostatic aspects of sharp cracks in brittle dielectrics are discussed using the example of an impermeable Griffith crack in an infinite linear isotropic dielectric plate. On the one hand, electrostatic force densities stemming from the Maxwell stress tensor according to Lorentz are derived mathematically, where the ...
Lennart Behlen, Daniel Wallenta, Andreas Ricoeur   +2 more
wiley   +1 more source

Influence of adhesive and thermal cycling on the bond strength of ceramic brackets to dental ceramic [PDF]

, 2017
Aim: This in vitro study investigated the effect of the application of an adhesive, silane and thermal cycling (TC) on the shear bond strength (SBS) of ceramic brackets to feldspathic ceramic. Methods: 16 cylinders of feldspathic ceramic were etched with
Vedovello Filho, Mario, Ana Paula Terossi de Godoi, Ana Rosa Costa, Correr-Sobrinho, Lourenço, Valdrighi, Heloisa Cristina, Fraga, Patricia de Fátima, Godoi, Ana Paula Terossi de, Heloisa Cristina Valdrighi, Lourenço Correr-Sobrinho, Mario Vedovello Filho, Patricia de Fátima Fraga, Costa, Ana Rosa   +11 more
core   +1 more source

Antimicrobial Activity of Chlorhexidine Hexametaphosphate Nanoparticles against Streptococcus mutans and Lactobacillus acidophilus as a Novel Orthodontic Treatment

Medical Journal of Babylon
Background: Antimicrobial nanoparticles can be an effective strategy to decrease demineralization and white spot lesions associated with orthodontic treatment by coating the surfaces of the used appliances.
Zahraa Mohammed Al-Fadhily, Selma Merza Hasan, Zeinab Hemeed Abbas, Heider Hemeed Abbas   +3 more
doaj   +1 more source

Shear Bond Strength of Ceramic Brackets with Different Base Designs: An in-vitro Study

Orthodontic Journal of Nepal, 2015
Objective: To evaluate the influence of bracket base designs on shear bond strength of ceramic brackets bonded to natural teeth and to determine the common site of bond failure.
Gaurav Chaudhary, Pawan Kumar Chandra, Rakesh Sharma, P Narayana Prasad, Sonia Gera   +4 more
doaj   +1 more source

The keys to the garden: Capital, class, and the repurposing of Persian mystical poetry in Los Angeles

Journal of Linguistic Anthropology, Volume 36, Issue 3, December 2026.
Abstract This article traces the social life of medieval Persian poetry as it is repurposed within Los Angeles's Iranian diaspora. Based on 5 years of immersive ethnography in private erfān classes and mystical assemblies, I argue these gatherings function as contemporary diasporic courts, mobilizing core texts within a spiritual marketplace structured
Zia Khoshsirat
wiley   +1 more source