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.

S7after excision. Diagnosis is based on clinical and histopathological study of injuries. Case Report: 67 years old woman, smoker of 40 cigarettes a day for over 40 years with no medical history of interest. The patient has whitish lesions, asymptomatic, of rough appearance on both jugal mucosa, hard palate, floor of the mouth, ventral surface of the tongue and tonsillar pillars since 5 years ago. We decided to biopsy lesions of the ventral surface of the tongue and floor of mouth. The pathology revealed Stomatitis interface with moderate dysplasia. After of 12 months of checkups with no injuries found, we decided to undergo a new biopsy obtaining a Squamous Cell Carcinoma In situ. We referred to the Maxillofacial Service for surgical excision of the lesions. Conclusion: PVL is a very dangerous disease because of its high percentage of malignant, difficult and controversial treatment monitoring, and questionable effectiveness.

The 69-year-old female patient was referred to our Service presenting with a two-moth history of painless mass in the right parotid gland. The medical history of the patient includes a treatment for arterial hypertension, dyslipidemia and a surgical thyroidectomy. A 1.5 cm lump, soft in consistency and movable when palpated, was observed during the physical examination. A supplementary ultrasound and NMR were requested, the visualization of which resulted in a diagnosis of suspected WT. After the supplementary trials, the patient was briefed and the possibility was pondered considering her age and general condition at the moment of the parotidectomy. Conclusion: WT is a relatively frequent entity, and odontologists must be aware of its clinical manifestations and most relevant diagnostic tests.-Oral Presentation 67 TITLE: Osteonecrosis generated by the use of Bisphosphonates in geriatric patients. A case report AUTHORS:

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S2lesions and candida infection are the most common pathologies in elderly people and with a very prolonged use of their prosthesis. Conclusions: It is necesary to do oral checks to elderly people, because are the ones with a higher prevalence of oral diseases. Just with this periodic checks we could manage to detect those lesions and treat them prematurely with better results and also avoid their establishment, specially the ones associated to a bad care and hygiene of the prosthesis improving the quality of their lifes. Objective: The primary aim is to compare the levels of volatile sulphur compounds (VSC) and organoleptic measurement in healthy individuals and those with periodontal disease. The supporting aim is to assess the ratio of concordance between both diagnostic tests. Methods: a cross-sectional study was carried out on 40 subjects in the dental faculty in Santiago de Compostela, adhering the inclusion and exclusion criteria. Clinical parameters, organoleptic test and VSC concentration with Oral ChromaTM model CHM -1 were recorded. Two groups were observed according to the records taken: patients with and without periodontal disease. VSC levels and organoleptic test were compared, and the ratio of agreement between the two diagnostic tests. Results: Differences were found between healthy subjects and subjects with periodontal disease in hydrogen sulfide 10.56 ± 9.42 mm / 10ml, methyl mercaptan 4.43 ± 6.59 mm / 10ml with statistically significant relation (P<0.05). Of 14 subjects with periodontal disease, 13 had tested positive of halitosis. We found a ratio of concordance of 67% between the two diagnostic tests. Conclusions: Patients with periodontal disease have greater concentrations of VSC and higher ratio of organoleptic perception than healthy subjects. Moderate relation was found between both diagnostic tests. Objective: To analyze the functioning of jaw closing muscles by means of surface electromyography study, after lower third molar surgery. Materials and Methods: This prospective and longitudinal study included 31 patients. All patients underwent three clinical and electromyograph examinations, the first before surgery, the second 72 hours after surgery and th third 7 days after surgery. Clinical paramenters analyzed were pain, inflammation and trismus. Surface eletromyography was performed with surface electrodes on the temporalis and masseter muscles on both sides of the jaw, the patient performing voluntary mastication maximum opening and maximum clenching. Results: It was made clear that pain intensity peaked on the dy of surgery, while inflammation and trismus reached maximum at 72 hours after surgery. Electromyography values predominated in temporalis muscles over messeter muscles. Conclusions: Mastication muscles undergo a reduction in activity after lower third molar extraction. -Oral Presentation