scholarly journals Effect of Finishing Techniques on the Junction Between the Composite Restoration and the Dental Enamel

2017 ◽  
Vol 54 (2) ◽  
pp. 375-379
Author(s):  
Gianina Iovan ◽  
Simona Stoleriu ◽  
Galina Pancu ◽  
Irina Nica ◽  
Andrei Victor Sandu ◽  
...  
Keyword(s):  
Composite Resin ◽  
Dental Enamel ◽  
In Vitro Study ◽  
Optical Microscope ◽  
Fine Carbide ◽  
Fine Diamond ◽  
The Impact ◽  
Scanning Electron ◽  
Composite Restoration

The aim of this in vitro study was to to evaluate the impact of finishing procedures on the enamel adjacent to composite restorations and to assess if the resistance of the enamel-resin junction to leakage is affected by the use of these instruments. The surfaces of enamel at the joint with composite were observed by scanning electron microscopy, then the microleakages at the enamel margin was assessed using an optical microscope. Finishing with extra-/ ultra-fine carbide burs and extra-fine diamond burs produced a superficial abrasion to the adjacent enamel and did not seem to have a significant influence on the sealing ability of composite resin.

Influence of prophylaxis on the microleakage of sealants: in vitro study

2002 ◽  
Vol 26 (4) ◽  
pp. 371-375 ◽  
Author(s):  
Ana Beatriz Alonso Chevitarese ◽  
Orlando Chevitarese ◽  
Ivete Pomarico Ribeiro de Souza ◽  
Roberto Braga de Carvalho Vianna
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
In Vitro Study ◽  
Optical Microscope ◽  
Vitro Study ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Scanning Electron

The aim of this study was to evaluate the influence of prophylaxis on the sealants microleakage in 30 premolars divided into: Group A, Group B and Group C. The teeth were analyzed using the optical microscope (OM) and at scanning electron microscope (SEM). There was a statitical significant difference among the groups regarding the presence of microleakage, but not with the presence of tags.

In vitro Comparative Study on the Effect of Carbonated Beverages on Dental Enamel

2018 ◽  
Vol 68 (12) ◽  
pp. 2823-2828 ◽  
Author(s):  
Cornelia Florentina Biclesanu ◽  
Stefan Manea ◽  
Oana Alexandrescu ◽  
Dawod Nazem ◽  
Anna Maria Pangica ◽  
...  
Keyword(s):  
Dental Enamel ◽  
Physical And Mechanical Properties ◽  
In Vitro Study ◽  
Optical Microscope ◽  
Nail Polish ◽  
Enamel Erosion ◽  
Structural Loss ◽  
Bacterial Plaque

In recent decades, significant worldwide increase in the consumption of acidic beverages, such as soft drinks and fresh fruit extended to all categories of consumers but especially to young people. The purpose of this study is to demonstrate the effect of some of the most consumed beverages on dental enamel in order to draw an alarm signal. The study was performed in vitro on 18 extracted teeth. Half of the coronary enamel was covered with a nail polish, then the teeth were submerged in hermetic containers with the most commonly used beverages: Coca Cola, sugar-free Coca Cola, orange juice, red wine, green tea, Red Bull for one hour, one day, 3 days and 7 days. Evaluation of the samples at one hour, one day and 3 days was performed by examination at the optical microscope. After 7 days, the insulating nail polish was removed and the microstructure of the enamel exposed and not exposed to acidic action, was examined under the scanning electronic microscope (SEM). Results showed that because of the high acidity of the beverages used in the study, the surface of the enamel showed prisms changes, structural loss of the enamel, which can lead to cracks and structural disintegration with the reduction of the physical and mechanical properties of the enamel. The results obtained in this in vitro study should be reinterpreted and associated with the in vivo situation where biological factors such as bacterial plaque and saliva buffering capacity are likely to reduce the potential for erosion of beverages. Consequently, enamel erosion may be lower compared to the measurements found in this study.

scholarly journals Evaluation of marginal sealing ability of self-adhesive flowable composite resin in Class II composite restoration: An in vitro study

2018 ◽  
Vol 21 (4) ◽  
pp. 363 ◽  
Author(s):  
Preeti Mishra ◽  
Shikha Jaiswal ◽  
Vineeta Nikhil ◽  
Sachin Gupta ◽  
Padmanabh Jha ◽  
...  
Keyword(s):  
Composite Resin ◽  
In Vitro Study ◽  
Class Ii ◽  
Vitro Study ◽  
Flowable Composite ◽  
Sealing Ability ◽  
Composite Restoration

Restoration-enamel interface with argon laser and visible light polymerization of compomer and composite resin restorations: a polarized light and scanning electron microscopic in vitro study

2003 ◽  
Vol 27 (4) ◽  
pp. 353-358 ◽  
Author(s):  
J. Hicks ◽  
R. Ellis ◽  
C. Flaitz ◽  
G. Westerman ◽  
L. Powell
Keyword(s):  
Composite Resin ◽  
Polarized Light ◽  
In Vitro Study ◽  
Argon Laser ◽  
Electron Microscopic ◽  
Scanning Electron Microscopic ◽  
Composite Resin Restorations ◽  
Scanning Electron ◽  
Resin Restorations

This polarized light (PL) and scanning electron microscopic (SEM) in vitro study investigated the effect of argon laser (AL) and visible light (VL) polymerization on the interfaces between compomer and composite resin restorations and the enamel cavosurfaces. Surface topography by SEM revealed a smooth transition between the restorative materials and adjacent enamel surfaces with no microspaces between the restorations and enamel surfaces. The enamel surfaces showed relatively smooth surface coatings with AL curing, compared with exposure of etched prism endings with VL curing. The restoration-enamel interface by PL showed an intimate relationship between the restorative materials and the cavosurface enamel. No differences were found between AL and VL polymerization.With the restoration-enamel interface by SEM, compomers and composite resins were adapted closely to the cavosurface enamel and tags of restorative material protruded into the adjacent cavosurface enamel. Both VL and AL polymerization of compomers and composite resin restorations in vitro produced closely adapted restorations with intimate restorationenamel interfaces. Such restoration-enamel interfaces may provide a certain degree of resistance against secondary caries formation, and this may be enhanced by the caries protective effect of argon laser irradiation.

EFFECT OF PREHEATING ON MICROLEAKAGE AND MICROHARDNESS OF COMPOSITE RESIN (AN IN VITRO STUDY)

2016 ◽  
Vol 41 (1) ◽  
pp. 4-11
Author(s):  
Soliman Eman M ◽  
Elgayar Ibrahim L ◽  
Kamar A Adel A
Keyword(s):  
Composite Resin ◽  
In Vitro Study ◽  
Vitro Study

scholarly journals SEM Analysis of Enamel Abrasion after Air Polishing Treatment with Erythritol, Glycine and Sodium Bicarbonate

Coatings ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 549 ◽  
Author(s):  
Bruna Sinjari ◽  
Gianmaria D’Addazio ◽  
Martina Bozzi ◽  
Manlio Santilli ◽  
Tonino Traini ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Sodium Bicarbonate ◽  
Air Flow ◽  
Dental Enamel ◽  
In Vitro Study ◽  
Sem Analysis ◽  
Medical Systems ◽  
Air Polishing ◽  
And Control

The aim of this in vitro study was to evaluate the enamel surface topography after treatment with three air polishing powders: Glycine (A), erythritol (B), and sodium bicarbonate (C) (Air Flow Soft, Plus and Classic powders, EMS Electro Medical Systems S.A., Nyon, Switzerland). Fifteen extracted incisors were randomly divided into three groups of five teeth each, A, B and C, respectively. The teeth were blocked in plaster bases, washed, dried and half-covered with polytetrafluoroethylene strips before treatment. In this way, each half-treated dental element became test and control of itself. Comparative statistical analysis of Rq (geometric average of the deviations occurring in roughness profile) was performed. The scanning electron microscope (SEM) analysis showed different degrees of surface roughness between the groups, decreasing after treatment. In addition, a statistically significant reduction p < 0.05 was present in group C (Rq mean non-treated 108.17 µm, 95% CI: 97.29–124.01 and Rq mean treated 86.78 µm, 95% CI: 80.63–93.70). A decrease in surface roughness post-treatment was not observed in group A and B. Therefore, it may be concluded that the air flow powders tested herein can be used on dental enamel to reduce the surface roughness due to function and the action of dental therapies.

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