Analysis of the mineral composition of permanent teeth in dentinogenesis imperfecta type II.
Journal Title: Journal of Stomatology (Czasopismo Stomatologiczne) - Year 2012, Vol 65, Issue 3
Abstract
The main constituent of mature enamel is hydroxyapatite. Approximately 96-98% of tooth enamel is composed of inorganic material, i.e. hydroxyapatite crystals (90%) and inorganic amorphous substance (almost 10%) – Ca, Mg, F. Dentinogenesis imperfecta type II (DI – II) is an autosomal, dominant disorder of dentin formation. Its main clinical symptom is opalescent, yellow-brown discoloration of the dentin. The objective of this study was to evaluate the mineral composition of the hard tissue of permanent teeth with symptoms of DI which had been extracted due to periapical lesions and which should serve as an index of their mineralisation, and to compare it with the standard values of healthy teeth. Material and methods. We took four lower molar teeth with dentinogenesis imperfecta type II that had been extracted due to periapical lesions and prepared them and analysed their elemental composition on buccal surface and cross-section under an X-ray microanalysis. Results. The results of basic tests performed on dental mineral elements show many irregularities, both on the surface of the teeth, as well as in their sagittal cross-sections. The basic elemental composition values of the tested teeth indicate distorted mineralisation during the developmental phase.
Authors and Affiliations
Aneta Wieczorek, Jolanta Loster
Keywords
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