Shape differences among symmetrically shaped skeletal growth patterns in a panoramic view: a Fourier analysis
The objective of this study was to apply elliptic Fourier analysis (EFA) to find shape differences among skeletal growth patterns in both radiographic and tomographic panoramic views, controlling for asymmetry. Lateral and panoramic images were obtained from 350 patients. After screening patients with asymmetric linear and angular values and natural asymmetric hemimandibular shape, 240 patients were included in the study: 48 with tomographic information and 192 with radiographic information. The images were classified according to the mandibular plane angle and the ANB angle. Mandibular contours were digitized on the panor...
Source: Brazilian Oral Research - March 15, 2021 Category: Dentistry Source Type: research
Chronic inflammatory periapical diseases: a Brazilian multicenter study of 10,381 cases and literature review
Abstract The aim of this study was to investigate the epidemiological and clinical characteristics of chronic inflammatory periapical diseases in different regions of Brazil and to compare with data from the literature. A multicenter study was carried out in four Brazilian referral centers in oral diagnosis. Histopathological records were reviewed, and all cases diagnosed microscopically as periapical granuloma, radicular cyst, and periapical abscess were included. Demographic and clinical data were collected. Descriptive statistics and Pearson ’ s chi-square test were performed. A total of 10,381 cases of chronic inflam...
Source: Brazilian Oral Research - March 15, 2021 Category: Dentistry Source Type: research
Effect of antihistamine-containing syrup on salivary metabolites: an in vitro and in vivo study
This study tested the null hypothesis that antihistamine-containing syrup does not change salivary metabolites in vitro and in vivo. For the in vitro experiments, saliva from 10 volunteers was mixed with a syrup or pill suspension of loratadine (1 mg/ml Claritin ®, Schering-Plough, Rio de Janeiro, Brazil). For the in vivo experiment, 10 volunteers performed a mouth rinse with 10 mL of antihistamine syrup (Claritin®; Schering-Plough, Rio de Janeiro, Brazil) for 20 seconds and then discarded the rinse water. After 20 seconds, 5 mL of unstimulated whole sali va was spit into a plastic tube kept on ice. The protein profile o...
Source: Brazilian Oral Research - March 15, 2021 Category: Dentistry Source Type: research
Socioeconomic and intraoral polarization of untreated caries and tooth loss among male adolescents
In conclusion, the occurrence of untreated dental caries and tooth loss was concentrated in the first molars of adolescents. Moreover, the prevalence of both conditions was higher among adolescents with low schooling and whose mothers had low schooling, reflecting the strong intraoral and socioeconomic polarization of these outcomes. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - March 15, 2021 Category: Dentistry Source Type: research
Prosthodontic practice during the COVID-19 pandemic: prevention and implications
The objective of this review is to identify preventive measures for COVID-19 to safeguard dental professionals providing prosthodontic dental care. Electronic searches were performed in PubMed, Scopus, and Cochrane databases using the following descriptors and/or words: “ COVID-19, ” “ SARS-CoV-2, ” “ Dental practice, ” “ Prosthodontics, ” and “ Dental infection control. ” Prosthodontists are at high risk for exposure to the novel coronavirus through aerosols and possibly contaminated surfaces and indirect contact with dental laboratories and dental technicians through impressions, dental stone casts,...
Source: Brazilian Oral Research - March 12, 2021 Category: Dentistry Source Type: research
Potential link between SARS-CoV-2 and Kawasaki disease: importance of dentists for the diagnosis
Abstract: Kawasaki disease (KD) is a vasculitis with predilection for coronary arteries. Due to a lack of reliable confirmatory laboratory tests, the diagnosis of KD is based on a characteristic pattern of clinical findings that appear in a typical temporal sequence. The diagnostic criteria have been periodically modified and the American Heart Association has proposed the most recent guidelines for its diagnosis. However, patients may have incomplete or atypical forms of KD and diagnosis can often be difficult. Because oropharyngeal manifestations are a common and important feature for diagnosing KD and recent studies hav...
Source: Brazilian Oral Research - March 12, 2021 Category: Dentistry Source Type: research
Streamlining the dental care during COVID-19 pandemic: updated clinical recommendations and infection control management framework
Abstract: Several guidelines for dental practice have been published by dental associations and regulatory boards since the beginning of the pandemic. Initially, all non-emergency dental treatment were suspended. Healthcare personnel around the world are gradually expanding back to elective procedures. International updated recommendations alert that professionals must maintain regular observation of local health department reports, ensure personal protective equipment, and screen all patients for COVID-19 signs and symptoms. Telehealth strategies, patient screening, rescheduling when presenting COVID-19 symptoms and/or hi...
Source: Brazilian Oral Research - March 12, 2021 Category: Dentistry Source Type: research
Knowledge, stress levels, and clinical practice modifications of Turkish dentists due to COVID-19: a survey study
This study included a total of 1,095 Turkish dentists. The data were expressed as frequency with percentage values for overall variables. Dentists were most familiar with high fever among the symptoms of COVID-19 (99.4%) and 99.2% of them reported that COVID-19 was transmitted with eye, mouth and nasal mucosa contact on surfaces contaminated with the droplets of infected persons. While the stress levels of females were higher than males, the stress levels of dentists with more than 20 years of professional experience were found to be lower. Regarding the precautions to be taken as a preventive measure when working again, 8...
Source: Brazilian Oral Research - March 12, 2021 Category: Dentistry Source Type: research
Biological and mechanical characterization of commercial and experimental periodontal surgical dressings
The objective of this study was to evaluate the biocompatibility and mechanical properties of two commercially available and one experimental periodontal dressing materials. The cytotoxicity of Periobond ® , Barricaid ® and one experimental periodontal dressing based on Exothane ® 8 monomer was tested on 3T3/NIH mouse fibroblast. Genotoxicity was assessed by micronuclei formation, and cell alterations were analyzed using light microscopy. Both biological assays were performed using the eluate obt ained from specimens after 24, 72, or 168 hours of incubation. Mechanical characterization was assessed through the ultimate ...
Source: Brazilian Oral Research - March 3, 2021 Category: Dentistry Source Type: research
Presence of molar-incisor hypomineralization is associated with dental caries in Brazilian schoolchildren
This study aimed to identify the prevalence of molar-incisor hypomineralization (MIH) in schoolchildren and its association with dental caries experience. This was a cross-sectional study with a sample of 471 children aged 8 to 10 years. Data were collected via a sociodemographic questionnaire. Intra-oral clinical examination was done to identify and diagnose MIH (EAPD Criteria) as well as dental caries (ICDAS Index). Statistical analyses were performed with Person ’ s Chi-square, Fisher ’ s exact, and Mann-Whitney tests, and Poisson regression models were built. Statistical significance was set at an alpha-level of 0....
Source: Brazilian Oral Research - March 2, 2021 Category: Dentistry Source Type: research
Cone-beam computed tomography cinematic rendering: clinical, teaching and research applications
Abstract Cone-beam computed tomography (CBCT) is an essential imaging method that increases the accuracy of diagnoses, planning and follow-up of endodontic complex cases. Image postprocessing and subsequent visualization relies on software for three-dimensional navigation, and application of indexation tools to provide clinically useful information according to a set of volumetric data. Image postprocessing has a crucial impact on diagnostic quality and various techniques have been employed on computed tomography (CT) and magnetic resonance imaging (MRI) data sets. These include: multiplanar reformations (MPR), maximum int...
Source: Brazilian Oral Research - February 22, 2021 Category: Dentistry Source Type: research
Incidence of condylar resorption after bimaxillary, Lefort I, and mandibular surgery: an overview
Abstract The aim of the present overview was to evaluate the outcomes of systematic reviews to determine the incidence of condylar resorption in patients submitted to orthognathic surgery and analyze whether the risk of developing this condition is related to a specific type of surgery. Searches were conducted in the PubMed/MEDLINE, Embase, and Cochrane electronic databases for systematic reviews with quantitative data on condylar resorption due to any type of orthognathic surgery for dentoskeletal deformities published up to May 25, 2019. The AMSTAR 2 and Glenny tools were applied for the quality appraisal. Five systemati...
Source: Brazilian Oral Research - February 12, 2021 Category: Dentistry Source Type: research
Influence of Er,Cr:YSGG laser on root dentin submitted to erosive and/or abrasive challenges
This study evaluated how Er,Cr:YSGG laser, associated or not with 5% fluoride varnish, influences the surface roughness and volume loss of bovine root dentin submitted to erosive and/or abrasive wear. One hundred and twenty dentin specimens were divided into the groups: without preventive treatment (WPT), 5% fluoride varnish (FV); Er,Cr:YSGG laser irradiation (L), and varnish combined with laser (FV + L). The specimens (n = 10) were subdivided into: 1 = erosion (E); 2 = abrasion (A); and 3 = erosion followed by abrasion (E + A). The erosive solution used was a soft-drink (pH = 2.42 at 4 ºC) applied in 5-min cycles twice a...
Source: Brazilian Oral Research - February 12, 2021 Category: Dentistry Source Type: research
Effect of obturation technique using a new bioceramic sealer on the presence of voids in flattened root canals
Abstract The aim of this study was to evaluate the filling ability of a new ready-to-use calcium silicate-based sealer using thermoplastic or single-cone technique in flattened root canals. Twenty-four flattened distal canals of mandibular molars with a buccolingual diameter 4 or more times larger than the mesiodistal diameter were selected. The root canals were prepared and filled (n = 12), according to the following techniques: thermoplastic or single-cone technique using Bio-C Sealer. The teeth were scanned using Skycan 1176 micro-computed tomography (micro-CT) - voxel size 8.74 µm, before and after filling the root ca...
Source: Brazilian Oral Research - February 12, 2021 Category: Dentistry Source Type: research
Efficacy of audiovisual distraction using eyeglasses during dental care: a randomized clinical trial
Abstract This randomized parallel-group control trial tested the efficacy of distraction using audiovisual eyeglasses (AVE) during dental procedures [NCT03902158]. Forty-four 6 – 9 year-old children with low/moderate anxiety and who needed restorative treatment or exodontia of the primary molars were randomly allocated into two groups: the AVE (experimental) and the conventional behavior management techniques (control) groups. Motion sensors were used to measure the participants ’ body movements. Dental visits were video recorded, and their pain levels and behavior were assessed using the Faces, Legs, Activity, Cry, a...
Source: Brazilian Oral Research - February 12, 2021 Category: Dentistry Source Type: research
