Influence of repeated APF applications on long-term remineralization of initial lesions in bovine enamel

Journal Article · Tue Jan 01 00:00:00 EST 1985 · J. Dent. Res.; (United States)

DOI:https://doi.org/10.1177/00220345850640010101· OSTI ID:5824783

Bodde, H E; Nelson, D G; Koops, P G; Arends, J

Initial lesions in bovine enamel were remineralized in vitro for periods lasting from one hour to two weeks; in some cases, remineralization was interrupted daily for a ten-minute APF application. After two weeks, surface coatings appeared on APF-treated specimens; SEM and TEM observations, including selected area and micro-electron diffraction, indicated both a layered structure within these coatings, and the predominance of calcium fluoride single crystals, ranging from 0.1 to 1.0 micrometer in size. Using double (/sup 45/Ca and /sup 32/P) labeled remineralizing solutions, the authors obtained depth profiles of deposited labeled calcium and phosphate; these indicated that repeated APF applications prevented inward penetration of calcium and phosphate and limited the deposition of these ions to an outer surface region corresponding to the surface coating. These phenomena are explained in terms of the composition and apparent reactivity of the coating.

• Research Organization: Univ. of Groningen, The Netherlands
• OSTI ID: 5824783
• Journal Information: J. Dent. Res.; (United States), Vol. 64:1
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
62 RADIOLOGY AND NUCLEAR MEDICINE
ENAMELS
CHEMICAL COMPOSITION
FLUORIDES
BIOLOGICAL EFFECTS
TEETH
INJURIES
CALCIUM
CALCIUM 45
CATTLE
CRYSTALS
LABELLED COMPOUNDS
PARTICLE SIZE
PHOSPHATES
PHOSPHORUS 32
SCANNING ELECTRON MICROSCOPY
TIME DEPENDENCE
TRACER TECHNIQUES
TRANSMISSION ELECTRON MICROSCOPY
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METALS
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM ISOTOPES
COATINGS
DAYS LIVING RADIOISOTOPES
DIGESTIVE SYSTEM
DOMESTIC ANIMALS
ELECTRON MICROSCOPY
ELEMENTS
EVEN-ODD NUCLEI
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
MAMMALS
METALS
MICROSCOPY
NUCLEI
ODD-ODD NUCLEI
ORAL CAVITY
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOSPHORUS ISOTOPES
RADIOISOTOPES
RUMINANTS
SIZE
VERTEBRATES
560305* - Chemicals Metabolism & Toxicology- Vertebrates- (-1987)
550600 - Medicine