Marvis Aquatic Mint Toothpaste

I have purchased 6 of this product. the first 5 were filled up. the last one received is missing the top 1 1/2" of product. should i return it?

First ingredient is Sodium flouride - how is this any different from other brands?

Does this contain fluoride?

Is there supposed to be a seal on the toothpaste? Mine came without a wrapping on the outside or seal on the inside.