Currently, only 3M sells the special foam ridged design available with the 1120 model. No matter how well you clean your animal's teeth or what chews you give your dog, as they age most will need dental cleaning performed from your vet. Infections eat the groups immune system and cause illness. https://Projectblueberryserver.com/index.php/Ace_Your_Dentist_Exam_-_8_Back-To-School_Tips_For_Healthy_Smiles