TY - JOUR
T1 - Morphologic, Structural, and Chemical Properties of Pulp Stones in Extracted Human Teeth
AU - Milcent, Camila Peixoto Fabri
AU - da Silva, Thiago Gomes
AU - Baika, Loana Mara
AU - Grassi, Marco Tadeu
AU - Carneiro, Everdan
AU - Franco, Ademir
AU - De Lima, Antônio Adílson Soares
N1 - Funding Information:
The authors would like to express their gratitude to the staff of the Centro de Microscopia Eletr?nica of the Universidade Federal do Paran? (UFPR), Laborat?rio de F?sica de Difratometria e Espelhamento de Raios-X (UFPR), Departamento de Qu?mica (UFPR), and Pontif?cia Universidade Cat?lica do Paran? ? all institutions are represented by Mr Deonir Agustini, Mr Daniel da Silva Costa, Dr Marco Tadeu Grassi, and Dr S?rgio Aparecido Ign?cio, respectively.
Publisher Copyright:
© 2019 American Association of Endodontists
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/12
Y1 - 2019/12
N2 - Introduction: Pulp stones are mineral structures that develop in the pulp tissue triggered by several clinical conditions. The exact biochemical process behind the occurrence of pulp stones is uncertain. This study aimed to perform a structural and crystallographic characterization of pulp stones and dentin from extracted human teeth. Methods: The sample consisted of 13 erupted and unerupted permanent human teeth diagnosed with pulp stones. The teeth were analyzed with scanning electron microscopy with secondary and backscattered electrons, energy-dispersive spectroscopy, micro-Raman spectroscopy, micro–X-ray diffraction, and inductively coupled plasma atomic emission spectroscopy. Results: The pulp stones revealed a heterogeneous morphology and structure compared with each other. Compared with the adjacent dentin, the pulp stones had a similar structure. From a chemical point of view, oxygen, calcium, carbon, and phosphorus were the most prevalent chemical elements in the inner part of the stones, whereas on the surface carbon, nitrogen, sulfur, chlorine, aluminum, potassium, zinc, copper, and lead were the most prevalent. Copper, iron, and zinc were higher in the stones than the dentin (P < .05). Statistically significant differences between the chemical structure of stones from erupted and unerupted teeth were not detected (P > .05). Conclusions: Pulp stones have structural and chemical properties that are similar to dentin. Variations in morphology are common.
AB - Introduction: Pulp stones are mineral structures that develop in the pulp tissue triggered by several clinical conditions. The exact biochemical process behind the occurrence of pulp stones is uncertain. This study aimed to perform a structural and crystallographic characterization of pulp stones and dentin from extracted human teeth. Methods: The sample consisted of 13 erupted and unerupted permanent human teeth diagnosed with pulp stones. The teeth were analyzed with scanning electron microscopy with secondary and backscattered electrons, energy-dispersive spectroscopy, micro-Raman spectroscopy, micro–X-ray diffraction, and inductively coupled plasma atomic emission spectroscopy. Results: The pulp stones revealed a heterogeneous morphology and structure compared with each other. Compared with the adjacent dentin, the pulp stones had a similar structure. From a chemical point of view, oxygen, calcium, carbon, and phosphorus were the most prevalent chemical elements in the inner part of the stones, whereas on the surface carbon, nitrogen, sulfur, chlorine, aluminum, potassium, zinc, copper, and lead were the most prevalent. Copper, iron, and zinc were higher in the stones than the dentin (P < .05). Statistically significant differences between the chemical structure of stones from erupted and unerupted teeth were not detected (P > .05). Conclusions: Pulp stones have structural and chemical properties that are similar to dentin. Variations in morphology are common.
KW - Dentin
KW - endodontics
KW - mineralization
KW - morphology
KW - pulp stone
UR - http://www.scopus.com/inward/record.url?scp=85075050906&partnerID=8YFLogxK
U2 - 10.1016/j.joen.2019.09.009
DO - 10.1016/j.joen.2019.09.009
M3 - Article
C2 - 31757339
AN - SCOPUS:85075050906
SN - 0099-2399
VL - 45
SP - 1504
EP - 1512
JO - Journal of Endodontics
JF - Journal of Endodontics
IS - 12
ER -