Erbium Crown Prep "Troughing" - Laser Dentistry Forum

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January 5, 2003 at 3:19 am #3346 Reply

Swpmn
Spectator

[img]https://www.laserdentistryforum.com/attachments/upload/williamsa10.JPG[/img]

Hi Girls and Guys:

Take a look at this photo and grade this impression. How would you rate the impression? Terrible, acceptable, A+ or throw it away and start over?

I took this impression using the Waterlase for gingival retraction and graded it “acceptable”. My technician had no trouble reading the margins and the crown fit fine. But notice how rough and choppy the retraction looks.

Is anyone getting better results using an Erbium laser only for soft tissue retraction? If so, can you post a pic and offer suggestions? This is the best I can do with my Erbium. Are most people using Diode lasers for retraction and are the results a lot better?

Al

January 5, 2003 at 6:00 am #10422 Reply

Glenn van As
Spectator

Hi Al: Nice prep, I dont like the erbium for crown troughing for a few reasons……..

1. It is slow compared to the diode or argon where you can create a trough around the tooth. The erbium actually causes the tissue to be planed away whereas the dedicated soft tissue lasers create a trough.

2. It bleeds and requires a hemostatic agent.

3. It can nick your margin and cause notches depending on the setting.

I will at times put in Expasyl to laterally expand the tissue.

Check out this diode case………

Glenn

January 5, 2003 at 6:18 am #10423 Reply

Glenn van As
Spectator

Here is a second case shot with the scope using the Argon laser to retract followed by Expasyl.

There are other less expensive ways to expand the trough but there is no oozing, a better trough and no risk of damage to the margins with the diode , argon or Nd Yag.

I havent had much success with the Erbium troughing, its the way it cuts that makes it difficult in my hands at least.

Glenn

January 5, 2003 at 7:13 pm #10424 Reply

Swpmn
Spectator

Glenn:

Thanks for your help and the great photos.

Basically confirms what I suspected and am experiencing down here in the Sunshine “Dangling Chad” State.

Al
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