L(+)-lactic acid production in plaque from orthodontic appliances retained with glass ionomer cement.
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.
Hallgren
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A
Department of Orthodontics, Länssjukhuset, Halmstad, Sweden.
Oliveby
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A
Twetman
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S
D000180:Acrylic Resins / Q000737:chemistry; D000293:Adolescent; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003773:Dental Plaque / Q000378:metabolism*; D005260:Female; D005285:Fermentation; D005899:Glass Ionomer Cements / Q000737:chemistry; D005947:Glucose / Q000378:metabolism; D006801:Humans; D007773:Lactates / Q000032:analysis / Q000096:biosynthesis*; D019344:Lactic Acid; D008297:Male; D009967:Orthodontic Appliances; D013997:Time Factors
D000180:Acrylic Resins; D003188:Composite Resins; D005899:Glass Ionomer Cements; D007773:Lactates; C045751:Aqua-cem; D019344:Lactic Acid; D005947:Glucose