Before you run to the cupboard, you should know that the variety of honeys are widely varied in their effectiveness, so not all types are the same.
Some honeys may not be any better for your teeth than refined sugar, but at the other end of the spectrum, there are honeys which are outstanding for their antimicrobial properties. It appears that the majority of research on honey's antimicrobial properties and effectiveness in treating gum disease come out of New Zealand in the past half-dozen years. Most of this may be attributable to Dr. Peter C. Molan, Associate Professor of Biochemistry at the University of Waikato, New Zealand:
"Honey contains an enzyme that produces hydrogen peroxide which is believed to be the main reason for the antimicrobial activity of honey. Types of honey differ greatly in their antimicrobial potency, varying as much as a hundred fold. The research has shown that honey not only stops the growth of the dental plaque bacteria, it reduces the amount of acid produced, which stops the bacteria from producing dextran. Dextran, a component of dental plaque, is the gummy polysaccharide that the bacteria produce in order to adhere to the surface of the teeth."
Honey derived from the Manuka (Leptospermum scoparium) bush, found in abundance in New Zealand, claims the highest potency of antimicrobial properties. In fact, Maruka honey's antibacterial factor is unaffected by enzymes in the body that destroy hydrogen peroxide components. (Normally, peroxide isn't considered a good antimicrobial because the body too quickly dilutes it.) It also has an exceptionally high level of plant-derived antimicrobial activity. Antioxidants in honey prevent the formation of free radicals and the nutrient supply of honey is an important factor in new tissue growth, damaged by infection, as well.
In addition, a 'medicinal' honey has been developed in New Zealand and Queensland, Australia to fight against 'superbugs,' such as multiple-resistant staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE), attributable to a reported 100 deaths a week in the UK, according to one report.
FYI