Fractured tooth w/ crown

[Robert Gregg DDS]

Jeff,

Very nice case.

250 usec for “wet” homostasis is a nice option when 650 is a bit too much in the anteriors huh?

Thanks for posting!

Bob

[Swpmn]

Nice case.

Do you guys mind explaining physics/rationale behind shorter Pulse Duration for anterior vs. posterior teeth with Nd:YAG? Is it related to narrower facio/lingual dimensions of alveolar complex in the anterior?

What is “wet” hemostasis?

Thanks,

[Robert Gregg DDS]

Allen–

Pulse duration (time) approximately = zone/dimension (in microns) of thermal effect.

100 usec PD (time) approx = 100 microns (dimensional) zone of thermal effect

250 usec approx = 250 microns

etc……

So you are correct about your assumptions.  One needs to be well trained/cautioned about using long PD in thin tissue/bone–like around anterior teeth vs bulky mandibular bone.

“Wet” hemostasis is a red thrombus that also contains fibrin.  We also refer to it as a “stable fibrin clot” as such:

3 minutes immediately post op extraction and 650 usec long pulse duration (with one suture on the mesial due to torn tissue).  NOTE:  the grey fibrin strands coarsing through the clot, and the areas of thrombi.

Thanks for the great question.

Bob

(Edited by Robert Gregg DDS at 12:25 am on July 22, 2005)

[Swpmn]

Thanks, Robert, that was most helpful.

Al

[Author]

Posts