All types of climbing moves are used in bouldering, but dynamic movement is its cornerstone. When bouldering you will push your limits of power more than endurance, so often you won't be able to reach the next hold without dynoing. Even when you could manage a move by stretching, without lunging, a dyno may save you strength.
Good climbers blend static and dynamic technique when appropriate, climbing with a flowing movement.
In all cases, the deadpoint is the moment that your center of gravity stops moving up and begins to drop. To start the move, quickly pull your body into the rock with your arms. As your body moves in and up, release your hand and reach for the next hold, latching the hold right at, or a moment before, your momentum stills. Five quick tips for most big dynos and deadpoints. Propel yourself with your legs, not arms.