Other variables in bone screw design

In addition to threading and pitch variations, bone screws can produce holes, steps, grooves and other functions due to the precision capabilities of CNC Swiss machining. For example, different types of bone screw heads can be created to meet specific requirements:

The screw used to anchor the tooth may have a tapered head that can be pressed to replace the tooth.

Threaded screw heads can be used to lock bone screws and their attachments, such as plates, into place for greater stability.

Hexagonal screw heads are usually used to allow insertion using a screwdriver.

Swiss machined bone screws can also take advantage of different tip designs to support different screw insertion techniques:

Non-tapping screws have smooth rounded tips and are inserted by making a guide hole in the hole and tapping threads.

Tapping screws have cutting grooves so that once the screw is inserted into the pilot hole, it taps itself. For example, because cancellous bone is much less dense than cortical bone, a cancellous screw is self-tapping -- that is, when a screw is inserted, it cuts its path through the bone.

Self-drilling screws can be inserted as is without pilot holes or other preparations. The screw creates its own guide hole and is also self-attacking.

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