Spilanthes Americana flower has been commonly used in the treatment of   recurrent herpes labialis through the fraction of the flower extract on yellowish oil, which has often been diluted in vaseline or alcohol. The objective was  identify and compare the chemical composition of the flowerhead and the extract of Spilanthes americana flower diluted in vaseline and alcohol. Methods: A descriptive study was carried out to make the chemical identification of the flower head of Spilanthes americana and the extract diluted in vaseline and alcohol, which was subjected to the process of Infrared Spectroscopy by Fourier Transform. Results: Characteristic functional groups of spilanthol were identified in the flowerhead of Spilanthes americana and the extract diluted in vaseline and alcohol, which correspond to the chemical formula N-isobutyl-2,6,8-decatrienamide such as linear aliphatic hydrocarbon, gem-dimethyl group, carbonyl group and disubstituted unsaturated alkenes. The analysis permitted the identification of different functional groups in different samples. In the pure sample of Spilanthes Americana, the presence of a secondary amine, a nitro group, an ester, a nitrite and nitrate and sulfur in the form of aromatic sulfonamide was determined.  In the spectra of the sample of the pure solid and the extract diluted in vaseline, disubstituted unsaturated alkenes with isomery trans were observed, while in the extract diluted in alcohol a configuration cis was found. Conclusion: The spectroscopic analysis evidenced the presence of characteristic functional groups of compound spilanthol, which modified the trans isomery of the pure sample and the one diluted in vaseline cis in the extract prepared in alcohol. Finally, common compounds to the three sulfur samples and an organic ester functional group were found. 

Introducción y objetivo: Existen reportes de complicaciones que hacen que el implante fracase, estojustifica la evaluación permanente de los mismos. Se buscó evaluar clínica y radiográficamente los implantescolocados en un servicio odontológico de posgrado para proponer un protocolo de evaluacióny monitoreo. Materiales y método: Este estudio descriptivo evaluó 30 implantes de 16 pacientes. Losantecedentes quirúrgicos se tomaron de la historia clínica. Se valoraron criterios primarios como dolor,exudado, supuración, movilidad y profundidad del surco y criterios secundarios como los índices deplaca y de sangrado. Se analizaron radiografías peri apicales milimetradas para identificar la presenciade anormalidades y la pérdida ósea marginal. Resultados: Diecinueve implantes cumplieron con loscriterios de éxito Ahlqvist. Clínicamente, 22 implantes presentaron alguna alteración en los criterios denormalidad evaluados. En los criterios primarios se encontró presencia de signos inflamatorios en 11implantes. El índice de higiene oral registró un porcentaje de 33% de placa en 2 implantes de un mismopaciente. El índice de sangrado registró un valor de 1 en 22 implantes. No se observó movilidad en todala muestra, ni imágenes radio-lúcidas alrededor de los implantes. Conclusión: Diecinueve de los implantesanalizados registraron “éxito clínico” según los criterios de Ahlqvist. Radiográficamente 28 implantesregistraron condiciones dentro de parámetros normales. Los protocolos para evaluar los implantes debenconsiderar la historia médica y quirúrgica, criterios primarios y secundarios, la pérdida ósea marginaly la calidad del hueso alrededor del implante. Abstract:Introduction and objective: There are reports of complications that can cause implants to fail. Thisjustifies long term evaluation of implants. The purpose of this study was to evaluate clinically and radiographicallyimplants placed in a postgraduate dental service in order propose a protocol for evaluatingand monitoring. Materials and Methods: This descriptive study evaluated 30 implants on 16 patients.The surgical records were obtained from the patient's medical history. Primary criteria such as pain,exudate, suppuration, mobility and probing depth were assessed. Secondary criteria such as plaque andprobing depth index were also assessed. Radiological analysis was performed to identify the presence ofabnormalities and the average marginal bone loss. Results: 19 of the implants evaluated met the successcriteria by Ahlqvist et al. Clinically, 22 implants showed some changes in the criteria of abnormalityassessed in this study. Regarding the primary criteria, presence of inflammatory signs were found in 11implants. Oral hygiene index showed a rate of 8% in 4 implants in the same patient, and 33% of plaquein 2 implants in the same patient. The bleeding index showed a value of 1 in 22 implants. Mobility wasnot observed in the sample and no radiolucent images around the implants. Conclusion: Nineteen of theexamined implants were considered clinically successful according to the criteria by Ahlqvist et al. Radiographically,28 implants showed conditions within normal parameters. Protocols for evaluating dentalimplants should consider the medical and surgical history, primary and secondary criteria , marginal boneloss and bone quality around the implants.

RESUMEN. Antecedentes: Innumerables complicaciones hacen que una prótesis parcial fija (PPF) o corona individual fracasen. Por tal razón, se requiere evaluarlas permanentemente, principalmente en los ámbitos donde se forman los profesionales en odontología. Objetivo: Evaluar biológica, mecánica y funcionalmente las PPF colocadas en un servicio odontológico de pregrado en Manizales, Colombia. Métodos: Este estudio descriptivo evaluó 44 prótesis fijas realizadas en 23 pacientes. Los antecedentes se tomaron de la historia clínica. Se valoraron criterios clínicos biológicos, mecánicos y funcionales a través de montajes en un articulador semiajustable. Se realizó una clasificación protésica como tratamientos exitosos, tratamientos con complicaciones reversibles y con complicaciones irreversibles. Resultados: 36 prótesis cumplieron parámetros de supervivencia protésica, entre los cuales complicaciones reversibles relacionadas con alteraciones de los tejidos periodontales y alteración de los contactos interoclusales se identificaron en 20 prótesis. 8 prótesis presentaban complicaciones irreversibles afectadas por severos problemas periodontales y desadaptaciones marginales. No se observaron alteraciones pulpares y ni fracturas dentales o protésicas. Conclusión: La mayoría de las PPF (81,8 %) mostraron parámetros de supervivencia protésica con algunas complicaciones reversibles. Entre los factores identificados que se deben enfatizar en la formación de los estudiantes de odontología al hacer prótesis están el compromiso del paciente con el tratamiento, la higiene oral y el mantenimiento clínico. Ellos son necesarios para garantizar la longevidad de las restauraciones, teniendo en cuenta que el riesgo de complicaciones se incrementa con el tiempo.ABSTRACT. Background: Innumerable complications may cause a fixed partial prosthesis (FPP) or single crown to fail. Therefore, it is important following up them, particularly in those spaces where dental professionals are trained. Purpose: To conduct a biological, mechanical, and functional evaluation of FPPs cemented at a predoctoral dental clinic in Manizales, Colombia. Methods: This descriptive study evaluated 44 FPPs made in 23 patients. Medical information was obtained from patients’ clinical records. Biological, mechanical, and functional criteria were evaluated through analysis of mounted models in semi-adjustable articulators. Decision criteria were: successful treatments, treatments with reversible complications, and treatments with irreversible complications. Results: 36 prostheses met prosthetic survival parameters of which 20 presented reversible complications consisting of alterations of periodontal tissues and interocclusal contacts. 8 prostheses showed irreversible complications, which were caused by severe periodontal problems and marginal discrepancies. Neither pulpal alterations nor dental or prosthetic fractures were observed. Conclusion: Most FPP (81.8 %) met prosthetic survival parameters with some reversible complications. Factors identified that should be emphasized while training dental students in fixed prosthodontics include: patient compliance with treatment recommendation, dental hygiene, and maintenance follow-ups. They are necessary to guarantee lasting results if considering that risk of complications increases with time.