Possible Clues:

• Mouthy type born in north county Dublin works as a dental cleaner
• Sound for ice-cream company to charge for what¿s found in dentist¿s surgery
• Both shout wickedly about rookie's first sort of moustache
• *Dental checkup freebie
• Master bath staple
• Dental cleaner
• Bird, hiding its head as well to start with, could be 18
• It may be found in the master bath
• Cleaner Ruth Booth's upset
• One will clean things up, by gum!