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Chaiwat A, Chunhacheevachaloke E, Kidkhunthod P, Pakawanit P, Ajcharanukul O. Enamel Remineralization and Crystallization after Fluoride Iontophoresis. J Dent Res 2023; 102:402-411. [PMID: 36546596 DOI: 10.1177/00220345221138513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Early caries lesions consist of noncavitated subsurface demineralization caused by the dissolution of hydroxyapatite from the surface to the subsurface area of the enamel. Such lesions cannot be remineralized effectively by the conventional treatment. Thus, there is a need for a noninvasive technique capable of delivering the remineralizing agent to subsurface sites. For this purpose, fluoride iontophoresis (IP) using weak currents has been investigated with some conflicting results and no information on the crystal structure and composition. Because enamel remineralization involves the role of fluid from dentin, the presence of enamel fluid is necessary to determine the repair associated with the physiological condition. This study aimed to investigate structural and compositional characteristics, including the remineralizing effect of 5% sodium fluoride (NaF) IP with different polarities, cathodal iontophoresis (CIP), and anodal iontophoresis (AIP) for the treatment of natural enamel caries under simulated pulpal pressure. A bulk measurement of the crystal structure inside the lesion was first determined using calcium (Ca) K-edge X-ray absorption spectroscopy. IP with both polarities significantly promoted subsurface remineralization. The CIP generated a significant increase in the Ca/phosphorus ratio, and fluoride at the surface lesion significantly correlated with higher mineral density (MD) and more strengthening crystal structure of the lesion volume, while the lesion's MD and other impurities at the lesion surface, mostly the carbonate ions, affected the significant increase in MD with the unchanged structure of the lesion volume after AIP. The CIP of NaF is an ideal method for rapid enamel remineralization and recrystallization of fluoroapatite/fluorohydroxyapatite.
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Affiliation(s)
- A Chaiwat
- Department of Pediatric and Preventive Dentistry, Faculty of Dentistry, Srinakharinwirot University, Bangkok, Thailand
| | - E Chunhacheevachaloke
- Department of Pediatric and Preventive Dentistry, Faculty of Dentistry, Srinakharinwirot University, Bangkok, Thailand
| | - P Kidkhunthod
- Synchrotron Light Research Institute (Public Organization) Muang District, Nakhon Ratchasima, Thailand
| | - P Pakawanit
- Synchrotron Light Research Institute (Public Organization) Muang District, Nakhon Ratchasima, Thailand
| | - O Ajcharanukul
- Department of Stomatology, Faculty of Dentistry, Srinakharinwirot University, Bangkok, Thailand
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Seredin P, Goloshchapov D, Buylov N, Kashkarov V, Emelyanova A, Eremeev K, Ippolitov Y. Compositional Analysis of the Dental Biomimetic Hybrid Nanomaterials Based on Bioinspired Nonstoichiometric Hydroxyapatite with Small Deviations in the Carbonate Incorporation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4453. [PMID: 36558306 PMCID: PMC9783965 DOI: 10.3390/nano12244453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/07/2022] [Accepted: 12/10/2022] [Indexed: 06/17/2023]
Abstract
In our paper, we discuss the results of a comprehensive structural-spectroscopic and microscopic analysis of non-stoichiometric nanocrystalline hydroxyapatite (CHAp) with low carbonate anion content and biomimetic hybrid nanomaterials produced on its basis. It was shown that hydroxyapatite nanocrystals synthesized by chemical precipitation and biogenic calcium source mimic the properties of biogenic apatite and also have a morphological organization of "core-shell" type. The "core" of the CHAp nanocrystal is characterized by an overabundance of calcium Ca/P~1.9. Thus "a shell" with thickness of ~3-5 nm is formed from intermediate apatite-like phases where the most probable are octocalcium phosphate, dicalcium phosphate dihydrate and tricalcium phosphate. The multimode model of the Raman profile of samples CHAp and biomimetic composites for spectral region 900-1100 cm-1 proposed in our work has allowed to allocate precise contribution of B-type carbonate substitution, taking into account the presence on a surface of "core" HAp nanocrystal of various third-party intermediate apatite-like phases. The calibration function constructed on the basis of the described model makes it possible to reliably determine small concentrations of carbonate in the structure of hydroxyapatite with the application of Raman express method of diagnostics. The results of our work can inspire researchers to study the processes of induced biomineralization in mineralized tissues of the human body, using non-destructive methods of control with simultaneous analysis of chemical bonding, as well as determining the role of impurity atoms in the functions exhibited by biotissue.
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Affiliation(s)
- Pavel Seredin
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
- Scientific and Educational Center, Nanomaterials and Nanotechnologies, Ural Federal University, Lenin Ave 51, 620002 Yekaterinburg, Russia
| | - Dmitry Goloshchapov
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Nikita Buylov
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Vladimir Kashkarov
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Anna Emelyanova
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Konstantin Eremeev
- Solid State Physics and Nanostructures Department, Voronezh State University, Universitetskaya Pl. 1, 394018 Voronezh, Russia
| | - Yuri Ippolitov
- Department of Pediatric Dentistry with Orthodontia, Voronezh State Medical University, Studentcheskaya Ul. 11, 394006 Voronezh, Russia
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Kuczumow A, Gorzelak M, Kosiński J, Lasota A, Blicharski T, Gągała J, Nowak J, Jarzębski M, Jabłoński M. Hierarchy of Bioapatites. Int J Mol Sci 2022; 23:ijms23179537. [PMID: 36076932 PMCID: PMC9455617 DOI: 10.3390/ijms23179537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/15/2022] [Accepted: 08/18/2022] [Indexed: 11/24/2022] Open
Abstract
Apatites are one of the most intensively studied materials for possible biomedical applications. New perspectives of possible application of apatites correspond with the development of nanomaterials and nanocompounds. Here, an effort to systematize different kinds of human bioapatites forming bones, dentin, and enamel was undertaken. The precursors of bioapatites and hydroxyapatite were also considered. The rigorous consideration of compositions and stoichiometry of bioapatites allowed us to establish an order in their mutual sequence. The chemical reactions describing potential transformations of biomaterials from octacalcium phosphate into hydroxyapatite via all intermediate stages were postulated. Regardless of whether the reactions occur in reality, all apatite biomaterials behave as if they participate in them. To conserve the charge, additional free charges were introduced, with an assumed meaning to be joined with the defects. The distribution of defects was coupled with the values of crystallographic parameters “a” and “c”. The energetic balances of bioapatite transformations were calculated. The apatite biomaterials are surprisingly regular structures with non-integer stoichiometric coefficients. The results presented here will be helpful for the further design and development of nanomaterials.
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Affiliation(s)
- Andrzej Kuczumow
- ComerLab Dorota Nowak, Radawiec Duży 196, 21-030 Motycz, Poland
- Correspondence: (A.K.); or (M.J.); Tel.: +48-535-255-775 (M.J.)
| | - Mieczysław Gorzelak
- Department of Orthopaedics and Rehabilitation, Medical University of Lublin, K. Jaczewskiego 8, 20-090 Lublin, Poland
| | - Jakub Kosiński
- Department of Orthopaedics and Rehabilitation, Medical University of Lublin, K. Jaczewskiego 8, 20-090 Lublin, Poland
| | - Agnieszka Lasota
- Chair and Department of Jaw Orthopedics, Medical University of Lublin, Chodźki 6, 20-093 Lublin, Poland
| | - Tomasz Blicharski
- Department of Orthopaedics and Rehabilitation, Medical University of Lublin, K. Jaczewskiego 8, 20-090 Lublin, Poland
| | - Jacek Gągała
- Department of Orthopaedics and Traumatology, Medical University of Lublin, K. Jaczewskiego 8, 20-090 Lublin, Poland
| | - Jakub Nowak
- ComerLab Dorota Nowak, Radawiec Duży 196, 21-030 Motycz, Poland
| | - Maciej Jarzębski
- Department of Physics and Biophysics, Poznan University of Life Sciences, Wojska Polskiego 38/42, 60-637 Poznan, Poland
- Correspondence: (A.K.); or (M.J.); Tel.: +48-535-255-775 (M.J.)
| | - Mirosław Jabłoński
- Department of Orthopaedics and Rehabilitation, Medical University of Lublin, K. Jaczewskiego 8, 20-090 Lublin, Poland
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Kuczumow A, Nowak J, Chałas R, Ptasiewicz M, Siejak P, Jarzębski M. Studies of Peculiar Mg-Containing and Oscillating Bioapatites in Sheep and Horse Teeth. Biomolecules 2021; 11:1436. [PMID: 34680071 PMCID: PMC8533064 DOI: 10.3390/biom11101436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 01/06/2023] Open
Abstract
New types of biological apatites have been discovered in molar sheep and horse teeth and are divided in two types. In the first and more general type, the release of Mg ions is parallel to the changes in composition of apatite leading to a final stoichiometric ratio of Ca to P ions, going from dentin depth towards the boundary of enamel with air. Inside dentin, another apatite sub-types were discovered with alternating layers of Mg-rich and C-rich apatites. The approximate formal stoichiometric relationships for these peculiar types of bioapatites are suggested. We identified two kinds of ion-exchanges responsible for formation of peculiar apatites. Various combinations of main and minor elements lead to new versions of biological apatites.
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Affiliation(s)
- Andrzej Kuczumow
- ComerLab Dorota Nowak, Radawiec Duży 196, 21-030 Motycz, Poland; (A.K.); (J.N.)
| | - Jakub Nowak
- ComerLab Dorota Nowak, Radawiec Duży 196, 21-030 Motycz, Poland; (A.K.); (J.N.)
| | - Renata Chałas
- Department of Oral Medicine, Medical University of Lublin, 20-093 Lublin, Poland; (R.C.); (M.P.)
| | - Maja Ptasiewicz
- Department of Oral Medicine, Medical University of Lublin, 20-093 Lublin, Poland; (R.C.); (M.P.)
| | - Przemysław Siejak
- Department of Physics and Biophysics, Poznań University of Life Sciences, 60-637 Poznań, Poland;
| | - Maciej Jarzębski
- Department of Physics and Biophysics, Poznań University of Life Sciences, 60-637 Poznań, Poland;
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Mosaad KE, Shoueir KR, Saied AH, Dewidar MM. New Prospects in Nano Phased Co-substituted Hydroxyapatite Enrolled in Polymeric Nanofiber Mats for Bone Tissue Engineering Applications. Ann Biomed Eng 2021; 49:2006-2029. [PMID: 34378121 DOI: 10.1007/s10439-021-02810-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 06/03/2021] [Indexed: 01/12/2023]
Abstract
The most common forms of tissue impairment are fracture bones and significant bone disorders caused by multiple traumas or normal aging. Surgical care sometimes necessitates the placement of a temporary or permanent prosthesis, which continues to be a challenge for orthopedic surgeons, including those with large bone defects. Electrospun scaffolds made from natural and synthetic nanofiber-based polymers are studied as natural extracellular matrix (ECM)-like scaffolds for tissue engineering. Besides, nanostructured materials have properties and functions depending on the scale of natural materials such as hydroxyapatite (HAP), ranging from 1 to 100 nm, which activity was proficient upon enrolled in nanofiber mats. The use of nanofibers in combination with nano-HAP has increased the scaffold's ability to replicate the construction of natural bone tissue that is the aim of the present text. In bone engineering, nanofiber substrates facilitate cell adhesion, proliferation, and differentiation, while HAP induces cells to secrete ECM for bone mineralization and development. This review aims to draw the reader's attention to the critical issues with synthetic and natural polymers containing HAP in bone tissue engineering; co-substituted hydroxyapatite has also been mentioned.
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Affiliation(s)
- Kareem E Mosaad
- Faculty of Engineering, Mechanical Department, Al-Azahar University, Cairo, Egypt
| | - Kamel R Shoueir
- Institute of Nanoscience & Nanotechnology, Kafrelsheikh University, 33516, Kafrelsheikh, Egypt.
- Institut de Chimie et Procédés Pour l'Énergie, l'Environnement et la Santé (ICPEES), CNRS, UMR 7515, Université de Strasbourg, 25 rue Becquerel, 67087, Strasbourg, France.
| | - Ahmed H Saied
- Department of Mechanical Engineering, Faculty of Engineering, Kafrelsheikh University, El-Gaish Street, Kafrelsheikh, Egypt
| | - Montasser M Dewidar
- Department of Mechanical Engineering, Faculty of Engineering, Kafrelsheikh University, El-Gaish Street, Kafrelsheikh, Egypt
- Higher Institute of Engineering and Technology, Kafrelsheikh, Egypt
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Novel Approach to Tooth Chemistry. Quantification of the Dental-Enamel Junction. Int J Mol Sci 2021; 22:ijms22116003. [PMID: 34199407 PMCID: PMC8199634 DOI: 10.3390/ijms22116003] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 01/02/2023] Open
Abstract
The dentin-enamel junction (DEJ) is known for its special role in teeth. Several techniques were applied for the investigation of the DEJ in human sound molar teeth. The electron (EPMA) and proton (PIXE) microprobes gave consistent indications about the variability of elemental concentrations on this boundary. The locally increased and oscillating concentrations of Mg and Na were observed in the junction, in the layer adhering to the enamel and covering roughly half of the DEJ width. The chemical results were compared with the optical profiles of the junction. Our chemical and optical results were next compared with the micromechanical results (hardness, elastic modulus, friction coefficient) available in the world literature. A strong correlation of both result sets was proven, which testifies to the self-affinity of the junction structures for different locations and even for different kinds of teeth and techniques applied for studies. Energetic changes in tooth strictly connected with crystallographic transformations were calculated, and the minimum energetic status was discovered for DEJ zone. Modeling of both walls of the DEJ from optical data was demonstrated. Comparing the DEJ in human teeth with the same structure found in dinosaur, shark, and alligator teeth evidences the universality of dentin enamel junction in animal world. The paper makes a contribution to better understanding the joining of the different hard tissues.
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