1 st Plain Molar Bands ROTH Rx: Upper Right [6R-PB0UR], Upper Left [6R-PB0UL], Lower Right [6R-PB0LR], Lower Left [6R-PB0LL]. MBT Rx: Upper Right [6M-PB0UR], Upper Left [6M-PB0UL], Lower Right [6M-PB0LR], Lower Left [6M-PB0LL]. 2 nd Plain Molar Bands ROTH Rx: Upper Right [7R-PB0UR], Upper Left [7R-PB0UL], Lower Right [7R-PB0LR], Lower Left [7R-PB0LL]. MBT Rx: Upper Right [7M-PB0UR], Upper Left [7M-PB0UL], Lower Right [7M-PB0LR], Lower Left [7M-PB0LL].