Guidelines for anterior cantilever distance?

Last Updated: Jul 17, 2017

I would like to treatment plan a patient for 2 splinted implants with an anterior cantilever. The implants are in 47, 46 sites. How do I determine how long I can make the anterior cantilever? What are the guidelines to determine this?

10 Comments on Guidelines for anterior cantilever distance?

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Dr. J-Bob

07/17/2017

Personally, I never go beyond a single pontic in either a mesial or distal extension.

Dan

07/17/2017

There are so many variable parameters in this game such as bone quantity and quality,implants and crowns dimentions ,type of occlusion ecc.to my opinion its impossible to have,up to date, an approved scientific answer to your question.whatever will be your choice,it's a bet and you'll need to be very very lucky. Wish you all the best.

Montana

07/17/2017

Agreed, if only two implants, one tooth anteriorly. If three or more implants in an arc, possibly more if they are incisor pontics, but the opposing structure is a big factor.

Gregori Kurtzman, DDS, MA

07/17/2017

What teeth are missing being replaced with pontics? What opposes the implants and is this a male or female patient?

Aziz Amro

07/17/2017

Thank you for your questions Female Missing 45&44 Opposing are implant and natural tooth

Dennis Flanagan DDS MSc

07/17/2017

There has been some published work on this. To avoid prosthetic and support complications make the cantilever no more than 8mm.

Dan

07/18/2017

Dear colleague, I do not agree with this indication. there is no scientific evidence based indication to this issue. any number will be a belly decision. in my opinion it is better to avoid the cantilever if possible if not,do it as small as possible and.....hope for the best.. unfortunately we still have a lot of improvised clinical behavior in our daily work,we are not yet in the definitive absolute science zone. if you will ask 10 colleagues for their opinion, you'll get 20 answers for every issue... Best wishes..

Pedro

07/18/2017

Anterior cantilever guidance should be the same as posterior ( i.e. AP spread x 2). If possible oclusion should be given to the implant supported teeth and not on the Pontics. As every case it also depends on the type of oclusion, opposing arch, implant length, age and gender and the restorative materials you use. Good luck. Best JP

Gregori Kurtzman, DDS, MA

07/18/2017

IMHO you should not cantilever two teeth mesial to the implants the span is too long. Best to place another implant at 44 then place a bridge.

dario

07/18/2017

why don't try with the anterior in a mesially tilted position ? If it would be possible to have the head of implant near the region of the second bicuspid (45), you might finalize with a conventional bridge ( 47-x-45 )

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