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Structural and chemical enamel characteristics of hypomineralised second primary molars.
Eur Arch Paediatr Dent. 2021 Jun; 22(3):361-366.EA

Abstract

PURPOSE

Although hypomineralised second primary molars (HSPM) are considered belonging in the same entity as molar incisor hypomineralisation (MIH), the structure and chemistry of their defected enamel have not been described. We aimed to study these in justifying any similarities with MIH.

METHODS

Nine HSPM and five first permanent molars with MIH were either fractured or sectioned longitudinally through their defective enamel and examined by scanning electron microscopy. Relative amounts of calcium (Ca), phosphorus (P), oxygen (O), carbon (C) and the Ca:P ratio were calculated in the primary molar samples by energy -dispersive spectrometry.

RESULTS

Rod width was deficient in the defected enamel of HSPM resulting in wide interrod spaces and suggesting similarities to permanent enamel structure in MIH. In areas with breakdown, cracks and disrupted coherence between enamel rods were more marked. Differences in Ca, P, O, C and Ca:P ratio between hypomineralised and sound enamel in HSPM followed the same trend as in MIH without reaching statistical significance.

CONCLUSION

Marked structural differences between sound and hypomineralised enamel of HSPM and similarity to MIH enamel were verified.

Authors+Show Affiliations

Department of Paediatric Dentistry, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece. alifakioti.evgenia@gmail.com.Department of Paediatric Dentistry, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.Department of Mineralogy, School of Geology, Aristotle University of Thessaloniki, Thessaloniki, Greece.Department of Paediatric Dentistry, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32865711

Citation

Alifakioti, E, et al. "Structural and Chemical Enamel Characteristics of Hypomineralised Second Primary Molars." European Archives of Paediatric Dentistry : Official Journal of the European Academy of Paediatric Dentistry, vol. 22, no. 3, 2021, pp. 361-366.
Alifakioti E, Arhakis A, Oikonomidis S, et al. Structural and chemical enamel characteristics of hypomineralised second primary molars. Eur Arch Paediatr Dent. 2021;22(3):361-366.
Alifakioti, E., Arhakis, A., Oikonomidis, S., & Kotsanos, N. (2021). Structural and chemical enamel characteristics of hypomineralised second primary molars. European Archives of Paediatric Dentistry : Official Journal of the European Academy of Paediatric Dentistry, 22(3), 361-366. https://doi.org/10.1007/s40368-020-00557-3
Alifakioti E, et al. Structural and Chemical Enamel Characteristics of Hypomineralised Second Primary Molars. Eur Arch Paediatr Dent. 2021;22(3):361-366. PubMed PMID: 32865711.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Structural and chemical enamel characteristics of hypomineralised second primary molars. AU - Alifakioti,E, AU - Arhakis,A, AU - Oikonomidis,S, AU - Kotsanos,N, Y1 - 2020/08/31/ PY - 2020/02/24/received PY - 2020/08/19/accepted PY - 2020/9/1/pubmed PY - 2021/6/23/medline PY - 2020/9/1/entrez KW - Chemical composition KW - Deciduous molar hypomineralisation KW - Enamel hypomineralisation KW - Enamel microstructure KW - Hypomineralised second primary molars KW - Molar incisor hypomineralisation SP - 361 EP - 366 JF - European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry JO - Eur Arch Paediatr Dent VL - 22 IS - 3 N2 - PURPOSE: Although hypomineralised second primary molars (HSPM) are considered belonging in the same entity as molar incisor hypomineralisation (MIH), the structure and chemistry of their defected enamel have not been described. We aimed to study these in justifying any similarities with MIH. METHODS: Nine HSPM and five first permanent molars with MIH were either fractured or sectioned longitudinally through their defective enamel and examined by scanning electron microscopy. Relative amounts of calcium (Ca), phosphorus (P), oxygen (O), carbon (C) and the Ca:P ratio were calculated in the primary molar samples by energy -dispersive spectrometry. RESULTS: Rod width was deficient in the defected enamel of HSPM resulting in wide interrod spaces and suggesting similarities to permanent enamel structure in MIH. In areas with breakdown, cracks and disrupted coherence between enamel rods were more marked. Differences in Ca, P, O, C and Ca:P ratio between hypomineralised and sound enamel in HSPM followed the same trend as in MIH without reaching statistical significance. CONCLUSION: Marked structural differences between sound and hypomineralised enamel of HSPM and similarity to MIH enamel were verified. SN - 1996-9805 UR - https://www.unboundmedicine.com/medline/citation/32865711/Structural_and_chemical_enamel_characteristics_of_hypomineralised_second_primary_molars_ L2 - https://dx.doi.org/10.1007/s40368-020-00557-3 DB - PRIME DP - Unbound Medicine ER -