Home Page Questions and Answers Filling Can a filled tooth decay? Can a filled tooth decay? Güncelleme tarihi: 17 January 2026 Yes, if oral hygiene is poor, a new cavity can start at the junction of the filling and the tooth. Cevabı nasıl buldunuz? Happy Normal Sad Soruyu paylaşın: Can I prevent food from getting stuck between my teeth with a filling?Is it possible to inject fillers with a laser?