1
|
Leite KLDF, Martins ML, Monteiro ASN, Vieira TI, Alexandria AK, Rocha GM, Fonseca-Gonçalves A, Pithon MM, Cavalcanti YW, Maia LC. In-vitro effect of a single application of CPP-ACP pastes and different fluoridated solutions on the prevention of dental caries around orthodontic brackets. Dental Press J Orthod 2024; 28:e2321383. [PMID: 38198388 PMCID: PMC10773443 DOI: 10.1590/2177-6709.28.6.e2321383.oar] [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: 03/16/2021] [Accepted: 11/26/2023] [Indexed: 01/12/2024] Open
Abstract
OBJECTIVE To assess the in-vitro effect of single applications of CPP-ACP pastes and different fluoridated solutions on the prevention of dental caries around orthodontic brackets. MATERIAL AND METHODS Tooth/bracket sets (n=65) were immersed in artificial saliva (1h at 37ºC) and randomly subjected to single applications (100µL; 1min) of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP emulsion), CPP-ACP with fluoride (CPP-ACPF emulsion), solutions of titanium tetrafluoride (TiF4) or sodium fluoride (NaF), or no treatment (CG). Multispecies biofilm (5 x 105 CFU/mL) was formed in the presence of 2% sucrose. After 24 h, the pH and the concentration of total soluble fluoride (TSF) were analyzed by culture medium. The presence of active white spot lesions (WSL) evaluated by macroscopic examination and the percent surface mineral loss (%SML) were analyzed. Also, the topography of enamel was detected by analysis of scanning electron microscopy (SEM). The data was assessed by chi-square, Kruskal-Wallis, and Mann-Whitney tests (p < 0.05). RESULTS Fluoride-containing compounds led to a smaller pH reduction than did CPP-ACP and CG (p<0.05). There was difference in TSF between the groups (p<0.05), denoted as TiF4> NaF > CPP-ACPF > CPP-ACP > CG. Regarding the presence of WSL and %SML, the NaF group obtained lower values (p<0.05), while TiF4 and CPP-ACPF were similar (p>0.05). SEM demonstrated that fluoride-free groups had a larger surface dissolution. CONCLUSION Fluoridated groups including solutions and CPP-ACPF were more effective than CPP-ACP in reducing enamel demineralization around orthodontic brackets after a single application.
Collapse
Affiliation(s)
- Karla Lorene de França Leite
- Universidade Federal do Rio de Janeiro, Faculdade de Odontologia, Departamento de Odontopediatria e Ortodontia (Rio de Janeiro/RJ, Brazil)
| | - Mariana Leonel Martins
- Universidade Federal do Rio de Janeiro, Faculdade de Odontologia, Departamento de Odontopediatria e Ortodontia (Rio de Janeiro/RJ, Brazil)
| | - Amanda Souza Nunes Monteiro
- Universidade Federal do Rio de Janeiro, Faculdade de Odontologia, Departamento de Odontopediatria e Ortodontia (Rio de Janeiro/RJ, Brazil)
| | - Thiago Isidro Vieira
- Universidade Federal do Rio de Janeiro, Faculdade de Odontologia, Departamento de Odontopediatria e Ortodontia (Rio de Janeiro/RJ, Brazil)
| | - Adílis Kalina Alexandria
- Universidade Federal do Rio de Janeiro, Faculdade de Odontologia, Departamento de Odontopediatria e Ortodontia (Rio de Janeiro/RJ, Brazil)
| | - Gustavo Miranda Rocha
- Universidade Federal do Rio de Janeiro, Instituto de Biofísica Carlos Chagas Filho (Rio de Janeiro/RJ, Brazil)
| | - Andréa Fonseca-Gonçalves
- Universidade Federal do Rio de Janeiro, Faculdade de Odontologia, Departamento de Odontopediatria e Ortodontia (Rio de Janeiro/RJ, Brazil)
| | - Matheus Melo Pithon
- Universidade Estadual do Sudoeste da Bahia, Departamento de Saúde (Jequié/BA, Brazil)
| | - Yuri Wanderley Cavalcanti
- Universidade Federal da Paraíba, Departamento de Odontologia Clínica e Social (João Pessoa/PB, Brazil)
| | - Lucianne Cople Maia
- Universidade Federal do Rio de Janeiro, Faculdade de Odontologia, Departamento de Odontopediatria e Ortodontia (Rio de Janeiro/RJ, Brazil)
| |
Collapse
|
2
|
Hoxie AM, Neves ADA, Moss K, de Vasconcellos AB, Zandona AF, Ribeiro AA. Microcomputed Tomography Mineral Density Profile as Reference Standard for Early Carious Lesion Activity Assessment. Caries Res 2023; 57:220-230. [PMID: 37586341 PMCID: PMC10641798 DOI: 10.1159/000533563] [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: 11/10/2022] [Accepted: 08/08/2023] [Indexed: 08/18/2023] Open
Abstract
Early caries diagnosis is crucial to treatment decisions in dentistry and requires identification of lesion activity: whether a carious lesion is active (progressively demineralizing) or arrested (progressively remineralizing). This study aimed to identify microtomographic (micro-CT) differences between active and arrested smooth surface enamel lesions, to quantify those micro-CT differences by creating thresholds for ex vivo caries activity assessment to serve as a future reference standard, and to validate those thresholds against the remaining sample. Extracted human permanent teeth (n = 59) were selected for sound surfaces and non-cavitated smooth surface carious lesions. Each surface was then examined for caries activity by calibrated individuals via visual-tactile examination using the International Caries Classification and Management System (ICCMS) activity criteria. Each tooth was scanned via micro-CT and the mineral density was plotted against lesion depth. The area under the curve (AUC) was calculated and represented the loss of density for the outermost 96 μm of enamel. AUC thresholds obtained from micro-CT were established to classify sound, remineralized, and demineralized surfaces against the gold standard examiner's lesion assessment of sound, inactive, and active lesions, respectively. The established AUC thresholds demonstrated moderate agreement with the assessment in identifying demineralized lesions (k = 0.45), with high sensitivity (0.73) and specificity (0.77). This study demonstrated quantifiable differences among demineralized lesions, remineralized lesions, and sound surfaces, which contributes to the establishment of micro-CT as a reference standard for caries activity that may be used to improve clinical and laboratorial dental caries evaluations.
Collapse
Affiliation(s)
- Adam Michael Hoxie
- Division of Diagnostic Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Division of Craniofacial and Surical Care, Department of Orthodontics, UNC Adams School of Dentistry, Chapel Hill, NC, USA
| | - Aline de Almeida Neves
- Department of Pediatric Dentistry and Orthodontics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Kevin Moss
- Statistics, Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Adalberto Bastos de Vasconcellos
- Division of Comprehensive Oral Health, Operative Dentistry, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Andrea Ferreira Zandona
- Department of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Columbus, OH, USA
| | - Apoena Aguiar Ribeiro
- Division of Diagnostic Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| |
Collapse
|
3
|
Pires CW, Lenzi TL, Soares FZM, Rocha RDO. Bonding of universal adhesive system to enamel surrounding real-life carious cavities. Braz Oral Res 2019; 33:e038. [PMID: 31141036 DOI: 10.1590/1807-3107bor-2019.vol33.0038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 03/26/2019] [Indexed: 11/22/2022] Open
Abstract
This study aimed to evaluate the bond strength of a universal adhesive system to enamel surrounding real-life carious cavities. Twenty-eight permanent molars (n = 7) with carious lesions in dentin were subjected to selective carious tissue removal to firm dentin and had their crowns sectioned longitudinally. A universal adhesive system (Single Bond Universal [SBU] used in either etch-and-rinse and self-etch strategies) was compared with an etch-and-rinse Adper Single Bond 2 (ASB) and a self-etch Clearfil SE Bond (CSE) adhesive systems (control systems). Adhesives were applied on the enamel, assumed demineralized, surrounding the cavity margins and on sound enamel (control substrate). Composite cylinders were built (0.72 mm2) and microshear bond strength (µSBS) test was performed after 24 h of water storage. The µSBS values (MPa) were analyzed using two-way ANOVA and Tukey's post hoc tests (α = 0.05). Bond strength values obtained in demineralized enamel surrounding carious cavity margins were significantly lower than that obtained in sound enamel (distant from carious cavity margins) (p = 0.035). The bonding strategy of the SBU did not influenced the bond strength values, which were higher than that obtained with ASB. CSE showed similar µSBS values to ASB and SBU in the self-etch mode. In conclusion, the bond strength to enamel assumed demineralized is lower than to sound enamel. The enamel surrounding carious cavities jeopardize the bonding of universal adhesive system. The bond strength of universal adhesive is similar, regardless to bonding strategy.
Collapse
Affiliation(s)
- Carine Weber Pires
- Centro Universitário da Serra Gaúcha - FSG, School of Dentistry, Caxias do Sul, RS, Brazil
| | - Tathiane Larissa Lenzi
- Universidade Federal do Rio Grande do Sul, Department of Surgery and Orthopedics, Porto Alegre, RS, Brazil
| | - Fabio Zovico Maxnuck Soares
- Universidade Federal de Santa Maria - UFSM, School of Dentistry, Department of Restorative Dentistry, Santa Maria, RS, Brazil
| | | |
Collapse
|
4
|
Hayashi-Sakai S, Sakamoto M, Hayashi T, Kondo T, Sugita K, Sakai J, Shimomura-Kuroki J, Ike M, Nikkuni Y, Nishiyama H. Evaluation of permanent and primary enamel and dentin mineral density using micro-computed tomography. Oral Radiol 2018; 35:29-34. [PMID: 30484178 DOI: 10.1007/s11282-018-0315-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 12/29/2017] [Indexed: 11/24/2022]
Abstract
OBJECTIVES The present study was performed to investigate the mineral density distribution in enamel and dentin for both permanent and primary teeth and to establish the standard density per tooth type using micro-computed tomography (CT). METHODS Fifty-seven extracted human teeth (37 permanent, 20 primary) were evaluated in the present study. The enamel and dentin mineral densities in the extracted teeth were measured using micro-CT. Cubic regression curves were used to determine the mineral density distribution in the enamel and dentin for each tooth type. RESULTS The mean values, distributions, and regression equations of the mineral densities were obtained. The mean mineral density values for permanent enamel and dentin were significantly higher than those for their primary counterparts for each tooth type. CONCLUSIONS In the present study, we demonstrated the distribution of mineral density in sound enamel and dentin and attempted to determine the standard mineral density for each tooth type using micro-CT. The mineral density distributions found in this study contribute to our understanding of the mechanical properties of enamel and dentin. A positive correlation suggests that the systemic bone mineral density could be predicted based on the analysis of exfoliated teeth, such as in patients with hypophosphatasia. The present results may be useful in establishing a numerical standard for the mechanism involved in root fracture and for early detection of root fracture risk.
Collapse
Affiliation(s)
- Sachiko Hayashi-Sakai
- Division of Oral and Maxillofacial Radiology, Niigata University Graduate School of Medical and Dental Sciences, 5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan.
| | - Makoto Sakamoto
- Department of Health Sciences, Faculty of Medicine, Niigata University, 2-746 Asahimachi-dori, Chuo-ku, Niigata, 951-8518, Japan
| | - Takafumi Hayashi
- Division of Oral and Maxillofacial Radiology, Niigata University Graduate School of Medical and Dental Sciences, 5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Tatsuya Kondo
- Department of Health Sciences, Faculty of Medicine, Niigata University, 2-746 Asahimachi-dori, Chuo-ku, Niigata, 951-8518, Japan
| | - Kaito Sugita
- Department of Health Sciences, Faculty of Medicine, Niigata University, 2-746 Asahimachi-dori, Chuo-ku, Niigata, 951-8518, Japan
| | - Jun Sakai
- Department of System and Automotive Engineering, Niigata College of Technology, 5-13-7 Kamishinei-cho, Nishi-ku, Niigata, 950-2076, Japan
| | - Junko Shimomura-Kuroki
- Department of Pediatric Dentistry, The Nippon Dental University, School of Life Dentistry at Niigata, 1-8 Hamaura-cho, Chuo-ku, Niigata, 951-8580, Japan
| | - Makiko Ike
- Division of Oral and Maxillofacial Radiology, Niigata University Graduate School of Medical and Dental Sciences, 5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Yutaka Nikkuni
- Division of Oral and Maxillofacial Radiology, Niigata University Graduate School of Medical and Dental Sciences, 5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Hideyoshi Nishiyama
- Division of Oral and Maxillofacial Radiology, Niigata University Graduate School of Medical and Dental Sciences, 5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| |
Collapse
|
5
|
Pang L, Zhi Q, Zhuang P, Yu L, Tao Y, Lin H. Variation in Enamel Formation Genes Influences Enamel Demineralization In Vitro in a Streptococcus mutans Biofilm Model. Front Physiol 2017; 8:851. [PMID: 29163197 PMCID: PMC5670349 DOI: 10.3389/fphys.2017.00851] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 10/12/2017] [Indexed: 01/25/2023] Open
Abstract
Genetic studies have shown that variations in enamel formation genes are associated with caries susceptibility. The aim of this study was to test in vitro whether variants in these genes are associated with dental enamel demineralization in a Streptococcus mutans biofilm model. DNA and enamel samples were obtained from 213 individuals. DNA was extracted from saliva, and 16 single nucleotide polymorphisms were analyzed. The physical and chemical properties of sound enamel samples and the mineral loss and the lesion depth of the demineralized enamel samples under cariogenic challenge were analyzed. Microhardness, enamel chemicals, mineral loss and demineralization depth were compared between different genotypes at each single nucleotide polymorphism. The GG genotype of TUFT1 (rs17640579) and the GT genotype of MMP20 (rs1612069) exhibited increased microhardness (p = 0.044 and 0.016, respectively). The GG genotype of AMBN (rs7694409) had a higher magnesium level, while the CT genotype of TFIP11 (rs2097470) had a lower magnesium level (p = 0.044 and 0.046, respectively). The GT genotype of MMP20 (rs1612069) had a higher calcium level (p = 0.034). The GG genotype of AMBN (rs13115627), the AG genotype of ENAM (rs12640848) and the AA genotype of MMP20 (rs2292730) had a lower phosphorus level (p = 0.012, 0.006, and 0.023, respectively). The GG genotype of AMBN (rs13115627) was also associated with a higher calcium-phosphorus ratio (p = 0.034). Individuals with the CC genotype of TFIP11 (rs134143) exhibited significantly more mineral loss (p = 0.011) and a deeper lesions (p = 0.042). Individuals with the TT genotype of TFIP11 (rs2097470) had more mineral loss (p = 0.018). Individuals with the GG genotype of TUFT1 (rs17640579) exhibited a shallower demineralization depth (p = 0.047). Individuals with the GT genotype of MMP20 (rs1612069) exhibited a shallower demineralization depth (p = 0.042). Individuals with the GG genotype of ENAM (rs12640848) exhibited less mineral loss (p = 0.01) and a shallower demineralization depth (p = 0.03). Genetic variations in TFIP11, TUFT1, MMP20, and ENAM influenced enamel demineralization in a Streptococcus mutans biofilm model.
Collapse
Affiliation(s)
- Liangyue Pang
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China.,Department of Preventive Dentistry, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Qinghui Zhi
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China.,Department of Preventive Dentistry, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Peilin Zhuang
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China.,Department of Stomatology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Lixia Yu
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China.,Department of Preventive Dentistry, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Ye Tao
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China.,Department of Preventive Dentistry, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Huancai Lin
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China.,Department of Preventive Dentistry, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| |
Collapse
|