1
|
Saxena K, Ann CM, Azwar MABM, Banavar SR, Matinlinna J, Peters OA, Daood U. Effect of strontium fluoride on mechanical and remineralization properties of enamel: An in-vitro study on a modified orthodontic adhesive. Dent Mater 2024; 40:811-823. [PMID: 38490919 DOI: 10.1016/j.dental.2024.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 01/05/2024] [Accepted: 02/12/2024] [Indexed: 03/17/2024]
Abstract
OBJECTIVES Evaluate the ability of strontium fluoride on bond strength and enamel integrity after incorporation within orthodontic adhesive system as a delivery vehicle. METHODS Experimental orthodontic adhesive system Transbond™ XT were modified with 1% Sr2+, 0.5% SrF2, 1% strontium, 0.5% Sr2+, 1% F-, 0.5% F-, and no additions were control. Mixing of formulation was monitored using Fourier transform infrared spectroscopy. Small-molecule drug-discovery suite was used to gain insights into Sr2+, F-, and SrF2 binding. Shear bond testing was performed after 6-months of ageing. Enamel blocks were cut, and STEM pictures were recorded. Specimens were indented to evaluate elastic modulus. Raman microscope was used to collect Raman spectra and inspected using a scanning electron microscope. Crystal structural analysis was performed using X-ray diffraction. Effect of material on cellular proliferation was determined. Confocal was performed to evaluate the effect of formulation on biofilms. RESULTS FTIR of modified adhesives depicted peak changes within range due to various functional groups existing within samples. TEM represented structurally optimized hexagonal unit-cell of hydroxyapatite. Mean shear bond strength is recorded highest for Transbond XT with 1% SrF2. Dead bacterial percentage appeared higher in 0.5% SrF2 and 1% F- specimens. Crystal lengths showed an increase in 0.5% and 1% SrF2 specimens. Phase contrast within TEM images showed a union of 0.5% SrF2 crystal with enamel crystal with higher elastic modulus and highly mineralized crystalline hydroxyapatite. Intensity of ν1 PO43- and ν1 CO32- along with carbonate - / ν1PO43- ratio displayed good association with strontium fluoride. The formulation showed acceptable cell biocompatibility (p < 0.353). All specimens displayed characteristic diffraction maxima of different apatite angles within XRD. SIGNIFICANCE Experimental results suggested good biocompatibility, adequate mechanical strength, and far-ranging crystallization ability. This would provide a new strategy to overcome the two major challenges of fixed orthodontics, biofilm growth, and demineralization of enamel.
Collapse
Affiliation(s)
- Kirti Saxena
- Children and Community Oral Health, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Chew Ming Ann
- Restorative Dentistry Division, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Wilayah Persekutuan, Kuala Lumpur 57000, Malaysia
| | - Masturina Anati Binti Mohd Azwar
- Restorative Dentistry Division, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Wilayah Persekutuan, Kuala Lumpur 57000, Malaysia
| | - Spoorthi Ravi Banavar
- Children and Community Oral Health, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia
| | - Jukka Matinlinna
- Dental Materials Science, Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Sai Ying Pun, Special Administrative Regions of China; Biomaterials Science, Division of Dentistry, School of Medical Sciences, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Ove A Peters
- Department of Endodontics, Arthur A Dugoni School of Dentistry, University of the Pacific, San Francisco, CA, USA; School of Dentistry, The University of Queensland, Herston, Qld 4006, Australia
| | - Umer Daood
- Restorative Dentistry Division, School of Dentistry, International Medical University Kuala Lumpur, 126, Jalan Jalil Perkasa 19, Bukit Jalil, Wilayah Persekutuan, Kuala Lumpur 57000, Malaysia; Dental Materials Science, Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Sai Ying Pun, Special Administrative Regions of China.
| |
Collapse
|
2
|
Yezdani S, Khatri M, Vidhya S, Mahalaxmi S. Effect of strontium fluorophosphate bioactive glass on color, microhardness and surface roughness of bleached enamel. Technol Health Care 2024; 32:285-292. [PMID: 37270825 DOI: 10.3233/thc-230074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Undesirable effects of tooth bleaching can alter the biomechanical properties of enamel. OBJECTIVE To determine the influence of strontium fluorophosphate bioactive glass (Sr-FPG) on color, microhardness and surface roughness of enamel bleached with 35% hydrogen peroxide. METHODS The labial enamel of 36 extracted intact human anterior teeth were divided into 3 groups (n= 12), group 1 (HP): bleaching with 35% hydrogen peroxide only, group 2 (Sr-HP): bleaching with Sr-FPG incorporated 35% hydrogen peroxide and group 3 (HP-SrFPG): bleaching with 35% hydrogen peroxide followed by remineralization with Sr-FPG. Four consecutive eight-minute applications of the bleaching gel were done twice in all the groups. Color change (ΔE), microhardness and surface roughness were evaluated at baseline, post-bleaching and post-remineralization using spectrophotometer, Vickers hardness tester and profilometric analysis respectively. RESULTS The mean ΔE among the groups was statistically similar (p> 0.05). Bleaching with HP significantly reduced microhardness (p< 0.05), whereas bleaching with Sr-HP and HP-SrFPG did not (p> 0.05). Post-bleaching microhardness in Sr-HP was significantly higher than HP-SrFPG (p< 0.05). An increased surface roughness was seen in Sr-HP bleached samples (p< 0.05). CONCLUSION The addition of Sr-FPG to hydrogen peroxide significantly improved enamel microhardness than its use post-bleaching. An increase in surface roughness was seen post-bleaching with HP and Sr-HP.
Collapse
|
3
|
Damar S, Gümrü Çelikel AD, Pınar Erdem A. Comparative evaluation of fluoride-free remineralization agents with and without Er,Cr:YSGG laser on artificial enamel remineralization. Lasers Med Sci 2023; 38:172. [PMID: 37526766 DOI: 10.1007/s10103-023-03837-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 07/23/2023] [Indexed: 08/02/2023]
Abstract
This study aimed to evaluate the efficacy of fluoride-free remineralizing agents in initial enamel caries, with and without combined Er,Cr:YSGG laser application. The remineralization effect of various agents and their combinations on artificial initial caries was investigated using 10 experimental groups (n = 7): NC, negative control; PC, positive control; TM, calcium-phosphate compounds (CPP-ACP); TD, theobromine-containing toothpaste; RG, ROCS® remineralizing gel; L, Er,Cr:YSGG laser (2780 nm; 0.25 W; repetition rate, 20 Hz; pulse duration, 140 μs; tip diameter, 600 μm; without air/water cooling); L + fluoride toothpaste; L + TM; L + TD; and L + RG. The demineralized bovine enamel specimens were subjected to an 8-day pH cycle by daily application of the remineralizing agents and laser therapy once prior to the pH cycle and paste application. The enamel samples underwent the Vickers surface microhardness test, and one sample per group was analyzed with scanning electron microscopy. The Kruskal Wallis test was used to compare the microhardness recovery percentage (SMHR%) for each group, and multiple comparisons were made with the Dunn test. Groups L (p = 0.003), RG (p = 0.019), L + TM (p < 0.001), L + fluoride toothpaste (p = 0.001),and L + RG (p = 0.036) exhibited significant increase in SMHR%. The tested remineralizing agents exhibited no statistically significant difference in effect when used alone and in combination with Er,Cr:YSGG laser. Combined application of Er,Cr:YSGG laser and ROCS® remineralization gel effectively promoted enamel remineralization, while use of CPP-ACP and fluoride toothpaste alone was ineffective. Theobromine-containing toothpaste exhibited the least SMHR%. Long-term evaluation of these agents is recommended.
Collapse
Affiliation(s)
- Serhat Damar
- Department of Pediatric Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | | | - Arzu Pınar Erdem
- Department of Pediatric Dentistry, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| |
Collapse
|
4
|
Wahono NA, Wakeling LA, Dirks W, Banks DA, Shepherd TJ, Ford D, Valentine RA. Use of zinc deposited in deciduous teeth as a retrospective measurement of dietary zinc exposure during early development. FRONTIERS IN ORAL HEALTH 2023; 4:1119086. [PMID: 36908692 PMCID: PMC9998501 DOI: 10.3389/froh.2023.1119086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 02/06/2023] [Indexed: 03/14/2023] Open
Abstract
Purpose We proposed that zinc (Zn) deposition in deciduous teeth would be a timed record of exposure to this essential micronutrient over very early life. We tested this hypothesis by gathering information on the maternal and child's diet during pregnancy and early infancy and measuring mineral deposition in the dentine at points during deciduous tooth development. Methods We developed a short food frequency questionnaire (S-FFQ) to record consumption of food containing Zn during pregnancy and over the first year of life of the child in an Indonesian population. Zn, Sr and Ca were measured by laser ablation ICP-MS in a series of points across the developmental timeline in deciduous teeth extracted from 18 children undergoing the process as part of dental treatment whose mothers completed the SFFQ. Mothers and children were classified into either high Zn or low Zn groups according to calculated daily Zn intake. Results The Zn/Sr ratio in dentine deposited over late pregnancy and 0-3 months post-partum was higher (p < 0.001, 2-way ANOVA; p < 0.05 by Holm-Sidak post hoc test) in the teeth of children of mothers classified as high Zn consumers (n = 10) than in children of mothers classified as low Zn consumers (n = 8). Conclusion The S-FFQ was validated internally as adequately accurate to measure zinc intake retrospectively during pregnancy and post-partum (∼7 years prior) by virtue of the correlation with measurements of zinc in deciduous teeth. The ratio of Zn/Sr in deciduous teeth appears to be a biomarker of exposure to zinc nutrition during early development and offers promise for use as a record of prior exposure along a timeline for research studies and, potentially, to identify individuals at heightened risk of detrimental impacts of poor early life zinc nutrition on health in later life and to implement preventative interventions.
Collapse
Affiliation(s)
- N A Wahono
- Pediatric Dentistry Department, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia
| | - L A Wakeling
- School of Dental Science, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - W Dirks
- Department of Anthropology, University of Durham, Durham, United Kingdom
| | - D A Banks
- Faculty of Environment, School of Earth and Environment, University of Leeds, Leeds, United Kingdom
| | - T J Shepherd
- School of Dental Science, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - D Ford
- Faculty of Health and Life Sciences, Northumbria University, Newcastle Upon Tyne, United Kingdom
| | - R A Valentine
- School of Dental Science, Newcastle University, Newcastle Upon Tyne, United Kingdom
| |
Collapse
|
5
|
Easy, rapid and high-throughput analytical sensing platform for theobromine quantification in chocolate and cocoa products based on batch injection analysis with amperometric detection. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.105035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
6
|
Durhan MA, Ozsalih S, Gokkaya B, Kulan PY, Kargul B. Caries Preventive Effects of Theobromine Containing Toothpaste on Early Childhood Caries: Preliminary Results. Acta Stomatol Croat 2021; 55:18-27. [PMID: 33867534 PMCID: PMC8033621 DOI: 10.15644/asc55/1/3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Objective Enamel remineralizing effects of theobromine have received much attention from the clinicians. The aim of this study was to investigate the caries preventive effect of theobromine containing toothpaste on children with early childhood caries (ECC). Material and Methods Salivary pH, buffering capacity and frequency of Streptococcus mutans (SM) levels were measured. Each child was assigned either fluoridated or theobromine containing toothpaste. The changes were analyzed using Laser Fluorescence system. Statistical analyses were performed. Results We included 13 children (mean age 4.25) with 145 teeth in the fluoridated toothpaste (Colgate Kids toothpaste) group; 13 children (mean age 4.46) with 115 teeth in theobromine containing toothpaste (TheodentTMKids toothpaste) group. Both toothpastes demonstrated enamel remineralization and were effective in increasing the buffering capacity and pH (p < 0.05). A statistically significant decrease in S. mutans levels was found in both toothpaste groups (p<0.05). Conclusion Both toothpaste group showed a statistically significant amount of enamel remineralization. Since theobromine had the added benefits of increasing the salivary pH and decreasing the S.mutans levels, theobromine containing toothpastes can be considered effective agents in remineralizing white spot lesions and can be used in prevention of early enamel lesions.
Collapse
Affiliation(s)
- Muesser Ahu Durhan
- - Marmara University, Faculty of Dentistry, Department of Paediatric Dentistry, Istanbul, Turkey
| | - Seda Ozsalih
- - Marmara University, Faculty of Dentistry, Department of Paediatric Dentistry, Istanbul, Turkey
| | - Berna Gokkaya
- - Department of Paediatric Dentistry Bahcelievler Oral and Dental Health Hospital, Istanbul, Turkey
| | - Pinar Yildiz Kulan
- - Marmara University, Faculty of Dentistry, Department of Paediatric Dentistry, Istanbul, Turkey
| | - Betul Kargul
- - Marmara University, Faculty of Dentistry, Department of Paediatric Dentistry, Istanbul, Turkey
| |
Collapse
|
7
|
Okuyama K, Matsuda Y, Yamamoto H, Sakurai M, Naito K, Shintani K, Saito T, Hayashi M, Tamaki Y. Distribution of elements in teeth and inhibition of demineralization by titanium fluoride: Effects of concentration and pH in a titanium fluoride solution. Dent Mater J 2021; 40:736-742. [PMID: 33518692 DOI: 10.4012/dmj.2020-193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The purpose of this study was to assess the effects of titanium fluoride (TiF4) concentration and pH on fluoride distribution and demineralization of root dentin surfaces. Concentrations of 0.1%, 1%, and 2% TiF4 (pH 1), 1% TiF4 solution adjusted to pH 4, 5, 6, and 1.35% sodium fluoride (NaF) solution were applied to root dentin surfaces. Each specimen was subjected to pH cycling (pH: 4.5-7.0) for 4 weeks. Lesion depth and calcium, fluorine, and titanium distribution were then evaluated. Our limited study indicates that lesion depth and fluorine and titanium distribution in dentin depend on the concentration of a TiF4 solution. We also found that a 1% TiF4 solution adjusted to a pH 4-6 can reduce demineralization as effectively as a similar concentration of NaF.
Collapse
Affiliation(s)
- Katsushi Okuyama
- Department of Dental Materials Science, Division of Oral Functional Sciences and Rehabilitation, Asahi University School of Dentistry
| | - Yasuhiro Matsuda
- Division of Clinical Cariology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido
| | - Hiroko Yamamoto
- Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry
| | - Masahiko Sakurai
- Division of Clinical Cariology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido
| | - Katsuaki Naito
- Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry
| | - Kohei Shintani
- Department of Dental Materials Science, Division of Oral Functional Sciences and Rehabilitation, Asahi University School of Dentistry
| | - Takashi Saito
- Division of Clinical Cariology and Endodontology, Department of Oral Rehabilitation, School of Dentistry, Health Sciences University of Hokkaido
| | - Mikako Hayashi
- Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry
| | - Yukimichi Tamaki
- Department of Dental Materials Science, Division of Oral Functional Sciences and Rehabilitation, Asahi University School of Dentistry
| |
Collapse
|
8
|
Dai LL, Nudelman F, Chu CH, Lo ECM, Mei ML. The effects of strontium-doped bioactive glass and fluoride on hydroxyapatite crystallization. J Dent 2021; 105:103581. [PMID: 33434634 DOI: 10.1016/j.jdent.2021.103581] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 12/17/2020] [Accepted: 01/05/2021] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES This study investigated the effects of a new strontium-doped bioactive glass and fluoride on hydroxyapatite crystallization. METHODS We designed an in vitro experiment with calcium phosphate (CaCl2·2H2O + K2HPO4 in buffer solution) with different concentrations of strontium-doped bioactive glass (1 mg/mL or 5 mg/mL), and different concentrations of fluoride (0 ppm, 1 ppm or 5 ppm). Tris-buffered saline served as negative control. After incubation at 37 ℃ for 48 h, the shape and organization of crystals were examined by transmission electron microscopy (TEM) and electron diffraction. Structure of the crystals was assessed by powder X-ray diffraction (P-XRD) and unit cell parameters were calculated. Characterization of the crystals were performed by Raman spectroscopy and Fourier Transform Infrared Spectroscopy (FTIR). RESULTS TEM and selected-area electron diffraction revealed that the precipitates in all experimental groups were crystalline apatite. There was an interaction between strontium and fluoride with different concentrations on crystal thickness (p = 0.008). P-XRD indicated the formation of strontium-substituted-fluorohydroxyapatite and strontium-substituted-hydroxyapatite in the groups with both bioactive glass and fluoride. Expansion or contraction of crystal unit cell was influenced by the concentrations of strontium and fluoride. Raman spectra showed strong phosphate band at 960 cm-1 in all experimental groups and displayed no obvious shift. FTIR results confirmed the formation of apatite. CONCLUSIONS The results of this study suggest that strontium-doped bioactive glass and fluoride have synergistic effects on hydroxyapatite crystallization. CLINICAL SIGNIFICANCE Strontium-doped bioactive glass and fluoride have synergistic effects on hydroxyapatite crystallization by producing strontium-substituted-hydroxyapatite and strontium-substituted-fluorohydroxyapatite with enhanced bioactivity and reduced solubility which could be beneficial for caries management.
Collapse
Affiliation(s)
- Lin Lu Dai
- Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region.
| | - Fabio Nudelman
- EaStCHEM, School of Chemistry, The University of Edinburgh, Edinburgh, UK.
| | - Chun Hung Chu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region.
| | - Edward Chin Man Lo
- Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region.
| | - May Lei Mei
- Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region; Faculty of Dentistry, University of Otago, Dunedin, New Zealand.
| |
Collapse
|
9
|
Nassar HM, Lippert F. Artificial Caries Lesion Characteristics after Secondary Demineralization with Theobromine-Containing Protocol. Molecules 2021; 26:molecules26020300. [PMID: 33435546 PMCID: PMC7827480 DOI: 10.3390/molecules26020300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/26/2020] [Accepted: 01/04/2021] [Indexed: 11/24/2022] Open
Abstract
Developing artificial caries lesions with varying characteristics is needed to adequately study caries process in vitro. The objective of this study was to investigate artificial caries lesion characteristics after secondary demineralization protocol containing theobromine and fluoride. Sixty bovine enamel slabs (4 × 3 mm) were demineralized using a Carbopol-containing protocol for 6 days. A baseline area (2 × 3 mm) was protected with acid-resistant nail varnish, after which specimens were exposed for 24 h to a secondary demineralization protocol containing acetic acid plus one of four fluoride/theobromine combinations (n = 15): theobromine (50 or 200 ppm) and fluoride (0 or 1 ppm). Specimens were sectioned and analyzed using transverse microradiography for changes in mineral content, lesion depth, and surface layer mineralization. Data was analyzed using paired t-test and analysis of variance followed by Bonferroni test at 0.05 significance level. After secondary demineralization, fluoride-containing groups had significantly deeper lesions (p = 0.002 and 0.014) compared to the group with 0 ppm fluoride and 50 ppm theobromine. Mineral content and lesion depth were significantly different compared to baseline for all groups. Theobromine did not show an added effect on mineral uptake. Theobromine-containing groups exhibited particularly deep lesions with a more uniform mineral profile in the presence of fluoride.
Collapse
Affiliation(s)
- Hani M. Nassar
- Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, P.O. Box 80209, Jeddah 21589, Saudi Arabia
- Correspondence: ; Tel.: +966-12-695-2000
| | - Frank Lippert
- Department of Cariology, Operative Dentistry, and Dental Public Health, School of Dentistry, Indiana University, 415 Lancing Street, Indianapolis, IN 46202, USA;
| |
Collapse
|
10
|
Thorn AK, Lin WS, Levon JA, Morton D, Eckert GJ, Lippert F. The effect of theobromine on the in vitro de- and remineralization of enamel carious lesions. J Dent 2020; 103S:100013. [PMID: 34059300 DOI: 10.1016/j.jjodo.2020.100013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVES This in vitro study investigated the effect of theobromine on the de- and remineralization of enamel carious lesions under plaque fluid-like conditions. METHODS Early carious lesions were created in 272 bovine enamel specimens and assigned to sixteen groups (n=17) based on Knoop surface microhardness (SMH). Lesions were demineralized again under plaque fluid-like conditions in the presence of fluoride (0.2 or 1ppm) and theobromine (0; 10; 100 or 200ppm) at different pH values (5.5 or 7.0) in a factorial design. SMH was determined again and percent SMH recovery (%SMHr) calculated. Three-way ANOVA was used for the fixed effects of fluoride, theobromine and pH levels to compare the differences between each level. RESULTS The three-way interaction was not significant (p=0.712). The two-way interaction between fluoride and pH was significant (p=0.030), whereas those between fluoride and theobromine as well as that for pH and theobromine were not (p=0.478 and p=0.998, respectively). Theobromine did not affect %SMHr at any of the tested concentrations. There were trends for the higher fluoride concentration and the higher pH resulting in more rehardening with the lesions exposed to 0.2ppm fluoride at pH 5.5 displaying significantly less rehardening than those exposed to 0.2ppm fluoride at pH of 7.0 and lesions exposed to 1ppm fluoride at pH of 5.5. CONCLUSION Theobromine, when continuously present in a plaque fluid-like medium at various concentrations and at different pH values, does not affect de- or remineralization of enamel carious lesions under the presently studied conditions. CLINICAL SIGNIFICANCE Based on the presently available evidence, theobromine cannot be recommended as an anticaries agent.
Collapse
Affiliation(s)
- Anna K Thorn
- Indiana University School of Dentistry, Department of Prosthodontics, 1121 W Michigan St., Indianapolis, IN, 46202, USA
| | - Wei-Shao Lin
- Indiana University School of Dentistry, Department of Prosthodontics, 1121 W Michigan St., Indianapolis, IN, 46202, USA
| | - John A Levon
- Indiana University School of Dentistry, Department of Prosthodontics, 1121 W Michigan St., Indianapolis, IN, 46202, USA
| | - Dean Morton
- Indiana University School of Dentistry, Department of Prosthodontics, 1121 W Michigan St., Indianapolis, IN, 46202, USA
| | - George J Eckert
- Indiana University School of Medicine, Department of Biostatistics, 410 W. Tenth St., Suite 3000, Indianapolis, IN, 46202, USA
| | - Frank Lippert
- Indiana University School of Dentistry, Department of Cariology, Operative Dentistry and Dental Public Health, 1121 W Michigan St., Indianapolis, IN, 46202, USA.
| |
Collapse
|
11
|
Premnath P, John J, Manchery N, Subbiah GK, Nagappan N, Subramani P. Effectiveness of Theobromine on Enamel Remineralization: A Comparative In-vitro Study. Cureus 2019; 11:e5686. [PMID: 31720155 PMCID: PMC6823004 DOI: 10.7759/cureus.5686] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background Remineralizing agents demonstrate potential to reverse early carious lesions. Theobromine containing dentifrices claim to remineralize enamel lesions effectively. The aim of this in-vitro study was to evaluate and compare the remineralization potential of dentifrices containing theobromine, 0.21% sodium fluoride (NaF) with functionalized tricalcium phosphate (f-TCP) and amine fluoride on artificial enamel caries. Materials and methods Sound extracted human premolars were demineralized to produce deep artificial carious lesions. The teeth were sectioned longitudinally and allocated to three treatment groups with nine specimens in each group: Group A (NaF + f-TCP), Group B (amine fluoride), and Group C (theobromine). The specimens were then subjected to pH cycling for seven days. Confocal laser scanning microscopy (CLSM) was utilized to record the patterns of demineralization and remineralization. One-way ANOVA and paired t-test were used to analyze changes in lesion depth. The level of significance was set at p<0.05. Results All three dentifrices effectively remineralized artificial carious lesions (paired t-test, p<0.001). Of the groups, Group A (54.97%) reported the highest percentage change in lesion depth values followed closely by Group B (51.51%) and Group C (31.71%), respectively. Conclusion Within this in-vitro study, theobromine containing dentifrice was effective in remineralizing lesions of enamel. However, theobromine demonstrated less remineralization potential in comparison to dentifrices containing NaF + f-(TCP) and amine fluoride.
Collapse
Affiliation(s)
- Parvathy Premnath
- Public Health Dentistry, Asan Memorial Dental College and Hospital, Chengalpattu, IND
| | - Joseph John
- Public Health Dentistry, Saveetha Dental College, Saveetha University, Chennai, IND
| | - Nithin Manchery
- Oral Health Centre, The University of Queensland, Brisbane, AUS
| | - Gireesh K Subbiah
- National Institute for Research In Tuberculosis, Indian Council of Medical Research, Chennai, IND
| | - Nagappan Nagappan
- Public Health Dentistry, Chettinad Dental College & Research Institute, Kanchipuram, IND
| | - Prabhu Subramani
- Public Health Dentistry, Asan Memorial Dental College and Hospital, Chengalpattu, IND
| |
Collapse
|
12
|
Cevallos González FM, Dos Santos Araújo EM, Lorenzetti Simionato MR, Kfouri Siriani L, Armas Vega ADC, Studart Medeiros I, Bona Matos A. Effects of theobromine addition on chemical and mechanical properties of a conventional glass ionomer cement. Prog Biomater 2019; 8:23-29. [PMID: 30725401 PMCID: PMC6424986 DOI: 10.1007/s40204-019-0107-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 01/12/2019] [Indexed: 12/13/2022] Open
Abstract
In vitro effect of 1% theobromine addition on the physical and chemical properties of conventional glass ionomer (GIC) cement was investigated. Conventional GIC (GIC-C) and 1% theobromine added to GIC (GIC-THEO) specimens were compared regarding the microhardness (n = 10), sorption (n = 5), solubility (n = 5), color change (n = 10), fluoride release in saliva (n = 10) and the amount of biofilm deposition (n = 20). Compared against conventional GIC, adding 1% theobromine increased microhardness (p < 0.05), while its sorption, solubility, color and fluoride release to saliva (p > 0.05) remained unchanged. On the other hand, Streptococcus mutans biofilm amount deposited on its surface decreased statistically when theobromine was added to GIC (p < 0.05). Based on the results, it could be concluded that 1% theobromine addition to GIC can be a good strategy as it keeps some of its properties and improves microhardness and biofilm deposits strengthening its role in the preventive approach of dentistry.
Collapse
Affiliation(s)
- Fabricio Marcelo Cevallos González
- Inter Institutional PhD Program at School of Dentistry of University of São Paulo (USP), São Paulo, SP, Brazil
- School of Dentistry, Central University of Ecuador, Quito, Ecuador
| | | | | | - Luciana Kfouri Siriani
- Department of Operative Dentistry, School of Dentistry, University of São Paulo (USP), São Paulo, Brazil
| | | | - Igor Studart Medeiros
- Department of Biomaterials and Oral Biology, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil
| | - Adriana Bona Matos
- Department of Operative Dentistry, School of Dentistry, University of São Paulo (USP), Av. Prof. Lineu Prestes 2227, Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil.
| |
Collapse
|
13
|
Švorc Ľ, Haššo M, Sarakhman O, Kianičková K, Stanković DM, Otřísal P. A progressive electrochemical sensor for food quality control: Reliable determination of theobromine in chocolate products using a miniaturized boron-doped diamond electrode. Microchem J 2018. [DOI: 10.1016/j.microc.2018.07.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|