J. Orthod.
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British Journal of Orthodontics, Vol 21, 23-26, Copyright © 1994 by British Orthodontic Society

ARTICLES

L(+)-lactic acid production in plaque from orthodontic appliances retained with glass ionomer cement

A Hallgren, A Oliveby and S Twetman
Department of Orthodontics, Lanssjukhuset, Halmstad, Sweden.

The lactic acid production in suspensions of plaque collected adjacent to orthodontic brackets retained with a glass ionomer cement (GIC), or a resin-based composite was investigated using a split-mouth technique. Forty-eight-hour-old plaque was collected at 3, 8, and 28 days, and 3 months after the onset of orthodontic treatment. Acid fermentation was induced by glucose and the L(+)-lactic acid concentrations were determined enzymatically after a 30-minute incubation period. Significantly (P < 0.05) lower levels of lactic acid were found in plaque from GIC-retained brackets compared with the composite controls at the 28 days and 3 months sampling occasions, respectively. The results suggest that the use of GIC as a bonding agent in orthodontics can be beneficial for patients assessed at risk of caries development.


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T. J. Algera, C. J. Kleverlaan, A. J. de Gee, B. Prahl-Andersen, and A. J. Feilzer
The influence of accelerating the setting rate by ultrasound or heat on the bond strength of glass ionomers used as orthodontic bracket cements
Eur J Orthod, October 1, 2005; 27(5): 472 - 476.
[Abstract] [Full Text] [PDF]


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Copyright © 1994 British Orthodontic Society.