Text this: Effects of aging on mechanical properties of composite restoratives: A depth-sensing microindentation approach

 _    _      ___     _____       ___      ____    
| || | ||   / _ \\  |  __ \\    / _ \\   |  _ \\  
| || | ||  | / \ || | |  \ ||  / //\ \\  | |_| || 
| \\_/ ||  | \_/ || | |__/ || |  ___  || | .  //  
 \____//    \___//  |_____//  |_||  |_|| |_|\_\\  
  `---`     `---`    -----`   `-`   `-`  `-` --`