YouTube™ as a source of tooth avulsion information: A video analysis study

BACKGROUND/AIM

Evaluate the informative content in tooth avulsion videos intended for dentists available on YouTube™ and analyse their compliance with the International Association of Dental Traumatology (IADT) guidelines 2020.

MATERIALS AND METHODS

Google Trends was used to identify the most searched term for tooth avulsion. Tooth avulsion-related videos in Brazilian Portuguese intended for dentists were searched on YouTube™ with a 12-month filter. Two raters reviewed these videos to extract their features and evaluate and qualify them with two 9-point checklists based on the IADT 2020 guidelines. The emergency steps for tooth avulsion at the accident site were assessed before, during and after clinical management; each step received 1 point if present and 0 points if absent. The final score ranged from 0 to 9 points on each checklist (18 points total), and the total score was used to classify the videos as having poor, moderate or rich content. Reliability and video quality were evaluated by an adapted version of the DISCERN tool and global quality scale (GQS), respectively. The data were analysed with the Mann-Whitney U-test, Pearson chi-square test, and the Kappa statistic (p < .05).

RESULTS

Of 60 videos, 8 were included. All were uploaded by dental professionals or undergraduate students; the average duration was 11 min (range: 0.40-65 min), and the average number of views was 56.75. Half the videos (50%) had maximum completeness scores for questions about emergency dentist referral before clinical management, and more than half (75%) had maximum completeness regarding the steps required during and after treatment. Rich videos had higher GQS scores (p = .049) without significant correlation.

CONCLUSIONS

Although most videos in Brazilian Portuguese were considered high-quality according to the IADT checklist, half of them presented partial absence of information regarding orientations at the accident site.

Efficacy of treatments used to relieve signs and symptoms associated with teething: a systematic review

The purpose of this review was to systematically evaluate all the existing literature on the efficacy of treatments used to relieve the signs and symptoms associated with teething. A systematic search up to February 2021, without restrictions on language or date of publication, was carried out in MEDLINE/PubMed, SCOPUS, Web of Science, The Cochrane Library, EMBASE, LILACS, BBO, OpenGrey, Google Scholar, Portal de Periódicos da CAPES, clinicaltrials.gov, and the references of the included studies. Clinical studies that evaluated the effect of any intervention to alleviate the signs and symptoms associated with teething in babies and children were included. The risk of bias was assessed using the ROB-2 and ROBINS-I tools. The characteristics and results of the individual studies were extracted and synthesized narratively. The GRADE approach was followed to rate the certainty of the evidence. Three randomized and two non-randomized clinical trials were included. The outcomes of these five articles were classified as high or serious risk of bias. Three studies using homeopathy reported improvement in appetite disorders, gum discomfort, and excess salivation. One study showed a new gel with hyaluronic acid was more effective than an anesthetic gel in improving signs and symptoms such as pain, gingival redness, and poor sleep quality. Another study applied non-pharmacological treatments, which were more effective, especially against excess salivation. Although the present systematic review suggests some therapies could have a favorable effect on signs and symptoms related to teething, definitive conclusions on their efficacy cannot be drawn because of the very low certainty of the evidence. The existing literature on the subject is scarce and heterogeneous and has methodological flaws; therefore, further high-quality investigations are necessary.

Critical appraisal of the information available on traumatic dental injuries found in applications

BACKGROUND/AIMS

Traumatic dental injuries (TDI) are a public health problem and the search for information becomes essential to help in their management. The aim of this study was to search existing TDI applications (Apps) to critically describe the characteristics and main information found in them regarding TDI.

METHODOLOGY

Searches were performed in the Play Store (Android) and App Store (iOS), using MeSH terms, synonyms and terms related to dental emergencies and TDI, in English, Spanish and Portuguese. Apps with information on the management of post-TDI emergencies or TDI prevention were included. The type of operating system (Android/iOS), cost (free/paid), target audience (dentist/patient), age of classification (free/>17 years old), language, star rating (1★ to 5★), number of downloads and post-download ratings, type of dentition (primary/permanent), reference used for classification according to TDI type and management (International Association for Dental Traumatology/Andreasen/others/not reported), and available content (prevention/emergency management/preservation/illustrations) were evaluated.

RESULTS

Among 486 apps, 13 were eligible: 11 for Android and 2 for iOS. Most were free (92.3%), for patients (38.4%) and had a free age classification (90.9%). The main language was English (53.8%), and most of the Apps either had no information on star ratings (46.1%) or received 4★ (23.1%). The number of downloads was not reported (23.1%) or was fewer than 100 (23.1%). Most of the Apps were for permanent teeth (61.5%) and had explanations about dental management for TDI emergencies (92.3%) and multiple TDIs (61.5%). Most Apps addressed the importance of monitoring TDIs (76.9%) and contained illustrative images (76.9%). However, many did not report the TDI classification (46.1%), and 38.5% reported TDI prevention.

CONCLUSIONS

Information on dental trauma management according to dental injury, inclusion of images, target audience, type of TDI and their prevention varied in the available Apps. However, most were focused on permanent teeth and addressed several TDI in English language only.

Oral status, sense of coherence, religious-spiritual coping, socio-economic characteristics, and quality of life in young patients

BACKGROUND

Several factors can influence the oral health.

AIM

To explore the clinical factors, individual characteristics, and environmental factors (religious-spiritual coping-RSC, sense of coherence [SOC], and socio-economic status) related to oral status and impact on oral health-related quality of life (OHRQoL) of children/adolescents (C/A).

DESIGN

This study evaluated C/A up to 15 years old and their caregivers. Number of decayed (NDT) and missing teeth (NMT); history of dental trauma; caregiver's RSC and SOC, socio-economic factors, and OHRQoL were evaluated. Theoretical model exploring the direct and indirect effects was tested using a structural equation analysis.

RESULTS

For younger group (0-6 years), having more NDT or more NMT had a greater impact on the OHRQoL (β = 0.382, β = 0.203, respectively). In the oldest group (7-15 years), a higher SOC had an inverse relationship with the impact on the family OHRQoL (β=-0.201). The higher the age of the C/A, the lower the NDT (β=-0.235), and the higher the family income the lower, the need for social benefit (β = 0.275). Indirect relationships were observed between schooling with social benefit and OHRQoL in younger group. The family income indirectly influenced the OHRQoL in oldest group.

CONCLUSIONS

Quality of life is affected directly and indirectly by environmental characteristics, oral status, and the age of patients.

Effect of cosmetic matrices on the release and odour profiles of the supercritical CO2 extract of Origanum majorana L

OBJECTIVE

In this study, the effect of different cosmetic matrices on the release profile and odour intensity of the fragrance O. majorana was investigated for the first time.

METHODS

The fragrance compounds of O. majorana were extracted by supercritical fluid extraction using carbon dioxide (SFE-CO2 ) at 40°C and two operating pressures (8.5 and 10 MPa), and their chemical profiles were assessed by gas chromatography with flame ionization detector coupled with mass spectrometry (GC-FID/MS). Lastly, the fragrance compounds were incorporated into three cosmetic matrices (glycerine, dipropylene glycol and skin lotion) to assess their release and odour profiles over time using dynamic headspace (DHS)/GC-FID/MS and Odour Value concept, respectively.

RESULTS

The SFE-CO2 enabled recovering extracts with the pleasant scent of the living plant, and the increment of pressure induced an increase on the extraction yield. GC-FID/MS analyses revealed that oxygen-containing monoterpenes was the principal group of components identified in both SFE-CO2 extracts. The fragrance compounds were more retained in dipropylene glycol, and the major deviations from the original odour intensity (control) were observed in the presence of dipropylene glycol and skin lotion.

CONCLUSION

The hydrophilic character of the cosmetic matrices strongly influenced the release of the fragrance compounds, thus affecting the odour profile of the studied mixtures.

Optimisation of reactive dye degradation by laccase using Box-Behnken design

A three-level Box-Behnken factorial design with three factors and the Response Surface Methodology were used to optimise the colour removal of the reactive textile dye, Colour Index (C.I.) reactive red 180, by commercial laccase. A mathematical model was developed to study the effect of temperature, pH, enzyme concentration and their interactions on the decolourisation. Enzyme concentration and pH as well as their interaction were the principal factors that affected the decolourisation. The dye degradation was independent of temperature. The model estimated that the highest decolourisation (> 92%) was obtained for 27 degrees C, pH 7.5 and 85 U l(-1). This predicted value was experimentally validated, obtaining dye colour removal (540 nm) of 93 +/- 1.5%.

Natural waste materials containing chitin as adsorbents for textile dyestuffs: batch and continuous studies

In this work three natural waste materials containing chitin were used as adsorbents for textile dyestuffs, namely the Anodonta (Anodonta cygnea) shell, the Sepia (Sepia officinalis) and the Squid (Loligo vulgaris) pens. The selected dyestuffs were the Cibacron green T3G-E (CI reactive green 12), and the Solophenyl green BLE 155% (CI direct green 26), both from CIBA, commonly used in cellulosic fibres dyeing, the most used fibres in the textile industry. Batch equilibrium studies showed that the materials' adsorption capacities increase after a simple and inexpensive chemical treatment, which increases their porosity and chitin relative content. Kinetic studies suggested the existence of a high internal resistance in both systems. Fixed bed column experiments performed showed an improvement in adsorbents' behaviour after chemical treatment. However, in the column experiments, the biodegradation was the main mechanism of dyestuff removal, allowing the materials' bioregeneration. The adsorption was strongly reduced by the pore clogging effect of the biomass. The deproteinised Squid pen (grain size 0.500-1.41 mm) is the adsorbent with highest adsorption capacity (0.27 and 0.037 g/g, respectively, for the reactive and direct dyestuffs, at 20 degrees C), followed by the demineralised Sepia pen and Anodonta shell, behaving like pure chitin in all experiments, but showing inferior performances than the granular activated carbon tested in the column experiments.

Complexing capsules--metal extraction and modeling of ion transfer

Polyamide complexing capsules containing a poly(acrylic acid) gel are synthesized by a two steps polymerization process with various diameters (10 microm for microcaps or 200 microm for mcaps). A cationic exchange between gel carboxylic functions and metal ions is realized. Extraction and stripping measurements show that the composition of the capsule membrane doesn't hinder the mass transfer. A model, taking account only of the diffusion in the gel phase, is studied.

Bioseparations with permeable particles

Permeable large-pore particles have many applications, in particular in perfusion chromatography for bioseparations. The objective of this paper is to elucidate the mass transport mechanisms in two commercial adsorbents-POROS Q/M and Q Hyper D-and to answer the question if intraparticle convection is present as a mass transfer mechanism. The paper contains three sections. In the first part, mass transfer inside porous particles is discussed. The mass transfer mechanism which allows improved performance of perfusion chromatography is intraparticle convection. The combined effect of intraparticle convection and diffusion is an "augmented" effective diffusivity. This is the key concept to explain the peak sharpening and modified Van Deemter plots found with large-pore particles. In the second part, column efficiencies in terms of HETP as a function of bed superficial velocity are experimentally measured for a non-retained protein (bovine serum albumine, BSA) in two adsorbents: POROS Q/M (PerSeptive Biosystems) and Q Hyper D (BioSepra). In the third section breakthrough curves for both materials are measured for a test protein (BSA) from which useful capacities and productivities as a function of flow-rate are calculated. Experimental results indicate that intraparticle convection plays indeed an important role in both adsorbents.