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Caries Research

Samilly Evangelista Souza, Aline Araújo Sampaio, Altair Antoninha Del Bel Cury, Yuri Wanderley Cavalcanti, Antônio Pedro Ricomini Filho, Jaime Aparecido Cury
Since there is no consensus about whether starch increases the cariogenic potential of sucrose, we used a validated 3-species biofilm model to evaluate if starch combined with sucrose provokes higher root dentine demineralization than sucrose alone. Biofilms (n = 18) composed by Streptococcus mutans (the most cariogenic bacteria), Actinomces naeslundii (which has amylolytic activity), and Streptococcus gordonii (which binds salivary amylase) were formed on root dentine slabs under exposure 8 ×/day to one of the following treatments: 0...
February 14, 2018: Caries Research
Camila A Zamperini, Ana K Bedran-Russo
This study investigated the remineralization effect of experimental mint formulations containing bioactive agents (xylitol; green tea extract, GT; and amorphous calcium phosphate, ACP) in the progression of artificially induced root caries. Root caries lesions were induced by demineralization solution (pH 4.6; 96 h; 37°C). The lesions were treated with mint A, mint B, mint C, xylitol, GT, ACP, or remineralization solution (RS; negative control). Specimens were pH-cycled through treatments (5×/day; 3 min) and 6 cycles of acidic (pH 5...
February 8, 2018: Caries Research
Jun Xu, Congcong Miao, Zhenchuan Tian, Jinlu Li, Chunmei Zhang, Dongmei Yang
OBJECTIVE: Matrix metalloproteinases (MMPs) exist in human saliva and dentin and play an important role in the degradation of organic matrix in teeth. Chemically modified tetracycline-3 (CMT-3) is an inhibitor of MMPs. CMT-3 has been used experimentally to treat caries since 1999, but no distinction between dental caries prevalence and dentin caries prevalence has been described. METHODS: A total of 65 Sprague-Dawley rats were randomly divided into three groups...
February 7, 2018: Caries Research
Maitê Cevallos Mijan, Jo E Frencken, Donald R Schwass, Sacha B Chaves, Soraya Coelho Leal
The objectives of the study were to quantify the dentine mineral concentration (DMC) in teeth restored conventionally, according to the atraumatic restorative treatment (ART) and ultraconservative (UCT) protocols (open cavities and small ART restorations), and the DMC underneath the open cavities of teeth managed by UCT versus nontreated, open cavities. We studied 50 teeth with restorations/open cavities, 39 restored teeth (9 by conventional restorative treatment [CRT], 17 by ART, and 13 by UCT) and 16 teeth with open cavities...
February 6, 2018: Caries Research
Lídia Lipták, Krisztina Szabó, Gábor Nagy, Sándor Márton, Melinda Madléna
The aim of this study was to investigate the effects of Cervitec Plus® on the level of mutans streptococcus (SM) and lactobacillus (LB) colonies and the development of white spot lesions (WSLs) in patients with fixed orthodontic appliances. Informed consent was obtained from 32 volunteers (age 16.5 ± 2.75 years). At baseline, levels of the bacterial colonies were determined in saliva and plaque using a chairside test (CRT Bacteria, Ivoclar-Vivadent, Schaan, Liechtenstein), and the number of WSLs was registered...
January 31, 2018: Caries Research
Anahita Jablonski-Momeni, Johanna Moos, Vahid Sakhaei Manesh, Richard Stoll
OBJECTIVE: Assessment of caries lesion activity is usually performed using visual-tactile criteria. A new approach is to use a system consisting of a photoprotein, which is specific for free calcium ions, along with an integrated camera that visualizes the elevated calcium ions on the lesion as a light signal (bioluminescence). This study aimed to evaluate the reproducibility and diagnostic accuracy of a newly developed bioluminescence system to assess caries lesion activity on occlusal surfaces in vitro...
January 31, 2018: Caries Research
João Gabriel S Souza, Bárbara E Costa Oliveira, Aline A Sampaio, Vinicius A Lages, Dayse A Romão, Andrea M E B L Martins
The aim of this study was to identify the association of the presence of root caries in older people with contextual and individual determinants using a multilevel model. Data from the National Survey of Oral Health collected in Brazil were used. A sample of older Brazilians (aged 65-74 years) was included and selected through multistage probability cluster sampling, using probability proportional to size. Contextual variables of municipalities and individual variables of older people were included. Descriptive, bivariate, and multilevel analyses were conducted...
January 27, 2018: Caries Research
Luiza P S Cassiano, Talita M S Ventura, Cintia M S Silva, Aline L Leite, Ana C Magalhães, Juliano P Pessan, Marília Afonso Rabelo Buzalaf
This study detected changes in the protein profile of the acquired enamel pellicle (AEP) formed in vivo after rinsing with whole milk, fat-free milk, or water. Nine subjects in good oral condition took part in the study. The acquired pellicle was formed in the morning, for 120 min, after prophylaxis with pumice. Following this, the volunteers rinsed with 10 mL of whole milk, fat-free milk, or deionized water for 30 s, following a blinded crossover protocol. After 60 min, the pellicle was collected with filter paper soaked in 3% citric acid and processed for analysis by liquid chromatography-electrospray ionization tandem mass spectrometry...
January 27, 2018: Caries Research
Megan Weber, Jenny Bogstad Søvik, Aida Mulic, Kathleen Deeley, Anne B Tveit, Jessalyn Forella, Nicholas Shirey, Alexandre R Vieira
Dental caries is a multifactorial infectious disease and a major public health problem estimated to affect 60-90% of school children as well as a vast number of adults. The aim of this work was to define patterns of progression of the disease based on longitudinal data in contrast to using a cross-sectional assessment. dmft/DMFT scores were collected at ages 5, 12, 14, 16, 17, and 18 from 876 individuals. We tested our newly defined phenotypes for association with genetic variants in genes shown to be associated with caries...
January 25, 2018: Caries Research
Tariq S Ghazal, Steven M Levy, Noel K Childers, Knute D Carter, Daniel J Caplan, John J Warren, Joseph E Cavanaugh, Justine Kolker
Survival analyses have been used to overcome some of the limitations encountered with other statistical analyses. Although extended Cox hazard modeling with time-dependent variables has been utilized in several medical studies, it has never been utilized in assessing the complex relationship between mutans streptococci (MS) acquisition (time-dependent covariate) and time to having dental caries (outcome). This study involved secondary analyses of data from a prospective study conducted at the University of Alabama at Birmingham...
January 24, 2018: Caries Research
Isabella Mota-Veloso, Isabela Almeida Pordeus, Márcio Alexandre Homem, Joana Ramos-Jorge, Fernanda Oliveira-Ferreira, Maria Letícia Ramos-Jorge, Saul Martins Paiva
Attention-deficit/hyperactivity disorder (ADHD) is a behavioural disorder that can affect one's performance in activities of daily living and can exert a negative impact on the oral health of children. OBJECTIVE: The aim of this work was to determine the association between ADHD (signs and executive functions) and dental caries in children aged 7-12 years. METHODS: A case-control study was conducted with 532 children in the city of Diamantina, Brazil. The case group was composed of children with caries and the control group was composed of children without caries...
January 23, 2018: Caries Research
Issarapong Kaewkamnerdpong, Sudaduang Krisdapong
Creating supportive oral health-related environments in schools is an important strategy for promoting schoolchildren's oral health. This study determined the associations between school environments and children's oral behaviour and dental caries. The data on school oral health-related environments were obtained through observation and interviews. Oral behaviour and dental caries data were collected through interviews and oral examinations of 984 sixth grade children. χ2 and multiple logistic regression, adjusted for sociodemographic and economic status, other school environment variables, and oral behaviour were used...
January 23, 2018: Caries Research
Dongru Chen, Qinghui Zhi, Yan Zhou, Ye Tao, Liping Wu, Huancai Lin
Research on the association between dental caries and body mass index (BMI) in children has shown contradictory results; thus we aimed to examine the association between dental caries and the full range of BMI classes among children. We comprehensively searched PubMed, Embase, and the Cochrane Library for studies published prior to March 2017. Articles comparing dental caries among the full range of BMI classes for children below 18 years of both genders were included. Fourteen studies were eligible for this study...
January 20, 2018: Caries Research
Qingru Jiang, Veera Kainulainen, Iva Stamatova, Riitta Korpela, Jukka H Meurman
Probiotic administration may favour caries prevention, as recent research has shown. This in vitro study aimed to investigate the growth of Lactobacillus rhamnosus GG (LGG) in experimental biofilms exposed to various carbohydrates, and also to assess its cariogenic potential. Multispecies experimental oral biofilms with or without LGG were grown with a sole-carbohydrate source (fructose/glucose/lactose/sorbitol/sucrose). The viable cells of LGG and structure of the biofilms were examined after 64.5 h of incubation, and pH values of spent media were measured at 16...
January 20, 2018: Caries Research
Patricia Estefania Aguirre, Melina Coelho, Thaís Oliveira, Daniela Rios, Agnes Fátima Cruvinel, Thiago Cruvinel
The diagnosis or suspicion of dental caries can lead people to seek additional information on the Internet through the use of structured queries in search engine tools. This action generates a considerable volume of data, which can be analyzed to provide a better understanding of the public's behavior linked to the consumption of oral health information. This study aimed to assess the volume and profile of web searches on dental caries-related queries performed by Google users from different countries. The monthly variation of the Search Volume Index (SVI) for dental caries was obtained in Google Trends for the period between January 2004 and September 2016...
January 20, 2018: Caries Research
Rafael Simões Gonçalves, Polliana Mendes Candia Scaffa, Marina Ciccone Giacomini, Cristina de Mattos Pimenta Vidal, Heitor Marques Honório, Linda Wang
The effect of sodium trimetaphosphate (STMP) as an antiproteolytic and remineralizing agent on demineralized dentin was evaluated in vitro. The inhibitory potential of STMP at 0.5, 1.5, 3.5, and 5% against recombinant matrix metalloproteinases (MMPs) MMPs-2 and -9 was assessed by zymography. To investigate its remineralization potential, 40 bovine root specimens were obtained and subjected to a demineralization protocol to produce caries-like dentin lesions. After that, dentin surfaces were divided into 3 areas: (1) mineralized (no treatment); (2) demineralized; and (3) demineralized/treated with STMP and submitted to a pH-cycling associated or not with STMP (1...
January 18, 2018: Caries Research
Richard J Wierichs, Sabrina Stausberg, Julian Lausch, Hendrik Meyer-Lueckel, Marcella Esteves-Oliveira
The aim of this study was to compare the caries-preventive effect of different fluoride varnishes on sound dentin as well as on artificial dentin caries-like lesions. Bovine dentin specimens (n = 220) with one sound surface (ST) and one artificial caries lesion (DT) were prepared and randomly allocated to 11 groups. The interventions before pH cycling were as follows: application of a varnish containing NaF (22,600 ppm F-; Duraphat [NaF0/NaF1]), NaF plus tricalcium phosphate (22,600 ppm F-; Clinpro White Varnish Mint [TCP0/TCP1]), NaF plus casein phosphopeptide-stabilized amorphous calcium phosphate complexes (CPP-ACP; 22,600 ppm F-; MI Varnish [CPP0/CPP1]), or silver diamine fluoride (SDF; 35,400 ppm F-; Cariestop 30% [SDF0/SDF1]) and no intervention (NNB/N0/N1)...
January 17, 2018: Caries Research
Nebu Philip, Bharat Suneja, Laurence J Walsh
Contemporary paradigms of dental caries aetiology focus on the ecology of the dental plaque biofilm and how local environmental factors can modulate this to cause disease. The crucial role that a healthy oral microbiome plays in preventing caries and promoting oral health is also being increasingly recognized. Based on these concepts, several ecological preventive approaches have been developed that could potentially broaden the arsenal of currently available caries-preventive measures. Many of these ecological approaches aim for long-term caries control by either disrupting cariogenic virulence factors without affecting bacterial viability, or include measures that can enhance the growth of health-associated, microbially diverse communities in the oral microbiome...
January 11, 2018: Caries Research
Juliana Schaia Rocha, Letícia Yumi Arima, Renata Iani Werneck, Samuel Jorge Moysés, Márcia Helena Baldani
Despite the fact that dental care attendance during pregnancy has been recommended by guidelines and institutions, the demand for dental services is still low among pregnant women. The aim of this study was to identify and analyze the determinants of dental care attendance during pregnancy. We performed a systematic literature search in the electronic databases PubMed, Scopus, Web of Science, Latin American and Caribbean Health Sciences Literature, Brazilian Library in Dentistry, Cumulative Index to Nursing and Allied Health Literature, and Medline using relevant keywords...
January 10, 2018: Caries Research
Jonathan E Creeth, Ritu Karwal, Anderson T Hara, Domenick T Zero
This study aimed to determine the effect of zinc ions and F concentration in a dentifrice on remineralization of early caries lesions in situ and on resistance to subsequent demineralization. This was a single-center, 6-period, 6-product, blinded (examiner, subject, analyst), randomized (n = 62), crossover study. Products (all NaF) were: 0, 250, 1,150 and 1,426 ppm F (dose-response controls), "Zn-A" (0.3% ZnCl2, 1,426 ppm F), and "Zn-B" (as Zn-A, with high-foaming surfactants) in a conventional silica base...
January 5, 2018: Caries Research
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