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

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

an abutment comprising an outer locating surface and a threaded recess;

a non-patient-removable retention member having a first end and a first skirt extending from the first end defining a first inner surface configured to engage over the outer locating surface of the abutment to form a non-patient-removable engagement to the abutment based on a retentive force of 10 to 75 pounds to convert the dental assembly to a non-patient-removable state, wherein the non-patient-removable retention member comprises a rigid material configured to provide the retentive force of 10 to 75 pounds when the non-patient-removable engagement forms to convert the dental assembly to the non-patient-removable state;

an implant comprising an upper portion and a lower portion,

wherein the lower portion comprises an angled platform and a threaded post extending below the angled platform, the threaded post configured to engage with bone or tissue in the mouth of a patient based on the threaded post;

wherein the upper portion comprises a threaded portion extending above the angled platform, the threaded portion configured to screw into the threaded recess of the abutment,

wherein the angled platform is angled between 10-35 degrees relative to a line that is orthogonal to a length of the implant from a center of the angled platform to a tip of the threaded post; and

wherein the abutment is configured to engage with a patient-removable replacement retention member to form a patient-removable engagement 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 engagement forms to convert the dental assembly to the patient-removable state, the patient-removable replacement retention member having a second end and a second skirt extending from the second end and defining a second inner surface for patient-removable engagement over the outer locating surface of the abutment, in place of the non-patient-removable retention member.

2 . The dental assembly of claim 1 , further comprising:

a cap configured for securing in a dental appliance and engaging the non-patient-removable retention member.

3 . The dental assembly of claim 1 , wherein the threaded post is angled relative to the threaded portion of the upper portion.

4 . The dental assembly of claim 3 , wherein the threaded post is angled 15 degrees relative to the threaded portion of the upper portion.

5 . The dental assembly of claim 3 , wherein the threaded post is angled 30 degrees relative to the threaded portion of the upper portion.

6 . The dental assembly of claim 3 , wherein the threaded post is angled 20 degrees relative to the threaded portion of the upper portion.

7 . The dental assembly of claim 1 , wherein the threaded post comprises a single lead thread or multiple lead threads.

8 . The dental assembly of claim 1 , wherein the threaded post comprises opposing axial cuts adapted for self-tapping into the bone or tissue.

9 . The dental assembly of claim 1 , wherein the implant has a maximum outside diameter between 1.5 mm and about 4.0 mm.

10 . The dental assembly of claim 1 , wherein the threaded post comprises two successive threads of different pitch.