*A deposit of $300 is required with the rental of any of the Cavitron units. $320 if you need an insert with the unit.) Once the unit has been returned, we will return $250 of your deposit. (Or if you rented an insert with the unit we will return $260. Although we usually accept check payments, we ask that you use a credit card for easier transactions in the charging and return process. We accept Discover, Master Card, Visa, and American Express. Please contact us with the card number, name on the card, date of expiration, zip code for the card and the security code. Please do NOT send this information over the web, call our office or send a fax. For our contact information, please visit ourpage Contact Us. TL Dental Scaler