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Purpose To assess whether particles from metal and other alloplastic materials detected in tissues surrounding dental implants could have other sources of origin besides biotribocorrosion or detachment from the implant surface. Materials and methods A total of 52 prostheses were randomly tested at various stages of manufacture. Identification of the detached microparticles was performed using light field microscopy and comparison with previously obtained microscopic images. Results Microparticles of metallic, ceramic, plaster, polishers, or unidentifiable origin were detected in 49 prostheses (94%). Conclusion Without an exhaustive decontamination protocol, prostheses and abutments carry metal microparticles and microparticles of other origins that could contribute to the development of peri-implant pathologies.

Background In the last decade, multiple studies have been published that analyze the relationship between the risk of experiencing biological complications with implants and the presence of certain types of genetic polymorphisms. In the present report, we analyze the controversies that have arisen from this important area of investigation and synthesize the most prominent aspects of knowledge related to this possible etiopathogenic relationship. Material and methods For this review, the biomedical databases PubMed-Medline, SciELO, and DOAJ were used. Different search strategies were employed, from which 298 articles initially emerged. After refinement of the search, 55 articles published between 2002 and 2018 were finally selected based on relevance. Results In certain population groups, there is evidence to support that about a dozen polymorphisms could in some way be related to biological complications in implantology. Indeed, the results may vary according to the ethnic origin of the population studied. Most of the published investigations are initial studies reporting small sample sizes and utilizing different study group homogenization methods. We are still at a preliminary stage of our understanding and development with regard to these types of biomarkers. The interesting results identified indicate that new investigations will be necessary to eliminate the biases observed in some studies and to homogenize the research groups. In order to clarify the controversies surrounding the current knowledge in this field, we believe that it will be necessary to employ larger study groups and search for possible synergistic effects between different polymorphisms. Key words:Polymorphism, genetic markers, peri-implantitis, biological complication, dental implant.

Schwannoma or neurilemmoma is an infrequent benign tumor in the oral cavity that originates from the Schwann cells on the neural sheath of the peripheral nerves. Schwannomas are frequently located in the soft tissues of head and neck region, but only a 1 to 12% of them are located in the oral cavity. Some histological variants of schwannoma have been described including the cellular, plexiform, epithelioid, ancient, and melanocytic types. The “ancient schwannoma” is an uncommon variant of this tumor that shows specific histological characteristics, and is rare in the oral cavity with less than 15 cases described on the literature. Most of them were located in the tongue or in the floor of the mouth, being the hard palate an extremely rare localization. We present a new clinical case of an ancient schwannoma with a long time of evolution, arising from the nasopalatine nerve, and located in the hard palate of a 35 year old female. We also review the main clinical and histological characteristics of this pathology., peer-reviewed

La hiperplasia coronoidea es una condición patológica muy poco frecuente, caracterizada por un crecimiento exagerado de la apófisis coronoides mandibular unilateral o bilateral. Desde la primera descripción realizada por Langenbeck a mediados del siglo XIX han aparecido descritos ocasionalmente en la literatura nuevos casos de esta rara alteración. Aunque en ocasiones es asintomática, su principal manifestación clínica es la restricción de la movilidad mandibular, principalmente en los movimientos de apertura y protrusión. Dicha limitación se debe a la impactación de la apófisis coronoides con el hueso cigomático. En este trabajo se presenta el caso clínico de un varón de 30 años de edad sin antecedentes médicos de interés que acude a consulta por un cuadro de limitación de apertura progresiva y dolor en la región temporomandibular. Tras la exploración, el empleo de técnicas radiológicas convencionales y especiales permitieron confirmar el diagnóstico de hiperplasia coronoidea bilateral. Así mismo, en este trabajo se recogen los principales aspectos clinicopatológicos y diagnósticos de esta alteración. Se realiza un repaso de los aspectos más importantes en el diagnóstico diferencial de los procesos que cursan con limitación de la apertura bucal. Dentro de este diagnóstico diferencial, y a pesar de su baja prevalencia, debe incluirse esta patología.

Linear IgA disease (LAD) is a chronic, subepithelial blistering disease that is associated with the presence of linear deposits of IgA along the basement membrane zone. Etiopathogenic aspects of LAD are only partially known. LAD is clinically characterized by vesiculobullous skin and mucous lesions. Although more than half of LAD patients present oral mucosal lesions, there are only a few cases reported of oral lesions as the only manifestation of LAD. This study presents 2 of these uncommon cases.

Objectives: Stress and anxiety are controversial factors involved in the complex pathogenesis of Recurrent Aphthous Stomatitis (RAS). The determination of salivary cortisol is a useful, simple and safe test to detect states of high stress or anxiety. The aim of this study is to check for changes in salivary cortisol levels in patients with RAS during periods of active disease. Study design: A measurement of cortisol employing Enzyme-Linked Immuno Sorbent Assay (ELISA) was carried out in samples of unstimulated saliva from 20 patients with active lesions of RAS and 10 healthy individuals used as controls. Results: Increased levels of salivary cortisol were detected in 3 cases, all of them within the group of patients with RAS. In none of the control group patients the level of salivary cortisol was increased. The mean level of salivary cortisol was 0.64 mg / dl (range 0.2 to 1.62) for patients with RAS and 0.57 mg / dl (range 0.25 to 1.09) for controls. Conclusion: Salivary cortisol levels are not statistically higher in patients with active lesions of RAS. Key words:Recurrent aphthous stomatitis, cortisol, oral ulcers, canker sores, salivary cortisol.

La hiperplasia coronoidea es una condición patológica muy poco frecuente, caracterizada por un crecimiento exagerado de la apófisis coronoides mandibular unilateral o bilateral. Desde la primera descripción realizada por Langenbeck a mediados del siglo XIX han aparecido descritos ocasionalmente en la literatura nuevos casos de esta rara alteración. Aunque en ocasiones es asintomática, su principal manifestación clínica es la restricción de la movilidad mandibular, principalmente en los movimientos de apertura y protrusión. Dicha limitación se debe a la impactación de la apófisis coronoides con el hueso cigomático. En este trabajo se presenta el caso clínico de un varón de 30 años de edad sin antecedentes médicos de interés que acude a consulta por un cuadro de limitación de apertura progresiva y dolor en la región temporomandibular. Tras la exploración, el empleo de técnicas radiológicas convencionales y especiales permitieron confirmar el diagnóstico de hiperplasia coronoidea bilateral. Así mismo, en este trabajo se recogen los principales aspectos clinicopatológicos y diagnósticos de esta alteración. Se realiza un repaso de los aspectos más importantes en el diagnóstico diferencial de los procesos que cursan con limitación de la apertura bucal. Dentro de este diagnóstico diferencial, y a pesar de su baja prevalencia, debe incluirse esta patología. Coronoid hyperplasia is an uncommon pathology characterized by an excessive uni or bilateral growth of the mandibular coronoid process. Since the first description by Langenbeck in the middle of the XIX century, many cases have been reported in the literature. In some cases patients are asymptomatic. Nevertheless, in most of them a limitation in the mouth movements can be observed, especially during the opening and protrusion movements. This limitation is caused by the impact of the coronoid process with the zigomatic bone. In this paper we present the case of a 30 years old male patient, without other medical history, that was remitted to our service because of the presence of severe pain in the temporomandibular area and a progressive limitation of the mouth opening. After the clinical exploration a radiographic exam was carried out. Based on them the patient was diagnosed of bilateral coronoid hyperplasia. We also review the most important aspects on this disease, especially those related to the differential diagnosis with other pathologies causing limitation of mouth movements. Coronoid hyperplasia must be always considered in the differential diagnosis in cases of progressive mouth movement limitation, although this is a really uncommon pathology.

espanolLa Estomatitis Aftosa Recurrente (EAR) es una patologia con una elevada prevalencia y una compleja etiopatogenia que aun no ha sido completamente esclarecida. El consumo de tabaco guarda una curiosa relacion con esta patologia ejerciendo un efecto protector cuyo origen no es bien comprendido y que ha sido objeto de controversia. En este trabajo se recogen los datos sobre consumo de tabaco en 171 pacientes con diagnostico de EAR y se analiza su relacion con los datos clinicos de dichos pacientes, atendiendo especialmente a la frecuencia, periodicidad, localizacion, tamano y numero de lesiones. Asimismo, en este trabajo se realiza una revision de los aspectos mas controvertidos de la relacion entre el consumo de tabaco y la clinica de la EAR. EnglishRecurrent aphtohus stomatitis (RAS) is a common type of ulcerative disease of the oral mucosa with a complex etiology that remains unclear. Smoking habit has a surprising, controversial and not well understood relationship with this disease, preventing the development of new lesions. In this work we present the results on tobacco consumption among 171 RAS patients. We also analyze the clinical aspects of these patients, especially those related to the frequency, location, number and size of the lesions. In this paper we also review the most important controversies on the relationship between the smoking habit and the clinical findings in RAU patients.

La Estomatitis Aftosa Recurrente (EAR) es una patología con una elevada prevalencia y una compleja etiopatogenia que aún no ha sido completamente esclarecida. El consumo de tabaco guarda una curiosa relación con esta patología ejerciendo un efecto protector cuyo origen no es bien comprendido y que ha sido objeto de controversia. En este trabajo se recogen los datos sobre consumo de tabaco en 171 pacientes con diagnóstico de EAR y se analiza su relación con los datos clínicos de dichos pacientes, atendiendo especialmente a la frecuencia, periodicidad, localización, tamaño y número de lesiones. Asimismo, en este trabajo se realiza una revisión de los aspectos más controvertidos de la relación entre el consumo de tabaco y la clínica de la EAR. Recurrent aphtohus stomatitis (RAS) is a common type of ulcerative disease of the oral mucosa with a complex etiology that remains unclear. Smoking habit has a surprising, controversial and not well understood relationship with this disease, preventing the development of new lesions. In this work we present the results on tobacco consumption among 171 RAS patients. We also analyze the clinical aspects of these patients, especially those related to the frequency, location, number and size of the lesions. In this paper we also review the most important controversies on the relationship between the smoking habit and the clinical findings in RAU patients.

Objetives: Recurrent aphthous stomatitis (RAS) is a common pathology of the oral mucosa with a complex and multifactorial etiology. Tumour Necrosis Factor-alpha (TNF?) is a cytokine with an important but not well-known role in the development of new lesions in RAS patients. Modifications of salivary levels of TNF? in RAS patients during the active periods of the disease have been measured in this work. The possible implication of TNF? in RAS etiology is also discussed. Study design: The study group was composed of 20 patients previously diagnosed with RAS and randomly selected. As a control group 10 healthy patients were also randomly selected. In both groups a TNF? assessment was carried out in non stimulated saliva. All the patients in the study group presented active lesions at the moment of the salivary sample collection. Values oscillating between 0 and 8.1 pg/ml were considered as normal. Results: Salivary TNF? levels are 2 to 5 times higher in RAS patients than those of healthy patients. Conclusions: TNF? has a possible implication in the RAS etiology and it may also have an important role in the search of new treatments for this disease.

espanolEl uso de sustancias para el aumento de los tejidos blandos con fines cosmeticos puede ocasionar la aparicion de diferentes efectos adversos, entre los que se encuentran las reacciones inflamatorias tardias. Se presenta un caso clinico de una de estas reacciones en una paciente de 41 anos de edad que habia sido infiltrada 4 anos antes en ambos surcos nasogenianos y glabelar con un gel de poliacrilamida y posteriormente con toxoide botulinico tipo A. Se discuten los principales aspectos clinico-patologicos de los procesos asociados a procedimientos cosmeticos faciales. EnglishThe use of substances for soft tissues augmentation for cosmetic purposes may produce different clinical adverse effects, including late inflammatory reactions. We report a case of a this reaction in a patient aged 41 years old female, who was infiltrated 4 years ago in both paranasal furrows and glabelar area with a polyacrylamide gel and posteriorly with botulinum toxoid type A. We discuss the main aspects of clinical and pathological processes associated with facial cosmetic procedures.

Several techniques have been used to treat the oroantral fistula with similar rates of success and failure. Some of them frequently present anatomical disadvantages. They can reduce vestibular depth, cause lack of support bone, or cause fusion of the Schneiderian and mucosal membranes. In this report, we present 3 cases of orosinusal fistulas successfully treated with a simultaneous closure of the communication and sinus floor augmentation. At the same time, this technique enables the restoration of the alveolar process with enough bone volume, which facilitates later implant surgery, prosthetic rehabilitation, or even some orthodontic treatments.

Prosthodontic rehabilitation using dental implants has become a common practice in dentistry at the present time. The number of complications related to dental osseointegrated implants has increased according to the generalization of its use along the last decade. Among the most common of these complications are chronic inflammatory conditions affecting both hard and soft tissues around dental implants. Although severe complications are uncommon, in recent years several cases of oral squamous cell carcinoma adjacent to dental implants have been published. In this paper we present a new unusual case of primary oral squamous cell carcinoma arising around a dental fixed prosthesis over osseointegrated implants in a 76 male patient with no previous history of malignance and no risk factors related to oral cancer.

La enfermedad por depósito lineal de IgA o enfermedad IgA lineal (EAL) es un proceso mucocutaneo crónico e infrecuente de origen autoinmune, caracterizado por depósitos lineales de IgA a lo largo de la membrana basal. En la mayor parte de los casos, junto a las lesiones cutáneas, aparecen lesiones orales y en otras mucosas. Se han descrito casos en los que la afectación se limitaba a la mucosa oral. Por ello es importante el conocimiento de esta patología a la hora de establecer el diagnóstico diferencial de las enfermedades mucocutaneas ampollares. En esta revisión se analizan los principales aspectos clinicopatológicos de esta enfermedad, haciendo un hincapié especial en las manifestaciones orales. The Linear IgA deposit related disease or Linear IgA disease (LAD) is a chronic, uncommon and autoimmunological mucocutaneous disease, characterised by linear IgA deposits along the basement membrane zone. In mainly cases, moreover cutaneous lesions, there are oral mucosal and other mucosal lesions. There are also, some cases published of Linear IgA disease limited to oral mucosa. The known of this disease is important for the establishment of a correct differential diagnosis in cases of blistering mucocutaneous diseases. In this paper, we analyze the most important features of this disease, attending specially to the oral manifestations.

La enfermedad por depósito lineal de IgA o enfermedad IgA lineal (EAL) es un proceso mucocutaneo crónico e infrecuente de origen autoinmune, caracterizado por depósitos lineales de IgA a lo largo de la membrana basal. En la mayor parte de los casos, junto a las lesiones cutáneas, aparecen lesiones orales y en otras mucosas. Se han descrito casos en los que la afectación se limitaba a la mucosa oral. Por ello es importante el conocimiento de esta patología a la hora de establecer el diagnóstico diferencial de las enfermedades mucocutaneas ampollares. En esta revisión se analizan los principales aspectos clinicopatológicos de esta enfermedad, haciendo un hincapié especial en las manifestaciones orales. The Linear IgA deposit related disease or Linear IgA disease (LAD) is a chronic, uncommon and autoimmunological mucocutaneous disease, characterised by linear IgA deposits along the basement membrane zone. In mainly cases, moreover cutaneous lesions, there are oral mucosal and other mucosal lesions. There are also, some cases published of Linear IgA disease limited to oral mucosa. The known of this disease is important for the establishment of a correct differential diagnosis in cases of blistering mucocutaneous diseases. In this paper, we analyze the most important features of this disease, attending specially to the oral manifestations.

To know the most important clinical features of Burning Mouth Syndrome (BMS) in our environment.A prospective study of 30 BMS patients, 29 female and 1 male, with a mean age of 60.2 years (range 37-89), was made. A previously designed clinical protocol, including blood counts, levadure culture, oral pH measurement and non-stimulated salivary flow rate, was completed by all patients. Comparative and descriptive statistical analysis was performed. The Chi-square test was applied (p0.05).Moreover of a burning sensation, 60 % of patients presented oral dryness and 60 % dysgeusia. The tongue was the most frequent site affected of burning sensation (66.7 %). Type II of BMS was the most common (53.3%). In women, 82.9 % were postmenopausal. A 13.3 % of patients suffered type II Diabetes, 6.7 % vitamin deficiency and 56.6 % used xerostomy-inducer medication. The 56.6 % of patients showed chronic anxiety and/or depression. The 46.7 % had a deficient oral hygiene level and 44.4 % wore inadequate dentures. Salivary flow rate was decreased in 50 % of patients. Significant levadure growth was not detected in any case.BMS patients in our environment are principally postmenopausal women, with tongue burning, xerostomy, dysgeusia and chronic anxiety and/or depression.