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Sialometaplasia necrotizante: reporte de una lesión autolimitante de apariencia maligna
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Loureiro, Caio Cesar de Souza

; Souza Júnior, Alberi José Thomas de

; Dutra, Mateus José

; Anbinder, Ana Lia

Odontoestomatología

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2024, Volume 26 N. 44 elocation e420

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

Resumo Relatamos o caso de um homem de 45 anos com úlcera no palato há 10 dias. O paciente era usuário de álcool e tinha história de uso de cocaína há 17 anos, interrompida há 7 anos. Foi realizada biópsia incisional e os cortes histológicos revelaram extensa área ulcerada recoberta por membrana fibrinopurulenta, com pequenos ninhos de células escamosas que apresentavam citoplasma eosinofílico, núcleos evidentes e por vezes múltiplos, atipias celulares leves e diversas figuras mitóticas. As características clínicas e histológicas indicaram o diagnóstico de Sialometaplasia Necrotizante e o paciente foi submetido a acompanhamento clínico. Na terceira semana de acompanhamento, a remissão da lesão tornou-se evidente. Ressaltamos a importância do exame histopatológico e imunohistoquímico no correto diagnóstico.

Abstract We report a case of a 45-year-old man with a palate ulcer for 10 days. The patient was an alcohol user and had a history of using cocaine for 17 years, discontinued for the last 7 years. An incisional biopsy was performed, and histological sections revealed an extensive ulcerated area covered by a fibrinopurulent membrane, with small nests of squamous cells in the connective tissue. These squamous cells exhibited eosinophilic cytoplasm, evident and sometimes multiple nuclei, mild cellular atypia, and several mitotic figures. The clinical and histological characteristics indicated a Necrotizing Sialometaplasia diagnosis, and the patient underwent clinical follow-up. In the third week of follow-up, remission of the lesion became apparent. We emphasize the importance of histopathological and immunohistochemical examination in the correct diagnosis.

Resumen Presentamos el caso de un hombre de 45 años con úlcera en paladar de 10 días de evolución. El paciente era consumidor de alcohol y tenía antecedentes de consumo de cocaína desde hacía 17 años, discontinuada durante los últimos 7 años. Se realizó biopsia incisional y los cortes histológicos revelaron una extensa área ulcerada recubierta por una membrana fibrinopurulenta, con pequeños nidos de células escamosas que presentaban citoplasma eosinófilo, núcleos evidentes y en ocasiones múltiples, leve atipia celular y varias figuras mitóticas. Las características clínicas e histológicas indicaron el diagnostico de Sialometaplasia Necrotizante y el paciente fue sometido a seguimiento clínico. En la tercera semana de seguimiento se hizo evidente la remisión de la lesión. Destacamos la importancia del examen histopatológico e inmunohistoquímico en el correcto diagnóstico.

https://doi.org/10.22592/ode2024n44e420

Clinicopathologic analysis of oral dermoid and epidermoid cysts: a Brazilian multicenter study cysts
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CUNHA, John Lennon Silva

; ANDRADE, Allany de Oliveira

; CAVALCANTE, Israel Leal

; BARROS, Caio César da Silva

; SOUSA NETO, Sebastião Silvério de

; BARROS, Joyce Magalhães de

; LEITE, Larissa Sandy da Silva

; FÉLIX, Fernanda Aragão

; TURATTI, Eveline

; CARVALHO, Francisco Samuel Rodrigues

; SOUSA, Sílvia Ferreira de

; MENDONÇA, Elismauro Francisco de

; ANBINDER, Ana Lia

; PIRES, Fábio Ramoa

; ALVES, Pollianna Muniz

; NONAKA, Cassiano Francisco Weege

; ANDRADE, Bruno Augusto Benevenuto de

Brazilian Oral Research

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2023, Volume 37 elocation e107

Abstract: En | Text: En | PDF: En

Abstract Dermoid cysts (DCs) and epidermoid cysts (ECs) are uncommon developmental cysts affecting the oral cavity. This study aims to evaluate patients with oral DCs and ECs and their demographic and clinicopathologic features. A retrospective descriptive cross-sectional study was performed. A total of 105,077 biopsy records of oral and maxillofacial lesions from seven Brazilian oral pathology centers were analyzed. All cases diagnosed as oral DCs and ECs were reviewed, and clinical, demographic, and histopathological data were collected. The series comprised 32 DCs (31.4%) and 70 ECs (68.6%). Most of the DCs occurred on the floor of the mouth (n = 14; 45.2%) of women (n = 17; 53.1%) with a mean age of 34.6 ± 21.6 years. All DCs were lined partially or entirely by stratified squamous epithelium (100%). Chronic inflammatory cells, melanin pigmentation, multinucleated giant cell reaction, and cholesterol clefts were observed in the fibrous capsule . Most of the ECs affected the labial mucosa (n = 20; 31.7%) of men (n = 39; 56.5%) with a mean age of 48.0±19.8 years. Microscopically, most ECs (n = 68; 97.1%) were lined entirely by stratified squamous epithelium. Two cysts (2.9%) showed areas of respiratory metaplasia. Chronic inflammatory cells, melanin pigmentation, multinucleated giant cell reaction, and cholesterol clefts were also observed in the fibrous capsule. Conservative surgical excision was the treatment of choice in all cases. Oral DCs and ECs are uncommon and often clinically misdiagnosed lesions. Clinicians should consider DCs and ECs in the differential diagnosis of soft tissue lesions in the oral cavity, mainly located on the floor of the mouth and labial mucosa. (DCs (ECs cavity features crosssectional cross sectional performed 105077 105 077 105,07 analyzed reviewed clinical collected 3 31.4% 314 31 4 (31.4% 7 68.6%. 686 68.6% 68 6 (68.6%) n 14 45.2% 452 45 2 17 53.1% 531 53 1 346 34 34. 216 21 21. years 100%. 100 100% (100%) cells pigmentation reaction 20 31.7% 317 39 56.5% 565 56 5 480198 48 0 19 8 48.0±19. Microscopically 97.1% 971 97 2.9% 29 9 (2.9% metaplasia 10507 10 07 105,0 31.4 (31.4 68.6 (68.6% 45.2 53.1 (100% 31.7 56.5 48019 48.0±19 97.1 2.9 (2.9 1050 105, 31. (31. 68. (68.6 45. 53. (100 56. 4801 48.0±1 97. 2. (2. (31 (68. (10 480 48.0± (2 (3 (68 (1 48.0 ( (6 48.

https://doi.org/10.1590/1807-3107bor-2023.vol37.0107

Contribution of public oral pathology services to the diagnosis of oral and oropharyngeal cancer in Brazil
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LOUREDO, Brendo Vinicius Rodrigues

; CURADO, Maria Paula

; PENAFORT, Paulo Victor Mendes

; DE ARRUDA, José Alcides Almeida

; ABREU, Lucas Guimarães

; MESQUITA, Ricardo Alves

; PINTO-JÚNIOR, Décio dos Santos

; ABRAHÃO, Aline Corrêa

; ANDRADE, Bruno Augusto Benevenuto de

; AGOSTINI, Michelle

; MORAES, Renata Mendonça

; ANBINDER, Ana Lia

; DOURADO, Pedro Henrique Silva

; SANTOS, Teresa Cristina Ribeiro Bartholomeu dos

; PIRES, Fábio Ramoa

; BORDIGNON, Natalia Cristina Trentin

; GONDAK, Rogério Oliveira

; DE OLIVEIRA, Marcia Gaiger

; CARRARD, Vinicius Coelho

; MARTINS, Manoela Domingues

; SOUSA-NETO, Sebastião Silvério

; ARANTES, Diego Antônio Costa

; MENDONÇA, Elismauro Francisco

; CIESLAK-SANCHES, Silvia Roberta

; ANTUNES, Daniella Moraes

; AMARAL-SILVA, Gleyson Kleber do

; MANIERI, Patricia Rubia

; RAMALHO, Luciana Maria Pedreira

; DOS SANTOS, Jean Nunes

; LEONEL, Augusto César Leal da Silva

; PEREZ, Danyel Elias da Cruz

; VERHEUL, Hannah Carmem Carlos Ribeiro Silva

; BARROSO, Keila Martha Amorim

; RODRIGUES, Flávia Luiza Santos

; GONZAGA, Amanda Katarinny Goes

; FERNANDES, Romana Renery

; DE SOUZA, Lélia Batista

; SOUZA, Lucas Lacerda de

; PONTES, Flávia Sirotheau Corrêa

; PONTES, Hélder Antônio Rebelo

; SILVA, Caroline Alfaia

; CÂMARA, Jeconias

; LIBÓRIO-KIMURA, Tatiana Nayara

; SANTOS-SILVA, Alan Roger

; LOPES, Márcio Ajudarte

; ALMEIDA, Oslei Paes de

; ROMAÑACH, Mário José

; VARGAS, Pablo Agustin

Brazilian Oral Research

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2023, Volume 37 elocation e126

Abstract: En | Text: En | PDF: En

Abstract This study aimed to evaluate the contribution of oral and maxillofacial pathology laboratories (OMPLs) in Brazilian public universities to the diagnosis of lip, oral cavity, and oropharyngeal squamous cell carcinoma (SCC). A cross-sectional study was performed using biopsy records from a consortium of sixteen public OMPLs from all regions of Brazil (North, Northeast, Central-West, Southeast, and South). Clinical and demographic data of patients diagnosed with lip, oral cavity, and oropharyngeal SCC between 2010 and 2019 were collected from the patients’ histopathological records. Of the 120,010 oral and maxillofacial biopsies (2010-2019), 6.9% (8,321 cases) were diagnosed as lip (0.8%, 951 cases), oral cavity (4.9%, 5,971 cases), and oropharyngeal (1.2%, 1,399 cases) SCCs. Most cases were from Brazil’s Southeast (64.5%), where six of the OMPLs analyzed are located. The predominant profile of patients with lip and oral cavity SCC was Caucasian men, with a mean age over 60 years, low schooling level, and a previous history of heavy tobacco consumption. In the oropharyngeal group, the majority were non-Caucasian men, with a mean age under 60 years, had a low education level, and were former/current tobacco and alcohol users. According to data from the Brazilian National Cancer Institute, approximately 9.9% of the total lip, oral cavity, and oropharyngeal SCCs reported over the last decade in Brazil may have been diagnosed at the OMPLs included in the current study. Therefore, this data confirms the contribution of public OMPLs with respect to the important diagnostic support they provide to the oral healthcare services extended by the Brazilian Public Health System. (OMPLs SCC. . (SCC) crosssectional cross sectional North, North (North Northeast CentralWest, CentralWest Central West, West Central-West South. South South) 201 120010 120 010 120,01 20102019, 20102019 , (2010-2019) 69 6 9 6.9 8,321 8321 8 321 (8,32 0.8%, 08 0 (0.8% 95 cases, 4.9%, 49 4 (4.9% 5971 5 971 5,97 1.2%, 12 1 2 (1.2% 1399 399 1,39 Brazils s 64.5%, 645 64.5% 64 (64.5%) located men years level consumption group nonCaucasian non formercurrent former users Institute 99 9.9 Therefore System (SCC 20 12001 01 120,0 2010201 (2010-2019 6. 8,32 832 32 (8,3 0.8% (0.8 4.9% (4.9 597 97 5,9 1.2% (1.2 139 39 1,3 64.5 (64.5% 9. 1200 120, 201020 (2010-201 8,3 83 3 (8, 0.8 (0. 4.9 (4. 59 5, 1.2 (1. 13 1, 64. (64.5 20102 (2010-20 8, (8 0. (0 4. (4 1. (1 (64. (2010-2 ( (64 (2010- (6 (2010 (201 (20 (2

https://doi.org/10.1590/1807-3107bor-2023.vol37.0126

Proliferative verrucous leukoplakia mimicking oral lichen planus: case report and literature review
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Dutra, Mateus José

; Alves Santos, Kamilla

; Adorno-Farias, Daniela

; Anbinder, Ana Lia

; Kaminagakura, Estela

Odontoestomatología

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2023, Volume 25 N. 42 elocation e419

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

Resumo Este relato apresenta os aspectos clínicos, microscópicos e imuno-histoquímicos de um caso de leucoplasia verrucosa proliferativa (LPV) mimetizando líquen plano oral (LPO) em uma paciente do sexo feminino de 66 anos. Também revisamos a literatura relatando casos de LPV mimetizando LPO, onde encontramos maior prevalência em mulheres que não consomem tabaco ou álcool, com manifestação inicial de áreas liquenoides por volta dos 59 anos, sendo estabelecido o diagnóstico de LPV em média 6 anos depois, enquanto a transformação maligna ocorreu em 8 dos 22 casos em média 3,7 anos após o diagnóstico final de LPV. Ressaltamos a necessidade de acompanhamento rigoroso de qualquer paciente que apresente lesões brancas da mucosa oral, devendo ser investigadas lesões clinicamente e microscopicamente compatíveis com reações liquenóides ou LPO e diferenciadas da LPV, que tem pior prognóstico

Abstract This report presents the clinical, microscopic and immunohistochemical aspects of a case of proliferative verrucous leukoplakia (PVL) mimicking oral lichen planus (OLP) in a 66-year-old woman. We also review the literature reporting cases of PVL mimicking OLP, where we found a higher prevalence in women who do not consume tobacco or alcohol. The initial manifestation of lichenoid areas was around the age of 59, with the diagnosis of PVL being established on average 6 years later, while malignant transformation occurred in 8 of the 22 cases at an average of 3.7 years after the final diagnosis of PVL. We emphasize the need for a close follow-up of any patient presenting white lesions of the oral mucosa. Lesions that are clinically and microscopically compatible with lichenoid reactions or OLP must be investigated and differentiated from PVL, which has a worse prognosis.

Resumen Este reporte presenta los aspectos clínicos, microscópicos e inmunohistoquímicos de un caso de leucoplasia verrugosa proliferativa (LVP) simulando liquen plano oral (LPO) en una paciente de 66 años. También revisamos la literatura reportando casos de LVP simulando LPO, donde encontramos una mayor prevalencia en mujeres que no consumen tabaco ni alcohol, con una manifestación inicial de áreas liquenoides alrededor de los 59 años, estableciéndose el diagnóstico de LVP en promedio 6 años después, mientras que la transformación maligna ocurrió en 8 de los 22 casos en un promedio de 3,7 años después del diagnóstico final de LVP. Resaltamos la necesidad de un seguimiento estrecho de todo paciente que presente lesiones blanquecinas de la mucosa oral, que las lesiones clínica y microscópicamente compatibles con reacciones liquenoides o LPO deben ser investigadas y diferenciadas de la LVP, que tienen peor pronóstico.

https://doi.org/10.22592/ode2023n42e419

Jaw osteosarcoma and pregnancy: a rare coexistence
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Santos, Thaís Aguiar

; Américo, Márcia Gimenes

; Priante, Antonio Vitor Martins

; Oliveira, Maria Fernanda de

; Anbinder, Ana Lia

Autopsy and Case Reports

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2022, Volume 12 elocation e2021359

Abstract: En | Text: En | PDF: En

ABSTRACT Osteosarcoma of the jaw represents less than 1% of all head and neck malignancies. This malignancy in pregnant women occurs in one per 1000 deliveries. We report a case of a 29-year-old woman, in the 33rd week of gestation, who presented with an expansive tumor destroying the maxillary alveolar bone, histologically composed of pleomorphic, round, spindle, or epithelioid cells and osteoid/chondroid matrix. Upon final diagnosis of osteosarcoma, the lesion was excised. To the best of our knowledge, only 10 cases of jaw osteosarcoma in pregnant women have been reported to date in the English language literature. The use of ancillary examinations, malignancy diagnosis, and cancer treatment can be challenging during pregnancy. Knowledge about jaw osteosarcoma in pregnancy can increase healthcare providers’ awareness, avoid delays and misdiagnosis and potentially improve maternal and neonatal outcomes.

https://doi.org/10.4322/acr.2021.359

Agreement, correlation, and kinetics of the alveolar bone-loss measurement methodologies in a ligature-induced periodontitis animal model
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Vargas-Sanchez, Paula Katherine

; Moro, Marcella Goetz

; Santos, Fabio André dos

; Anbinder, Ana Lia

; Kreich, Eliane

; Moraes, Renata Mendonça

; Padilha, Lauryellen

; Kusiak, Caroline

; Scomparin, Dionizia Xavier

; Franco, Gilson Cesar Nobre

Journal of Applied Oral Science

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oct 2017, Volume 25 N. 5 Pages 490 - 497

Abstract: En | Text: En | PDF: En

Abstract Periodontal research involves the use of animal models to better understand the biological processes of periodontal diseases and the potential of new or existing therapies. Currently, ligature-induced periodontitis in rats is the main model used in periodontal research, in this model, alveolar bone loss (ABL) is the main parameter evaluated by radiographic, morphometric, and histological techniques. Interestingly, although these methodologies are widely used, it is not totally clarified neither the kinetics of ABL over the induction time nor the agreement degree (repeatability and reproducibility) of these techniques. Objective: To characterize ABL kinetics at 0, 3, 7, 15, 30, and 60 days after ABL induction by ligature and to evaluate the intra- (repeatability) and inter-examiner (reproducibility) agreement and the correlation among the radiographic, morphometric, and histological methodologies. Material and Methods: 60 male Wistar rats with induced ABL were randomly divided into 6 experimental groups (n = 10 animals/group). After 0, 3, 7, 15, 30, and 60 days, the animals were euthanized and their hemimandibles were removed for ABL determination using radiographic, morphometric and histological techniques. Results: Radiographic and morphometric/linear techniques allowed the detection of statistically significant ABL on the third day, while histological and morphometric/area techniques could only detect ABL after the seventh day (ANOVA/Tukey, p<0.05). After the fifteenth day, except for histological analysis, the ABL was stabilized. Concerning the agreement of the methodologies, Bland Altman's test (intra and inter-examiner evaluations) showed no difference among the measurements (p>0.05). In addition, high correlations (Pearson's test, r2>0.9, p<0.05) were observed. Conclusion: The results indicated that the minimum time for ABL induction could vary from 3 to 7 days, according to the chosen analysis methodology. Agreement and correlation data support the comparison of results between studies with same induction time.

https://doi.org/10.1590/1678-7757-2016-0517 1448 downloads

Chondroid Tenosynovial Giant Cell Tumor of the Temporomandibular Joint: A Rare Case Report
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Anbinder, Ana Lia

; Geraldo, Barbara Maria Corrêa

; Guimarães Filho, Rubens

; Pereira, Débora Lima

; Almeida, Oslei Paes de

; Carvalho, Yasmin Rodarte

Brazilian Dental Journal

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sep 2017, Volume 28 N. 5 Pages 647 - 652

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Tumor de células gigantes tenossinovial do tipo difuso (TCGT-d) ou sinovite vilonodular pigmentada (SVP) é uma lesão localmente agressiva que afeta principalmente as articulações dos ossos longos. Tumor de células gigantes tenossinovial condroide (TCGTC) ou SVP com metaplasia condroide é um tipo distinto e raro de tumor sinovial que tem a predileção pela articulação temporomandibular (ATM). Nós relatamos um caso raro de TCGTC da ATM, inicialmente diagnosticado, equivocadamente, como disfunção temporomandibular (DTM). Uma mulher de 51 anos foi encaminhada ao cirurgião com a queixa principal de dor na ATM por 5 anos, e uma história de tratamento de DTM sem sucesso. O exame extrabucal revelou discreto aumento de volume preauricular e movimentação mandibular restrita. A radiografia panorâmica e a tomografia computadorizada evidenciaram destruição da fossa mandibular e côndilo. Histologicamente, o tumor era composto por células mononucleares grandes, com amplo citoplasma eosinofílico e núcleo sulcado, pequenas células histiocitoides, células multinucleadas semelhantes a osteoclastos, pigmentação acastanhada e áreas de metaplasia condroide. As características morfológicas e imuno-histoquímicas levaram ao diagnóstico final de TCGTC. A raridade desta lesão pode estar associada ao seu não reconhecimento, sendo casos diagnosticados como condroblastoma, condromatose sinovial ou condrossarcoma. A paciente recebeu reconstrução imediata e recorrência foi observada 22 meses após a intervenção inicial. TCGT-d e TCGTC da ATM podem apresentar sintomas similares à DTM, mas os clínicos devem diferenciar ambas as lesões por meio do exame clínico completo, exames de imagem e, quando necessário, avaliação histopatológica.

Abstract Tenosynovial giant cell tumor of diffuse type (TGCT-d) or pigmented villonodular synovitis (PVNS) is a locally aggressive lesion that mostly affects the joints of long bones. Chondroid tenosynovial giant cell tumor (CTGCT) or PVNS with chondroid metaplasia is a rare distinct subset of synovial tumors that has a predilection for the TMJ. We report a rare case of CTGCT in the TMJ, initially misdiagnosed as temporomandibular disorder (TMD). A 51-year-old woman was referred to the surgeon with the chief complaint of TMJ pain for 5 years and a past history of an unsuccessful TMD treatment. Extraoral examination revealed discrete preauricular swelling and restricted mandibular range of motion. Panoramic radiograph and computerized tomography showed destruction of the mandibular fossa and condyle. Histologically, the tumor was composed by large mononuclear cells with prominent eosinophilic cytoplasm and grooved nuclei, small histiocytoid cells, osteoclast-like multinucleated cells, brown pigmentation and areas of chondroid metaplasia. Morphological and immunohistochemical characteristics lead to the final diagnosis of CTGCT. The rarity of CTGCT could be attributed to the lack of recognition of this lesion, with cases diagnosed as chondroblastomas, synovial chodromatosis and chondrosarcoma. The patient received immediate reconstruction and recurrence was found 22 months after initial intervention. TGCT-d and CTGCT of the TMJ can present similar symptoms to TMD, but clinicians must distinguish both lesions by complete examination, imaging and, when necessary, histopathologic evaluation.

https://doi.org/10.1590/0103-6440201701371 2051 downloads

The role of Osterix protein in the pathogenesis of peripheral ossifying fibroma
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El ACHKAR, Vivian Narana Ribeiro

; MEDEIROS, Raphaella da Silveira

; LONGUE, Fernanda Gargano

; ANBINDER, Ana Lia

; KAMINAGAKURA, Estela

Brazilian Oral Research

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2017, Volume 31 elocation e53

Abstract: En | Text: En | PDF: En

Abstract Peripheral ossifying fibroma (POF) is a reactive lesion of oral tissues, associated with local factors such as trauma or presence of dental biofilm. POF treatment consists of curettage of the lesion combined with root scaling of adjacent teeth and/or removal of other sources of irritants. This study aimed to analyze the clinical and pathological features of POF and to investigate the immunoexpression of Osterix and STRO-1 proteins. Data such as age, gender, and size were obtained from 30 cases of POF. Microscopic features were assessed by conventional light microscopy using hematoxylin-eosin staining and immunohistochemical markers, and by polarized light microscopy using Picrosirius red staining. The age range was 11-70 years and 70% of the patients were female. Moreover, the size of POF varied from 0.2 to 5.0 cm; in 43.33% of the cases, the mineralized content consisted exclusively of bony trabeculae. The immunohistochemical analysis showed nuclear staining for Osterix in 63% and for STRO-1 in 20% of the cases. Mature collagen fibers were observed in mineralized tissue in 76.67% of the cases. The clinical and microscopic features observed were in agreement with those described in the literature. Osterix was overexpressed, while STRO-1 was poorly expressed. Osterix was expressed particularly in cells entrapped in and around mineralized tissue, indicating the presence of a stimulus that triggers the differentiation of these cells into osteoblasts or cementoblasts, i.e., cells that produce mineralized tissue. Based on our results, Osterix may play a role in the pathogenesis of POF.

https://doi.org/10.1590/1807-3107bor-2017.vol31.0053 1216 downloads

Evaluation of dentists’ knowledge of the use of oral exfoliative cytology in clinical practice
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Silva, Weber Adorno

; Lima, Ana Paula de

; Vasconcellos, Luana Marotta Reis De

; Anbinder, Ana Lia

Brazilian Oral Research

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2014, Volume 28 N. 1 Pages 1 - 7

Abstract: En | Text: En | PDF: En

Oral exfoliative cytology (EC) is a rapid and practical complementary test that can be used in the diagnosis of various diseases. The objectives of this study were to assess dentists’ knowledge of EC and to disseminate information on the technique. The study included 240 dentists from the city of Anápolis (Goiás, Brazil) who answered a questionnaire regarding demographic data and data relating to EC and who then received information on the technique. The data revealed that 26.92% of the dentists did not know about EC. Among those who reported knowledge of EC, 33.91% did not know the procedures for performing the technique, and 85.38% had no experience with EC. In addition, 54.09% of the answers regarding the instrument used to collect the material and 56.82% of the answers concerning suitable fixatives were inappropriate. Although 73.02% of the dentists adequately identified the pathologies for which EC is recommended, it was concluded that the respondents had poor knowledge of EC. There is a need to increase dentists’ awareness of this subject and of EC’s use in diagnostic practices.

https://doi.org/10.1590/1807-3107BOR-2014.vol28.0010 3040 downloads

10.

Influence of the association between simvastatin and demineralized bovine bone matrix on bone repair in rats
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Lima, Carlos Eugênio Villaboim de Castro

; Calixto, Jimmy Cavalcanti

; Anbinder, Ana Lia

Brazilian Oral Research

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feb 2011, Volume 25 N. 1 Pages 42 - 48

Abstract: En | Text: En | PDF: En

Simvastatin, a drug used to lower blood cholesterol, has been reported to have an anabolic effect on bone. The purpose of this study was to evaluate the influence of simvastatin and demineralized bovine bone matrix (DBBM) on the repair of rat calvarial defects. Defects of 5 mm were created in 64 rats, divided into four groups: no local treatment (control); treatment with DBBM (DBBM); treatment with a combination of simvastatin solution (2.2 mg/50 μl) and DBBM (DBBMSIM-1); and treatment with simvastatin solution (0.5 mg/50 μl) and DBBM (DBBMSIM-2). Animals were sacrificed on postoperative day 30 or 60, after which the calvariae were X-rayed and prepared for histomorphometric evaluation. The data were submitted to statistical analysis (p < 0.05). X-rays revealed that, on postoperative day 30, animals treated with a lower dose of simvastatin presented the lowest bone density, whereas on postoperative day 60 the use of simvastatin, regardless of the dose, resulted in lower density than that observed in control and DBBM group samples. Histomorphometric analysis revealed that, on postoperative day 30, both DBBM and DBBMSIM-1 had a negative impact on bone formation. On postoperative day 60, none of the combinations tested impaired bone repair. These results showed that the association between DBBM and simvastatin had a negative impact on bone repair.

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11.

The influence of ovariectomy, simvastatin and sodium alendronate on alveolar bone in rats
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Anbinder, Ana Lia

; Prado, Fernanda de Almeida

; Prado, Marcela de Almeida

; Balducci, Ivan

; Rocha, Rosilene Fernandes da

Brazilian Oral Research

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sep 2007, Volume 21 N. 3 Pages 247 - 252

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Os bisfosfonatos são empregados atualmente para o tratamento de várias doenças caracterizadas pelo aumento da reabsorção óssea, como a osteoporose. As estatinas são amplamente utilizadas para redução de níveis elevados de colesterol e estudos recentes têm revelado sua ação anabólica no osso. O objetivo deste trabalho foi avaliar a influência da deficiência estrogênica e dos tratamentos com sinvastatina ou alendronato sódico no osso alveolar em ratas. Cinqüenta e quatro ratas sofreram ovariectomia (OVX) ou cirurgia simulada ("sham"). Um mês após, os animais passaram a receber diariamente, via oral, 25 mg/kg de sinvastatina (SIN), 2 mg/kg de alendronato (ALN) ou água (controle). Trinta e cinco dias depois do início do tratamento os animais foram sacrificados, as hemimandíbulas esquerdas removidas e radiografadas em aparelho de raios X digital. Foi calculada a densidade radiográfica em tons de cinza da área de osso alveolar sob o primeiro molar mandibular e os valores foram submetidos a ANOVA, ao nível de 5%. Ratas ovariectomizadas ganharam mais peso (média ± desvio-padrão: 20,06 ± 6,68%) que as demais (12,13 ± 5,63%). Os valores de densidade radiográfica, em tons de cinza, foram menores nos animais do grupo OVX-água (183,49 ± 6,47), significantemente diferentes daqueles observados nos grupos que receberam alendronato ("sham"-ALN: 193,85 ± 3,81; OVX-ALN: 196,06 ± 5,11) e no grupo "sham"-água (193,66 ± 4,36). Outras comparações entre grupos não revelaram diferenças estatísticas. Concluiu-se que a ovariectomia reduziu a densidade óssea alveolar e que o tratamento com alendronato sódico foi eficiente para o tratamento desta situação.

Bisphosphonates are currently used in the treatment of many diseases involving increased bone resorption such as osteoporosis. Statins have been widely used for the treatment of hypercholesterolemia and recent studies have shown that these drugs are also capable of stimulating bone formation. The purpose of this study was to evaluate the influence of an estrogen deficient state and the effects of simvastatin and sodium alendronate therapies on alveolar bone in female rats. Fifty-four rats were either ovariectomized (OVX) or sham operated. A month later, the animals began to receive a daily dose of simvastatin (SIN - 25 mg/kg), sodium alendronate (ALN - 2 mg/kg) or water (control) orally. Thirty-five days after the beginning of the treatment, the rats were sacrificed and their left hemimandibles were removed and radiographed using digital X-ray equipment. The alveolar radiographic density under the first molar was determined with gray-level scaling and the values were submitted to analysis of variance (a = 5%). Ovariectomized rats gained more weight (mean ± standard deviation: 20.06 ± 6.68%) than did the sham operated animals (12.13 ± 5.63%). Alveolar radiographic density values, expressed as gray levels, were lowest in the OVX-water group (183.49 ± 6.47), and differed significantly from those observed for the groups receiving alendronate (sham-ALN: 193.85 ± 3.81; OVX-ALN: 196.06 ± 5.11) and from those of the sham-water group (193.66 ± 4.36). Other comparisons between groups did not show significant differences. It was concluded that the ovariectomy reduced alveolar bone density and that alendronate was efficient for the treatment of this condition.

3244 downloads Cited 4 times in SciELO

12.

Estrogen deficiency and periodontal condition in rats: a radiographic and macroscopic study
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Anbinder, Ana Lia

; Prado, Marcela de Almeida

; Spalding, Marianne

; Balducci, Ivan

; Carvalho, Yasmin Rodarte

; Rocha, Rosilene Fernandes da

Brazilian Dental Journal

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2006, Volume 17 N. 3 Pages 201 - 207

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O objetivo deste trabalho foi avaliar a influência da ausência de hormônios ovarianos induzida por ovariectomia como fator de risco para a doença periodontal em ratas. Quarenta ratas com idade de 90 dias foram submetidas a ovariectomia (OVX; n=20) ou cirurgia simulada (sham) (SHAM; n=20). Após 30 dias, ligaduras de algodão foram colocadas ao redor dos segundos molares superiores de 10 animais OVX e 10 animais SHAM. Cinco semanas após, todos os animais foram sacrificados. As ratas foram pesadas antes de todos os procedimentos cirúrgicos. As hemimaxilas esquerdas foram removidas e determinaram-se a porcentagem de suporte ósseo, através de radiografias, e a área de perda óssea alveolar, macroscopicamente, após maceração, com auxílio de programa computacional, além do grau de envolvimento de furca. Os dados foram submetidos à análise estatística por meio de ANOVA com nível de significância de 5%. No período avaliado, as ratas ovariectomizadas apresentaram maior ganho de peso que aquelas submetidas à cirurgia simulada (sham) (p<0.001). As ratas em que foi induzida periodontite apresentaram suporte ósseo estatisticamente menor e maior perda óssea alveolar e envolvimento de furca que as demais (p<0.001). Porém, não foram encontradas diferenças significantes entre os animais ovariectomizados e não-ovariectomizados (p>0.05). Com bases nos achados deste estudo, a deficiência de hormônios ovarianos não pôde ser considerada como fator de risco para a doença periodontal.

The purpose of this study was to evaluate the impact of ovariectomy-induced estrogen deficiency as a risk factor of periodontal disease in rats. Forty 90-day old female rats were either ovariectomized (OVX; n=20) or sham operated (SHAM; n=20). After 30 days, periodontitis was induced by placement of a cotton ligature around the upper second molars of 10 OVX and 10 SHAM animals. All animals were sacrificed 5 weeks later. Body weight was assessed before all surgical procedures. The left hemimaxillas were removed and the percentage of periodontal bone support was determined radiographically and buccal alveolar bone loss was determined macroscopically using an image-analysis software. Furcation involvement was also evaluated. Data were analyzed statistically by ANOVA at 5% significance level. Within the evaluated period, the ovariectomized rats gained more weight than the sham-operated animals (p<0.001). The animals in which periodontitis was induced had less bone support, greater alveolar bone loss and furcation involvement than those without ligature (p<0.001). However, there was no difference between ovariectomized and sham-operated animals (p>0.05). Based on the findings of this study, estrogen deficiency could not be considered as a risk factor for periodontal disease.

2976 downloads Cited 5 times in SciELO

13.

Influence of simvastatin on bone regeneration of tibial defects and blood cholesterol level in rats
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Anbinder, Ana Lia

; Junqueira, Juliana Campos

; Mancini, Maria Nadir G.

; Balducci, Ivan

; Rocha, Rosilene Fernandes da

; Carvalho, Yasmin Rodarte

Brazilian Dental Journal

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2006, Volume 17 N. 4 Pages 267 - 273

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Este estudo avaliou a influência da sinvastatina, administrada por via oral ou subcutânea, na reparação de defeitos ósseos em tíbia e nos níveis de colesterol sangüíneo, em ratos. Foram realizados defeitos cirúrgicos nas tíbias direitas de 40 ratos machos, distribuídos em 4 grupos (n=10), tomando-se como base duas vias de administração e o uso ou não de sinvastatina: injeção subcutânea de sinvastatina (7 mg/kg) (grupo AT) ou apenas do veículo de suspensão da droga (grupo AC), sobre a região do defeito, durante 5 dias; 20 mg/kg de sinvastatina (grupo BT) ou água filtrada (grupo BC) via oral, diariamente, durante todo o período de observação. Os animais foram sacrificados após 15 ou 30 dias, quando amostras sangüíneas foram colhidas para análise do nível de colesterol. As tíbias foram removidas e, após descalcificação e procedimentos laboratoriais de rotina, procedeu-se à análise histológica e histomorfométrica. Para avaliação estatística utilizou-se ANOVA com nível de significância de 5%. As análises histomorfométrica e histológica mostraram diferença entre os grupos apenas com relação ao período experimental (p<0,05), apresentando os melhores resultados os animais sacrificados em 30 dias (p<0,05). Quanto ao nível de colesterol sangüíneo, não houve diferença estatisticamente significante entre os grupos analisados (p>0,05). Concluiu-se que, nas condições utilizadas, a sinvastatina, administrada via oral ou subcutânea, não exerceu efeito estimulador sobre o reparo ósseo de defeitos experimentais em tíbias de ratos e não alterou os níveis de colesterol sangüíneo.

The purpose of this study was to evaluate the effects of simvastatin, by oral or subcutaneous administration, on tibial defects regeneration and blood cholesterol level in rats. A surgical defect was made on the right tibia of 40 male animals assigned to 4 groups (n=10), based on two routes of administration and on the use or not of simvastatin: subcutaneous injection of simvastatin (7 mg/kg) (group AT) or only the vehicle of drug suspension (group AC), above the defect area, for 5 days; and 20 mg/kg of simvastatin macerated on water (group BT) or only water (group BC), orally, daily, during the whole observation period. The animals were sacrificed after 15 or 30 days, when blood samples were analyzed to check plasma cholesterol levels. Tibiae were removed and, after decalcification and routine laboratorial processing, histological and histomorphometrical analyses were carried out. ANOVA was used for statistical analysis at 5% signficance level. The histological and histomorphometrical analyses showed significant differences only between the experimental periods (p<0.05). Animals sacrificed after 30 days showed better bone repair (p<0.05). There was no statistically significant difference (p>0.05) for blood cholesterol levels between the groups. In conclusion, simvastatin administration either orally or subcutaneously did not improve bone repair of experimental tibial defects and did not alter blood cholesterol levels in rats.

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14.

Cimentos endodônticos: análise morfológica imediata e após seis meses utilizando microscopia de força atômica
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VALERA, Marcia Carneiro

; ANBINDER, Ana Lia

; LEONARDO, Mário Roberto

; PARIZOTO, Nivaldo Antônio

; KLEINKE, Maurício Urban

Pesquisa Odontológica Brasileira

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sep 2000, Volume 14 N. 3 Pages 199 - 204

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O objetivo deste trabalho foi analisar a morfologia dos cimentos Sealapex, Apexit, Sealer 26 (cimentos a base de hidróxido de cálcio) e Ketac Endo (cimento de ionômero de vidro), através da microscopia de força atômica, verificando-se as características de suas partículas após a obturação dos canais radiculares e após um período de seis meses de contato com o plasma sanguíneo humano. Utilizaram-se 16 dentes unirradiculares humanos extraídos e incluídos em blocos de resina após o preparo biomecânico. As raízes foram divididas em quatro grupos de quatro raízes cada e os canais radiculares obturados pela técnica de condensação lateral passiva com os cimentos em estudo. Verificou-se que o cimento Apexit foi o que mais sofreu desintegração após seis meses de imersão em plasma sanguíneo humano, seguido pelo Ketac Endo e Sealapex. Dentre todos os cimentos estudados, o Sealer 26 mostrou-se o mais uniforme e com a menor desintegração.

The aim of this study was to analyze the high resolution morphological characteristics of Sealapex, Apexit, Sealer 26 (calcium hydroxide cements) and Ketac Endo (glass ionomer cement), using atomic force microscopy (AFM), immediately after root canal obturation and six months after it, keeping the roots stored in human blood plasma. The AFM evaluation used 16 single-rooted human teeth embedded in resin blocks after biomechanical preparation. The samples were divided into four groups (four roots each) and the passive lateral condensation filling technique was used in the obturation of the canals with the mentioned sealers. Apexit suffered the highest degree of disintegration after the six-month storage in human blood plasma, followed by Ketac Endo and Sealapex. Sealer 26 was the most uniform cement and suffered the least disintegration.

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