Gingivitis descamativa crónica: una manifestación gingival del liquen plano bucal / Chronic desquamative gingivitis: a gingival manifestation of oral lichen planus

RESUMEN El término de gingivitis descamativa ha evolucionado con el decursar de los años. La clasificación de la enfermedad periodontal vigente en Cuba la incluye dentro de los procesos inflamatorios crónicos superficiales. La Academia Americana de Periodontología y la Federación Europea de Periodoncia, han destinado un apartado para esta enfermedad denominado: alteraciones inflamatorias e inmunes. Se presentó una paciente de 27 años de edad, con ardor, sangramiento gingival y molestias al cepillado, la cual acudió a la consulta de Estomatología General Integral. Durante el examen clínico se constató la presencia de zonas eritematosas a nivel de encía marginal e insertada, con exposición del tejido conectivo. Luego de concluida la atención primaria en Periodoncia, la paciente fue remitida a la atención secundaria donde se le diagnosticó un liquen plano bucal con manifestaciones gingivales. Se instauró el tratamiento adecuado hasta la desaparición de las lesiones.

ABSTRACT The term desquamative gingivitis has evolved over the years. The current classification of periodontal disease in Cuba includes it among chronic superficial inflammatory processes. The American Academy of Periodontology and the European Federation of Periodontology have assigned a section for this disease called inflammatory and immune alterations. We present a 27-year-old female patient with burning, gingival bleeding and discomfort when brushing, who came to the General Comprehensive Dentistry consultation. Erythematous areas were observed during clinical examination, at the level of the inserted and marginal gingiva, with exposure of the connective tissue. After the completion of primary periodontal care, the patient was referred to secondary care where she was diagnosed with oral lichen planus with gingival manifestations. Appropriate treatment was instituted until the lesions disappeared.

Factores predictivos en la aparición de la estomatitis subprótesis / Predictive factors in the occurrence of subprosthesis stomatitis

RESUMEN La estomatitis subprótesis es una de las lesiones más frecuentes encontradas en la consulta de Estomatología. Es una enfermedad comúnmente asintomática, cuya génesis es multifactorial, y tiene una alta prevalencia en pacientes portadores de prótesis removibles. Predecir su aparición resultaría muy oportuno pues permitiría alcanzar beneficios económicos y para la salud del individuo. Por ello, es importante desarrollar un modelo predictivo del riesgo a padecer estomatitis subprótesis. Se realizó este estudio en los pacientes que acudieron a la consulta de prótesis de la Clínica Estomatológica «Victoria de Santa Clara¼. Dicha investigación se caracterizó por la obtención de un modelo predictivo de la enfermedad. Los principales factores predictivos de la enfermedad fueron: la higiene bucal deficiente y la mala calidad de las prótesis. Se confeccionó una ecuación logística y se obtuvo un modelo predictivo con el propósito de conocer los pacientes con más probabilidades de padecer dicha enfermedad.

ABSTRACT Subprosthesis stomatitis is one of the most frequent lesions found in a dental consultation. It is a commonly asymptomatic disease, whose origin is multifactorial, and has a high prevalence in patients with removable prostheses. Predicting its appearance would be very timely as it would allow reaching economic benefits and benefits for individual's health. Therefore, it is important to develop a predictive model of the risk of suffering from subprosthesis stomatitis. This study was carried out on patients who came to the prosthesis consultation at "Victoria de Santa Clara" Dental Clinic. It was characterized by the elaboration of a predictive model of the disease. Poor oral hygiene and poor quality of the prosthesis were the main predictive factors of the disease. A logistic equation was made and a predictive model was obtained in order to know the patients with more probabilities of suffering from this disease.

Correlation of feline immunodeficiency virus status and the severity of feline chronic gingivostomatitis / Correlação do status sorológico para FIV e a gravidade da gengivoestomatite crônica felina

Feline chronic gingivostomatitis (FCGS) is a challenge for the veterinary practitioner since its etiology and treatments are still undefined. The present paper investigated the role of the feline immunodeficiency virus (FIV) in the severity of the FCGS. Oral mucosal biopsies obtained from 19 cats with FCGS were divided into two groups according to their FIV serology status. Later, the clinical lesion score was correlated with the histopathological grade of FCGS lesions and the degree of immunostaining in both groups. Most of the animals had significant histological changes; however, no correlation with FIV immunostaining intensity was observed. It was concluded that the presence of FIV infection or the animal's seropositivity status does not seem to interfere with the severity of clinical signs nor the degree of histopathological changes when compared to the seronegative group.(AU)

A gengivoestomatite crônica felina (FCGS) é um desafio para o veterinário, uma vez que a sua etiologia e tratamentos permanecem indefinidos. O presente trabalho investigou o papel do vírus da imunodeficiência felina (FIV) na gravidade do FCGS. Biópsias da mucosa oral de 19 gatos com FCGS foram divididas em dois grupos de acordo com o status sorológico de FIV. Mais tarde, o escore de lesão clínica foi correlacionado com o grau histopatológico das lesões FCGS e o grau de imunocoloração em ambos os grupos. A maioria dos animais apresentou alterações histológicas significativas, porém não foi observada correlação com a intensidade de imunocoloração para FIV. Concluiu-se que a presença de infecção por FIV ou o estado soropositivo dos animais não parece interferir com a gravidade dos sinais clínicos nem com o grau de alterações histopatológicas quando comparado ao grupo soronegativo.(AU)

Estomatitis Urémica como Complicación Oral de Insuficiencia Renal Crónica: Reporte de Caso y Revisión de la Literatura / Uremic Stomatitis as an Oral Complication of Chronic Renal Failure: Case Report and Literature Review

RESUMEN: La Estomatitis Urémica es una lesión oral poco frecuente que se presenta generalmente en pacientes con insuficiencia renal crónica avanzada o no tratada. A continuación, se reporta un caso clínico de un paciente masculino de 22 años de edad que acude a un servicio de urgencia con la presencia de placas blanquecinas indoloras en piso de boca, cara interna de mejilla, y lengua. Las probables causas, presentaciones clínicas, y manejo odontológico son discutidos.

ABSTRACT: Uremic stomatitis is a rare oral lesion that usually occurs in patients with advanced or untreated chronic renal failure. Here we report a case of a 22-year-old male patient who comes to an emergency department with the presence of painless whitish plaques on the floor of the mouth, internal cheek face, and tongue. Probable causes, clinical presentations, and dental management are discussed.

Restoration of an Upper Lip Affected by Necrotizing Ulcerative Stomatitis Using Bilateral Cheek Advancement with a Crescentic Perialar Excision

Necrotizing ulcerative stomatitis (NUS) refers to ulceration of the oral mucosa that precedes rapid orofacial soft- and hard-tissue destruction. NUS on the upper lip is considered a reconstructive challenge because of the functional importance and complex multidimensional structure of the facial units that are involved, and is most commonly found in developing countries. Therefore, few studies have been conducted on NUS. Moreover, reconstruction options vary from local regional flaps to free-tissue transfers. We report a very interesting case in which we performed regional flap surgery using bilateral cheek advancement in a patient with NUS. A 75-year-old woman with a history of diabetes mellitus and hypertension, but no other immunological diseases, presented with skin necrosis on the upper lip. At presentation, necrotic tissue covered the upper lip and philtrum, but it had not invaded the nose or lower lip. After debridement of the necrotic tissue, approximately 70% of the upper lip was missing. We therefore designed a bilateral cheek advancement and rotation flap, in which the flap was sutured in 3 layers. There was no need to perform additional procedures, as the flap healed well and showed no other complications or recurrence. The patient exhibited good voluntary muscle control and oral competence while eating and drinking, and she was also very satisfied with the cosmetic results. Thus, regional flap surgery using a simple advancement flap may result in good recovery of both functional and aesthetic units in patients with NUS.

Manifestaciones de la cavidad bucal por infección del virus de la inmunodeficiencia humana: reporte de caso clínico / Oral manifestations of the HIV virus: report of a clinical case

Las manifestaciones orales por la infección del virus de la inmunode-ficiencia humana son en ocasiones el primer signo de la enfermedad yen muchos casos un indicador de la progresión de la infección hacia elsíndrome de inmunodeficiencia adquirida. Las ulceraciones indoloras,diferentes tipos de gingivitis agresivas y la leucoplasia vellosa, se desarrollan muy fácilmente en individuos cuyo sistema inmunológico está comprometido, como el de los pacientes que sufren del virus deinmunodeficiencia adquirida.

Oral manifestations caused by the human immunodefi ciency virusare often the fi rst indication that the person is infected and oftenan indicator of its progression into AIDS. Painless ulcers, assortedtypes of aggressive gingivitis, and hairy leukoplakia develop easilyin individuals whose immune system is compromised, such as thoseinfected with HIV.

Clinical diagnosis and treatment of necrotizing ulcerative gingivitis in the orthodontic patient: a case report / Diagnóstico clínico y tratamiento de la gingivitis ulcerativa necrotizante en el paciente ortodóntico: reporte de un caso

Abstract: Introduction: about 0.1 percent of the population suffers from necrotizing ulcerative gingivitis, a disease of rapid progression and acute manifestation, which may progress to necrotizing ulcerative periodontitis and eventually to bone sequestration and loss of gingival tissue. Case report: A 21-year-old female patient undergoing orthodontic treatment for six months, diagnosed with necrotizing ulcerative gingivitis due to acute pain in the gingival tissue, spontaneous bleeding, halitosis and abundant plaque. The treatment was conservative and effective, obtaining total remission of the lesion after seven days and three months of postoperative follow-up. Conclusion: Today there are no epidemiological or clinical reports that support the relationship of necrotizing ulcerative gingivitis and orthodontic treatment. Prevention is critical to the success of the treatment, which is why the dentist should recognize the clinical features of necrotizing ulcerative gingivitis to raise awareness of its risks in the orthodontic patient.

Resumen: Introducción: alrededor del 0.1 por ciento de la población padece de gingivitis ulcerativa necrotizante, una enfermedad de progresión rápida y de presentación aguda que puede progresar a periodontitis ulcerativa necrotizante llegando a desarrollarse secuestros óseos y la pérdida de tejido gingival. Reporte del caso: Paciente femenino de 21 años de edad bajo seis meses de tratamiento ortodóntico, quien fue diagnosticada con gingivitis ulcerativa necrosante, debido a dolor agudo en el tejido gingival, sangrado espontáneo, halitosis y abundante placa bacteriana. El tratamiento fue llevado a cabo de manera conservadora y efectiva, obteniendo la remisión total de la lesión al término de siete días y los tres meses de seguimiento postoperatorio. Conclusión: Hoy en día no existen reportes epidemiológicos ni clínicos que sustenten la relación de la gingivitis ulcerativa necrotizante y el tratamiento ortodóntico. La prevención es decisiva para el éxito del tratamiento, es por ello que el odontólogo debe conocer las características clínicas de la gingivitis ulcerativa necrotizante para hacer conciencia en el paciente ortodóntico.

Effective Management of Acute Necrotizing Ulcerative Gingivitis with Proper Diagnosis and Immediate Treatment

Necrotizing periodontal diseases, especially acute necrotizing ulcerative gingivitis (ANUG), it should be noted, occur abruptly and progress rapidly, eventually causing severe soft-tissue and alveolar bone loss. This report presents the cases of two ANUG patients and provides a brief treatment protocol for easy and effective clinical management. After proper diagnosis, sequential treatment with cessation of mechanical brushing, along with a prescription of systemic antibiotics and chlorhexidine as a mouth rinse, scaling, root planing, and supportive periodontal therapy, was utilized. In all cases discussed in this report, there was marked improvement in a few days. ANUG, though an uncommon disease, can be efficiently managed with proper diagnosis and immediate treatment.

Periodontite agressiva avançada localizada, combinada com gengivite ulcerativa necrosante: dez anos de acompanhamento de um tratamento multidisciplinar / Severe localized aggressive periodontitis combined with necrotizing ulcerative gingivitis: a 10-year follow-up of a multidisciplinary treatment

Este relato de caso descreve o tratamento de um caso de periodontite agressiva avançada localizada, combinada com gengivite ulcerativa necrosante. A paciente apresentava migração patológica dos incisivos superiores com inclinação para vestibular, que exigiu uma abordagem multidisciplinar. Após a conclusão do tratamento periodontal, a terapia ortodôntica foi realizada. O tratamento desta paciente vem sendo conduzido com sucesso ao longo dos últimos dez anos.

Epidemiologia e distribuição de lesões extrarrenais de uremia em 161 cães / Epidemiology and distribution of extrarenal lesions of uremia in 161 dogs

Com o objetivo de determinar a epidemiologia e as características morfológicas, incluindo a localização anatômica, das lesões extrarrenais de uremia, bem como determinar as principais lesões do sistema urinário associadas à ocorrência de uremia, foram revisados os protocolos de necropsias de cães realizadas no Laboratório de Patologia Veterinária da Universidade Federal de Santa Maria de janeiro de 1996 a dezembro de 2012 (17 anos). Nesse período foram necropsiados 4.201 cães, sendo que 161 (3,8%) apresentaram lesões extrarrenais de uremia. Em 134 cães (83,2%) foram descritos sinais clínicos associados à uremia. As lesões extrarrenais mais frequentes, em ordem decrescente, foram: gastrite ulcerativa e hemorrágica (56,5%), mineralização de tecidos moles (55,9%), edema pulmonar (47,2%), estomatite e/ou glossite ulcerativa (30,4%), endocardite/trombose atrial e aórtica (28,6%), hiperplasia das paratireoides (9,3%), osteodistrofia fibrosa (8,1%), anemia (6,2%), laringite ulcerativa (5%), enterite ulcerativa/hemorrágica (3,7%), esofagite fibrinonecrótica (1,9%) e pericardite fibrinosa (1.9%). Na maioria dos casos as lesões extrarrenais de uremia foram decorrentes de azotemia prolongada por lesões renais graves, sendo as mais prevalentes a nefrite intersticial e a glomerulonefrite.

The aim of this study was to determine the epidemiology and the morphological characteristics (including the anatomic localization) of the extrarenal uremic lesions, as well as to describe the main lesions of the urinary system associated with the occurrence of uremia, through analysis of the protocols of necropsies performed in dogs from January 1996 to December 2012 (17 years) at the Laboratório de Patologia Veterinária of the Universidade Federal de Santa Maria. A total of 4,201 dogs were necropsied and 161 (3.8%) had extrarenal uremic lesions. In 134 dogs (83.2%) clinical signs associated with uremia were reported. The extrarenal lesions more often observed, in descending order of prevalence, were ulcerative and hemorrhagic gastritis (56.5%), soft-tissue mineralization (55.9%), pulmonary edema (47.2%), ulcerative stomatitis and/or glossitis (30.4%), endocarditis/atrial and aortic thrombosis (28.6%), parathyroid hyperplasia (9.3%), fibrous osteodystrophy (8.1%), anemia (6.2%), ulcerative laryngitis (5%), ulcerative and hemorrhagic enteritis (3.7%), fibrinonecrotic esophagitis (1.9%), and fibrinous pericarditis (1.9%). In most of the cases, the extrarenal lesions of uremia were due to prolonged azotemia secondary to severe renal lesions, such as interstitial nephritis and glomerulonephritis (the most prevalent ones).

Two cases of an atypical presentation of necrotizing stomatitis

PURPOSE: The purpose of this report was to describe the clinical and microbiological characteristics of two rare cases of necrotizing stomatitis, and the outcomes of a non-invasive treatment protocol applied in both cases. METHODS: We report two cases of necrotizing stomatitis in a rare location in the hard palate of a 40-year-old woman and a 28-year-old man. Neither had a relevant medical history and both presented with highly painful ulceration in the palate and gingival margin that was accompanied by suppuration and necrosis. 3% hydrogen peroxide was applied to the lesions using sterile swabs, and antibiotic and anti-inflammatory treatment was prescribed to both patients in addition to two daily oral rinses of 0.2% chlorhexidine. RESULTS: In both cases, radiological examination ruled out bone involvement, and exfoliative cytology revealed a large inflammatory component and the presence of forms compatible with fusobacteria and spirochetes. There was a rapid response to treatment and a major improvement was observed after 48 hours, with almost complete resolution of the ulcerated lesions and detachment of necrotic areas with partial decapitation of gingival papillae. CONCLUSIONS: Necrotizing periodontal lesions can hinder periodontal probing and the mechanical removal of plaque in some cases due to the extreme pain suffered by the patients. We present a non-invasive treatment approach that can manage these situations effectively.

Extranodal Nasal NK/T-Cell Lymphoma: A Rare Oral Presentation and FASN, CD44 and GLUT-1 Expression

Extranodal natural killer (NK)/T-cell lymphoma is an aggressive malignant tumor with distinctive clinicopathological features, characterized by vascular invasion and destruction, prominent necrosis, cytotoxic lymphocyte phenotype and a strong association with Epstein-Barr virus. Here is reported an extranodal nasal NK/T-cell lymphoma case, involving the maxillary sinus, floor of the orbit, and interestingly extending to the oral cavity through the alveolar bone and buccal mucosa, preserving the palate, leading to a primary misdiagnosis of aggressive periodontal disease. Moreover, this work investigated for the first time the immunohistochemical expression of fatty acid synthase (FASN) and glucose transporter 1 (GLUT-1) proteins in this neoplasia. FASN showed strong cytoplasmatic expression in the neoplastic cells, whereas GLUT-1 and CD44 were negative. These findings suggest that the expression of FASN and the loss of CD44 might be involved in the pathogenesis of the extranodal nasal NK/T-cell lymphoma, and that GLUT-1 may not participate in the survival adaptation of the tumor cells to the hypoxic environment. Further studies with larger series are required to confirm these initial results.

O linfoma de células natural killers (NK)/T extranodal é um tumor maligno agressivo com características clinicopatológicas distintas, caracterizadas por invasão e destruição vasculares, necrose proeminente, fenótipo linfocítico citotóxico e uma forte associação com o vírus Epstein-Barr. Relatamos aqui um caso de linfoma de células NK/T nasal extranodal, envolvendo o seio maxilar, assoalho de órbita, e interessantemente estendendo-se para a cavidade oral através do osso alveolar e mucosa vestibular, preservando o palato, levando a um diagnóstico inicial equivocado de doença periodontal agressiva. Ainda, nós investigamos pela primeira vez a expressão imunoistoquímica das proteínas Fatty acid sinthase (FASN) e glucose transporter 1 (GLUT-1) nesta neoplasia. FASN revelou uma forte expressão citoplasmática nas células neoplásicas, enquanto GLUT-1 e CD44 foram negativas. Estes achados sugerem que a expressão de FASN e a perda de CD44 podem estar envolvidas na patogênese do linfoma de células NK/T nasal extranodal, e que GLUT-1 não deve participar da adaptação das células tumorais ao ambiente de hipóxia. Estudos adicionais com séries maiores são necessários para confirmar nossos resultados iniciais.

Gingivitis ulceronecrotizante. Recuperación de las papilas después del tratamiento: informe de casos / Necrotizing ulcerative gingivitis. Papillae recovering after treatment: case reports

Objetivo: describir la cicatrización gingival en tres pacientes con gingivitis ulceronecrotizante y revisar el tratmiento propuesto en la literatura, para evaluar los factores que influyen en la respuesta gingival. Caso clínico: en los casos presentados, se priorizaron el diagnóstico y el tratamiento precoz de la lesión, a fin de ayudar a mantener y recuperar los tejidos interdentales. Conclusión: es importante preservar los tejidos gingivales interdentales, no solamente desde el punto de vista estético, sino también desde lo funcional. El diagnóstico y tratamiento temprano de las lesiones, seguidos de una intervención efectiva, ayudarán a reducir la destrucción del tejido interdentario. El mantenimiento a largo plazo es fundamental para garantizar la salud y evitar la recidiva

Reporte de una posible correlación entre la gingivitis ulceronecrotizante y la mononucleosis / Report a possible correlation between necrotizing ulcerative gingivitis and mononucleosis

Necrotizing ulcerative gingivitis is a relatively uncommon periodontal disease, characterized by ulceration, necrosis, pain and gingival bleeding. Factors often related to its occurrence include stress and systemic viral infections, such as those caused by cytomegalovirus and Epstein-Barr virus type 1, the latter being also considered the causative agent of infectious mononucleosis. This article aims to describe a clinical case of a female patient who presented with necrotizing ulcerative gingivitis associated with a clinical picture of infectious mononucleosis, as well as to review the literature concerning a possible correlation between these pathologies. This patient presented to our health care facility with necrotizing ulcerative gingivitis accompanied by lymphadenopathy, fever and prostration, after laboratory tests, Epstein-Barr virus type 1 infection was confirmed, as well as the co-occurrence of pathologies: necrotizing ulcerative gingivitis and infectious mononucleosis. Symptom remission in both disorders also occurred concomitantly, after instruction in plaque control measures and palliative medication for control of systemic symptoms. Therefore, although there is no scientific validation of an association between these two pathologies, it is imperative that all diagnostic alternatives be considered and investigated, in order to establish the therapeutic approach most appropriate to the patient(AU

La gingivitis ulcerativa necrótica es una enfermedad periodontal no común caracterizada por ulceración, necrosis, dolor y sangrado gingival. Los factores a menudo relacionados con su ocurrencia incluyen el estrés y las infecciones virales sistémicas como aquellas causadas por Cytomegalovirus y el virus Epstein-Barr tipo 1, donde este último es el agente causal de la mononuclerosis infecciosa. El objetivo de este trabajo fue describir el caso clínico de una mujer con gingivitis ulcerativa necrótica asociada a un cuadro clínico de mononucleosis infecciosa, así como hacer una revisión de la literatura concerniente a una posible correlación entre estas enfermedades. Esta paciente se presentó con una gingivitis ulcerativa necrótica acompañada de linfadenopatía, fiebre y postración después de las pruebas de laboratorio, donde se confirmó una infección por Epstein-Barr tipo 1 así como la ocurrencia conjunta de gingivitis ulcerativa necrótica y mononucleosis infecciosa. También se produjo una remisión concomitante de los síntomas en ambos trastornos después de la instrucción en medidas para el control de placas y una medicación paliativa para el control de los síntomas sistémicos. Por lo tanto, aunque no existió una validación científica de una asociación entre estas dos entidades, es imperativo que se consideren e investiguen todas las alternativas diagnósticas para establecer el enfoque terapéutico más apropiado para el paciente(AU)

Comparison of oral manifestations with CD4 count in HIV-infected patients.

Aim and Objective: This study was carried out with the primary aim of correlating oral changes and general changes of HIV-infected patients with their CD4 count. Materials and Methods: 124 patients were selected, and after taking their informed consent, they were subjected to detailed history taking and thorough clinical examination. Specific oral lesions and general physical changes were recorded. Every patient was subjected to laboratory investigation for CD4 count. All these findings were tabulated. The clinical observation and laboratory findings were subjected to critical analysis and correlated. Statistical test, i.e. Student's " t" test, was applied and objective conclusions were drawn. Result: Out of 124 patients, 40 had oral candidiasis, 6 had oral hairy leukoplakia, 12 had periodontal disease, 20 had xerostomia, 30 had melanin pigmentation, while 4 had HSV2, and atypical ulceration. Out of 40 patients with oral candidiasis, 28 patients had CD4 count <200 (group A), 10 patients were in group, B (CD4 count 200-500 cell/mm 3 ) and 2 patients in group C(CD4 >500 cell/mm 3 ). Oral hairy leukoplakia occurred in equal proportions in group A and B. These periodontal diseases were more commonly in group B; xerostomia and melanin pigmentation was equally seen in group A and B. Conclusion: Oral candidiasis, oral hairy leukoplakia, linear gingival erythema, necrotizing ulcerative gingivitis, and necrotizing ulcerative periodontitis are specific oral indicators which will definitely suggest to the dental surgeon that the disease is running a rapid downhill course and due to this the oral physician is in a position to raise a suspicion and alert the general physician regarding the declining immune status of patient.

Conduta de tratamento de gengivite ulcerativa necrosante (GUN) em serviço de urgência / Treatment for necrotizing ulcerative gingivitis(NUG)in an urgency service - a case report

A gengivite ulcerativa necrosante é uma doença periodontal que apresenta curso clínico agudo, de inicio rápido, caracterizada por dor, desconforto e mau hálito do paciente, sendo observadas ulcerações na papila interdental e gengiva marginal. Por este motivo, os pacientes com esta condiçào podem buscar serviços de urgencia odontológica em Unidades de Saude ou Instituicoes de Ensino, cabendo ao cirurgiâo dentista/plantonista adotar a conduta clínica adequada para minimizar a sintomatologia. 0 objetivo deste relato de caso clínico foi expor e discutir alguns aspectos da conduta de tratamento desta enfermidade.

Periodontite ulcerativa necrosante: relato de caso, diagnóstico, tratamento e um ano de acompanhamento / Necrotizing ulcerative periodontitis: case report-diagnoses, treatment and one year follow-up

As doenças periodontais necrosantes (DPNs) são as formas mais graves de doença periodontal causada pela placa bacteriana. Nas DPNs, as bactérias são mais agressivas do que as observadas em uma periodontite crônica e, quando associadas a uma saúde debilitada do indivíduo, causam um dano ainda maior ao periodonto. Por outro lado, as DPNs têm uma prevalência extremamente baixa na população, o que faz com que casos diagnosticados dessa doença devam ser documentados e divulgados, para contribuir para o conhecimento da mesma pelos profissionais de saúde. Dessa forma, o objetivo do presente trabalho é ilustrar, através de um caso clínico, as características clínicas de uma das DPNs e as etapas clínicas do tratamento correspondente. Um indivíduo com 22 anos de idade compareceu à clínica odontológica para atendimento de urgência, apresentando como sinais e sintomas: febre, sangramento espontâneo, supuração, dor e halitose extrema. Clinicamente, apresentava na gengiva interproximal de diversos dentes ulcerações e necrose com ampla extensão, necrose e exposição de osso alveolar interproximal, e pobre higiene bucal. Radiograficamente, constataram-se perdas ósseas horizontais. O tratamento foi baseado no diagnóstico de periodontite ulcerativa necrosante. Noventa dias após o início do tratamento, foi realizada reavaliação periodontal, observando-se ausência de bolsas periodontais e permanência dos defeitos anatômicos produzidos pela inflamação. Após um ano do início do tratamento, observaram-se focos de placa bacteriana e cálculo supragengival, porém não foram observadas bolsas periodontais e sangramento à sondagem.

Necrotizing Periodontal Diseases (NPDs) are the most severe inflammatory periodontal disorders caused by plaque bacteria. In the NPDs the bacteria are more aggressive than those observed in chronic periodontitis and when combined with a poor health of the patient causing a further damage to the periodontium. On the other hand, the prevalence of NPD is extremely low in the population, however, diagnosed cases of this disease should be documented and disseminated to contribute to the knowledge by health professionals. The objective of this paper is to illustrate through a clinical case the clinical characteristics of one of the NPDs and the stages of its treatment. A 22-year-old patient attended in the dental clinic for urgent care presenting the following signs and symptoms: fever, spontaneous bleeding, suppuration, pain and extreme halitosis. Clinically, there were ulcerations and extensive necrosis in the interproximal gingiva of several teeth, exposure of interproximal alveolar bone and poor oral hygiene. In the radiograph it was found horizontal bone loss. The treatment realized was based on the diagnostic of Necrotizing Ulcerative Periodontitis. Ninety days after the treatment beginning it was performed a periodontal reevaluation, and there was absence of periodontal pockets, and anatomic defects produced by the inflammation were observed. After one year of the treatment beginning it was observed plaque and supragengival calculus, but pockets and bleeding on probing were not observed.