Gum® Dome Trim® Soft/Full 456. Sunstar. For effective plaque removal. Healthy Gums. Healthy Life®. Gum® toothbrushes are recommended by dental professionals to help you maintain good oral health. Dome Trim®: For effective plaque removal. 1. Comfort grip improves control while brushing. 2. Raised center Dome Trim® bristles clean below the gumline. 3. Shorter outer bristles clean tooth surfaces and areas at the gumline. ©Sunstar Americas, Inc. 1-888-777-3101 or www.gumbrand.com.