Influencia del tipo de práctica del dentista en el manejo del canino maxilar incluido por palatino / Influence of the type of dentist practice on the management of the palatally impacted canine

Los caninos maxilares incluidos por palatino constituyen un trastorno eruptivo frecuente cuyo tratamiento en nuestras clínicas depende en gran medida de la formación y la experiencia previas del profesional. Como consecuencia de ello, los resultados no son uniformes. Presentamos siete casos de caninos maxilares incluidos por palatino tratados con distintos abordajes por diferentes dentistas con un distinto bagaje profesional (dentista general, cirujano oral, experto en estética dental, prostodoncista y ortodoncista respectivamente). La discusión de los casos pone de manifiesto los criterios que habían justificado las correspondientes opciones terapéuticas (AU)

The palatally displaced maxillary cuspids are a common eruption disorder whose management in our clinics mainly depends on the previous experience of the involved professional. As a result, the outcome of the treatment is not uniform. We present seven cases of palatally impacted maxillary cuspids managed with different approaches by several dentists with a different professional background (general dentist, oral surgeon, expert in dental esthetics, prosthodontist and orthodontist). The discussion of these cases reveals the criteria that had justified the corresponding treatment approaches (AU)

Desarrollo tardío de múltiples dientes supernumerarios en una paciente con miastenia gravis juvenil tratada con azatioprina / Delayed development of multiple supernumerary teeth in a patient with juvenile myasthenia gravis treated with azathioprine

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Renal fluoride excretion in children following topical application of fluoride varnish.

AIM: To demonstrate that the application of dental fluoride varnishes in children increases urinary fluoride excretion. MATERIALS AND METHODS: From a randomly assembled group of 42 children aged between 5 and 8 years, residing in a community with non-fluoridated water, spot urinary samples were taken before the topical application of dental fluoride varnish and 2 hours afterwards. In an age-matched control group of 16 children from the same community, who received no treatment, samples were taken the same way. The urinary excretion of fluoride was analysed by determining fluoride ion (F-) level and fluoride/creatinine (F/Cr) ratio in the urine. RESULTS: In the study group, the average pre- and post-treatment F/Cr ratios were 0.42 and 1.38 mg/g, respectively (p < .001). No significant changes were observed in the control group, which received no treatment. The average 2 hours afterward F/Cr ratios were 0.29 and 0.27 respectively (p = 0.426). CONCLUSION: The topical application of dental fluoride varnish leads to a significant increase in urine F-, which is attributable to the application of the product.

Case report: identical twins revealing discordant hypodontia. The rationale of dental arch differences in monozygotic twins.

BACKGROUND: While it is generally accepted that monozygotic (MZ) twins are identical with respect to inherited traits, because they share 100% of their genetic material, clinical findings and scientific evidence does not support this belief. In addition to environmental factors and stochastic developmental events, a number of genetic mechanisms, detectable by new techniques in molecular genetics, explain the differences frequently observed in MZ twins. CASE REPORT: Nine-year-old twin girls requested treatment for a dental malocclusion. Their facial and occlusal features were very similar. Panoramic radiographs revealed hypodontia of two permanent teeth in one twin (35 and 45) and of only one tooth in the other (45). An incorrect diagnosis of dizygosity (DZ) had been made at birth based on the presence of two amniotic sacs. Despite discordance in the dental complement of both girls their orthodontist suspected that the twins might be identical. A genetic study performed by quantitative fluorescence-polymerase chain reaction (QFPCR) analysis of chromosomes 13, 15, 16, 18, 21, 22, and X confirmed that the twins were MZ. CONCLUSION: Discordances in dental complement between MZ twins are not uncommon and do not exclude monozygosity.