European Archives of Paediatric Dentistry最新文献

Purpose: Although a series of studies on OXIS contacts have been performed, studies regarding changes in OXIS contacts over time are lacking. Therefore, this study aimed to evaluate the change in contact type between primary molars after 3 years in children aged 3-7 years.

Methods: This longitudinal study was conducted using 2922 sectional die models of 926 children. At baseline (T0), the contact type between the primary molars was scored using replication via the sectional die model method according to the OXIS criteria. After 3 years, the sectional die models of the same children were scored using the same criteria (T1).

Results: McNemar's tests revealed a significant change in contacts from baseline to 3 years. The post hoc test explained specific changes in the contacts that were observed to be significant. These were O to X (p < 0.001), O to I (p < 0.001), O to S (p = 0.035), and I to X (p < 0.001).

Conclusions: A significant change in OXIS contact over time was observed. The O-type contact underwent the maximum change. The least and most stable contacts are the "O" and "I" types, respectively. This change in contact type with age may alter the risk of caries in children.

Aim: To investigate the association between presence of caries in anterior teeth and bullying victimization in schoolchildren.

Methods: A cross-sectional study was conducted in Brazil with a sample of 387 schoolchildren aged 6 to 10 years. The presence of moderate/extensive dental caries was assessed using the International System for the Evaluation and Detection of Dental Caries (ICDAS-II). The children answered the "Olweus Bullying" (QBO). Descriptive analyses were performed, and the associations between bullying victimization and independent variables collected were determined by univariate and multivariate Poisson regression.

Results: The prevalence of bullying victimization was 66.4%. Bullying victimization was higher among children who had moderate/extensive caries in some anterior teeth (p = 0.010). 8-year-old (p = 0.048), 9-year-old (p = 0.001), and 10-year-old (p = 0.002) children reported greater bullying victimization when compared to 6-year-olds.

Conclusion: The presence of moderate/extensive dental caries in anterior teeth is associated with bullying victimization in schoolchildren.

Purpose: This study aimed to evaluate the effects of two surface treatments on the tensile bond strength of prefabricated zirconia crowns (PZCs) using bioactive and resin cements.

Methods: Forty extracted human primary maxillary incisors were prepared and divided into four groups based on surface treatment and cement type: (1) sandblast with bioactive cement, (2) sandblast with resin cement, (3) 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) with bioactive cement, and (4) 10-MDP with resin cement. After 24 h of cementation, specimens underwent 5000 thermocycling cycles between 5 °C and 55 °C. Tensile bond strengths were measured using a universal testing machine. The data were analyzed using two-way ANOVA and Tukey's post hoc test, with significance set at p < 0.05.

Results: The mean tensile bond strengths observed were 2.25 ± 1.27 MPa for sandblast with bioactive cement, 1.39 ± 0.95 MPa for sandblast with resin cement, 2.45 ± 1.15 MPa for 10-MDP with bioactive cement, and 1.68 ± 1.03 MPa for 10-MDP with resin cement. Significant improvements in bond strength were observed in the bioactive cement group treated with 10-MDP compared to those treated with sandblasting (p < 0.05). The 10-MDP treatment did not enhance bond strength for the resin cement compared to sandblasting.

Conclusions: Bioactive cement generally provides a higher tensile bond strength than resin cement. While 10-MDP treatment enhances bond strength when used with bioactive cement, it does not show a similar enhancement when used with resin cement compared to sandblasting, indicating its effectiveness is selective based on the type of cement used.

Purpose: Little is known about the knowledge of paediatric dentists on bruxism in children. The aim of this cross-sectional study was to assess the knowledge of paediatric dentists on the concept, associated factors of bruxism and management of sleep bruxism (SB) in children'.

Methods: An electronic questionnaire was sent to paediatric dentists in the state of Goiás, Brazil. Information was collected on (1) characteristics of the participants; (2) the concept of bruxism; (3) diagnosis; (4) associated factors; (5) strategies for the management of SB; and (6) updated knowledge on bruxism in children. The data were analysed descriptively.

Results: Fifty-seven paediatric dentists participated (10.7% of the total number of professionals). A high level of agreement was found with statements on the concepts of SB (94.7%) and awake bruxism (96.5%). The main strategy for the diagnosis was the combination of a parental report and a clinical examination (79.0%). Most participants indicated that bruxism is associated with anxiety/stress (96.5%), screen use (93%), airway obstruction (91.2%), and sleep apnoea (91.2%). In suspected cases of bruxism, the dentists would send the child for assessment by other health care providers (87.7%). The management options frequently indicated were the use of an occlusal splint, aromatherapy, and homeopathy. More than 70% of them considered themselves to be updated on the issue and sought information through scientific articles and discussions with colleagues.

Conclusion: Paediatric dentists have knowledge on the concept of bruxism and associated factors. However, further information is needed on the management of this condition in children.

Purpose: The present systematic review aims to summarize the current evidence regarding various treatment modalities and their results when dealing with hypersensitivity in teeth with Molar-Incisor Hypomineralization (MIH).

Methods: Systematic searches were conducted in PubMed and Scopus using the search terms "MIH AND Hypersensitivity AND treatment." Studies involving children aged 6-18 years diagnosed with MIH and exhibiting hypersensitivity were considered for inclusion. The outcomes examined included clinical, behavioral, and psychosocial treatment options for reducing hypersensitivity. A meta-analysis was performed for six of the included articles, and the I² value was calculated to determine heterogeneity.

Results: A total of eight articles met the inclusion criteria for this review, with six eligible for the meta-analysis. Various treatment modalities, such as dental mousse, sealing, laser therapy, and crown therapy, demonstrated significant reductions in hypersensitivity individually (p < 0.05).

Conclusion: The treatment methods that offer the most effective reduction in hypersensitivity are sealing with resin composite or glass ionomer cement for mild cases of MIH, while crown therapy is more effective for severe cases of MIH. However, the small number of participants and short follow-up times limit the strength of these conclusions.

Purpose: The aim of this study was to explore the potential to profile and distinguish varying clinical severity grades of MIH, compared to normal enamel, using proteomics.

Methods: Liquid chromatography-mass spectrometry analyses were conducted on enamel samples of extracted teeth, from 11 children and adolescents, spanning an age range of 6-18 years. Enamel powder samples were collected from extracted, third molars (n = 3) and first permanent molars diagnosed with MIH (n = 8). The MIH tooth samples were categorized into subgroups based on clinical severity grade. The data were statistically analyzed using ANOVA and Welch's t test.

Results: Teeth affected by MIH exhibited a diverse array of proteins, each with different functions related to dental enamel, distinguishing them from their normal enamel counterparts. The application of microdissection combined with LC-MS techniques has revealed the potential to discern unique proteomic profiles among MIH-affected teeth, characterized by varying clinical severity grades. Both analyzed MIH groups displayed consistent trends in the presentation of biological processes, including underabundance of proteins primarily associated with cell organization and biogenesis. Furthermore, proteins linked to cell death were overabundant in both MIH groups.

Conclusion: Proteomics enabled the detection and differentiation of various proteins across different clinical severity grades of MIH.

Purpose: The variations in interproximal contact areas have been categorised open (O), point (X), straight (I), and curved contact (S). This is based on their shapes and termed as OXIS classification. The interactive OXIS calibration website was developed to assist researchers seeking appropriate knowledge, minimise the overload of material, optimise efficiency in calibration and, to provide repositories for clinicians, healthcare workers, and policymakers.

Methods: The website was developed in two phases. The first phase of development included expert group discussion, Focus Group Discussion (FGD), and the implementation of FGD recommendations. The second phase emphasised registration and development of the interactive web portal on OXIS classification. The developed website was subjected to user experience testing, functional testing, performance testing, security testing, device, platform testing, and then hosted. Calibrated students and faculties evaluated it with the help of Suitability Assessment of Materials (SAM) and System Usability Scale (SUS). Finally, after amendments, the website was evaluated by non-calibrated researchers and multidisciplinary experts.

Results: The total agreement was 74% for overall SAM category. Pooled mean total score of SUS was 52.7 (SD 7.17; range 45-67.5), indicating an average score.

Conclusion: The content of the developed website has been evaluated as "satisfactory" and its technical quality as "of higher standards".

Purpose: Tooth eruption is a dynamic process. Appearance of any part of the cusp through gingiva may be a clinical marker of eruption. Early childhood caries (ECC) is a public health problem globally. This study aimed to assess the relationship between parent-reported timing of first tooth emergence and ECC in toddlers.

Methods: This study is a secondary data analysis of 627 toddlers involved in a case-control study on sleep-time feeding practises in children. The children were categorised into four groups based on the parent-reported timing of first primary tooth emergence (G1-when the first primary tooth emerged before 6 months of age, G2-between 7 and 9 months; G3-10 to 12 months and G4-when the first primary tooth emerged after 12 months of age). Univariate binary logistic regression analysis was performed to evaluate the association between timing of first tooth emergence and ECC.

Results: The mean age of the children was 24.4 ± 7.3 months (cases, that is children with ECC-25.4 ± 6.9 months, controls, that is children without ECC-23.6 ± 7.5 months). Of 60 children, whose first tooth erupted before 6 months of age, 35 (12%) were cases compared to 25(8%) controls. Amongst the cases, boys had more caries than girls (p < 0.05). Of the anterior teeth, 22% of the emerged teeth were decayed in the first group, followed by 19%, 16% and 10% in the second, third and fourth groups, respectively (p < 0.05). Analysis of the posterior teeth showed a lower percentage of decayed teeth with delayed emergence of the first primary tooth (p < 0.05). Children whose teeth emerged before 6 months of age had an odds ratio of 3.5 (95% CI 1.49, 8.42) (p = 0.004).

Conclusion: This study concluded that the early emergence of the first primary tooth, as reported by the parent, was associated with an increased risk of developing ECC.

Purpose: This study aimed to analyze, through a hierarchical model, the risk factors associated with the recurrence of chemo-induced oral mucositis (OM) in children and adolescents.

Methods: A retrospective cohort with 31 individuals of both sexes, aged 1-18 years, who were undergoing chemotherapy, and presented OM lesions was conducted. Data collection included analysis of medical records, interviews, and intraoral examination. Information regarding patients' socioeconomic and demographic profile, underlying disease, antineoplastic regimen, hematological condition, and oral health status were collected. To assess the association of independent variables with the outcome, the Chi-square, Fisher's Exact, and Mann-Whitney tests were used, in addition to a binary logistic regression model, with a maximum error of 5% and a 95% confidence interval.

Results: Significant associations were observed between the history of OM and the diagnosis of the child/adolescent, neutrophil count, previous cancer treatments and the chemotherapy scheme in use (p < 0.05). Binary logistic regression revealed a 13.69 higher risk of developing OM recurrence in individuals who received high-dose methotrexate (MTX) therapy.

Conclusion: Socioeconomic and demographic factors did not influence OM recurrence. However, clinical variables, such as neutropenia, diagnosis of leukemia, and high-dose MTX protocols increase the chance of OM new cases.