Children who develop tooth decay before they start school are more likely than their peers to suffer tooth decay and its consequences in later life. Picture: Pixabay
Children who develop tooth decay before they start school are more likely than their peers to suffer tooth decay and its consequences in later life. Picture: Pixabay

Tooth decay in children - is it time to put the needle and drill away?

By Nicola Innes and Mark Robertson Time of article published Jan 21, 2020

Share this article:

Research shows that having dental treatment as a child is a common reason for this fear in adulthood. 

This is not surprising given that most children’s experience of the dentist involves injections followed by drilling. And who can forget the sound of a dentist’s drill?

By taking advantage of recent advances in our understanding of tooth decay, we have investigated and developed new treatments that don’t need injections or drilling. One of these is called the Hall technique. It involves placing a small stainless steel crown over affected baby teeth to seal in the decay.

Doing so seals in the bacteria that are causing the tooth to decay and stops them getting oxygen and sugar – which these bacteria need to survive. Once the crown is in place, the bacteria can no longer make acid – which dissolves tooth enamel and causes cavities – so the disease stops.

Our trials comparing sealing decay under these small metal caps with traditional tooth fillings show that the Hall technique has higher success rates, with 93% to 98% of children avoiding toothache or infection for two to five years. And children either prefer it or find it as easy to cope with as traditional drilling and filling, regardless of whether the treatment was provided in a dental clinic or a classroom, and regardless of whether the procedure was performed by a specialist dentist, general dentists or dental student.

But what happens over time?

It’s all very well treating a single tooth, but we wanted to know what happens when you treat a child’s teeth over a long period. To do so, we compared three ways of managing decay in baby teeth in 1058 children, aged three to seven, who already had tooth decay, and followed them up for three years.

The first way was the traditional approach: numbing the tooth with injections, removing dental decay with drills and putting a filling in the cavity. This was accompanied with preventative treatment, the dentist or dental therapist delivering tooth brushing and diet advice as well as applying high-fluoride varnish. The second way was using the Hall technique or placing a filling over decay without injections. This, too, was accompanied by preventative treatments. The third way was preventative treatment alone.

After three years, there was no evidence of a difference between the groups for pain, infection, quality of life or dental anxiety. All methods were acceptable to children, parents and dental professionals. However, when considering the slightly higher number of episodes of dental pain and infection in the prevention-alone group, and the overall cost of subsequent treatment, the sealing in with prevention strategy was the most cost-effective treatment.

A highly significant factor in the acceptability of all three types of treatments was the trust that children and parents had in their dentist. Having the same dentist throughout was also important.

Children and parents had positive experiences and reduced dental anxiety when their dentist listened, explained procedures and was gentle, caring and patient.

Highly prevalent disease

Preventing tooth decay in children and its consequences (toothache and abscesses) will reduce it having a negative effect on children’s health, well being and attainment. So it’s crucial that the moment a child’s first baby tooth appears, they are taken to see their dentist regularly and that good tooth brushing habits and healthy diets are adopted and encouraged at home.

The Conversation 

The Conversation

Share this article:

Related Articles