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Fixed appliances best and cheapest
Date:10/25/2011

Society could save millions of crowns each year if more children were fitted with fixed appliances. This is shown in unique studies performed by Sofia Petrn, a dentist and orthodontic specialist at the Department of Orthodontics at Malm University in Sweden.

Calculations indicate that at least ten percent of all eight- and nine-year-olds in Sweden have so-called crossbite.

This means that the children's upper and lower jaws are different in width and do not line up against each other when they bite their jaws together. If this problem is not corrected, the children can experience pain in the jaw, facial muscles, and jaw joints. Their face can also become asymmetrical.

In randomized studies, Sofia Petrn investigated four methods of treatment: fixed appliance (Quad Helix), removable appliance (expansion plate), composite construction on the molars of the lower jaw, and no action in the hope that the problem will straighten itself out. A total of 70 children were involved in the four groups.

The results show that neither the composite construction nor no action has any effect on crossbite. The other two treatments are effective, both in the short and long term, but the fixed appliance yielded clearly superior results.

"The fixed appliance entail that the children are treated 24 hours a day. The removable plate means that the children need the help of their parents, and it happens that they forget it sometimes, which affects the outcome of treatment," says Sofia Petrn.

There's a big difference in the cost of the various treatment methods, both direct and indirect, according to Sofia Petrn, who arrived at these results in her dissertation Correction of Unilateral Posterior Crossbite in the Mixed Dentition, submitted to the Faculty of Odontology at Malm University.

The fixed appliance is also the cheapest. Sofia Petrn compared the costs, both direct and indirect, and found that society could save SEK 32
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Contact: Magnus Sjholm
magnus.sjoholm@mah.se
46-707-890-714
Swedish Research Council
Source:Eurekalert

Page: 1 2

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