Wear of low-fusing dental porcelains

Deránd, Per; P, Vereby

doi:10.1016/s0022-3913(99)80014-6

Cited by 42 publications

(38 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The peculiar levels of irregularities in the surface can be related to the characteristics of the vitrification process that allows small time and temperature variations 2,6,10,18 . Condensation, cooling, multiple firing processes can produce additional leucite and this generally increases the coefficient of thermal expansion of the ceramics that in turn could also result in breach or crack on the surface.…”

Section: Discussionmentioning

confidence: 99%

“…Most of the dental ceramics developed for metal ceramic restorations contain leucite as the principal crystalline phase 10 . In this way, the cracks formed during the chemical attack, results in preferential attack of the regions with residual tensions related with the leucite or depending on the collection of particles of leucita.…”

Section: Discussionmentioning

confidence: 99%

“…When the ceramics are placed in an aqueous environment, exposure to the chemical solutions, water and other fluids may create microcracks and they start to add damaging mechanical properties 4,8,10,18-21 . Subsequently, this process changes the surface hardness and surface properties promoting plaque accumulation, wear of antagonistic structures and sometimes it may impair the aesthetics especially in the anterior region 3,15-17 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Surface degradation of glass ceramics after exposure to acidulated phosphate fluoride

Ccahuana

Özcan²,

Mesquita

et al. 2010

J. Appl. Oral Sci.

View full text Add to dashboard Cite

ObjectiveThis study evaluated the surface degradation effect of acidulated phosphate fluoride (APF) gel exposure on the glassy matrix ceramics as a function of time.Material and methodsDisc-shaped ceramic specimens (N = 120, 10/per ceramic material) were prepared in stainless steel molds (inner diameter: 5 mm, height: 2 mm) using 6 dental ceramics: 3 indicated for ceramic-fused-to-metal (Vita Omega 900, Carmen and Vita Titankeramik), 2 for all-ceramic (Vitadur Alpha and Finesse® Low Fusing) and 1 for both types of restorations (IPS d.SIGN). The specimens were wet ground finished, ultrasonically cleaned and auto-glazed. All specimens were subjected to calculation of percentage of mass loss, surface roughness analysis and topographical description by scanning electron microscopy (SEM) before (0 min) and after exposure to 1.23 % APF gel for 4 min and 60 min representing short- and long-term etching effect, respectively. The data were analyzed using two-way ANOVA with repeated measures and Tukey`s test (α=0.05).ResultsSignificant effect of the type of the ceramics (p=0.0000, p=0.0031) and exposure time (p=0.0000) was observed in both surface roughness and percentage of mass loss values, respectively. The interaction factor between both parameters was also significant for both parameters (p=0.0904, p=0.0258). Both 4 min (0.44±0.1 - 0.81±0.2 µm) and 60 min (0.66±0.1 - 1.04±0.3 µm) APF gel exposure created significantly more surface roughness for all groups when compared to the control groups (0.33±0.2 - 0.68±0.2 µm) (p<0.05). There were no significant differences in percentage of mass loss between the ceramics at 4 min (p>0.05) but at 60 min exposure, IPS d.SIGN showed the highest percentage of mass loss (0.1151±0.11). The mean surface roughness for Vita Titankeramik (0.84±0.2 µm) and Finesse® Low Fusing (0.74.±0.2 µm) was significantly higher than those of the other ceramics (0.59±0.1 µm - 0.49±0.1 µm) and Vita Titankeramik (p<0.05) regardless of the exposure time. A positive correlation was found between surface roughness and percentage of mass loss for all ceramic materials [(r=0.518 (Vitadur Alpha), r=0.405 (Vita Omega 900), r=0.580 (Carmen), r=0.687 (IPS d.SIGN), r=0.442 (Finesse® Low Fusing), r=0.572 (Vita Titankeramik), Pearson`s correlation coefficient)]. The qualitative SEM analysis showed evidence of corrosive attack on all of ceramics at varying degrees.ConclusionsThe ceramics indicated for either metal-ceramic or all-ceramic restorations were all vulnerable to surface texture changes and mass loss after short-term and long-term APF gel exposure.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface degradation of glass ceramics after exposure to acidulated phosphate fluoride

Ccahuana

Özcan²,

Mesquita

et al. 2010

J. Appl. Oral Sci.

View full text Add to dashboard Cite

show abstract

“…De esta manera el profesional debe saber claramente la indicaciones y contraindicaciones del uso correcto de cada material para cada tipo de restauración. Uno de los problemas importantes es la calidad de la superficie de trabajos en cerámica, después de la realización de ajustes (16)(17)(18)(19). La rugosidad superficial es un factor importante en la evaluación de una restauración, siendo relacionada a retención de placa bacteriana, a la abrasión de los dientes antagonistas, al manchado, a la lesión de los tejidos blandos adyacentes, como también a la propia calidad estética de las restauraciones (5,6,8,9,20,21).…”

Section: Discussionunclassified

“…Según las normas ISO 6872, el ácido acético al 4% durante 16 horas a 80°C es utilizado para las pruebas de solubilidad química para cerámi-cas dentales, esta norma establece un límite de solubilidad de <100μg/ cm 2 (1,6,14,16). Cuando estos valores son respetados, el material es considerado químicamente estable para ser utilizado en la cavidad bucal, considerando que la degradación superficial no llegaría a influenciar negativamente sobre sus caracterís-ticas mecánicas (1,4).…”

Section: Discussionunclassified

Estudio comparativo de la rugosidad superficial en cerámicas de ultra baja fusión

Vásquez¹,

Morais²,

Nishioka

et al. 2015

Rev Estomatol Herediana.

View full text Add to dashboard Cite

Estudio comparativo de la rugosidad superficial en cerámicas de ultra baja fusiónCcahuana Vásquez VZ, Morais AALO, Nishioka RS, Kimpara ET. Estudio comparativo de la rugosidad superficial en cerámicas de ultra baja fusión. Rev Estomatol Herediana. 2007;16(1): 11-15. RESUMEN El objetivo de este trabajo fue comparar la rugosidad superficial en cerámicas de baja y ultra baja fusión, después del pulido mecánico y exposición a un medio corrosivo in vitro. El análisis de la superficie (Ra) fue realizado con un rugosímetro. Se confeccionaron 72 discos, divididos en cuatro grupos según el sistema cerámico utilizado: VitadurAplha (G1), Titankeramik (G2), HeraCeram (G3) y Finesse (G4), y según el tratamiento de superficie: (A) especímenes sin tratamiento de superficie. (B) se realizó un desgaste removiendo el glaceado y pulido mecánico de la superficie. (C) especímenes fueron colocados en ácido acético. Los resultados mostraron un Ra para A: G1-0,65; G2-0,83; G3-0,82; G4-0,72. Para B: 57;29;28;87;83;98;70. El pulido mecánico mostró mayor rugosidad de superficie en comparación con el grupo que fué expuesto al medio corrosivo. Hubo diferencias significativas (p<0,05) para el G4, para la condición B.Palabras clave: PORCELANA DENTAL.

show abstract

Case report: Rehabilitation of a child with dentinogenesis imperfecta and congenitally missing lateral incisors

Millet

Viennot

Duprez

2010

Eur Arch Paediatr Dent

View full text Add to dashboard Cite

show abstract

Wear of low-fusing dental porcelains

Cited by 42 publications

References 17 publications

Surface degradation of glass ceramics after exposure to acidulated phosphate fluoride

Surface degradation of glass ceramics after exposure to acidulated phosphate fluoride

Estudio comparativo de la rugosidad superficial en cerámicas de ultra baja fusión

Case report: Rehabilitation of a child with dentinogenesis imperfecta and congenitally missing lateral incisors

Contact Info

Product

Resources

About