Rehabilitación fija sobre dos implantes cortos ferulizados en vano desdentado maxilar posterior atrófico

Background: A problem when planning implants in long-standing toothless areas is the atrophy of the alveolar ridge close to the maxillary sinus1. Additional surgical procedures (maxillary sinus lift and grafts) are usually performed to install conventional implants (≥10mm in length), involving high morbidity, invasiveness, prolonged healing periods, and high treatment costs2. A solution to this problem is the use of short implants (<10mm in length).The objective is to document the use of short implants as a successful alternative in implant-supported rehabilitation of the free end span in the posterior maxillary area with low bone height. Clinical Presentation: Female patient, 62 years old, with no relevant medical history, consulted for the rehabilitation of teeth 14 and 15 extracted 10 years ago. On clinical examination, the scarce bone height of the left posterior maxillary space was evidenced. Radiographically there was proximity to the maxillary sinus.Short implants of 5 mm wide and 7 long were installed for tooth 14 and 5 mm wide and 6 long for tooth 15 (Unitite Prime Compact, SIN Brand), being rehabilitated and splinted using a fixed prosthesis cemented on an abutment of titanium. 12 months after rehabilitation, she maintained excellent functional results. Clinical Relevance: The literature reports that short implants are a viable treatment alternative in atrophic ridges, demonstrating a satisfactory survival rate similar to long implants but with less marginal bone loss, risk of complications, surgical time, and cost of treatment3,4.When multiple short implants are required, splinted restorations can be performed, increasing the area of occlusal resistance to axial forces, distributing less load towards the cement, implant abutment, and peri-implant interface. Rehabilitations of this type have shown fewer prosthetic complications, screw loosening, and the number of failed implants4. Conclusion: Rehabilitation using short splinted implants is a valid option for rehabilitating posterior areas of the atrophic maxilla, avoiding the need for complementary surgeries, obtaining satisfactory survival rates with low complications and better prosthetic prognosis than long implants after additional surgical techniques and short non-splinted implants.Antecedentes: Una problemática al planificar implantes en zonas desdentadas de larga data, es la atrofia del reborde alveolar cercano al seno maxilar1. Se realizan procedimientos quirúrgicos adicionales (elevación de seno maxilar e injertos), para instalar implantes convencionales (≥10mm de longitud), que implican una alta morbilidad, invasividad, curación prolongada y altos costos de tratamiento2. Una solución es el uso de implantes cortos (<10mm de longitud).Presentación Clínica: Paciente sexo femenino, 62 años, sin antecedentes médicos de relevancia, consulta por rehabilitación de dientes 14 y 15 extraídos hace 10 años. Al examen se evidencia escasa altura ósea. Radiográficamente existe cercanía con el seno maxilar.Se instalaron implantes cortos para los dientes 14 y 15, siendo rehabilitados y ferulizados mediante prótesis fija cementada sobre pilar de titanio. A 12 meses de la rehabilitación, mantuvo excelentes resultados funcionales.Relevancia Clínica: La literatura reporta que los implantes cortos son una alternativa de tratamiento viable en crestas atróficas, demostrando una tasa de supervivencia satisfactoria similar a los implantes largos pero con menor pérdida ósea marginal, riesgo de complicaciones, tiempo quirúrgico y costo del tratamiento3,4.Cuando se requieren múltiples implantes cortos, se pueden realizar rehabilitaciones ferulizadas, aumentando el área de resistencia oclusal a fuerzas axiales, distribuyendo menor carga hacia el cemento, pilar de implante e interfaz periimplantaria. Rehabilitaciones de este tipo han demostrado menores complicaciones protésicas, aflojamiento de tornillos y número de implantes fallidos4.Conclusión: La rehabilitación mediante implantes cortos ferulizados es una opción válida para la rehabilitación sobre zonas posteriores del maxilar atrófico, evitando la necesidad de cirugías complementarias, obteniéndose tasas de supervivencia satisfactorias con bajas complicaciones y mejor pronóstico protésico que los implantes largos post técnicas quirúrgicas adicionales e implantes cortos no ferulizados

Interluquina-6 como biomarcador de éxito de tratamientos para tratornos temporomandibulares articulares

Objective: To evaluate IL-6 level changes in synovial fluid (SF) in the temporomandibular joint (TMJ) post-treatment of temporomandibular disorders (TMD).  Material and Methods: In a first search, MeSH terms were used in Pubmed. A second one was conducted in Pubmed and the Cochrane Library, with MeSH terms and keywords in an advanced search. Inclusion criteria were all systematic reviews since 2015 on treatments for TMD, and clinical studies since 2015 where IL-6 levels were measured in SF post-treatment of TMD. Exclusion criteria were all studies where IL-6 levels were measured in plasma or joint tissue.Results: In the first search, 41 results were obtained per title and abstract, of which 15 systematic reviews remained meeting the inclusion criteria. In a second search, 35 results were obtained, of which 28 were excluded by title and abstract as they were not pertinent. After full reading, three randomized clinical studies remained that met the inclusion criteria. Conclusion: It is necessary to continue considering new therapeutic strategies to decrease levels of pro-inflammatory cytokines, where IL-6 might become a possible biomarker in TMD.Objetivo: Evaluar si cambia el nivel de IL-6 en liquido sinovial (LS) de articulación temporomandibular (ATM), post tratamiento de transtornos temporomandibulares (TTM) articulares. Especificos: Conocer los tratamientos efectivos para TTM articulares y explorar si existen cambios de nivel de IL-6 en LS post tratamiento de TTM articulares.Materiales y métodos: En una primera búsqueda se utilizaron términos MeSH en Pubmed. La segunda fue realizada en Pubmed y Cochrane Library, con términos MeSH y palabras claves en búsqueda avanzada. Criterios de inclusión: Revisiones sistemáticas desde 2015 sobre tratamientos para TTM articulares. Estudios clínicos desde 2015, donde se mida nivel de IL-6 en LS post tratamiento de TTM articulares. Criterios de exclusión: Estudios donde midan los niveles de IL-6 plasmáticos o en tejido articular.Resultados: En la primera búsqueda se encontraron 41 resultados; por título y resumen quedan 15 revisiones sistemáticas cumpliendo los criterios de inclusión. En la segunda 35 resultados; 28 fueron excluidos por título y resumen al no ser atingentes. Luego de lectura completa, quedan 3 estudios clínicos aleatorizados cumpliendo los criterios de inclusión. Conclusión: Es preciso seguir estudiando, buscando estrategias terapéuticas que puedan disminuir niveles de citoquinas proinflamatorias, siendo IL-6 un posible biomarcador en TTM articulares

Observation of the doubly charmed baryon decay Ξcc++→Ξc′+π+

The Ξcc++→Ξc′+π+ decay is observed using proton-proton collisions collected by the LHCb experiment at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1. The Ξcc++→Ξc′+π+ decay is reconstructed partially, where the photon from the Ξc′+→Ξc+γ decay is not reconstructed and the pK−π+ final state of the Ξc+ baryon is employed. The Ξcc++→Ξc′+π+branching fraction relative to that of the Ξcc++→Ξc+π+ decay is measured to be 1.41 ± 0.17 ± 0.10, where the first uncertainty is statistical and the second systematic. [Figure not available: see fulltext.

Study of charmonium and charmonium-like contributions in B+ → J/ψηK+ decays

A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The J/ψη mass spectrum is investigated for contributions from charmonia and charmonium-like states. Evidence is found for the B+→ (ψ2(3823) → J/ψη)K+ and B+→ (ψ(4040) → J/ψη)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the ψ2(3823) → J/ψη decay

Precision measurement of the Ξcc++Ξcc++ {\varXi}_{cc}^{++} mass

A measurement of the Ξ++cc mass is performed using data collected by the LHCb experiment between 2016 and 2018 in pp collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.6 fb−1. The Ξ++cc candidates are reconstructed via the decay modes Ξ++cc→Λ+cK−π+π+ and Ξ++cc→Ξ+cπ+. The result, 3621.55 ± 0.23 (stat) ± 0.30 (syst) MeV/c2, is the most precise measurement of the Ξ++cc mass to date

Measurement of the photon polarization in Λb→Λγ\Lambda_b \to \Lambda \gamma decays

The photon polarization in $b \to s \gamma$ transitions is measured for the first time in radiative b-baryon decays exploiting the unique spin structure of $\Lambda_b \to \Lambda \gamma$ decays. A data sample corresponding to an integrated luminosity of $6\;fb^{-1}$ collected by the LHCb experiment in $pp$ collisions at a center-of-mass energy of $13\;TeV$ is used. The photon polarization is measured to be $\alpha_{\gamma}= 0.82^{\,+\,0.17\,+\,0.04}_{\,-\,0.26\,-\,0.13}$, where the first uncertainty is statistical and the second systematic. This result is in agreement with the Standard Model prediction and previous measurements in b-meson decays. Charge-parity breaking effects are studied for the first time in this observable and found to be consistent with $CP$ symmetry.Comment: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-030.html (LHCb public pages

Observation of a resonant structure near the Ds+Ds−D_s^+ D_s^- threshold in the B+→Ds+Ds−K+B^+\to D_s^+ D_s^- K^+ decay

An amplitude analysis of the $B^+\to D_s^+ D_s^- K^+$ decay is carried out to study for the first time its intermediate resonant contributions, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV. A near-threshold peaking structure, referred to as $X(3960)$, is observed in the $D_s^+ D_s^-$ invariant-mass spectrum with significance greater than 12 standard deviations. The mass, width and the quantum numbers of the structure are measured to be $3956\pm5\pm10$ MeV, $43\pm13\pm8$ MeV and $J^{PC}=0^{++}$, respectively, where the first uncertainties are statistical and the second systematic. The properties of the new structure are consistent with recent theoretical predictions for a state composed of $c\bar{c}s\bar{s}$ quarks. Evidence for an additional structure is found around 4140 MeV in the $D_s^+ D_s^-$ invariant mass, which might be caused either by a new resonance with the $0^{++}$ assignment or by a $J/\psi \phi\leftrightarrow D_s^+ D_s^-$ coupled-channel effect.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-018.html (LHCb public pages