1
|
Kim HJ, Jang JH, Woo SU, Choi KK, Kim SY, Ferracane JL, Lee JH, Choi D, Choi S, Kim S, Bang A, Kim DS. Effect of Novel Bioactive Glass-Containing Dentin Adhesive on the Permeability of Demineralized Dentin. MATERIALS 2021; 14:ma14185423. [PMID: 34576647 PMCID: PMC8465205 DOI: 10.3390/ma14185423] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/10/2021] [Accepted: 09/14/2021] [Indexed: 11/16/2022]
Abstract
This study aimed to evaluate the effect of a novel bioactive glass (BAG)-containing dentin adhesive on the permeability of demineralized dentin. Bioactive glass (85% SiO2, 15% CaO) was fabricated using the sol-gel process, and two experimental dentin adhesives were prepared with 3 wt% silica (silica-containing dentin adhesive; SCA) or BAG (BAG-containing dentin adhesive; BCA). Micro-tensile bond strength (μTBS) test, fracture mode analysis, field-emission scanning electron microscopy (FE-SEM) analysis of adhesive and demineralized dentin, real-time dentinal fluid flow (DFF) rate measurement, and Raman confocal microscopy were performed to compare SCA and BCA. There was no difference in μTBS between the SCA and BCA (p > 0.05). Multiple precipitates were evident on the surface of the BCA, and partial occlusion of dentinal tubules was observed in FE-SEM of BCA-approximated dentin. The DFF rate was reduced by 50.10% after BCA approximation and increased by 6.54% after SCA approximation. Raman confocal spectroscopy revealed an increased intensity of the hydroxyapatite (HA) peak on the dentin surface after BCA application. The novel BAG-containing dentin adhesive showed the potential of both reducing dentin permeability and dentin remineralization.
Collapse
Affiliation(s)
- Hyun-Jung Kim
- Department of Conservative Dentistry, Kyung Hee University Dental Hospital, Seoul 02453, Korea;
| | - Ji-Hyun Jang
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea; (J.-H.J.); (K.-K.C.); (D.C.)
| | - Sang Uk Woo
- Department of Conservative Dentistry, Graduate School, Kyung Hee University, Seoul 02453, Korea;
| | - Kyoung-Kyu Choi
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea; (J.-H.J.); (K.-K.C.); (D.C.)
| | - Sun-Young Kim
- Department of Conservative Dentistry, School of Dentistry, Dental Research Institute, Seoul National University, Seoul 03080, Korea;
| | - Jack L. Ferracane
- Department of Restorative Dentistry, School of Dentistry, Oregon Health & Science University, Portland, OR 97201, USA;
| | - Jung-Hwan Lee
- Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 31116, Chungcheongnam-Do, Korea;
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Chungcheongnam-Do, Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan 31116, Chungcheongnam-Do, Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Cheonan 31116, Chungcheongnam-Do, Korea
| | - Dongseok Choi
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea; (J.-H.J.); (K.-K.C.); (D.C.)
- Oregon Health & Science University-Portland State University School of Public Health, Oregon Health & Science University, Portland, OR 97239, USA
| | - Samjin Choi
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02453, Korea; (S.C.); (S.K.); (A.B.)
| | - Soogeun Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02453, Korea; (S.C.); (S.K.); (A.B.)
| | - Ayoung Bang
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02453, Korea; (S.C.); (S.K.); (A.B.)
| | - Duck-Su Kim
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul 02453, Korea; (J.-H.J.); (K.-K.C.); (D.C.)
- Correspondence: ; Tel.: +82-2-958-9330; Fax: +82-2-960-5108
| |
Collapse
|
2
|
Kerezoudi C, Gogos C, Samanidou V, Tziafas D, Palaghias G. Evaluation of monomer leaching from a resin cement through dentin by a novel model. Dent Mater 2016; 32:e297-e305. [PMID: 27671464 DOI: 10.1016/j.dental.2016.09.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 03/22/2016] [Accepted: 09/03/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE To evaluate the elution of HEMA, BPA, UDMA and BisGMA from a conventional resin cement (Multilink Automix®, Ivoclar Vivadent) through human dentin, under constant positive pulpal pressure. METHODS Ten human dentin disks (n=10) were adjusted in a new testing device and transparent glass slabs were luted with Multilink Automix® resin cement, following manufacturer's instructions, under a steady pressure of 25N. The device was filled with Ringer's solution. At 5min, 20min, 1h, 2h, 21h, 3 days, 7 days, 10days and 21days time intervals, the whole eluate was retrieved from each one of the ten specimens and then, the specimens were refilled with fresh Ringer's solution. The eluates were analyzed by High Performance Liquid Chromatography (HPLC). RESULTS HEMA was detected in the eluate of all of the specimens, from 5min until 10 days. At four of the specimens, HEMA was also detected in the 21days eluate at very low concentrations. BPA, UDMA and BisGMA were not detected at any eluate. An unknown compound was also detected at 4.4min. SIGNIFICANCE The concentrations of HEMA that enabled to diffuse from Multilink Automix® cement in an aqueous solution, through a dentin barrier, did not reach toxic levels and BPA, UDMA and BisGMA were not detected at all.
Collapse
Affiliation(s)
- C Kerezoudi
- Department of Basic Dental Sciences, School of Dentistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
| | - C Gogos
- Department of Endodontics, School of Dentistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
| | - V Samanidou
- Laboratory of Analytical Chemistry, Department of Chemistry, School of Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
| | - D Tziafas
- Department of Endodontics, School of Dentistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
| | - G Palaghias
- Department of Basic Dental Sciences, School of Dentistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
| |
Collapse
|
3
|
Ouadiay A, Taitai A. Fixation Preferentielle D'ion Magnesium sur une Apatite Phosphocalcique Deficiente. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/713744556] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A. Ouadiay
- a Université Ibn Tofail , Kénitra, Maroc
| | - A. Taitai
- a Université Ibn Tofail , Kénitra, Maroc
| |
Collapse
|
4
|
Tsumura M, Okumura R, Tatsuyama S, Ichikawa H, Muramatsu T, Matsuda T, Baba A, Suzuki K, Kajiya H, Sahara Y, Tokuda M, Momose Y, Tazaki M, Shimono M, Shibukawa Y. Ca2+ Extrusion via Na+-Ca2+ Exchangers in Rat Odontoblasts. J Endod 2010; 36:668-74. [DOI: 10.1016/j.joen.2010.01.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Revised: 01/06/2010] [Accepted: 01/15/2010] [Indexed: 11/16/2022]
|
5
|
Magloire H, Couble ML, Thivichon-Prince B, Maurin JC, Bleicher F. Odontoblast: a mechano-sensory cell. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2009; 312B:416-24. [DOI: 10.1002/jez.b.21264] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
6
|
Kurata S, Sato K, Kanri Y, Aoba T. Solubility Properties of Carbonatoapatites with Discrete Stoichiometric Compositions. J Oral Biosci 2006. [DOI: 10.1016/s1349-0079(06)80024-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
7
|
Ozok AR, Wu MK, Ten Cate JM, Wesselink PR. Effect of dentinal fluid composition on dentin demineralization in vitro. J Dent Res 2004; 83:849-53. [PMID: 15505234 DOI: 10.1177/154405910408301105] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Dentin demineralization is reduced by perfusion with water. We hypothesized that a simulated dentinal fluid (SDF) that contains albumin, in addition to electrolytes, would be more effective in reducing dentin demineralization than water alone, and this effect would increase with increasing flow rate of SDF. Perfusion rate in tooth segments that carried buccal cervical dentin windows was measured in a fluid transport set-up. These windows were then demineralized under perfusion with water, or SDF at 1.47 kPa for 31 days. We analyzed integrated mineral loss and lesion depth with the use of transverse microradiography (TMR), which revealed that 38% more mineral dissolved from dentin lesions perfused with water than from those perfused with SDF. The former were also 18% deeper. Flow rate of dentinal fluid showed no correlation with demineralization. We concluded that composition of dentinal fluid is an important determinant of the rate of lesion formation and progression in dentin.
Collapse
Affiliation(s)
- A R Ozok
- Department of Cariology Endodontology Pedodontology, Academic Center for Dentistry Amsterdam (ACTA), Louwesweg 1, 1066 EA, Amsterdam, Netherlands
| | | | | | | |
Collapse
|
8
|
Pashley DH, Pashley EL, Carvalho RM, Tay FR. The effects of dentin permeability on restorative dentistry. Dent Clin North Am 2002; 46:211-45, v-vi. [PMID: 12014033 DOI: 10.1016/s0011-8532(01)00009-x] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The permeability properties of dentin determine its sensitivity and the degree of pulpal response to restorative procedure materials and microleakage. Most pulpal reactions are due to bacteria or bacterial products that permeate across dentin. These reactions can be prevented if dentin is sealed with resins as soon as it is exposed. In the future, restorative dentists may employ topical application of biologic growth factors to permeate across dentin to modify the formation of reactionary or reparative dentin, thereby lowering dentin permeability and protecting the pulp.
Collapse
Affiliation(s)
- David H Pashley
- Department of Oral Biology and Maxillofacial Pathology, School of Dentistry, Medical College of Georgia, Augusta, GA 30912-1129, USA.
| | | | | | | |
Collapse
|
9
|
Aoba T. The effect of fluoride on apatite structure and growth. CRITICAL REVIEWS IN ORAL BIOLOGY AND MEDICINE : AN OFFICIAL PUBLICATION OF THE AMERICAN ASSOCIATION OF ORAL BIOLOGISTS 1997; 8:136-53. [PMID: 9167089 DOI: 10.1177/10454411970080020301] [Citation(s) in RCA: 99] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Fluoride participates in many aspects of calcium phosphate formation in vivo and has enormous effects on the process and on the nature and properties of formed mineral. The most well-documented effect of fluoride is that this ion substitutes for a column hydroxyl in the apatite structure, giving rise to a reduction of crystal volume and a concomitant increase in structural stability. In the process of enamel mineralization during amelogenesis (a unique model for the cell-mediated formation of well-crystallized carbonatoapatite), free fluoride ions in the fluid phase are supposed to accelerate the hydrolysis of acidic precursor(s) and increase the driving force for the growth of apatitic mineral. Once fluoride is incorporated into the enamel mineral, the ion likely affects the subsequent mineralization process by reducing the solubility of the mineral and thereby modulating the ionic composition in the fluid surrounding the mineral, and enhancing the matrix protein-mineral interaction. But excess fluoride leads to anomalous enamel formation by retarding tissue maturation. It is worth noting that enameloid/enamel minerals found in vertebrate teeth have a wide range of CO3 and fluoride substitutions. In the evolutionary process from elasmobranch through enameloid to mammalian enamel, the biosystems appear to develop regulatory functions for limiting the fluoridation of the formed mineral, but this development is accompanied by an increase of carbonate substitution or defects in the mineral. In research on the cariostatic effect of fluoride, considerable emphasis is placed on the roles of free fluoride ions (i.e., preventing the dissolution and accelerating the kinetics of remineralization) in the oral fluid bathing tooth mineral. Fluoride also has been used for the treatment of osteoporosis, but much still remains to be learned about maximizing the benefit and minimizing the risk of fluoride when used as a public health measure.
Collapse
Affiliation(s)
- T Aoba
- Nippon Dental University, Department of Pathology, Tokyo, Japan
| |
Collapse
|
10
|
Stead WJ, Orchardson R, Warren PB. A mathematical model of potassium ion diffusion in dentinal tubules. Arch Oral Biol 1996; 41:679-87. [PMID: 9015569 DOI: 10.1016/s0003-9969(96)00073-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Desensitizing agents containing potassium ions (K+) are believed to inactivate intradental nerves by raising extracellular [K+]. A mathematical model was used to investigate factors affecting [K+] in dentinal tubules. The most important factors affecting the steady-state tubular [K+] were the tubular fluid-flow velocity, salivary [K+] and the permeability to potassium (k) of the barrier between the tubule and the pulp. Tubular [K+] decreased with increasing outward flow velocity and increasing k. whereas the dimensions of the tubule and odontoblast process had little effect. Following a 1 min simulated application of 500 mmol/1 K+ to the dentine surface, [K+] at the inner end of the tubule increased above steady-state levels for 20-30 min. The maximum [K+] attained at the inner end of the tubule was around 30 mmol/l for an impermeable barrier (k = 0) and flow velocity of 1.4 microns/s, but lower maximum tubular [K+] were achieved when either the outward flow velocity or k was increased. The model suggests that applying potassium-containing preparations to dentine may increase [K+] at the inner ends of dentinal tubules to levels sufficient to inactivate intradental nerves. However, the localized increase in [K+] is transient, and the concentration change will be lessened by conditions that increase the tubular fluid-flow velocity or the permeability of the barrier between the tubule and pulp.
Collapse
Affiliation(s)
- W J Stead
- Unilever Dental Research, Port Sunlight Laboratory, Bebington, Wirral, U.K
| | | | | |
Collapse
|
11
|
Linde A, Goldberg M. Dentinogenesis. CRITICAL REVIEWS IN ORAL BIOLOGY AND MEDICINE : AN OFFICIAL PUBLICATION OF THE AMERICAN ASSOCIATION OF ORAL BIOLOGISTS 1993; 4:679-728. [PMID: 8292714 DOI: 10.1177/10454411930040050301] [Citation(s) in RCA: 302] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The formation of dentin, dentinogenesis, comprises a sophisticated interplay between several factors in the tissue, cellular as well as extracellular. Dentin may be regarded as a calcified connective tissue. In this respect, as well as in its mode of formation, it is closely related to bone. Using dentinogenesis as an experimental model to study biomineralization provides several practical advantages, and the results may be extrapolated to understand similar processes in other tissues, primarily bone. After describing dentin structure and composition, this review discusses items such as the morphology of dentinogenesis; the dentinogenically active odontoblast, transport, and concentrations of mineral ions; the constituents of the dentin organic matrix; and the presumed mechanisms involved in mineral formation.
Collapse
Affiliation(s)
- A Linde
- Department of Oral Biochemistry, Faculty of Odontology, University of Göteborg, Sweden
| | | |
Collapse
|
12
|
Aoba T, Moreno EC, Shimoda S. Competitive adsorption of magnesium and calcium ions onto synthetic and biological apatites. Calcif Tissue Int 1992; 51:143-50. [PMID: 1422954 DOI: 10.1007/bf00298503] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Magnesium (Mg) is a conspicuous constituent of hard tissues but its possible role in biomineralization is poorly understood. It is possible that Mg2+ adsorbed onto bioapatites may contribute to the modulation of crystal growth as such inhibitory activity has been reported for synthetic apatites. The present study was undertaken to determine the adsorption isotherms of Mg ions onto synthetic apatites and biominerals in tooth and bone tissues in the presence of other ions of natural occurrence. Synthetic crystals used as adsorbents were hydroxyapatite and, as a better prototype for the biomineral, Mg-containing carbonatoapatite. Human enamel and dentin materials were obtained from extracted, caries-free, permanent teeth. Porcine dentin materials at two developmental stages were obtained from erupted deciduous and unerupted permanent teeth of a 6-month-old slaughtered piglet. Porcine bone was obtained from the cortical portion of the mandible of the same animal. All biomineral samples were pulverized and then treated by plasma ashing (deproteination) at about 60 degrees C. Each of the powdered samples was equilibrated in solutions containing various initial concentrations of Mg2+, Ca2+, and Na+ (or K+) as nitrate salts. Following equilibration, concentrations (and activities) of magnesium and calcium ions in the experimental solution were determined. The pH values of the equilibrium solutions were in the range of 6.2-6.5. Experimental data of the Mg adsorption onto hydroxyapatite were interpreted on the basis of a Langmuir-type model for binary systems assuming competition of Mg2+ and Ca2+ for the same adsorption sites on the crystal surfaces of the apatites.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- T Aoba
- Forsyth Dental Center, Boston, MA 02115
| | | | | |
Collapse
|
13
|
Lundgren T, Nannmark U, Linde A. Calcium ion activity and pH in the odontoblast-predentin region: ion-selective microelectrode measurements. Calcif Tissue Int 1992; 50:134-6. [PMID: 1571832 DOI: 10.1007/bf00298790] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Ca2+ ion activities and pH were measured in the odontoblast/predentin region of rat incisors by means of the microelectrode technique. In Ringer solution, the apparent resting membrane potential of odontoblasts was determined to be -24 +/- 4 mV (mean +/- SE), whereas the odontoblast intracellular pH was found to be 6.66 +/- 0.02. The values obtained are within the range of other cell types, as measured in similar incubating solutions. The pH in the extracellular predentin was higher than the intracellular pH, 7.00 +/- 0.02. The Ca2+ ion activity in predentin (pCa = 2.94 +/- 0.15) was found to be significantly (P less than 0.001) higher than that in the dental pulp extracellular fluid (pCa = 3.37 +/- 0.14). The 2-3 times higher calcium activity extracellularly in predentin, compared with the dental pulp, implies the existence of some ion-concentrating mechanism across the odontoblast layer in the direction of the mineralization front.
Collapse
Affiliation(s)
- T Lundgren
- Department of Oral Biochemistry, University of Göteborg, Gothenburg, Sweden
| | | | | |
Collapse
|