Benson’s Case Study

Video

Inital Exam

Chief Complaints
  • Benson can’t close his lips.
  • He has a hard time chewing his food.
  • He doesn’t like to smile because he is embarrassed of his teeth.
  • Judging by looks, it seems like Benson might have developmental problems. This is not the case. He is a very sharp kid who is smart and articulate.
Diagnosis
  • Mandibular Asymmetry
  • Bi-lateral Crossbite
  • Severe Class III
  • Tongue Thrust Issues
  • Anterior Open Bite
Treatment Options
  • 2 jaw surgery- The issue here is we would have to wait until Benson is done growing before getting the surgery done. This didn’t resonate because of how long he would go without any treatment, especially with the brutal bullying culture we have in schools these days.
  • We could do an RPE and Facemask, but that seemed like an outdated option due to the technology we now have with PSL.
  • Thanks to Chris Chang’s example, I learned we could also place Buccal Shelf TADs and retract the lower arch while rotating the occlusal plane. This option would impact Benson’s life the fastest, so that’s what we chose to do!
Treatment Plan
  • Variable Torque Bracket Selection
  • Use Tongue Tamers to influence a normal swallowing pattern, keeping it from pushing on the teeth.
  • Once we place SS wires, have the 8’s extracted and place two Buccal Shelf TADs to retract the lower arch

Inital Bonding

Torque Selection

Upper
  • High Torque Upper 3’s
    • They look pretty dumped in.
  • Low Torque upper 2-2
    • Because we are using class III mechanics, we want to avoid causing the upper teeth to flare forward
Lower

As we retract the lower arch, the lower anteriors are going to want to dump in lingually.

  • Lower 2-2- Low Torque bracket reversed
    • This will keep the roots upright and the crowns upright and not just dump the crowns back or stick the roots out through the bone.
  • Lower 3s-High Torque

Initial Setup

  • I’ve placed tongue tamers Upper and Lower 2-2.
  • Initial wires are .014 CuNi
    • Notice I placed a stop in between the upper 1s to keep the wire from traveling too far and poking the patient.
    • I’ve clipped the lower wire distal to the 5s and placed a little composite to keep the wire from sliding out of the slot. (It would have also been fine to place a stop in between the lower 1s like we did on the upper.
  • I chose to hold off on any type of elastics and just let the wires do the work.

Month 3

Wire Progression

Upper: .018 CuNi
Lower:  .018 CuNi

Comments

Took the new wires all the way back to the 7’s. Taking them all the way back, we start to correct the discrepancy in height on the molars.

We are still staying away from elastics while progressing through the sequence.

Month 4.5

Wire Progression

Upper: 14×25 CuNi
Lower: 14×25 CuNi

Comments

Because these wires are rectanular, they will start to lightly exprees torque on the teeth.

We are still staying away from elastics while progressing through the wires.

Month 7

Wire Progression

Upper: 18×25 CuNi
Lower: 14×25 CuNi

Bracket Repo:

Repositioned the UR1

Month 10

Wire Progression

Upper: 19×25 Stainless Steel
Lower: 19×25 Stainless Steel

Spring

150 gram 10mm nickel titanium spring and activated it about a half a bracket of coil. (very light forces!)

Wire Tie

We have used a tie back that goes from the post on the wire to the 6s to keep any space from opening up in the posterior.

We have also continued to wire tie both the upper and lower anteriors to keep the spaces closed as well.

TADs

At 9 months in treatment, Benson is ready to have his wisdom teeth removed. Because the oral surgeon is my brother-in-law, I went in with him to place the Buccal Shelf TADs while he was already under anesthesia.

Month 12

Wire Progression

Upper: 19×25 Stainless Steel
Lower: 14×25 CuTi

Bracket Repo

Repo’d L1’s and bonded LR3

Elastics

cl III BS w/parrot

Month 13

Wire Progression

Upper: 19×25 Stainless Steel
Lower: 14×25 CuTi

Bracket Repo

Repo’d L1’s and bonded LR3

Elastics

cl III BS w/parrot

Month 14

Wire Progression

Upper: 19×25 Stainless Steel
Lower: .018 CuTi w/stop

Auxillaries

Hooked up Vector Springs to L4’s until pt is back in SS on lower

Elastics

start Upost-L3/4 bs ft w/parrot

Month 15

Wire Progression

Upper: 19×25 Stainless Steel
Lower: 19×25 Stainless Steel

Wire Tie

Lower 3-3

Comments

Space was opening up so we wire tied the lower 3-3.

As we have been retracting the lower arch, for some reason the lower 7’s were starting to super-erupt, so I took the opportunity to reposition the 7’s at this point.

Month 16

Wire Progression

Upper: 19×25 Stainless Steel
Lower: 19×25 Stainless Steel

Auxiliaries

C L6-6, reactivated springs on lower bs, K-tied upper

Month 17

Elastics

start class lll right ft w/moose

Month 18

Bracket Repo

Lower 7’s (again), UR4, UL5

Comments

At this point in treatment, he has overlap of his upper and lower teeth and he almost has his lower midlines on. This is the point in the case that I felt like that I finally knew deep in my heart that I was going to finish this case, and finish well. I’ve decided to wait until we have a little more overlap and to let things settle a little more before repositioning more brackets.

We have also placed some Caplin Hooks on the upper 6’s and 7’s so we can start some cross bite elastics.

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Month 19

Comments

It’s amazing looking at these photos taken at 19 months in treatment. His upper lip is ahead of his lower lip and he looks like he’s had a two jaw surgery just at 19 months and the treatment time.

Bracket Repo

UR1, UL1, UL4, LR4

Month 20

Comments

You can see that man is occlusions come together. Midland’s are on. We’re done retracting. I’m just wired tired the lower arch to our buckle plates just to keep the lower jaw back where it’s at while we let the occlusion settle.

Month 23

Before  & After

Case Summary

This was a tough case! I am still amazed at how we were able to impact Benson’s life through orthodontic treatment. As you look at the comparison photos, he looks like a completely different person. He no longer looks like he has developmental problems and finally has learned how to smile!
This is truly why we do what we do. We are here to change peoples’ lives and impact them for the better! Be sure to watch the video walkthrough for this case. I am able to go more in depth about the story behind Benson’s case. It’s worth the watch.

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