Fixed detachable dental attachment device, assembly and methods of using the same

A method of securing a dental appliance in a subject's mouth comprising the steps of:

• providing an abutment comprising an upper portion and an attachment portion, wherein the upper portion, having a convex outer surface, comprises an open end and a socket;
• inserting a ring into the socket;
• attaching the abutment into an existing non-vital tooth root, implant, or intermediary abutment through the attachment portion;
• aligning a cap over the abutment, wherein the cap has an attachment portion rigidly secured to or integral with a dental appliance and body portion next to and extending from the attachment portion, the body portion having an open end, a retention head and an inner cavity facing away from the dental appliance and forming an annular wall that surrounds the retention head;
• engaging the retention head through the ring and into the socket of the abutment and engaging a concave lower lip of the annular wall of the body portion over the convex outer surface of the abutment thereby securing the cap onto the abutment, wherein an external surface of the ring contacts the socket and an internal surface of the ring contacts the retention head, whereby the retention head is in swivel engagement in the ring, the concave lower lip of the annular wall is in direct swivel engagement with the convex outer surface of the abutment, and the dental appliance is secured to the abutment solely by the body portion of the cap.

A fixed detachable dental attachment device, comprising:

• a cap having a first attachment portion adapted to be rigidly secured to a dental appliance and a body portion next to the first attachment portion, the body portion having an open end, a retention head and an inner cavity facing away from the attachment portion and forming an annular wall that surrounds the retention head, the annular wall having a concave lip, wherein the first attachment portion and body portion are aligned along the central longitudinal axis of the cap;
• an abutment comprising an upper portion with a convex outer surface, the upper portion having an open end and a socket for receiving the retention head;
• and
• a ring snap fit into the socket and positioned between the socket and the retention head, the ring having an upper portion and a lower portion, wherein the retention head has a stem and an enlarged head portion of at least partially spherical shape which is snap fit into the lower portion of the ring and in swivel engagement with an opposing surface of the lower portion of the ring, and the concave lip of the annular wall of the body portion of the cap is in direct swivel engagement over the convex outer surface of the abutment to secure the cap onto the abutment, whereby the dental appliance is secured to the abutment solely by the body portion of the cap.