Comparison of feldspathic veneer surface treatments on ceramic bracket SBS, ARI and surface roughness after different debonding/polishing methods: An in vitro study

2021 ◽  
Author(s):  
Cecília Sued Leão ◽  
Amanda Cunha Regal de Castro ◽  
Flavio Mendonça Copello ◽  
Carlos Nelson Elias ◽  
Terumitsu Sekito Junior ◽  
...  
Keyword(s):  
Surface Roughness ◽  
In Vitro Study ◽  
Surface Treatments ◽  
Vitro Study ◽  
Veneer Surface ◽  
Ceramic Bracket

scholarly journals Effect of surface roughness on amalgam repair using adhesive systems

2002 ◽  
Vol 13 (3) ◽  
pp. 179-183 ◽  
Author(s):  
Marcelo Giannini ◽  
Luis Alexandre Maffei Sartini Paulillo ◽  
Gláucia Maria Bovi Ambrosano
Keyword(s):  
Surface Roughness ◽  
Bond Strength ◽  
Shear Bond Strength ◽  
In Vitro Study ◽  
Surface Treatments ◽  
Vitro Study ◽  
Adhesive Systems ◽  
Diamond Bur ◽  
Effect Of Surface

The objective of this in vitro study was to evaluate the effect of three surface treatments and two adhesive systems on the shear bond strength of old and freshly placed amalgam. The results suggested that the intact amalgam showed a significantly higher strength than repaired groups and the strongest repaired specimens were made when the amalgam surfaces were roughened with a diamond bur or microetcher. The adhesive systems showed no significant differences on bond strength with the same superficial texture.

scholarly journals Impact of Different Surface Treatments on Flexural Strength and Surface Roughness of Zirconia Implant Material: An In Vitro study

2021 ◽  
Vol 12 (1) ◽  
pp. 38-41
Author(s):  
Shreya Gupta ◽  
Mohammad Jalaluddin ◽  
Karthik Kannaiyan ◽  
Aradhana Rathod ◽  
KV Rahul Ramesh ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Flexural Strength ◽  
In Vitro Study ◽  
Surface Treatments ◽  
Vitro Study ◽  
Implant Material ◽  
Zirconia Implant

Shear bond strength of metal/ceramic Interface after different surface treatments: an in vitro study. Resistência ao cisalhamento da interface metal/cerâmica após diferentes tratamentos de superfície: estudo in vitro

2013 ◽  
Author(s):  
Sílvia Fontes Do Amaral Pereira
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
In Vitro Study ◽  
Surface Treatments ◽  
Vitro Study ◽  
Metal Ceramic

O objetivo do presente estudo in vitro foi verificar, através de teste de cisalhamento, a resistência de união da liga Wironia®light, à base de níquel-cromo sem berílio, sujeita a diferentes tratamentos de superfície, às cerâmicas Vita VM13 e Noritake. Foram confeccionados oitenta espécimes cilíndricos metálicos, com o auxílio de uma matriz de aço, nas dimensões de 4 mm de diâmetro por 4 mm de altura. Os espécimes foram divididos em oito grupos (n=10), de acordo com o tipo de tratamento superficial aplicado à liga metálica e com o tipo de cerâmica testada. Estes foram avaliados de acordo com os critérios de resistência ao cisalhamento e, com o auxílio de microscopia óptica, foi avaliada a área de cerâmica remanescente aderida ao metal após a fratura. Os corpos-de-prova do G6 (fabricados em Cerâmica Noritake com jateamento-26,401 ± 11,637 MPa) apresentaram maior resistência ao cisalhamento (p> 0,05) enquanto que os menores valores foram registrados no G4 (Cerâmica Vita com utilização de broca-13,440 ± 7,766 MPa). G6 (19425,4 μm2) apresentou a maior área de cerâmica aderida ao metal (p> 0,05) enquanto que o G4 (2310,2 μm2) apresentou a menor área. Concluiu-se que G6 obteve os valores mais altos de resistência ao cisalhamento e de remanescente cerâmico aderido à superfície metálica enquanto que o G4 obteve os valores mais baixos. Descritores: Restaurações metalo-cerâmicas; ligas de níquel-cromo;porcelana dentária.

scholarly journals The behaviour of composites, glass ionomers and compomers in erosive conditions – in vitro study

2014 ◽  
Vol 60 (5) ◽  
pp. 200-203
Author(s):  
Andreea Borş ◽  
Cristina Molnar-Varlam ◽  
Melinda Székely
Keyword(s):  
Surface Roughness ◽  
Wear Resistance ◽  
Erosive Wear ◽  
In Vitro Study ◽  
Vitro Study ◽  
Initial Surface ◽  
Dental Filling ◽  
Filling Materials ◽  
Restorative Materials

Abstract Objective: The aim of this in vitro study was to evaluate the influence of erosive conditions on the wear resistance of aesthetic direct restorative materials. Methods: Six dental filling materials were tested: two composites (Filtek Z550 and X-tra fil), two compomers (Dyract Extra and Twinky Star) and two glass ionomers (Ketac Molar and Fuji II LC). Twenty disks (10mm×2mm) of each material were prepared (n=120) and kept in artificial saliva at 37˚C for 24 hours. Specimens were cycled in acidic soft drink (Coca-Cola) 5×/day, for 5’, over 30 days. Initial surface roughness ISR (Ra-μm) and final surface roughness FSR were measured using a profilometer. The wear rate was calculated as difference of final minus the initial roughness (ΔSR=FSR-ISR). For statistical analysis t-test and one-way ANOVA test were used by GraphPad Prism version 5.03 statistical software. The level of significance was set at p<0.05. Results: The erosive wear rates (mean±SD, μm) after exposure to acidic beverage were: 0.30±0.03 (Ketac Molar), 0.28±0.04 (Fuji II LC), 0.27±0.00 (Filtek Z550), 0.23±0.01 (X-tra fil), 0.20±0.00 (Twinky Star) and 0.14±0.01 Dyract Extra, respectively. There were significant differences between the tested materials (p<0.05). Conclusions: Dental filling materials had different behaviour under the same erosive condition, however all investigated aesthetic restorative materials showed surface degradation. These findings suggest that erosive wear resistance of tooth coloured restoratives could influence their longevity in intraoral acidic conditions. Acknowledgements: The study was supported by the Internal Research Grant no. 5/30.01.2013 of the University of Medicine and Pharmacy of Tirgu Mureş.

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