Prevalencia de microdoncia de incisivos laterales superiores en una población mexicana / Prevalence of upper lateral incisor microdontia in a mexican population

Introducción y objetivo: Microdoncia es una anomalía en la cual están presentes dientes con un tamaño inferior a lo normal. Presenta problemas que afectan la longitud de arco y a la estética facial. Cuando el ancho del incisivo lateral superior (ILS) es menor, igual o hasta 0,7 mm más ancho que el incisivo lateral inferior, el resultado sería exceso de material dentario inferior en relación al superior. Determinar la prevalencia de microdoncia del incisivo lateral superior y determinar la frecuencia de microdoncia en relación al lado y tamaño. Materiales y métodos: Se evaluaron 1345 modelos de pacientes pretratamiento de la Especialidad de Ortodoncia de la Universidad Au+ M tónoma de Nayarit entre los años 2002- 2012, de los cuales 504 cumplieron los criterios de inclusión. Se realizaron las mediciones de los anchos mesiodistales de los incisivos laterales superiores e inferiores y los resultados se resumieron mediante estadística descriptiva. Resultados: El 40,5% presenta ILS con microdoncia, 13% del lado derecho, 12,7% del lado izquierdo y 14,7% de forma bilateral. Para los ILS con microdoncia del lado derecho la media es de 6,6±0,4 mm, los del lado izquierdo es del 6,4±0,5 mm. Para los casos de ILS con microdoncia bilateral la media es 6,2±0,6 mm del lado derecho y del lado izquierdo 6,4±0,5 mm. Conclusion: El estudio refleja un alto porcentaje de microdoncia de ILS de acuerdo a los criterios de Binder y Cohen lo cual debe considerarse en la planeación del tratamiento ortodóncico.

Introduction and objective: Microdontia is an anomaly in which teeth are present with a size below normal. It presents problems involving arc length and facial aesthetics. When the width of the upper lateral incisor (ULI) is lower or equal or until 0.7 mm wider than the lateral incisor, the result would be mandibular excess material in relation to the upper. To determine the prevalence of ULI microdontia and determine the frequency of microdontia relative to size and side. Materials and methods: The universe of study was 1345 models of patients pretreatment of the Especialidad de Ortodoncia of the Universidad Autonoma de Nayarit of the years 2002-2012. Measurements were made of the mesiodistal widths of the upper and lower lateral incisors and applied descriptive statistics. Results: 40,5% of ULI present microdontia, on the right side 13%, 12,7% on the left and 14,7% bilaterally. For right side ULI with microdontia the average was 6,6+0,4mm, the left side was 6,4+0,5mm. For cases with bilateral microdontia the average was 6,2+0,6mm on the right side and 6,5+0,6mm on the left side. Conclusion: The study reflects a high percentage of ULI microdontia according to Binder and Cohen criteria which should be considered in the planning of orthodontic treatment.

Registro de Alteplasa en Síndromes Coronarios Agudos con elevación del ST (REALSICA) / Alteplase in acute coronary syndromes

OBJECTIVE: The registry intends to establish the safety and security of one-hour 100 mg alteplase infusion and 50 mg in 30 minutes to facilitate percutaneous coronary intervention (PCI) in a cardiology hospital with primary angioplasty program (24 hours 365 days a year) with current doses of unfractionated heparin and enoxaparin. METHODS AND RESULTS: REALSICA II is a prospective registry that included 103 patients with final diagnosis of ST elevation myocardial infarction in which Alpert's quality criteria were used. Seventy two patients were under one-hour 100 mg alteplase infusion and thirty one under 30 minutes 50 mg alteplase infusion to facilitate PCI. Patients were young and predominantly males. In both groups > 50% had extensive ST elevation myocardial infarction and 68% were Killip & Kimball I. The majority received reperfusion > 3 hours after the onset of symptoms. In-hospital and follow-up treatment were compliant with Mexican Cardiology Society guidelines. ECG reperfusion was observed in 59% and TIMI III flow in 19% of PCI group. Any intracranial hemorrhage was observed. Global cardiovascular mortality was 11%. Patients under PCI had low incidence of recurrent ischemia and reinfarction. CONCLUSION: REALSICA registry showed in non-complicate acute myocardial infarction ST elevation safety and security of one-hour 100 mg alteplase infusion with current recommended unfractionated heparin and enoxaparin doses in ST elevation myocardial infarction. In complicated patients the regimen to facilitate PCI was associated with increased hemorrhagic complications and requires further research.