La transmigración se define como el fenómeno en el cual un diente incluido no erupcionado, traspasa en más de la mitad de su longitud la línea media. Es una anomalía poco frecuente y es aún más raro que ocurra de forma bilateral. Se presenta con mayor incidencia en los caninos mandibulares, en el sexo femenino, de forma unilateral, y siendo el canino izquierdo el más comúnmente afectado. El objetivo de este trabajo es describir el manejo quirúrgico satisfactorio en un paciente varón de 16 años, asintomático, el cual presentaba a la exploración clínica intraoral ausencia de ambos caninos mandibulares permanentes y persistencia de canino temporal inferior izquierdo, acompañado de una ligera malposición dentaria. En la exploración radiográfica (panorámica), se observaron ambos caninos inferiores derecho e izquierdo, en posición horizontal, bajo los ápices de incisivos inferiores. Se procedió a la extracción quirúrgica de ambos caninos, transcurriendo el postoperatorio sin incidencias. Se realizaron controles periódicos y radiográficos satisfactorios a los seis meses.

Influencia de los terceros molares retenidos en pacientes con trastornos de la articulación temporomandibular en el h. de Madrid AVANCES EN ODONTOESTOMATOLOGÍA/ 35 RESUMEN El objetivo general del presente trabajo ha sido analizar una muestra de pacientes que acudieron al Hospital de Madrid, con trastornos de la articulación temporomandibular, que presentaron inclusión de los terceros molares, comparándolas con otro grupo poblacional con trastornos de la articulación temporomandibular sin la presencia de los mismos. Materiales y Metodología: el estudio se basó en la recolección y análisis de datos de 60 historias clínicas, de pacientes con diagnóstico de trastornos de la articulación temporomandibular atendidos en el Hospital de Madrid divididos en dos grupos con presencia o no de terceros molares incluidos. A dichos grupos se les realizó un estudio comparativo de las variables utilizadas en el estudio: edad, sexo, presencia o no de dolor en la ATM, ruidos en la ATM y disminución de la máxima apertura bucal (MAB). Resultados: se realizó un estudio descriptivo y comparativo de las variables sexo, edad, presencia o ausencia de dolor en ATM, ruidos en ATM y máxima apertura oral encontrando mayor numero de casos en el sexo femenino, la media de las edades oscilan entre los 40 años, en cuanto a la variable dolor en la ATM se encontró aumentada en los pacientes del grupo A, con (43,33%), con respecto a los del grupo B, (38,33%) y las variables ruidos en ATM y máxima apertura bucal se encontraron ligeramente superiores en los pacientes del grupo A.

S237,733mm (±1,8619), opening 45,422mm (±6,1572). The condylar path values have been 46,6925º (±7,53386) for the right side and 49,2299º (±7,97528) for the left one. Significant statistically differences have been found between the left and the right lateralities, being bigger the left one (p<0.000) and between the right and the left condylar path, being higher the left one (p=0.009). Conclusion:In the current study we find out that in the population studied, the lateral movement is bigger and the condylar path is higher on the left side.

The patient carried out posterior follow ups showing a positive healing of the bone around the surgical area. Conclusions: radiographic exploration of non erupted third molars is crucial for the early diagnosis of possible pericoronal cystic pathology associated.

S3the colonization of prosthetic surfaces by respiratory pathogens creates a reservoir which produces respiratory infections. Oral care in these facilities is mostly poor and routine mechanic hygiene is prevented most of the times by lack of means and cooperation. Therefore, the aim of this study has been to analyse the risk factors of this disease in institutionalized patients, as well as to evaluate the association between the lack of oral care and the increase of NHAP rate. Oral features and hygiene procedures in order to decrease said rate were also studied. Material and Methods: A bibliographic search was conducted in the main search engines, introducing as key words "edentulism", "aspiration pneumonia", "oral care" and "nursing homes". Research papers about hospitalized patients or patients with mechanical ventilation were discarded. Results: The search yielded a total of 8 studies, in which dysphagia, feeding dependency, and built up of respiratory pathogens on oral and prosthetic surfaces were the main risk factors observed for NHAP. Conclusions: The lack of oral hygiene in elderly patients is a risk factor for NHAP. The development of routine hygiene procedures in these facilities is paramount in the decrease of the incidence of this disease, hence, more studies should be undertaken in order to establish the most efficient method to achieve an adequate hygiene and a morbidity reduction. Objective: The evaluation of cognitive-functional factors and the state of oral health in adults aged between 65-75 years and 75 years and above treated in three different Dentistry Services in The Community of Madrid. Materials and Methods: An epidemiologic multicentric transversal study was conducted with a sample of 592 patients. The following information was collected from each patient: age, gender, concomitant pathology, medication, family support, evaluation of functional capacity (Katz index, Lawton and Brody index) and state of oral health. Results: According to the epidemiologic indexes evaluated, the average Katz index in third age patients (65-75 years old) was 5.1±1.7 and in fourth age patients (75 years old +) was 4.6±1.8. According to the Lawton and Brody index, it was found that third age patients were more independent than fourth age patients. Furthermore it was found that females in both age brackets were more independent than males. According to oral health, in third age patients, 75% had dental roots, 59.1% had periodontal problems, 79% had periimplantitis illnesses and 34% had oral infections. In fourth age patients 85% had dental roots, 71.5% had periodontal problems, 88.5% had periimplantitis illnesses and 39.2% had oral infections. Conclussions: Fourth age patients have a lower cognitive-functional capacity and worse state of oral health than third age patients.