Die Karies ist in den letzten Jahrzehnten durch verbesserte Hygienemaßnahmen, fluoridhaltige
Zahncremes und eine umfassende zahnärztliche Versorgung in den Industrienationen deutlich
zurückgegangen. Allerdings entwickelt sich die Erosion der Zahnhartgewebe zunehmend
zu einem Problem. Speziell säurehaltige Getränke wurden in jüngster Zeit als ein entscheidender
ätiologischer Faktor erkannt. Zur Diagnostik des erodierten Schmelzes werden neben
klassischen Methoden der Mikrohärtemessverfahren inzwischen auch die atomare Kraft-Mikroskopie
(Atomic Force Microscopy, AFM) und die AFM-Nanoindentation eingesetzt. Die zuletzt
genannten Verfahren gelten weltweit als die empfindlichsten Methoden, um früheste
Stadien der Schmelzerosion messbar zu machen.
Among industrial nations, caries has noticeably diminished during recent decades,
thanks to improved hygiene, fluoridized toothpastes and comprehensive dental care.
On the other hand, erosion of the hard dental substances increasingly becomes a problem.
Acid-containing drinks, in particular, have been recently identified as a decisive
etiological factor. For diagnosing the eroded enamel, classical methods of microhardness
testing are meanwhile supplemented by atomic force microscopy (AFM) and AFM nanoindentation.
AFM techniques are regarded worldwide as the most sensitive methods to make earliest
stages of enamel erosion measurable.
Schlüsselwörter
Erosion - frühe Diagnostik - Atom-Kraft-Mikroskopie - AFM-Nanoindentation
Key Words
Erosion - Early Diagnosis - Atomic Force Microscopy - AFM Nanoindentation
Literatur
- 1
Callister WD..
Fundamental of Materials Science and Engineering.
New York: John Wiley & Sons.
2005;
3
- 2 Callister WD.. Fundamental of Materials Science and Engineering. New York: John
Wiley & Sons 2005
- 3
ten Gate JM, Imfeld T..
Dental erosion, summary.
Eur J Oral Sci.
1996;
104
241-246
- 4 Arends J, Jongebloed WL, Schuthof J.. In: Leach SA, Edgar WM (Hrgs.). Demineralisation
and Remineralisation of Teeth. Oxford, Washington: IRL Press 1983: 155
- 5 Zur Erklärung der Größenskalen: 1( = ein milliontel Meter; Durchmesser eines Haares
ca. 30-50 (mnm = einmilliardstel Meter, Atomdurchmesser ca. 0,1 nm).
- 6 Berkovitz BKB, Holland GR, Moxham BJ.. A color atlas and text of oral anatomy, histology
and embryology. Wolfe: London 1992
- 7
Selvig KA, Halse A..
Crystal growth in rat incisor enamel.
Anat Rec.
1972;
173
453-468
- 8
Kerebel B, Daculsi G, Kerebel LM..
Ultrastructural studies of enamel crystallites.
J Dent Res.
1979;
58
844-851
- 9 Robinson C, Kirkham J, Shore R.. Dental enamel formation to destruction. CRC Press:
Boca Ratou 1995
- 10 Dieser Absatz wurde beigetragen von Priv.-Doz. Dr. med. habil. Bernd W. Sigusch,
Poliklinik für Konservierende Zahnheilkunde, Friedrich-Schiller-Universität Jena,
An der alten Post 04, 07740 Jena.
- 11
Krikham J, Robinson C, Strong M, Shore RC..
Effects of frequency and duration of acid exposure on demineralization/remineralization
behaviour of human enamel in vitro.
Caries Res.
1994;
28
9-13
- 12
Shellis RP..
A scanning electron-microscopic study of solubility variations in human enamel and
dentine.
Arch. Oral Biol.
1996;
41
473
- 13
Binnig G, Quate CF, Gerber C..
Atomic force microscope.
Phys Rev Lett.
1986;
56
930-933
- 14
Jandt KD..
Developments and perspectives of scanning probe microscopy (SPM) on organic materials
systems.
Mat Sci Eng.
1998;
21
221-295
- 15
Collys K, Slop D, Cleymaet R. et al. .
Load dependency and reliability of microhardness measurements on acid-etched enamel
surfaces.
Dent Mater.
1992;
8
332-335
- 16
Finke M, Hughes JA, Parker DM, Jandt KD..
Mechanical properties of in situ demineralised human enamel measured by AFM nanoindentation.
Surf Sci.
2001;
491
456-467
- 17
Finke M, Jandt KD, Parker DM..
The Early Stages of Native Enamel Dissolution Studied with Atomic Force Microscopy.
J Colloid Interface Sci.
2000;
232
156-164
- 18
Finke M, Parker DM, Jandt KD..
Influence of soft drinks on the thickness and morphology of in situ acquired pellicle
layer on enamel.
J Colloid Interface Sci.
2002;
251
263-270
- 19
Barbour ME, Parker DM, Allen GC, Jandt KD..
Human enamel dissolution in citric acid as a function of pH in the range 2.30▭pH▭6.30
- a nanoindentation study.
Eur J Oral Sci.
2003;
111
258-262
- 20
Barbour ME, Parker DM, Allen GC, Jandt KD..
Enamel dissolution in citric acid as a function of calcium and phosphate concentrations
and degree of saturation with respect to hydroxyapatite.
Eur J Oral Sci.
2003;
111
428-433
- 21
Barbour ME, Parker DM, Jandt KD..
Enamel dissolution as a function of solution degree of saturation with respect to
hydroxyapatite: a nanoindentation study.
J Colloid Interf Sci.
2003;
265
9-14
- 22
Lippert F, Parker DM, Jandt KD..
In vitro demineralization/remineralization cycles at human tooth enamel surfaces investigated
by AFM and nanoindentation.
J Colloid Interface Sci.
2004;
280
- 23
Lippert F, Parker DM, Jandt KD..
In situ remineralisation of surface softened human enamel studied with AFM nanoindentation.
Surf Sci.
2004;
553
105-114
Korrespondenzadresse
PD Dr. Dr. B. W. Sigusch
Poliklinik für Konservierende ZHK
An der alten Post 4
07740 Jena
Email: bernd.w.sigusch@med.uni-jena.de