oral b 3709 replacement brush heads

Many reviewers say the heads provide deep, effective cleaning while remaining gentle. Several reviewers also report that a head typically lasts around three months before needing replacement.

Listings describe round, tooth‑by‑tooth heads with specially engineered bristles. Some heads use advanced filament or “X‑Filament” designs to deliver a floss‑like clean or extra plaque removal, while others feature extra‑soft bristles for gentler cleaning.

Common pack counts shown in listings include 3-, 5-, 6- and 8-count packages.

Yes. Some replacement heads are described as having extra‑soft bristles for a gentler clean, and reviewers frequently describe these models as very soft and comfortable for sensitive gums.

Listings commonly show suggested ages such as “3 years and up,” “4 years and up,” or “18 years and up.” Warnings you may see include “Not for children under the age of three,” “Adult use only,” and notes about small parts—always review the product’s warnings before use.