Twinblock 7 Appliances Twinblock The Twin-Block appliance is the appliance of choice for correcting a skeletal Class II in the permanent dentition. It can be fabricated to be removable, fixed-removable, or totally fixed. Before Before After After Subscribe For Upcoming Courses Success! Email Subscribe Phone 1-800-406-2366 Email info@cfoo.com Share this:TwitterFacebookLike this:Like Loading...