The effect of varying head tilt on the perceived color from composite resin and porcelain restorations: Simulating the effect of altering torque

In 1955, Buonocore introduced the etching of enamel with phosphoric acid. Bonding to enamel was created by mechanical interlocking of resin tags with enamel prisms. Enamel is an inert tissue whose main component is hydroxyapatite (98% by weight). Conversely, dentin is a wet living tissue crossed by tubules containing cellular extensions of the dental pulp. Dentin consists of 18% of organic material, primarily collagen. Several generations of dentin bonding systems (DBS) have been studied in the last 20 years. The dentin bond strengths associated with these DBS have been constantly lower than the enamel bond strengths. Recently, a new generation of DBS has been described. They are applied in three steps: an acid agent on enamel and dentin (total etch technique), two mixed primers and a bonding agent based on a methacrylate resin. They are supposed to bond composite resin to wet dentin through dentin organic component, forming a peculiar blended structure that is part tooth and part resin: the hybrid layer.

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Nonlinear Analysis of Visual Evoked Potentials Elicited by Color Stimulation

Methods of Information in Medicine ◽

10.1055/s-0038-1636871 ◽

1997 ◽

Vol 36 (04/05) ◽

pp. 315-318 ◽

Cited By ~ 3

Author(s):

K. Momose ◽

K. Komiya ◽

A. Uchiyama

Keyword(s):

Visual System ◽

Evoked Potentials ◽

Visual Evoked Potentials ◽

Normal Subjects ◽

Second Order ◽

First Order ◽

The Relationship ◽

Perceived Color ◽

Second Order Nonlinearity ◽

Visual Evoked

Abstract:The relationship between chromatically modulated stimuli and visual evoked potentials (VEPs) was considered. VEPs of normal subjects elicited by chromatically modulated stimuli were measured under several color adaptations, and their binary kernels were estimated. Up to the second-order, binary kernels obtained from VEPs were so characteristic that the VEP-chromatic modulation system showed second-order nonlinearity. First-order binary kernels depended on the color of the stimulus and adaptation, whereas second-order kernels showed almost no difference. This result indicates that the waveforms of first-order binary kernels reflect perceived color (hue). This supports the suggestion that kernels of VEPs include color responses, and could be used as a probe with which to examine the color visual system.

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Comparison of static ocular counter-roll induced by active and passive head tilt and whole body roll

Aktuelle Neurologie ◽

10.1055/s-2005-919324 ◽

2005 ◽

Vol 32 (S 4) ◽

Author(s):

V.C Zingler ◽

D Krivoshey ◽

E Schneider ◽

S Glasauer ◽

T Brandt ◽

...

Keyword(s):

Head Tilt ◽

Whole Body ◽

Body Roll

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Assessment of the effects of staining solutions, carbamide peroxide, and mouthwashes on color stability of composite resin

Journal of Advanced Clinical and Research Insights ◽

10.15713/ins.jcri.11 ◽

2014 ◽

Vol 1 (2) ◽

pp. 36-41

Author(s):

Erica Crastechini ◽

Paula de Siqueira Barbosa ◽

Heleine Maria Chagas Rego ◽

Priscila Holleben ◽

Carlos Rocha Gomes Torres ◽

...

Keyword(s):

Composite Resin ◽

Color Stability ◽

Carbamide Peroxide

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Monobloco – cimentação de pino e preenchimento em único passo em dente tratado endodonticamente

Prosthesis and Esthetics in Science ◽

10.24077/2020;1037-cs1019 ◽

2020 ◽

Vol 10 (37) ◽

pp. 10-19

Author(s):

Patrícia Ferronato Araújo ◽

Ana Carolina Portes Pasmadjian ◽

Antonio Setsuo Sakamoto Junior

Keyword(s):

Composite Resin ◽

Case Reports ◽

Single Step ◽

Resin Cement ◽

Endodontically Treated Teeth ◽

Posterior Teeth ◽

Elasticity Module ◽

Post And Core Technique ◽

Post And Core ◽

Root Fiber

The literature reports several materials for the restoration of endodontically treated teeth, with coronal destruction that requires an intra-root fiber post to stabilize the prosthetic part. The intra-radicular post of composite resin reinforced with fiberglass can be used as retainers in rehabilitating endodontically treated teeth due to their adhesiveness, pleasing aesthetics, and elasticity module close to the dentin less wear on the remaining structure. This clinical case reports the step-by-step application of dual resin cement (Rebilda DC Dentine - Voco) used as the cementation material of the post and material for the filling core in a single step, in an upper right lateral incisor. Moreover, it describes the advantages and indications of the post-and-core technique, also called “monobloc” which can be used in both anterior and posterior teeth. This protocol minimizes the adhesive interfaces, the chair time, and the steps of the clinical procedure.

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Técnica de mascaramento de substrato escurecido com lente de contato dental cimentada sobre faceta menos translúcida

Prosthesis and Esthetics in Science ◽

10.24077/2020;1037-3845 ◽

2020 ◽

Vol 10 (37) ◽

pp. 38-45

Author(s):

Lara Pepita de Souza Oliveira ◽

Rebeka de Oliveira Reis ◽

Ely Moacyr de Souza Portela ◽

Sybilla Torres Dias ◽

Cristiane Maria Brasil Leal

Keyword(s):

Phosphoric Acid ◽

Composite Resin ◽

Intermediate Structure ◽

Dental Ceramics ◽

Central Incisor ◽

Universal Adhesive ◽

Patient Reported ◽

Satisfaction With Treatment ◽

Natural Teeth ◽

Smile Aesthetics

Dental ceramics have an excellent ability to reproduce natural teeth appearance, but once the substrate has an altered coloration, it is necessary to mask this intercurrence, considering the characteristics of the ceramic and cement selected. This article aims to present a clinical case of rehabilitation with ceramic laminates to mask a darkened central incisor by planning a more opaque porcelain structure under a translucent contact lens. A female patient sought dental care complaining of dissatisfaction with smile aesthetics. It was clinically identified the presence of a Class IV darkened restoration in composite resin in element 11. In treatment planning harmony in the shape and color of elements 11 and 21 was aimed at through lithium disilicate lenses. An opaque intermediate structure was used to cover the darkening in tooth 11. The double molding technique was performed to obtain the working model. Prior to cementing, the surfaces were treated. In ceramics, conditioning with 10% hydrofluoric acid and 37% phosphoric acid, silane application and universal adhesive; in dental substrate, conditioning with 37% phosphoric acid and application of universal adhesive were performed. In laminates definitive cementation Allcem Venner cement was chosen. Patient reported satisfaction with treatment final aesthetics. Thus, cementation technique of a translucent laminate over an opaque facet is a good option for masking substrates with darkened coloration.

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Cirurgia de aumento de coroa clínica e confecção de facetas diretas em resina composta orientadas por mock-up.

Full Dentistry in Science ◽

10.24077/2020;1245-cit2433 ◽

2020 ◽

Vol 12 (45) ◽

pp. 24-33

Author(s):

Fábio Shiniti Mizutani ◽

Atila de Freitas ◽

Adriano Sapata ◽

Claudio Sato

Keyword(s):

Case Report ◽

Composite Resin ◽

Treatment Plan ◽

Diagnostic Information ◽

Good Treatment ◽

Restorative Dentistry ◽

Laboratory Technician ◽

Crown Length ◽

Anterior Teeth ◽

Anterior Posterior

Keeping in mind the final result is the basis of any type of treatment, especially those in which the morphology, size and proportion of the anterior teeth will be changed. This is where a good treatment plan based on a diagnostic wax-up tested with a mock-up and approved by the patient becomes crucial. This case report aims to exemplify how to transfer the diagnostic information to the patient’s mouth and direct it not only to the restorative dentistry, but also to the surgeon when performing the crown length. Diagnostic waxing was performed by the laboratory technician, obeying anterior posterior incisal and gingival criteria and curvatures, which were transported to an aesthetic guide through mock up to mark the surgical points. Then, surgery to increase the clinical crown with bone access and after healing, direct venners in composite resin also guided by waxing. In conclusion, a workflow can be established using the wax-up / mock-up that serves as a guide for the periodontist in the approach to surgical lengthening of the crown and for the rehabilitator who uses it to produce changes in the shape of dental dimensions .

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