scholarly journals Radiopacity evaluation of composite restorative resins and bonding agents using digital and film x-ray systems

2012 ◽  
Vol 06 (02) ◽  
pp. 115-122 ◽  
Author(s):  
Bengi Oztas ◽  
Sebnem Kursun ◽  
Gul Dinc ◽  
Kıvanc Kamburoglu
Keyword(s):  
Composite Materials ◽  
In Vitro Study ◽  
Composite Resins ◽  
Human Tooth ◽  
Dental Resin ◽  
Bonding Agents ◽  
Dentin Bonding ◽  
Dentin Bonding Agents ◽  
Phosphor Plates

ABSTRACTObjective: The purpose of this in vitro study was to explore the radiopacity of composite resins and bonding materials using film and phosphor plates.Methods: Nine composite dental resin specimens and human tooth slices were exposed together with an aluminium stepwedge using dental film and phosphor plates. Eight dentin bonding specimens were prepared and exposed in a similar manner. Their radiopacity on film was assessed using a transmission densitometer, and the radiopacity with phosphor plates was assessed digitally using the system’s own software (Digora). Data were analysed using one-way analysis of variance (ANOVA) and post-hoc Tukey tests (P<.05). Film and phosphor plate radiopacity values were compared using simple regression analysisResults: Excellent linear correlation was found between film and phosphor plates for both composite resins and bonding agents. The composite materials Spectrum Tph and Natural Look exhibited the highest radiopacity with film and with phosphor plates, respectively. All the dentin bonding agents tested exhibited lower radiopacity than dentin. Conclusion: Synergy, Ice, Filtek Silorane, Filtek Z250, Clearfil Majesty Posterior, Herculite Classic, Spectrum Tph, and Natural Look composite materials exhibited greater radiopacity than dentin, and all the dentin bonding agents tested exhibited lower radiopacity than either enamel or dentin. (Eur J Dent 2012;6:115-122)

scholarly journals Antibacterial Effect of Dentin Bonding Agents: (An in vitro Study)

2013 ◽  
Vol 13 (2) ◽  
pp. 228-234
Author(s):  
Mahmoud Taha ◽  
Nadia Al-Shakir ◽  
Nawal Al-Sabawi
Keyword(s):  
Antibacterial Effect ◽  
In Vitro Study ◽  
Vitro Study ◽  
Bonding Agents ◽  
Dentin Bonding ◽  
Dentin Bonding Agents

scholarly journals Evaluating The Effect of pH of Dentin Bonding Agents on Dentin in Relation to the Push-Out Bond Strength of Composites in Class I Cavities in-vitro

2020 ◽  
Vol 4 (7) ◽  
pp. OR10-OR14
Author(s):  
Sofia Ganai ◽  
S. Vijay Singh ◽  
Saurabh Gupta ◽  
Poonam Bogra
Keyword(s):  
Bond Strength ◽  
In Vitro Study ◽  
Class I ◽  
Bonding Agents ◽  
Effect Of Ph ◽  
Dentin Bonding ◽  
Dentin Bonding Agents ◽  
Self Etch ◽  
Push Out

INTRODUCTION: Today, the popularity of amalgam as restorative material has decreased due to poor esthetic characteristics and mercury contamination with composite resin materials becoming a choice among the both dentists and patients. AIM: The objective of this in-vitro study was to evaluate the effect of pH of dentin bonding agents (Adper Easy Bond and Xeno V) on dentin in relation to push out bond strength of composite restored with Filtek bulk fill posterior restorative composites.MATERIALS AND METHOD: Sixty caries free human molars with no cracks or previous restorations were used for investigation. Standard box-type Class-I Cavities of 3.5 mm x 3.5 mm and depth of 4 mm were prepared on the occlusal surface of the molars. Teeth were randomly divided into 2 groups namely Group A, Group B of 30 teeth each, according to the dentin adhesives applied i.e Adper Easy bond and Xeno V. Two bonding agents with different pH were selected for the study. One was Adper Easy Bond with Ultra mild pH of 2.7. Other was Xeno V Self etch with strong pH of <1.3. Push-out test was performed by placing specimens within a centralizing ring to ensure a centered application of the load, resting on another ring, with a central hole slightly larger than the restoration diameter. The test was performed with a universal Testing Machine to express bond strength in mega pascals (MPa), load value in Newton (N). After testing the push-out bond strength, the samples were analyzed under a stereomicroscope.RESULTS: Adper Easy bond with an ultra mild pH 2.7 is better as compared to Xeno V Self etch with strong pH of <1.3.The most common mode of failure observed with Adper was mixed fracture and cohesive dentin fracture, while in Xeno V, adhesive failure between resin and dentin and cohesive resin fracture was observed. The mean maximum force was significantly more among Adper compared to Xeno V.CONCLUSION: Comparison of dentin bonding agents in this in vitro study revealed that the push out bond strength of Adper Easy performed better than Xeno V.

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