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  • #3504 Reply

    jetsfan
    Spectator

    I found a new use for the laser today. I was faced with removing approx a 7mm length of cast gold post from the root of #11. Removing a cemented cast post is always a difficult task. I used the laser to carefully create a trough circumferentially around the post , proceding apically in the root. Eventually I was able to place an endo explorer between the post and internal aspect of root. This created enough space so that I could wiggle the post back and forth to completly break the seal. The post was then easily removed. I took photos but I am having trouble posting them.
    Photos show the crown with part of the post in it, the root , with part of the post showing, the root after I troughed around post and finally the retrieved post segment. I will try to post photos later.

    #11919 Reply

    Great service to your patient. Using a high-speed you certainly would have risked a root fracture due to the vibration. Nice work and thanks for the tip.

    #11920 Reply

    Robert Gregg DDS
    Spectator

    Hi jetsfan,

    What laser and what settings did you use.

    FOr years we have used our pulsed Nd:YAGs to remove the cement selectively and leave the post and surrounding dentin largely uneffected.

    Usually 3.00 Watts, 20 hz, 100 usec. Then we use the Fr Nd:YAG to vaporize the gutta percha. Goes VERY quickly, right Geoff?….oh Geoff…where are you?

    Love to see the pictures.

    Bob

    #11917 Reply

    jetsfan
    Spectator

    I am a waterlase user.
    I used a g6 tip at 2.5W only 17%W as too much water would have made it impossible to see , and 25%A. The cement washed away nicely and as the tip has a diameter greater than the film thickness of the cement I did need to remove a small amount of dentin circumferentially.
    Still working on the pics.

    #11921 Reply

    Swpmn
    Spectator

    Jetsfan:

    Thanks for the tip.

    How far down the root were you able to remove cement or trough around the post using the G6 tip in the Waterlase? Did you happen to hit the gold post with the laser beam and if so did you see any white sparking or flashback?

    Al

    #11918 Reply

    jetsfan
    Spectator

    SWPMN,
    I went about 3-4mm down the root alongside the post.Roughly half way down the lenght of the post. This seemed to give me some “wiggle room” for the post.
    I can’t believe that I didn’t touch the gold post but I did not see any sparking which really surprised me. I didn’t think my hand could be that steady.

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