Brazilian oral research最新文献

Preventive maintenance in pediatric dentistry is essential for monitoring oral health and promoting healthy habits. This study aimed to evaluate how the frequency of follow-up appointments, as well as sex- and age-related differences, impact the probability of referral for curative treatment among pediatric dentistry patients at a Brazilian dental school. This retrospective longitudinal study included dental records of patients who had their first appointment between the second half of 2013 and the second half of 2019, completed treatment, and returned for at least one check-up visit. Descriptive and survival analyses were performed. A total of 296 dental records were evaluated, comprising 47.6% female and 52.4% male patients. The likelihood of referral to curative treatment increased with longer follow-up intervals, reaching 18.9% at six months and 82.7% at 48 months. Patients aged 9 years or younger were 2.07 times more likely to be referred to curative treatment than those aged 10 years or older. No significant difference was observed in referral probability between boys and girls. Longer intervals between check-up visits increased the likelihood of referral to curative treatment, which was higher among older children. Establishing personalized follow-up intervals based on individual patient needs is crucial for maintaining oral health.

The objective of this study was to estimate the prevalence of comorbidities among people living with HIV/AIDS (PLWHIV) attending a dental outpatient clinic and discuss the impact of these comorbidities on dental management. A cross-sectional observational study evaluated 238 PLWHIV attending a specialized dental outpatient clinic in Brazil. We collected sociodemographic data, self-reported and physician-diagnosed comorbidities, hemogram results, CD4+ T cell count, viral load, use of combined antiretroviral therapy (cART), and information on harmful habits. The most prevalent comorbidities were sexually transmitted infections (STIs) (116/238; 48.7%), psychiatric disorders (105/238; 44.1%), and lipodystrophy (97/238; 40.8%). Men were more likely to have STIs (OR 4.0) and tuberculosis (OR: 2.5) (p < 0.05). Age ≥ 50 years increased the risk of diabetes mellitus by 2.6 times (p < 0.05). The risk of lipodystrophy (OR: 2.99, 95%CI 1.44-6.19) and psychiatric disorders (OR: 2.13, 95%CI 1.01-4.47) was greater in those who had been diagnosed with HIV for more than 20 years. In summary, psychiatric disorders and severe hematological alterations, such as anemia and neutropenia, are significant comorbidities that may limit dental treatment of HIV-positive patients. These findings underscore the need for integrated medical and dental care to address the complex health needs of PLWHIV.

The iVAC system combines ultrasonic activation with negative-pressure irrigation, highlighting the importance of determining its vibration characteristics. This study aimed to evaluate the oscillation characteristics of the iVAC system using laser Doppler vibrometry and to compare them with those of metallic inserts used for ultrasonic irrigation. Four ultrasonic inserts-Irrisonic, Nitisonic, Ultra X Blue, and iVAC-were attached to an ultrasonic unit, secured in a holder, and operated at a power setting of 15%. A laser scanning vibrometer was used to scan the first four millimeters of each insert. Each measurement, lasting approximately 20 seconds, was repeated ten times per insert and performed at millimeter intervals. Displacement amplitude and frequency data were recorded for each insert. Furthermore, scanning electron microscopy was employed to evaluate the surface finish of the inserts, and their elemental compositions were analyzed using energy-dispersive X-ray spectroscopy (EDS). Analysis of variance and Tukey's test were conducted to compare the performance of the inserts. The displacement amplitudes showed significant differences between inserts and among the scanned points (p < 0.05). All inserts demonstrated ultrasonic vibration frequencies exceeding 20 kHz. EDS analysis revealed that the elemental composition of the E1-Irrisonic tips was consistent with stainless steel. In contrast, the Nitisonic insert displayed a chemical composition characteristic of an equiatomic nickel-titanium (NiTi) alloy, whereas the Ultra X Blue insert contained additional elements beyond NiTi. The characteristics and composition of ultrasonic inserts significantly influence their displacement amplitude and vibration frequency. At the tested activation power, the iVAC insert, made of the organic thermoplastic polymer polyether ether ketone (PEEK), demonstrated an ultrasonic vibration pattern but exhibited the lowest oscillation amplitude among the inserts.

Objectively evaluating an individual's capacity for food fragmentation (masticatory performance) is crucial for understanding oral physiology and dental rehabilitation processes. Our aim was to conduct a bibliometric analysis of the literature focusing on masticatory performance. We conducted a survey in Web of Science up to August 31, 2024, applying specific category filters. Two calibrated reviewers manually tabulated the data, extracting information on title, authorship, keywords, institutions, countries, number of citations, year of publication, journal title, study design, masticatory test, population, and dentition status. VosViewer software generated collaborative network maps, while JAMOVI was used to perform ANOVA and Poisson regression analyses. The selection process resulted in 814 articles published between 1950 and 2024, with a recent increase to at least 50 articles per year. The average impact factor was 3.16, with around 30 citations per article. Citations were significantly influenced by the masticatory performance technique, publication year, and journal impact factor. The comminution test was the most prevalent (n = 411). Most studies focused on adults (n = 420) and older adults (n = 361), in which natural dentition (n = 404) and complete dentures (n = 214) were the most widely assessed parameters. The most frequent study designs were cross-sectional (n=489) and prospective (n = 145). The leading countries were Japan (n=202), Brazil (n=134), and the Netherlands (n = 69), and the Journal of Oral Rehabilitation was the most recurrent journal (n = 162). This study highlights the growing interest in evaluating masticatory performance, with a significant increase in publications over the years. This study highlights the need for further research involving children and longitudinal study designs, as well as studies evaluating rehabilitations with removable partial denture and implant-supported prostheses.

Data were collected by trained interviewers at primary healthcare units and hospitals during pregnancy and childbirth, and by trained dentists when the children were 4 years old. A total of 3,644 mothers and 3,645 babies were included in the study, which evaluated the association between systemic diseases, maternal physical activity, weight gain during pregnancy, and the oral health of four-year-old children enrolled in the 2015 Pelotas Birth Cohort (Brazil). Exposure variables included systemic diseases, maternal physical activity, and gestational weight gain. Outcome variables were dental caries and caries experience in four-year-old children, assessed using the ICDAS index. Statistical analyses were performed using the Stata 15 software, and they included Pearson's chi-square test and Poisson regression to estimate prevalence ratios and their respective 95% confidence intervals. Excessive weight gain during pregnancy was associated with a higher risk of dental caries in children (PR: 1.12; 95%CI: 1.01-1.23). Maternal physical activity before or during pregnancy was considered a protective effect against dental caries in the unadjusted analysis ([RP: 0.82; 95%CI: 0.71-0.93] [RP: 0.60; 95%CI 0.44-0.81]), respectively, but this association was no longer significant after adjusting for confounding factors. The presence of maternal systemic diseases during pregnancy was not associated with childhood caries. In conclusion, maternal systemic diseases during pregnancy were not associated with dental caries in children. On the other hand, an excessive increase in maternal weight during pregnancy was associated with poorer oral health among children.

In this study, citations, altmetric scores, and field-normalized impact of articles investigating resin-based adhesives, luting agents, or restorative composites were investigated. Articles published in 2019 on resin-based dental materials indexed in Scopus were searched and assessed by independent investigators. Data collected in 2023 included several article variables and, as outcomes, citation in Scopus and Google Scholar, Altmetric Attention Scores (AAS), and Field-Weighted Citation Impact (FWCI). Data were analyzed using stepwise backward quasi-Poisson regression models (p < 0.05). A total of 707 articles were included, which evaluated restorative composites (58.3%), adhesives (27.2%), and luting agents (19.5%). The majority of corresponding authors were from Asia/Oceania (42.2%), with publications mainly subscription-based (54%) and lacking international collaboration (68.5%). Only 1.4% reported conflicts of interest, and 47.7% did not disclose sponsorship. Median citations were 7 in Scopus and 13 in Google Scholar, whereas the median FWCI was 1. The majority of articles had an AAS of zero. Multivariate analysis showed study sponsorship type and journal CiteScore influenced citations, while COI and the author's continent impacted AAS and FWCI, respectively. Articles on luting agents were less likely to receive citations. The report of conflict of interest was associated with approximately 18 times higher AAS values. This study emphasizes the significance of the type of resin-based material, journal CiteScore, authors' continent, and type of sponsorship in affecting citations, visibility, and impact of scientific articles. Research on luting agents may need better dissemination strategies for increased visibility. The substantial effect of COI presence underscores the importance of transparency.

Ultrasonic activation of the endodontic sealer makes it difficult to remove the material during endodontic reintervention. Therefore, supplementary removal protocols should be tested to optimize the removal of the remaining filling material. This study assessed the effectiveness of supplementary protocols for filling material removal after sealer ultrasonic activation (UA). Sixty teeth were prepared and distributed into two groups: UA and No UA of the sealer before obturation. Teeth were re-instrumented and two supplementary removal protocols were tested, resulting in six groups (n = 10): NoUA; NoUA+XP (XP-endo Finisher); NoUA+CS (Clearsonic-R1); UA; UA+XP; and UA+CS. Root canals were analyzed under stereomicroscopy and scanning electron microscopy for quantification of the remaining filling material. Considering the total root canal area, the NoUA+CS group had the lowest remaining filling material compared to NoUA+XP, UA+XP and UA+CS groups (p < 0.05). When the root thirds were compared, there was no statistical difference among groups (p > 0.05). The XP-endo Finisher instrument demonstrated the lowest effectiveness when used as a supplementary step. In contrast, the Clearsonic-R1 insert exhibited the highest performance.

This study aimed to establish the frequency of oral mucosal conditions and xerostomia, identify a possible association between them, and verify their associated factors from a sample of the population of Três Corações, Brazil. A cross-sectional study was conducted with volunteers without age restriction. To evaluate the presence of oral mucosal conditions, an intra-oral examination was performed and a clinical diagnosis was established based on the official classifications of oral diseases. The report of xerostomia was identified by a validated questionnaire completed during anamnesis. Descriptive and association statistics were performed using a significance level of 5%. A total of 1,052 volunteers were evaluated. Oral mucosal lesions were observed in 42.11%, variations of normal structures in 38.50%, and xerostomia in 60.64%. Women were more affected than men, particularly women aged 20-49. Xerostomia was not found to be associated to oral mucosal conditions in general (p > 0.05); however, inflammatory fibrous hyperplasia (27.99%) and oral candidiasis (24.38%), the most prevalent lesions in the study, were associated with xerostomia (p < 0.001 and p = 0.006, respectively) and denture use (p = 0.025 and p < 0.001, respectively). Use of tobacco and alcohol intake were not associated with the presence of oral lesions (p = 0.319 and p = 0.739, respectively). The findings of this study are important for determining the prevalence of oral conditions and xerostomia in the general population, serving as a baseline for further investigations into the association between xerostomia, inflammatory fibrous hyperplasia, and oral candidiasis.

The aim was to evaluate the association between dental development (dental maturity) and genetic polymorphisms in PTH and genes involved in vitamin D synthesis in a cohort of Brazilian children. This retrospective cross-sectional study was performed on children receiving orthodontic treatment. Patients who had already undergone orthodontic treatment previously, those with syndromes, congenital anomalies, craniofacial deformities, and those with a previous history of dental trauma and bilateral agenesis/missing tooth/teeth were excluded. Panoramic radiographs were used for dental age evaluation according to the method proposed by Demirjian, Goldstein, and Tanner (1976). A delta [dental age minus chronological age (DA-CA)] was calculated to determine whether the patient's dental age was normal, delayed (negative values), or advanced (positive values). DNA isolated from buccal cells was used for genotyping genetic polymorphisms in PTH (rs694, rs307247, and rs6256), VDR (rs7975232), CYP27B1 (rs464653), and CYP24A1 (rs927650). A statistical analysis was performed and p<0.05 indicated statistical difference. A total of 79 orthodontic patients were included (44 (55.70%) girls and 35 (44.30%) boys). Demirjian, Goldstein, and Tanner's method (1976) overestimated the age of patients by 0.75 years. None of the genetic polymorphisms were associated with dental age (p>0.05). In conclusion, there is no association between genetic polymorphisms in PTH and genes involved in vitamin D synthesis and dental maturity.

[This corrects the article doi: 10.1590/1807-3107bor-2025.vol39.018].