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Streptococcus abundance and oral site tropism in humans and non-human primates reflects host and lifestyle differences

The genus Streptococcus is highly diverse and a core member of the primate oral microbiome. Streptococcus species are grouped into at least eight phylogenetically-supported clades, five of which are found almost exclusively in the oral cavity. We explored the dominant Streptococcus phylogenetic clades in samples from multiple oral sites and from ancient and modern-day humans and non-human primates and found that clade dominance is conserved across human oral sites, with most Streptococcus reads assigned to species falling in the Sanguinis or Mitis clades. However, minor differences in the presence and abundance of individual species within each clade differentiated human lifestyles, with loss of S. sinensis appearing to correlate with toothbrushing. Of the non-human primates, only baboons show clade abundance patterns similar to humans, suggesting that a habitat and diet similar to that of early humans may favor the growth of Sanguinis and Mitis clade species.

Experts consensus on management of tooth luxation and avulsion

Traumatic dental injuries (TDIs) of teeth occur frequently in children and adolescents. TDIs that impact the periodontal tissues and alveolar tissue can be classified into concussion, subluxation, extrusive luxation, intrusive luxation, lateral luxation, and avulsion. In these TDIs, management of injured soft tissue, mainly periodontal ligament, and dental pulp, is crucial in maintaining the function and longevity of the injured teeth. Factors that need to be considered for management in laxation injuries include the maturation stage of the traumatic teeth, mobility, direction of displacement, distance of displacement, and whether there are alveolar fractures. In avulsion, the maturation stage of the permanent tooth, the out-socket time, storage media/condition of the avulsed tooth, and management of the PDL should also be considered. Especially, in this review, we have subdivided the immature tooth into the adolescent tooth (Nolla stage 9) and the very young tooth (Nolla stage 8 and below). This consensus paper aimed to discuss the impacts of those factors on the trauma management and prognosis of TDI to provide a streamlined guide for clinicians from clinical evaluation, diagnostic process, management plan decision, follow-up, and orthodontic treatment for tooth luxation and avulsion injuries.

Is tuna ecolabeling causing fishers more harm than good?

Nearly 70,000 fishing crew are currently at sea catching the ecolabeled tuna in your sandwich or sushi. Tuna fishing on the High Seas is remote, making it difficult to detect forced labour and important to look into the welfare of fishers on vessels fishing for ecolabeled tuna. The Marine Stewardship Council (MSC) ecolabel says it is keeping forced labour out of the certified supply chain and that buyers choosing certified tuna significantly reduce their exposure. To determine how this is achieved, an analysis was performed of the primary data published by the MSC at https://fisheries.msc.org for the 3327 tuna vessels listed in its program. The data show that a majority of tuna vessel owners (1970 fishing employers) are participating anonymously. Their involvement in forced labour is unknown, and vessel conditions are untraceable for 74% of the tuna catches reported by certifiers. A majority of MSC’s tuna clients (about 4% fishing entities) refuted forced labour on behalf of 53% of tuna fishers in a template that MSC provides and protects with a disclaimer. Yet, on some of the vessels, tuna fishers have recently reported forced labour. Content analysis showed the information provided by MSC’s tuna clients overall deflects (rather than accepts) accountability for human rights and adverse effects, such as debt bondage. These findings matter to fishers’ welfare because the MSC has reported that its program encompasses 59% of the world’s tuna, making its assurances about lower risks in certified tuna influential in the sector, with potential to undermine criminal and civil enforcement.

Expert consensus on the prevention and treatment of enamel demineralization in orthodontic treatment

Enamel demineralization, the formation of white spot lesions, is a common issue in clinical orthodontic treatment. The appearance of white spot lesions not only affects the texture and health of dental hard tissues but also impacts the health and aesthetics of teeth after orthodontic treatment. The prevention, diagnosis, and treatment of white spot lesions that occur throughout the orthodontic treatment process involve multiple dental specialties. This expert consensus will focus on providing guiding opinions on the management and prevention of white spot lesions during orthodontic treatment, advocating for proactive prevention, early detection, timely treatment, scientific follow-up, and multidisciplinary management of white spot lesions throughout the orthodontic process, thereby maintaining the dental health of patients during orthodontic treatment.

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