Evaluation of the Microbiological Profile of Alveolar Residual Screws and Cleft-Adjacent Teeth in Individuals With Complete Unilateral Fissures.

OBJECTIVE: To evaluate the microbiota profile of residual alveolar slits and teeth adjacent to the cleft in fissured individuals. DESIGNS: This study used a cross-sectional design. PARTICIPANTS: Twenty individuals, aged 14 to 24 years, who had a residual fissure in the maxillary alveolar ridge region were selected. MAIN OUTCOME MEASURES: Three sites per individual were selected for microbiological collection (the site of the residual cleft and the 2 nearest teeth). The samples were analyzed using the Checkerboard DNA-DNA hybridization technique for 73 species of bacteria. RESULTS: All the species analyzed were found in the 2 niches (slits and teeth). The bacterial species present in the largest number in the residual cracks were Prevotella melaninogenica, Prevotella nigrescens, and Streptococcus mitis. With regard to the bacterial profiles in the mesial and distal faces, the most prevalent species were P nigrescens, Veillonella parvula, and Fusobacterium nucleatum sp vicentii. The analysis of all the collected samples demonstrated very similar profiles for the mesial and distal faces, with these 2 sites even presenting the same species in greater frequencies. Higher counts of 20 bacterial species (Wilcoxon test) were observed in the dental niche, in relation to the fissure, particularly, P nigrescens, V parvula, F nucleatum sp vicentii, and Neisseria mucosa. CONCLUSION: Some species were significantly more prevalent in the residual alveolar fissures and in adjacent teeth. The comparison between the profiles of the 2 niches demonstrated large differences in the most frequent species in the teeth, and no qualitative differences with regard to specific pathogens.

Fibrina Rica en Plaquetas y Leucocitos en el tratamiento de defectos intra-óseos: Revisión Narrativa / Leucocyte and Platelet Rich Fibrin in the treatment of intra-bony defects. Narrative Review

RESUMEN: Diferentes técnicas quirúrgicas periodontales han surgido a lo largo del tiempo con el objetivo de lograr una regeneración periodontal y mejorar su predictibilidad. La Fibrina Rica en Plaquetas y Leucocitos (L-PRF) se ha posicionado como una alternativa para cumplir este objetivo, debido a que no requiere anticoagulantes en su preparación y muestra liberación sostenida de factores de crecimiento durante por lo menos 7 días. El objetivo de esta revisión narrativa es describir la evidencia disponible sobre el uso de L-PRF en defectos intra-óseos. Se realizó una búsqueda en las bases de datos MEDLINE y Cochrane Library, exploración manual y páginas web. De un total de 494 artículos recuperados, fueron seleccionados 12 publicaciones para esta revisión. Los resultados sugieren que L-PRF muestra beneficios al ser utilizada en el tratamiento periodontal regenerativo de defectos intra-óseos. Sin embargo, son necesarios ensayos clínicos con diseño metodológico estandarizado que permitan comparar L-PRF con biomateriales habitualmente empleados en el tratamiento de estos defectos.

ABSTRACT: Periodontal surgical techniques have emerged over time with the aim of achieving periodontal regeneration and improving its predictability. Leukocyte and Platelet-Rich Fibrin (L-PRF) has been proposed as an alternative, for not requiring anticoagulants in its preparation and for performing sustained release of growth factors for at least 7 days. The aim of this narrative review is to describe the available evidence on the use of L-PRF in periodontal intra-bony defects. An electronic and hand search was conducted in MEDLINE and Cochrane Library databases. Of 494 papers retrieved, 12 were selected for this review. The results suggest that even if L-PRF shows benefits when used in regenerative periodontal treatment of intra-bony defects, clinical trials with standardized methodological design are necessary to compare L-PRF with biomaterials usually used in these defects.

Implantes de diâmetro reduzido (< 3 mm) para reabilitação oral de espaços edêntulos atrésicos em pacientes adolescentes ­ relato de caso com acompanhamento de um ano / Reduced diameter dental implants (< 3 mm) for oral rehabilitation of edentulous atresic spaces

Reabilitações estéticas em áreas anteriores com limitação de espaço mesiodistal tornam-se um desafio. Entretanto, implantes dentários de diâmetros reduzidos (< 3 mm) têm sido utilizados nestes casos. Este relato de caso apresenta a utilização de dois implantes de diâmetro reduzido (2,8 mm) e conexão morse no tratamento de agenesia de laterais superiores. Após planejamento cirúrgico-protético, os implantes foram restaurados imediatamente e acompanhados por um período de um ano. Dentro das limitações deste trabalho, sugere-se que implantes de diâmetro reduzido podem ser utilizados com sucesso para a restauração imediata de laterais superiores, oferecendo um bom perfil de emergência protética e estética para dentes estreitos.

Esthetic rehabilitations in the anterior zones with limited mesiodistal spaces are a great challenge. However, dental implants with reduced diameters (< 3 mm) with a morse taper connection have been used in cases os lateral incisor agenesis. After a detailed surgical-prosthetic planning, the dental implants were immediately restored and followed-up for one year. Within the limits of this paper, it can be suggested that narrower dental implantes can be used with success in such situations, providing a good emergence profile and esthetics to for narrower dental spaces.

Sobretratamento: uma alternativa eficaz na terapia com implante em elemento unitário com reabsorção radicular em paciente portador de periodontite crônica: relato de caso / Overtreatment: an effective alternative in implant therapy on a single tooth with root resorption in patient with chronic periodontitis: a case report

Paciente do sexo masculino, 54 anos de idade, leucoderma, compareceu a uma clínica privada para tratamento odontológico. Na anamnese, verificou-se tratar de um paciente saudável sistemicamente; os exames clínico e radiográfico demonstraram reabsorção dos terços apical e médio da raiz do dente 21. A opção de tratamento foi a realização da extração do elemento dentário e realização de implante imediato com carga tardia, utilizando-se o dente do próprio paciente como provisório fixado aos dentes vizinhos. O paciente foi informado sobre os detalhes das fases pré-, trans- e pós-cirúrgica, e autorizou a execução do tratamento e da documentação fotográfica com fins de publicação e divulgação. A utilização de periótomo foi necessária para uma exodontia atraumática. Após remoção atraumática da raiz, e com o osso alveolar remanescente preservado, optou-se por realizar a instalação imediata do implante (Neodent, Curitiba/PR, Brasil), com formato cônico e encaixe cone morse. O espaço alvéolo- implante foi preenchido com Bio-Oss®; removeu-se do palato um enxerto conjuntivo subeptelial, rotacionado para vestibular, e fez-se a obliteração do alvéolo — nessa fase, é importante garantir a imobilidade do enxerto, para sua revascularização. Passou-se, então, à fase protética do provisório, utilizando a coroa do elemento extraído como provisório e estabelecendo um pôntico, afixado com resina composta nos elementos 11 e 22. Assim, após a etapa de provisório utilizando o pôntico reembasado com resina composta, começou-se a confecção da coroa protética final. Após acompanhamento de três anos do caso, foi possível concluir que a associação das técnicas obteve resultados estéticos previsíveis e satisfatórios para a prevenção da saúde peri-implantar, conforme planejado...

A male, 54‐year‐old, Caucasian patient attended a private clinic for dental treatment. Hismedical history revealed a systemically healthy patient. Clinical and radiographic examination revealed resorption in the apical and middle thirds of tooth 21 root. A treatment option was to perform extraction of tooth 21 and implant placement with late loading, using patient's own tooth as a provisional secured to adjacent teeth. The patient was made aware of the details before, during and after surgery, and authorized the implementation of treatment and photographic documentation for purposes of publication and dissemination. The use of Periotome was required for atraumatic extraction. After atraumatic removal of the root, andwith the remaining alveolar bone being preserved, we chose to perform immediate implantplacement (Neodent‐Curitiba‐PR, Brazil). The implant was of conical shape and of the MorseTaper type. The alveolar‐implant space was filled with Bio‐Oss®, subepithelial connective graftwas harvested from the palate, with buccal rotation, and alveolar obliteration was carried out. At this stage, it is important to ensure graft immobility for vascularization. Subsequently, the prosthetic phase was carried out with the crown of the extracted tooth used as a temporary tooth, establishing a provisional pontic secured to between teeth 11 and 22 with compositeresin. Accordingly, after the temporary tooth phase with a pontic secured with composite resin, the final prosthetic crown was manufactured. After a three‐year follow‐up, we conclude that the combination of techniques yielded predictable and satisfactory outcomes for themaintenance of peri‐implant health, as planned ...