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Dr. Rick
Dr. Rick, Board Certified MD
Category: Eye
Satisfied Customers: 11407
Experience:  Ophthalmology since 1994 with Retina sub-specialty interest
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I would like to use an ultrasonic toothbrush for 20 minutes,

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I would like to use an ultrasonic toothbrush for 20 minutes, twice a day, to restore lost jawbone and even possibly regenerate lost teeth, since I have lost most of my upper teeth. This type of device generates 1.5 MHz ultrasonic waves at around 0.3 mW, and some of the devices are pulsed. They are said to have a maximum transmission into the bone of around 12 mm. I would be using the device in this way on a daily basis for several years.
Since I am also myopic and have had retinal detachment surgery repaired by cryopexy about 10 years ago, I am concerned that daily application of ultrasound might destabilize or tear the retina, or detach the scar that holds (or held) the retina of the right eye to the choroid, triggering another retinal issue.
I have a different question regarding enzymes, specifically, serrapeptase and papain. Due to other health issues, like membranous nephropathy, I have contemplated taking serrapeptase to digest autoimmune complexes in the kidney basement membrane. Serrapeptase digests `dead` scar tissue, therefore would it compromise my retinal repair which was done by cryopexy? Similarly, if I took papain for the same purpose, i.e., to digest autoimmune complexes, would that be a concern for my retinas? - since papain even digests living retinal tissue in the lab.
Hi. I'm online and happy to answer your question today.
I am a retina surgeon.
I can assure you that the cryo scar that has repaired your retina will not be damaged in any way by the ultrasound. Also, surrounding your eye is a large amount of fat and tissue that,I would think, should further protect your retina from the energy transmitted through bone.
Also, I do not think the ultrasound, from what you have posted, will place you at any increased risk for another retinal detachment.
As far as the enzymes, once again, you have asked a very good question. The cryo scar is avascular and, as such, the enzymes will not get to it. Furthermore the inside of the eye is protected by a blood/retina barrier and, once again, the enzymes should not get though. If they were to get access to the cryo scar, say by injection into the eye, what would happen? To tell the truth, I don't know....
Thank you for the very stimulating questions :)
Is there anything else you would like to discuss at this point or have all your questions been answered to your satisfaction?
I hope this information was helpful for you. But I do work for tips so I want to make sure you are happy with me before rating me. If you have another question on this or a related issue feel free to fire away. You may also receive an email survey after our chat, if you don’t feel that I have earned a “10” rating in all areas, please let me know what I can do to meet your expectations.
Thanks in advance,
Dr. Rick MD FACS
Customer: replied 4 years ago.

Dr. Rick

Thankyou very much for this information from somebody like yourself who knows the risks. I am happy that I can go ahead to gently stimulate the jawbone to restore lost bone mass without compromising the eye.

We always wondered whether vibration of any sort, even low frequency from an electric shaver, would not be good for the eye.

Thankyou for reassurance on this point.

Incidentally, after 10 years, would the scar tissue have been replaced by normal tissue however, rendering it vascular, like the rest of the retina? If it has been replaced, would the enzymes then pose a problem?

Thankyou so much for your kind answers, and of course I will give a you a rating of "10" for helping me solve these riddles.

No. I've looked at cryo scars I've placed 20 years blood vessels.
I do not believe you have to worry that these enzymes would be able to penetrate the blood/retinal barrier or pose any significant risk to the old scar or the retina.
Glad to hear that you have had some success already.
Does this make sense to you?
It's safe for you to press the positive feedback button now if you so desire. And, never fear, even after you press that button I don't go up in a puff of smoke -- I'll still be right here to continue helping you, but, as I do work for tips, I want to make sure you are happy before rating me.
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