1,355,115 research outputs found
Il rapporto tra risparmiatori e banche dopo il 2000: un nuovo matrimonio dopo i tradimenti?
No full textDieci anni di contratti di programma nel sud-est Adriatico: evidenze del passato e lezioni per il futuro
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Mirror imaging of impacted and supernumerary teeth in dizygotic twins: a case report
No full textBackground: Mesiodens is the most common type of supernumerary tooth found in the premaxilla. It might be discovered during the clinical examination as a casual finding on a radiograph or as the cause of an unerupted maxillary central incisor. The genetic transmission of supernumerary and impacted teeth is poorly understood. Mirror imaging in twins has been reported frequently in relation to several unilateral dental anomalies including mesiodens. This phenomenon is the appearance of an asymmetrical feature or anomaly occurring on the right side of one twin but on the left side of the other twin. The event of mesiodens mirror imaging in monozygotic twins has been described in literature.
Results: This is the first reported case of mesiodens mirror imaging in dizygotic twins. The described mesiodens caused the eruption failure of maxillary permanent incisors. The supernumerary teeth were removed to facilitate the spontaneous eruption of the impacted permanent maxillary incisors.
Clinical Implications: Studies related to supernumerary teeth can be useful to clinicians in the early diagnosis of this anomaly. Clinical and radiographic examinations provide a correct therapeutic approach
FROM THE VIBRATIONAL DYNAMICS OF GLASSES TO THE MELT VISCOSITY AND BACKWARD TO GLASSES
No full textThere is a growing evidence of nanoscale modifications in silicate and volcanic melts both during viscosity measurements and during eruptions. This challenges the possibility of being able to quantify the contribution to the measured viscosity of the crystal-free melt phase. This doctoral project deals with Raman spectroscopy investigation of glasses having a wide range of compositions. Central here is the derivation of the viscosity of volcanic and of technical melts from the vibrational properties of their parental glasses. We developed and further validate a crossed Raman-Brillouin model (in synergy with the BGI of Bayreuth), in a chemical domain encompassing virtually the whole magmatism on Earth. Our results provide an alternative method to derive viscosity, bypassing the complex procedures of the typical measurements at high temperature. Moreover, the study provides a new way in which to develop further studies of the nanoscale dynamics of natural melts and its impact on the style of volcanic eruptions. Concluding, our results support the link between acoustic modes and the boson peak, adding new insights about its long-debated nature
Accelerating orthodontic tooth movement: a new, minimally-invasive corticotomy technique using a 3D-printed surgical template
No full textA reduction in orthodontic treatment time can be attained using corticotomies. The aggressive nature of corticotomy due to the elevation of muco-periosteal flaps and to the duration of the surgery raised reluctance for its employ among patients and dental community. This study aims to provide detailed information on the design and manufacture of a 3D-printed CAD-CAM (computer-aided design and computer-aided manufacturing) surgical guide which can aid the clinician in achieving a minimally-invasive, flapless corticotomy
Immediate loading of implants inserted in edentulous arches using multiple mucosa-supported stereolithographic surgical templates: a 10-year prospective cohort study
No full textThe purpose of this prospective study was to evaluate survival and marginal bone loss at 10-year follow-up of implants inserted in completely edentulous arches and immediately loaded using multiple mucosa-supported stereolithographic surgical templates. The influence on marginal bone loss of the following variables was evaluated: sex, smoking habit, arch, implant position, implant diameter, and implant length. Prosthesis survival and success were also determined. STROBE guidelines were followed. One hundred and eighty-eight implants were inserted in 16 consecutively selected patients using a prefabricated metal-reinforced full-arch provisional acrylic restoration. The definitive metal-ceramic full-arch prosthesis was delivered within 2 weeks. Kappa statistics, two-way analysis of variance (ANOVA) with Bonferroni adjusted post hoc test, one-way ANOVA with Tukey's range test, and unpaired Student t-tests were used for the analysis. Four implants failed during the first year of function (maxilla 3, mandible 1), leading to a 10-year survival rate of 97.9%. The mean marginal bone loss after 10 years was 0.76mm. The marginal bone changes were found not to be influenced significantly by the variables evaluated (P>0.05). The prosthetic success rate was 66.7%; no prosthesis failures occurred. In conclusion the technique described is a predictable treatment option with high survival in the long-term follow-up
Generation adequacy e mercati energetici liberalizzati: spunti di riflessione per il sistema elettrico italiano
No full textIl sistema elettrico italiano fra pianificazione e mercato: resource adequacy o regulation shortcoming?
No full textRecensione: Clô A. (2008), Il rebus energetico. Tra politica, economia e ambiente, Bologna, Il Mulino, pp. 240.
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