Dental attachment assemblies, angled implant assemblies, and methods of use

A dental assembly convertible between a patient-removable state and a non-patient-removable state by interchanging retention members, the dental assembly comprising:

• a dental appliance comprising a first recess and a second recess;
• a first cap configured to be secured in the first recess;
• a second cap configured to be secured in the second recess;
• a first implant;
• a first abutment member configured to attach to the first implant;
• a second abutment member configured to attach to a second implant;
• a first non-patient-removable retention member configured to engage within the first cap, the first non-patient-removable retention member having a first end and a continuous, unbroken skirt extending from the first end defining an inner surface engagement portion over an outer locating surface of the first abutment member to form a first non-patient removable attachment to the first abutment member based on a retentive force of 10 to 75 pounds to convert the dental assembly to a non-patient-removable state, the first non-patient-removable retention member comprises a rigid material configured to provide the retentive force of about 10 to 75 pounds when the first non-patient-removable attachment forms;
• wherein the first abutment member is configured to engage with a patient-removable replacement retention member to form first patient-removable attachment to the patient-removable replacement retention member to convert the dental assembly to a patient-removable state based on a retentive force of less than 10 pounds, wherein the patient-removable replacement retention member comprises a resilient material more resilient than the rigid material to provide the retentive force of less than 10 pounds when the patient-removable attachment forms to convert the dental assembly to the patient-removable state,
• wherein the patient-removable replacement retention member comprises a second end and a second continuous, unbroken skirt extending from the second end defining a second inner surface for patient removable engagement over the outer locating surface of the first abutment member, in place of the non-patient-removable retention member;
• a second non-patient-removable retention member configured to engage within the second cap, the second non-patient-removable retention member having a third end and a third continuous, unbroken skirt extending from the third end defining a third inner surface engagement portion configured to engage over an outer locating surface of the second abutment member to form a second non-patient removable attachment to the second abutment member based on a retentive force of 10 to 75 pounds to convert the dental assembly to a second non-patient-removable state, the second non-patient-removable retention member comprises a rigid material configured to provide the retentive force of between 10 to 75 pounds when the second non-patient-removable attachment forms;
• wherein the first implant comprises an upper portion and a lower portion;
• wherein the upper portion comprises a threaded portion configured to screw into a threaded recess of the first abutment member;
• and
• wherein the lower portion comprises an angled platform and a threaded post extending from the angled platform, the threaded post configured to engage with bone or tissue in the mouth of the patient based on a thread of the threaded post, wherein the angled platform is angled relative to a line that is orthogonal to a length of the threaded post from a center of the angled platform to a tip of the threaded post.