Reverse coronal taper for implants: your thoughts?

I recently have seen an implant which has reverse coronal taper at the top of implant. These implants have a coronal portion narrower than the middle portion.  This is supposed to decrease bone loss around the coronal portion after placement. With this type of system, how do you manage the space created around the coronal portion?  Also, since this design features a decreased bone-to-implant contact in the coronal portion, will this be a problem? I would like to get your opinions about these implant designs with a reverse coronal taper. 

9 thoughts on “Reverse coronal taper for implants: your thoughts?

  1. Montana says:

    The Nobel Active RP and various clones have a smaller radius at the “micro” level than at the macro thread dimension. Therefore, tapping a large enough hole to fit the implant leaves the coronal portion in a mote or blood. Integration is fine but die back is a pretty common sequelae; predictably more so in the mandible given the cortical plate.

    Reverse coronal taper makes sense, except for that osteotomy problem; tough to place them without a wide enough hole.

  2. Chris W. says:

    Perhaps this is an example of fixing a problem that does not exist? I mean, bone loss in this area may be do to other factors such as tissue thickness etc.
    The worry I have is that we don’t know if this change will be a benefit or not. Lots of experimentation being done in our offices at our expense for their ideas. Who wants to go first?

  3. Bruce A Smoler says:

    Here’s an idea, for softer max bone (D3/D4) the osteotomy is the size of the reduced taper coronal portion while the body of the implant is undersized for higher Initial Implant Stability AND allowing no gapping or space at the coronal portion. I experience this with the NeoDent drive implants where the bone/implant torque value is HIGH due to the slightly undersized body of the implant and the slightly narrower reduce diameter coronal portion seems to fit snuggly without gapping. Follow my explanation? Hope this helps. Bone specific and drilling specific protocols differentiate this from other ‘similar’ systems.

  4. Montana says:

    Back in the 90’s, one of the big players experienced problems with an implant design that produced too much pressure on the bone mid-body. High failure rate due to pressure necrosis. The design disappeared quickly without much response from the company. Clearly we have to be careful tinkering with a very successful standard and we should question the need for another 1/2% improvement. My desire is for a healthy 2 mm of bone thickness around the implant, placed with minimal trauma to the site.

  5. John Stone says:

    I suggest that you check out Sweden and Martina implants, used in Europe for decades and in the US now. Designed using papers by Dr Ignacio Loi, MD DDs

  6. Dr ramiz says:

    Is there some way i can upload the image here?? Its j dental care implants from italy… the brand name is jd evolution plus

    • OsseoNews says:

      To add a photo to comments, you must log in to first, and then go to the Post comment section at the bottom of the post, where you will see a button to upload photos to the comments section. If you don’t have an account yet with, you can register


Comments are closed.

Posted in Clinical Questions, Surgical.
Bookmark Reverse coronal taper for implants: your thoughts?

Videos to Watch:

Single Tooth Replacement with Implants in the Esthetic Zone

Dr. Jack Hahn provides tips and reviews cases for implant placement in the esthetic zone.[...]

Watch Now!
Surgical Consideration for the Flapless Approach

In this video, Dr. Jack Hahn discusses and presents cases to review the surgical considerations[...]

Watch Now!
Bond Apatite: Socket Preservation Cases

These 2 videos show the use of Bond Apatite in socket preservation cases, one with[...]

Watch Now!
3D Guided Implant Placement

The placement of multiple implants in this case was helped thru the use of 3d[...]

Watch Now!
Ridge Splitting Cases in Narrow Alveolar ridge

This videos shows ridge splitting, which when combined with bone expansion, is an effective technique[...]

Watch Now!
Placement of 4 Implants and Cement-Retained Bridge

The treatment plan was to extract the lower incisors, canines, and lower premolar and place[...]

Watch Now!
Failing Bridge Replaced with Dental Implant Supported Bridge

Ahe patient presented with a failed dental bridge from the upper right canine to the[...]

Watch Now!
Lateral Sinus Augmentation with CGF

Following membrane elevation with the lateral approach, and confirmation of an intact sinus membrane, concentrated[...]

Watch Now!
Titanium Mesh for Ridge Augmentation

The use of titanium mesh is a reliable method for ridge augmentation to provide adequate[...]


Watch Now!
Implant Grafting Techniques: Demineralized Sponge Strip and Tunneling

This video reviews several unique grafting and surgical techniques, including the use of demineralized cancellous[...]

Watch Now!
Mandibular Fixed Screw Retained Restoration

This video shows the use of a surgical guide for a mandibular fixed screw retained[...]

1 Comment

Watch Now!
Clinical Tip for Fixation of a Collagen Membrane

This video provides a clinical tip with regards to the fixation of a collagen membrane.[...]

Watch Now!