Chlorhexidine (aka chlorhexidine gluconate) is antiseptic. It’s used at St. Lawrence Dentistry and as a take-home rinse by many of our valued patients.
It can also treat yeast contaminations of the mouth and is helpful against a range of microbes. It came into clinical use in the 1950s and is obtainable by prescription in Canada. It is on the WHO’S Catalog of Essential Medicines. Recently it was ranked the 286th most regularly prescribed medical formulation in the United States.
Dr. Hawryluk feels that using a Chlorhexidine-based mouthwash blended with regular tooth care can reduce plaque buildup and combat mild gum inflammation. In root canal treatment acts as a “canal irrigating solution” and “intracanal dressing”. However, sodium hypochlorite is presently the canal irrigant of choice at St. Lawrence Dentistry. Dr. Hawryluk sometimes prescribes about 20 mL twice a day (concentrations of 0.1% to 0.2% ) with a span of at least half a minute. Research suggests using Chlorhexidine for 4 to 6 weeks leads to a moderate reduction in gingivitis. Other non-dental uses include skin disinfection before surgical procedures and instrument disinfection. It is additionally applied for cleansing cuts and to prevent urinary catheters from obstructing.
Chlorhexidine is effective on a range of bacteria and fungi. However, it is ineffective on polioviruses and adenoviruses. An investigation is ongoing concerning its effectiveness upon herpes simplex.
Chlorhexidine releases positively charged cations, which bind to negatively charged bacterial cell walls. Chlorhexidine “cation” can associate with anionic parts of toothpaste, such as sodium lauryl sulfate and sodium mono-fluorophosphate, and makes salts of low solubility and reduced antimicrobial action. In other words, surfactants commonly used as detergents in toothpaste and mouthwashes can deactivate Chlorhexidine. Therefore Dr. Hawryluk suggests his Mississauga patients wait 30 minutes after brushing before using Chlorhexidine.
There are some unfavorable outcomes of prolonged Chlorhexidine use which our Mississauga dental office always keeps in mind. These include sensitivity to the mouth lining, tooth discolorations, tartar accumulation, and impaired taste. In addition, external tooth staining happens after using chlorhexidine rinse for one month or longer. Use in pregnancy is deemed safe. There are now prescriptions of Chlorhexidine that stain teeth less compared to the traditional solution, several of which include chelated zinc.
Chlorhexidine is ototoxic. If placed into an ear canal with a ruptured eardrum, it can cause hearing loss. Whether continued use over several years may increase the chance of causing cancer is still unclear. The FDA advises restricting the use of a chlorhexidine mouth rinse to a maximum of half a year. When ingested, Chlorhexidine its absorption is limited and can precipitate gastrointestinal upset or nausea. If aspirated (into the lungs), it can cause acute respiratory distress syndrome. Our Mississauga dental patients are encouraged to talk to Dr. Hawryluk they have questions about these side effects.
We hope you have enjoyed this article. Thank you for reading!
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Lai, P; Coulson, C; Pothier, D. D; Rutka, J (2011). “Chlorhexidine ototoxicity in ear surgery, part 1: Review of the literature”. Journal of Otolaryngology-Head & Neck Surgery. 40 (6): 437–40.
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