XSS Preventing.

Hi Guys, I have a question if you have any knowledge about this please let me know. I getting data from a form with POST method like following. $x = htmlentities($_POST['y']); . After getting all form daha I save them into DB, I used mysql_real_escape_string. I have an page which show the information that I have save into DB. But If I don't use html_entity_decode, there will encodding and charset problems. I can't set htmlentities charset parameters because this function does not have Turkish Charset support. The question is that, after saving data into DB with using htmlentities, in the information page if I use html_entity_decode function still there is an XSS risk or not? . html_entity_decode function get back all risk again? Please help. Thanks. Caner.