Analysis of the mineral composition of hypomineralized first permanent molars
Background/Aim. Hypomineralization of molars and incisors (molar-incisor hypomineralization - MIH) is defined as enamel hypomineralization of systemic origin of one or more of the four first permanent molars, which may be associated with changes in the maxillary, and less frequently in the...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Military Health Department, Ministry of Defance, Serbia
2015-01-01
|
| Series: | Vojnosanitetski Pregled |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0042-8450/2015/0042-84501500071M.pdf |
| Summary: | Background/Aim. Hypomineralization of molars and incisors (molar-incisor
hypomineralization - MIH) is defined as enamel hypomineralization of
systemic origin of one or more of the four first permanent molars, which may
be associated with changes in the maxillary, and less frequently in the
permanent mandibular incisors. The aim of this study was to investigate the
mineral content in hypomineralized teeth as a contribution to under-standing
the origin of these changes, which will be important for effective
restorative approach. Methods. A total of 10 extracted first permanent
molars diagnosed with MIH were used in the study as the experimental group,
and intact first premolars extracted for orthodontic reasons were used as
the control group. A certain surface of hypomineralized аnd healthy enamel
and dentin was analyzed using a scanning electron microscope equipped with
an energydispersive spectrometer (SEM/EDS). Results. By conducting
quantitative chemical analysis of the distribution of the basic chemical
elements, it was found that the concentration of calcium (Ca) and phosphorus
(P) was significantly higher in healthy enamel (Ca = 28.80 wt%, and P =
15.05 wt%) compared to hypomineralized enamel (Ca = 27.60 wt% and P = 14.32
wt%). Carbon (C) concentration was statistically significantly higher in
hypomineralized enamel (C = 11.70 wt%) compared to healthy enamel (C = 10.94
wt%). Hypomineralized and healthy enamel did not differ significantly
regarding the ratio of calcium and phosphorus concentrations whereas the
ratio of calcium and carbon concentrations was statistically significantly
higher in healthy enamel compared to hypomineralized enamel. Conclusion.
Concentration of the main chemical elements, primarily calcium and
phosphorus, is significantly reduced in hypomineralized enamel whereas
carbon concentration is increased compared to healthy enamel. |
|---|---|
| ISSN: | 0042-8450 2406-0720 |