Arquivos em Odontologia

Times of Internationalization

Mauro Henrique Nogueira Guimarães de Abreu — 2024-02-22

In its 60th anniversary year, one of the oldest Brazilian scientific journals in Dentistry is undergoing a process of reinvention to fully realize its mission of promoting and disseminating intellectual production in the fields of health and education in Dentistry.

Interest of dental professionals and students in a mobile app for calculating dosages of medicines for use in pediatric dentistry

Mariana Ramos Coimbra — 2024-03-28

Aim: This study aimed to assess the interest of dental students, clinicians and professors in a mobile app for calculating dosages of medicines for use in Pediatric Dentistry.

Methods: The cross-sectional survey involved a random sample of undergraduate and postgraduate pediatric dental students, clinical pediatric dentists and professors. Initially, participants watched a video about an early version of the app. They then answered a questionnaire about their clinical experience, calculation routine, and interest in the app. Descriptive analyses were carried out.

Results: Of the 41 participants (20 students, 10 clinicians and 11 professors), 87.8% recognized the need to adjust doses of medicines used in pediatric dentistry, but only 56.1% felt confident in doing so. Almost a fifth of participants (19.5%) admitted errors in prescribing medicines for pediatric dental patients. After seeing the app’s functionalities, 92.7% considered it relevant, and 87.8% were interested in the full version.

Conclusion: The app is deemed relevant, necessary, and of significant interest to the target audience, indicating potential for investment and full development.

Tomographic prevalence of anatomical variations in the nasosinusal complex in patients with non-odontogenic sinusitis

Amanda Regina Fischborn — 2024-04-03

Aim: The aim of the study was to assess the prevalence of anatomical variations in the sinonasal complex using computed tomography (CT) in patients with non-odontogenic sinusitis.

Methods: This observational and retrospective study involved the analysis of 860 multislice CT scans prescribed for sinusitis evaluation. Non-odontogenic sinusitis was characterized by the presence of sinus mucosal thickening exceeding 2 millimeters and the absence of dental changes in the region. Subsequently, sinonasal complex variations were evaluated, and a descriptive analysis was conducted. Subsequently, 33 CT scans with non-odontogenic sinusopathy were analyzed, and the sinonasal complex was evaluated for the presence of the following anatomical variations: deviation of the nasal septum associated with a bony spur, bullous middle concha, unilateral hypoplasia of the maxillary sinus, among others.

Results: Anatomical variations were observed in 87.9% of cases, with 15 males (46.0%) and 18 female (54.0%), distributed among patients aged 41-60 years (45.5%). The most frequent anatomical variation was the bullous middle concha (37.9%), followed by septations in the maxillary sinus (10.3%) and enlarged frontal sinus (13.8%).

Conclusion: A considerable incidence of anatomical variations associated with non-odontogenic sinusitis was observed, with evidence of a bullous middle concha.

Epigenetic alterations associated with non-syndromic tooth agenesis

Maria Eduarda de Oliveira Almeida — 2024-04-03

Aim: To assess whether epigenetic alterations are associated with the occurrence of non-syndromic tooth agenesis.

Methods: Computerized searches were conducted in PubMed, Web of Science, Ovid, Embase, and Scopus databases. Grey literature searches (Open Grey), Google Scholar, and manual searches in the reference lists of included articles were also performed. Only case-control studies evaluating individuals with and without non-syndromic tooth agenesis were eligible. Study selection, data extraction, and bias assessment (University of Adelaide tool) were independently conducted by two authors. Due to methodological differences in the included articles, a meta-analysis was not feasible.

Results: This study identified 206 articles in the databases. After removing 128 duplicates and reviewing 78 references, eight articles met the eligibility criteria and were included. The included studies were conducted in China, Turkey, Tunisia, Romania, and the Czech Republic. Publication dates ranged from 2015 to 2023. Studies with the smallest sample assessed five individuals with agenesis and five without agenesis, and the study with the largest sample assessed 625 individuals with agenesis and 1,144 without agenesis. In total, this review analyzed 1,325 individuals with agenesis and 1,867 without agenesis. Of the 33 single nucleotide polymorphisms evaluated, 19 were potentially associated with an increased susceptibility to non-syndromic tooth agenesis, and these were identified in the PAX9, AXIN2, WNT10A, MDM2, MSX1, and BMP2 genes. Twenty-nine new mutations were identified. Overall, the included articles demonstrated a low risk of bias.

Conclusion: There is an association between certain epigenetic alterations and the occurrence of non-syndromic tooth agenesis.

Odontometry in mandibular molars

Barbara Quadros Tonelli — 2024-04-03

Objective: To compare conventional and digital radiographic methods in Odontometry of lower molars.

Materials and Methods: Twenty-six teeth were selected and inserted into containers with plaster and sawdust to simulate the alveolar bone. After adequate endodontic access, K#15 files were positioned in the mesiobuccal and distal canals, 1 mm below the foraminal patency (CT1). A resin device was constructed, where an angle gauge was fixed, standardizing the horizontal angulation at 20º distally. The vertical angle was 0º with a focus-film distance of 30 cm. An Rx device of 70 KVp and 8 mA, with an exposure time of 0.4 seconds, was used. To obtain the radiographic CT (CT2), the caliper was positioned on the lower edge of the cursor up to the tip of the file. The same measurements were performed on digital radiographs, obtained with a CMOS sensor. The “ruler” tool was used to determine the digital CT (CT3). The Intra-Class Correlation test was used to verify intra-group and intergroup agreements, and the Anova One-way and Tukey tests (α = 0.05) were used for comparative analysis between CT1, CT2, and CT3.

Results: Both conventional and digital measurements had excellent intra-group agreement (0.9842 and 0.9943, respectively). The agreement between measurements for digital CT was greater in relation to real measurements (0.8162) than conventional CT measurements (0.6761). The mean and standard deviation for CT1, CT2, and CT3 were 18.4±1.4; 19.2±1.6; and 18.8±1.2, respectively. The Tukey test indicated a statistical difference between CT1 and CT2 (p = 0.027); Between CT1 and CT3 (p = 0.499) and between CT2 and CT3 (p = 0.314) no significant differences were observed.

Conclusion: Digital radiographs provided greater precision in the odontometry of lower molars according to the experimental conditions evaluated in this study.

Impact of COVID-19 on dental procedures in the Unified Health System in Manhuaçu

Patrícia Vitor de Souza — 2024-04-09

Aim: To analyze the impact of the COVID-19 pandemic on dental care in Manhuaçu, MG.

Methods: Secondary data were extracted from the Sidim database of Public Health. The procedures performed by dentists before and during the pandemic were collected. A descriptive analysis was performed (percentages and averages).

Results: A decrease in emergency procedures and routine care of approximately 19% and 85%, respectively, was found. Before the pandemic, the average number of procedures performed on a daily basis was around 103.4 dental specialties and 97.4 periodontal procedures. However, during the pandemic, the most performed procedures were rapid testing for SARS-COVID-2 detection, temperature measurement, and blood pressure, followed by dental and endodontic procedures. A maximum decline in procedures was observed in public health specialties (100%), periodontics (97%), and dentistry (95%).

Conclusion: COVID-19 had a significant impact on the dental care and preventive and curative procedures in the public health system of Manhuaçu.

Antimicrobial effect of resveratrol on an etiological agent of human dental caries, Streptococcus mutans

Débora Rafaella Mendes dos Santos — 2024-04-12

Aim: To evaluate the antimicrobial effect of resveratrol on the bacterium S. mutans.

Methods: In the execution of the study, samples were cultured on petri dishes plated with Mueller-Hinton Agar, containing sterile 6 mm diameter Blank discs (Cecton). The discs were soaked with 10 μl of negative control (phosphate-buffered saline - PBS), positive control (0.12% chlorhexidine), and different concentrations of resveratrol (100 μg/mL, 200 μg/mL, 400 μg/mL, and 800 μg/mL). The tests were performed in triplicate, totaling 18 analyses.

Results: After 24 hours of incubation, the halos were evaluated and measured using a digital caliper. The data collected were processed statistically using the Anova way program. The diameter measurement for the positive control halo was 2.84 cm; for the resveratrol at 800 μg/mL, it was 0.6 cm; at 400 μg/mL, it was 0.42 cm; and at 200 and 100 μg/mL, it was zero.

Conclusion: Resveratrol did not demonstrate efficiency against the bacteria when compared to the negative control (PBS). According to literature, resveratrol produces an antibacterial activity, although its optimal concentration for inhibitory effect is not yet well established.