Lymphoma is a malignant disease with two forms: Hodgkin’s lymphoma (HL) and non-Hodgkin’s lymphoma (NHL). Non-Hodgkin’s lymphoma is diagnosed in extranodal sites in 40% of cases, and the head and neck region is the second most affected, with an incidence of 11–33%, while HL has a very low incidence in extranodal sites (1–4%). The aim of this study was to identify the oral manifestations of lymphoma through a systematic literature review, which we conducted using the PubMed, Lilacs, Embase, and Cochrane Library databases. We found 1456 articles, from which we selected 73. Among the intraoral findings, the most frequent were ulcerations, pain, swelling, and tooth mobility, while the extraoral findings included facial asymmetry and cervical, submandibular, and submental lymphadenopathy. Among the few studies reporting imaging findings, the most cited lesions included hypodense lesions with diffuse boundaries, bone resorptions, and tooth displacements. The publications reviewed highlight gaps in the areas of early detection, diagnosis, and proper treatment.
RESUMO O titânio comercialmente puro (Ti cp) é o principal material usado na fabricação dos implantes dentários osseointegráveis. Para melhorar os índices de sucesso do tratamento odontológico e reduzir o tempo de osseointegração dos implantes, foram desenvolvidas várias metodologias de tratamento da superfície dos implantes. Para caracterizar as morfologias das superfícies dos implantes são usadas as análises no microscópio eletrônico de varredura (MEV), rugosidade, molhabilidade, identificação de possíveis contaminantes, ensaios in-vitro de culturas de células e in-vivo com animais. Entre as técnicas citadas, as mais usadas são as análises no MEV, as medidas dos parâmetros da rugosidade e da molhabilidade. Alguns trabalhos disponíveis na literatura sugerem a caracterização somente do valor de Ra sem apresentar uma explicação para a escolha deste parâmetro. No presente trabalho é feita a proposta de um modelo matemático para quantificar a relação entre os vários parâmetros da rugosidade 3D (Ra, Rq, Rz, Rms, Pico, Vale, PV, R3z e Smax) com a molhabilidade e a energia de superfície do Ti cp com dois tamanhos de grão (micrométricos e sub-micrométricos) e submetidos ao tratamento com ácido. Os resultados mostraram que para o nível de confiança de 95%, as propriedades das superfícies do Ti cp tratados com ácido são mais influenciadas pelos parâmetros de rugosidade Ra e Rms.
The biological sealing (BS) around implants is a dominant factor to determine the long-term success of peri-implant health. There are several features of the BS around implants in common with the soft tissue attached to teeth, such as the presence of crevicular fluid, acquired pellicle, epithelium; otherwise, the quality of the BS around implants is weaker compared with the junctional epithelium of natural teeth. Then, this article aimed to describe three cases report showing the presence of a BS (cuticle-crevice fluid-acquired pellicle) around the fixed crowns on dental implants in the anterior zone, through photographic analysis. It was used a Nikon 8100 camera with a 105 mm macro lens and a Macro Ring circular flash. A photographic profile examination was made always showing the clinical case and, specifically, the focal point in the crown-gingival tissue (prosthesis boundary and peri-implant tissue), highlighting the anatomical gingiva on the ceramic prosthetic crown at an angle between 140 to 160 degrees. Although cases 1 and 2 had 1-year follow-up and case 3 around 4 years, the common findings for all treatments done were: (i) oral rehabilitation with crowns on dental implants; (ii) patients satisfied with the esthetic and functional result; (iii) stability of the soft tissue around the crowns; (iv) all the patients had a good oral hygiene; (v) presence of a thin membrane associated with the acquire pellicle, similar to an annular cuticle, which we named cuticle-acquired pellicle complex or tertiary cuticle or prosthetic-implant cuticle. This complex (cuticle-crevicular fluid-acquired pellicle) is suggested to be the responsible by the BS on dental implants. Moreover, the cuticle (epithelial part in the peri-implant sulcus), although similar to teeth, may be considered a tertiary pellicle due to be found on ceramic crowns on dental implants, differently of the primary and secondary pellicle. Whitin the limitation of these three cases reports, the BS was reported and can be introduced the new concept of the “cuticle-crevicular fluid-acquired pellicle complex” or “prosthetic-implant cuticle”. Keywords: Dental implants; single crown; biological sealing; biofilms; pellicle; acquired pellicle; saliva; gingival crevicular fluid.
Background : Obtaining and maintaining implant stability are prerequisites for the clinical success of implant prostheses. Since primary stability is a direct consequence of bone-implant contact, it depends on bone density, surgical technique, and macroscopic and microscopic morphology of the implant used. Primary stability can be either measured by insertion torque or resonance frequency analysis, but no relation between these two is clearly described.Aim/Hypothesis : The objective of this study was to evaluate the statistical correlation of primary stability through resonance frequency analysis (RFA) and manual torque of insertion through literature review and case series study.Material and Methods : This study was conducted on a post-graduate clinic, where fourteen dental implants had their manual torque and RFA measured using a manual torque device during installation. RFA measured the Implant stability quotient (ISQ) using a smartpeg after installation in 5 different positions (buccal, lingual, occlusal, mesial and distal). All of the fourteen implants had the same conical connection and were placed in the mandible or maxilla. The mean ISQ measurements and manual torque were submitted to statistical analysis to determine a possible correlation.Results : We evaluated 13 implants, 9 implants performed in female patients and 4 male patients, 5 in maxilla and 8 in mandible. For the study, internal conical connection dental implants were used. In order to verify the correlation between TORQUE and ISQ, the statistical software R was used through the Pearson correlation coefficient correlation coefficient. After statistical analysis it was evidenced that there is a strong positive correlation between torque and ISQ, with a value of 0.8. Conclusion and Clinical Implications :The study shows that torque and ISQ, in disagreement with the current literature, are correlatable measurements for primary stability. Hence, since this is important factor for dental implant success, the authors suggests that ISQ may be used in combination with torque to certify primary stability.
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