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Titolo:
Fluoride release from new light-cured orthodontic bonding agents
Autore:
McNeill, CJ; Wiltshire, WA; Dawes, C; Lavelle, LB;
Indirizzi:
Univ Manitoba, Fac Dent, Sect Orthdont, Winnipeg, MB R3E 0W2, Canada Univ Manitoba Winnipeg MB Canada R3E 0W2 nt, Winnipeg, MB R3E 0W2, Canada Univ Manitoba, Fac Dent, Dept Oral Biol, Winnipeg, MB R3E 0W2, Canada UnivManitoba Winnipeg MB Canada R3E 0W2 ol, Winnipeg, MB R3E 0W2, Canada
Titolo Testata:
AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS
fascicolo: 4, volume: 120, anno: 2001,
pagine: 392 - 397
SICI:
0889-5406(200110)120:4<392:FRFNLO>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELASTOMERIC LIGATURE TIES; GLASS-IONOMER CEMENTS; IN-VITRO; WHOLE SALIVA; FLOW-RATE; RESIN; DEMINERALIZATION; APPLIANCES; ADHESIVE; INVITRO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Wiltshire, WA Univ Manitoba, Fac Dent, Sect Orthdont, 780 Bannatyne Ave, Winnipeg, MB R3E 0W2, Canada Univ Manitoba 780 Bannatyne Ave Winnipeg MB Canada R3E 0W2 a
Citazione:
C.J. McNeill et al., "Fluoride release from new light-cured orthodontic bonding agents", AM J ORTHOD, 120(4), 2001, pp. 392-397

Abstract

The purpose of this study was to compare the rates of fluoride release with time from 1 nonfluoridated and 3 fluoride-containing orthodontic bonding materials in distilled water and artificial saliva. Materials tested were Assure (Reliance Orthodontic Products, Itasca, III), Fuji Ortho LC (GC, Tokyo, Japan), Python (TP Orthodontics, LaPorte, Ind), and Transbond XT (3M Dental Products, Monrovia, Calif). Ten specimens of each material type were stored in distilled water, and 10 of each type were stored in artificial saliva at 37 degreesC. Fluoride release was measured with an ion-specific electrode. Readings were taken periodically for a total time period of 6 months. At day 1, Assure released the most fluoride into distilled water (66.2 mug/cm(2)) and into artificial saliva (65.8 mug/cm(2)), followed by Fuji OrthoLC (25.9 mug/cm(2); 18.8 mug/cm(2)), Python (6.3 mug/cm(2); 4.2 mug/cm(2)), and Transbond (0.1 mug/cm(2); 0.1 mug/cm(2)). The fluoride release rates were highest during the first days of testing, declining to lower but more stable levels. At the end of 6 months, Fuji Ortho LC released the most fluoride (3.8 mug/cm(2); 3.5 mug/cm(2)) followed by Assure (3.1 mug/cm(2); 2.8 mug/cm(2)), Python (2.6 mug/cm(2); 1.7 mug/cm(2)), and Transbond (0.1 mug/cm(2); 0.1 mug/cm(2)). The type of storage medium did not dramatically affect fluoride release. The second part of the study, undertaken after a year of sample storage, tested the 20 samples of Assure for a further 2-week period, after exposure to running and still distilled water. Although fluoride release rates declined with time, they were still higher than the 1.5 mug/cm(2) level that is referenced as inhibiting decalcification of enamel in a clinical environment. Release rates were similar in running and still waterat all time points. Throughout the 6-month period, all 3 fluoride-containing materials had rates of fluoride release that could theoretically inhibitdecalcification of enamel.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 11:32:01