Retaining screw with rententive feature
View Patent ↗A dental retaining screw used to secure dental components, such as abutments, copings, and prosthesis to dental implants. The screw having a locking mechanism adapted to prevent the screw from loosening during shipping or while experiencing vibrations. The locking mechanism includes a locking component and biasing members located in the head portion of the retaining screw.
1. A dental kit attachable to a coronal end of a dental implant, the kit comprising:
a dental component having an internal cavity with a seating surface and a locking mechanism; and
a dental retaining screw having a head adapted to engage the seating surface of the dental component and tighten the dental component to the dental implant, the head including a moveable locking component and a biasing member, wherein the biasing member biases the locking component against the locking mechanism to prevent the retaining screw from loosening while the retaining screw is threadably engaged with the dental implant.
2. The dental kit of claim 1 wherein the locking mechanism is located on the internal cavity and is one of a partial sphere, square, groove, channel, or indentation.
3. The dental kit of claim 2 wherein the locking component is a ball bearing, and the biasing member is a spring.
4. The dental kit of claim 3 wherein the ball is formed of ceramic, and the spring is formed of titanium.
5. The dental kit of claim 1 wherein the dental retaining screw includes a bore housing the locking component and biasing member.
6. The dental kit of claim 5 wherein the internal cavity has a longitudinal axis, and the bore is perpendicular to the axis.
7. The dental kit of claim 6 wherein the biasing member biases the locking mechanism partially out of the bore and into the internal cavity to engage the locking mechanism.
8. The dental kit of claim 7 wherein the biasing member is a coiled spring, and the locking mechanism is a ball bearing.