Toothbrushing gets all the attention. It's the first thing
patients are taught when visiting the dentist or hygienist. People
all have toothbrushes and know they should brush their teeth
every day. But what about between the teeth?
Bacterial biofilm accumulates in areas that are well protected
and out of reach by the toothbrush. According to Dr. Per
Axelsson (2000), both caries and periodontal disease are
more prevalent between the teeth
than on facial or lingual surfaces.
You might think occlusal surfaces
are the prime target for caries, but
there are only 20 occlusal surfaces
in the permanent dentition, compared
to 64 proximal surfaces. In
the deciduous dentition there are
only eight occlusal surfaces compared
to 40 proximal surfaces.
Proximal surfaces are not reached
with a toothbrush. The proximal
tooth surfaces, just below the contact
point, are where carious lesions
begin. Periodontal tissue under the
contact, called the col area, is less
keratinized than facial and lingual
tissue and thus more susceptible to the toxic waste products
released by the bacterial biofilm. Proximal surfaces are more
susceptible to disease than facial and lingual surfaces. Despite
being the biggest target for caries and periodontal disease, oral
hygiene instructions still emphasise toothbrushing first, rather
than cleaning between the teeth.

To accurately target where disease starts, the oral hygiene
message should be to skip brushing and start cleaning in
between. Tell a patient to skip brushing and they will definitely
listen to the next thing you say! Skipping toothbrushing is not a
message patients expect to hear from their dental professional.
How successful is the current brushing and flossing message?
According to the Proceedings of the European Workshop on
Mechanical Plaque Control in 1998, people only reduce their
plaque scores by an average of 50 percent with toothbrushing.
Despite feeling clean from the toothpaste, toothbrushing with
toothpaste is not removing the bacterial plaque biofilm. The
concept of flossing is good, but compliance is very poor. In the
United States, only 13 percent of adults and six percent of children
reported daily flossing, this according to research published
in the Journal of Periodontology by Carter-Hanson, in 1996. If
patients do floss, their technique is so poor, they can actually
floss between the teeth without removing any plaque biofilm!
Many alternatives to dental floss
are available in the form of triangular
wooden sticks, soft plastic picks
and oral irrigation. Without scientific
merit, dental floss still holds
the top spot for interdental cleaners.
We know that people don't floss and
if they do, they aren't very effective
at it, so it's time for alternatives.
Cleaning between the teeth on a
daily basis is more important
than toothbrushing. Don't look for
research that actually tells subjects
to skip brushing and clean between
their teeth. We are so emotionally
tied to toothbrushing, just the idea
of shifting the emphasis to interproximal
surfaces rather than brushing surfaces makes many in
the profession uncomfortable.
If disease prevention is the goal, it should start between the
teeth, not with toothbrushing. Don't worry, people will still
brush their teeth, but they will start with the surfaces at greatest
risk of disease, the interproximal surfaces.
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