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                                  Effect of P60 & Filtek P90 Composite on microeakage of Cl II Composite resin restoration (Invitro) 
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								    Haleh Heshmat        ,   M HORIZAD GANJCAR *        ,  P BEHROZI     ,  M LESANI      | 
								
								
								  | dental branch islamic azad university  | 
								
								
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                                  Abstract:       (6399 Views)  | 
								
								
								  Abstract: 
Backgroud and Aim: microleakge is one of  the most common cause of failure  in restorative dentistry in this study the microleakge of filtek p90 , filtek p60 was evaluated and compared . 
Materials and Methods: In this experimental study, on 48 premolar teeth  standardized class II MOD preparations were made cervical margin of mesial preparation  were  1mm above  the CEJ  and 1 mm and the distal preparation were 1 mm below the CEJ  Samples divided in to 3 groups of sixteen teeth. 
A group: teeth were filled with filtek silorane (3M ESPE , USA) and silorane  system adhesive self-etch primer and bond. 
B: teeth were filled with filtek silorane and  Adper single bond plus. 
C: sixteen teeth were filled with filtek p60 and  Adper single bond plus. 
After AgNO3 dye opplicaiton microleakage were evaluated by stereomicroscope.data were statistically analyzed by  kurskal-wallis and Wilcoxon. the level of 0.05 considered significant. 
Results: The most enamel microleakage was related to C and lowest enamel microleakge was shown in A group. The  most  dentin microleakage was related to B and the lowest dentin microleakge was shown in A  group.  Microleakage was significantly different between A,  with B and C  (P‹0.05) dentin microleakage was not significant difference between B and C. 
Conclusion: Type of  composite and bonding effect to microleakage, 
the lowest microleakage was gingival margine  irrespective of the location of the margine related to group A. 
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								  | Keywords:  Microleakge, silorane based composite, silver nitrate staining | 
								
								
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                                  Type of Study:  original article |
                                  Subject: 
                                  restorative dentistry  
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