Burned on the face during crown procedure?

i was at the dentist getting a crown procecure and after the dentist had drilled the tooth down,


the dental assistant was packing some kind of string in the gums on that tooth and i received a chemical burn on my face near my lips. It is a week later and it looks like it might scar, maybe. I asked the dentist what chemical it was that burned me and she avoided giving my a proper name for the chemical, all she said is that it was a combination of chemicals and something about it being hemostatic. she told me that i had a rare reaction to it but i suspect the chemical was something that shouldn't be on anyones skin. anyone know what burned me?

Burned on the face during crown procedure?
As Dr Sam says above, the usual haemostatic agents are ferric sulfate and aluminium chloride (generic names). Neither of these will burn your skin.


Another very faint possibility is tri-chloracetic acid. This has been used by some people, but it burns skin very easily, and its use is discouraged. Nasty stuff. I can't think why anyone would use it when the other usual agents are effective. It's the only substance that I can think of that would burn.


If you're worried about scarring, then you should persist in finding out the name of the chemical, and seek the opinion of a dermatologist or plastic surgeon.
Reply:no just get mederma scar ointment from the pharmacy
Reply:I think the string has clove oil on it. Clove helps "calm" the tooth. Clove oil is strong and can give a burning feeling. Consult your dentist or doctor.
Reply:There is a special ultraviolet light that is used to cure the bonding agents in the special the moulding paste that they use.. It is a porcaand acrylic combination polymer and a molimer is used. the light is hot. Did you sign a release from damages. Make them treat the injury. I've had this procedure and had a burn in my mouth and the dentist said it was actually the light that bakes it.
Reply:We use astringent agents, like ferric sulfate, aluminum chloride. Some have epinephrine in them. There are many brands out there and I am sure there are different chemicals used, but these are the main ones.
Reply:There is phosphoric acid in some dental products. I think used for etching a tooth before something should stick to it. that is not supposed to touch the tooth. There is also the clove oil as someone previously stated that is used to calm the rooth it is in a cement called ZOE or IRM. You could ask if your dentist used either of those or an etching agent containing Phosphoric acid.
Reply:It sounds like they were using hemodent and retraction cord to stop the bleeding so that they could take the impression for the crown.





Hemodent™ effectively stops minor gingival bleeding. It contains no epinephrine to help avoid cardiac reactions. Hemodent is stable and offers a long shelf life.





Recommended to arrest bleeding during crown preparations, before impression taking, placing fillings, cement bases, or cementing inlays or crowns; also after minor surgery, curettage, gingivectomies, gingivoplastys and deep scaling.





Hemodent Cords are already impregnated with Hemodent Liquid.The cord has a pliable consistency to be easily packed subgingivally without fraying or disintegrating.The braided cord remains placid when placed due to its hollow braiding.





Both cords are dry on placement and are activated by mouth moisture. They are easily placed to shrink away interfering gingiva before making gingival impressions and are easily removed. Packaged in 7-ft. lengths in self-cutting dispensing containers.
Reply:This gel is used with a cord pushed into the gum tissue to retract your gums before the final impression is taken so that when your crown is made it is placed under the gum line just enough so food will not get caught under the crown and cause decay. We use "tissue goo" a 25% aluminum sulfate hemostatic gel. The hemostatic properties keep the tissue from bleeding because the area needs to stay dry for the final impression. It sounds like this is what they were using. I've never heard of it causing burns, but I've never dropped it on a patients face either.