Aneurisma cerebral e cisto de aracnóide: a propósito de caso com hemorragia intracística

Relatamos um caso de aneurisma da bifurcação da artéria carótida interna, cuja ruptura se deu para dentro de cisto de aracnóide da fissura silviana. em revisão da literatura apenas 3 casos foram descritos. Discutimos ainda os aspectos clínicos atípicos do caso, as características dos achados cirúrgicos e uma correlação etiopatogênica entre as duas patologias.

Alterações palpebrais após a idade de 50 anos

OBJETIVO: Avaliar quantitativamente as mudanças da posição palpebral e as medidas da fenda palpebral de indivíduos acima dos 50 anos. MÉTODOS: Estudo observacional, tendo sido avaliados 325 indivíduos, com idade acima de 50 anos, segundo distância intercantal, largura e altura da fenda palpebral, ângulo palpebral externo e interno, distância entre o reflexo pupilar e a margem da pálpebra superior (distância reflexo-margem) e a área total da fenda palpebral. Utilizou-se filmadora Sony Lithium para obtenção das imagens digitais, com o indivíduo fixando um objeto a 1 metro de distância, sendo as imagens transferidas posteriormente para computador McIntosh G4 e processadas pelo programa NIH 1.58. Os dados foram submetidos à análise estatística. RESULTADOS: Os participantes apresentavam dermatocálase (96,5%), ptose do supercílio (60,8%), prolapso de gordura orbital (50,0%) ou ptose palpebral (39,1%). As alterações foram bilaterais em 68,8% dos indivíduos. A distância intercantal aumentou com a idade; a largura da fenda palpebral, a distância reflexo-margem e a medida do ângulo externo diminuíram nos mais idosos. As diferenças foram mais significativas quando os olhos foram estudados separadamente. CONCLUSÃO: A distância intercantal aumenta, ao passo que a largura da fenda palpebral, a distância reflexo-margem e a área total da fenda palpebral diminuem com o aumento da idade.

Evaluation of fermented milk containing probiotic on dental enamel and biofilm: In situ study

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Short Implant to Support Maxillary Restorations: Bone Stress Analysis Using Regular and Switching Platform

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Comparison of visual inspection, radiographic examination, laser fluorescence and their combinations on treatment decisions for occlusal surfaces

Purpose: To compare visual inspection (VI), radiographic examination (RX) and the laser fluorescence device DIAGNOdent (L), as well as their combinations in vitro regarding treatment decisions for occlusal surfaces. Methods: 72 extracted human permanent teeth (molars and premolars) were used. Treatment decisions were recorded by three calibrated examiners, and the options available were fissure sealant and conservative restoration. For validation of treatment decisions, the teeth were sectioned and examined in a stereomicroscope. Thereafter, dental slices were scanned and the images were edited to facilitate classification of existing carious lesions. Intra and inter-examiner reproducibility for the determination of treatment plans were calculated using Cohen's kappa test (95%-CI). Sensitivity, specificity, positive and negative predictive values, and the area under the ROC curve were also calculated. Results: VI and L provided on average the greatest intra- and inter-examiner reproducibility, respectively. Although the combination of diagnostic methods may decrease both intra- and inter examiners reproducibility, combination of VI, L and RX resulted in the greatest sensitivity, being statistically superior to RX and L. There was more inter-examiner agreement for the option of restorative treatment, while the use of sealants as a treatment option yielded the lowest values. Negative predictive values were numerically inferior to positive predictive values, indicating that the examiners preferred not to restore a carious tooth than to proceed operatively in an intact tooth. The combination of the three methods studied showed the best results in determining treatment plans for occlusal surfaces, when compared to the other types of exams. on the other hand, radiographic examination and laser fluorescence were less efficient when used alone.

Immediate reimplantation of primary teeth: a histological study in dogs

Reimplantation of primary teeth has been the subject of various clinical and histological studies, but very little is known about the effect of this treatment on primary teeth. The aim of the present study was to histologically evaluate the biological response of dog primary teeth after immediate reimplantation. Twelve dogs were divided into two groups according to postoperative time: 1 week and 3 weeks. Twenty-one upper and lower intermediate incisors were extracted and submitted to endodontic treatment, reimplantation and splinting. The 21 homologous teeth not submitted to treatment served as controls. The animals were killed after the respective experimental periods, and the obtained specimens were processed for histological analysis. Most dogs of the 1-week group exhibited the following alterations: gingival epithelium was inserted in the cemento-enamel junction, with a small number of chronic inflammatory cells being observed in the gingival corium; the periodontal ligament was partially reestablished, with a more expressive chronic inflammatory infiltrate being observed in the apical third; small root resorption was observed on the palatine/lingual side in the apical third. In contrast, in 3-week animals, gingival epithelial insertion was predominantly absent on the buccal side, and a moderate chronic inflammatory infiltrate was present; the periodontal ligament generally showed no bone-cementum reinsertion especially on the palatine/lingual side, with an expressive inflammatory infiltrate in the apical region, and large root resorption was mainly observed on the palatine and lingual sides. In conclusion, reimplantation causes histological alterations in the tooth and its supporting periodontal structures that suggest the impossibility of its maintenance.

In vitro evaluation of the influence of air abrasion on detection of occlusal caries lesions in primary teeth

Purpose: The purpose of this study was to assess the influence of cleaning pits and fissures with on aluminum oxide air abrasion system on the detection of occlusal caries in primary teeth using laser fluorescence (LF) and visual examination. Methods. The sample comprised 65 pit and fissure sites on extracted primary teeth suspected to be carious. The sites were submitted to 2 visual examinations (examiner JAR) and 2 LF readings (examiner TMV). Next, the occlusal surfaces were air-abraded and re-examined thereafter using both methods. The teeth were sectioned, and the histological analysis of the sites with a stereoscopic magnifying lens at X32 magnification was used as the gold standard Results. Cohen's kappa statistic for LF and visual examination were, respectively, 0.282/0.884 before and 0.896/0.905 after air abrasion. LF showed a sensitivity of 0.28 increasing to 0.49 and 0 specificity of 0.50 increasing to 0.92. Visual examination showed sensitivity of 0.78 and specificity of 0.73. Both increased after air abrasion. Conclusion: The findings suggest that cleaning pits and fissures with aluminum oxide air abrasion increased the accuracy of LF and visual examination for detection of occlusal caries in primary teeth.

Relationship between DIAGNOdent values and sealant penetration depth on occlusal fissures

The aim of this in vitro study was to evaluate the relationship between laser fluorescence values and sealant penetration depth on occlusal fissures. One hundred and sixty-six permanent molars were selected and divided into four groups, which were each treated using a different sealant (two clear and two opaque). The teeth were independently measured twice by two experienced dentists using two laser fluorescence devices-DIAGNOdent (LF and LFpen)-before and after sealing, and then thermoclycled. After measuring, the teeth were histologically prepared and assessed for caries extension. Digital photographs of the cut sealed sites were assessed, and the sealant penetration depth was measured. All 166 sites were measured by one of the examiners taking as limits the outer and inner surface of the sealant into the fissure. For each device (LF and LFpen) and each group, the difference between the values at baseline and after sealing was plotted against the sealant penetration depth and scatter plots were provided. It could be observed that most of the points were concentrated around the zero line, for both LF and LFpen in the four groups. In conclusion, there is no relation between changes in DIAGNOdent values and increasing of depth sealant penetration within the occlusal fissures.

Dens invaginatus type III: report of a case and 10-year radiographic follow-up

Aim the purpose of this article is to report the 10-year follow-up of a right mandibular central incisor with 'dens invaginatus' that was root filled.Summary 'Dens invaginatus ' is a rare malformation of teeth, probably resulting from an infolding of the dental papilla during tooth development. It has alternatively been called 'dens in dente' and 'dilated composite odontome'. Radiographic examination may clearly demonstrate this feature, although no signs may be recognized clinically. If no entrance to the invagination can be detected and there are no signs of pulp pathosis, then no treatment is required other than fissure sealing of the invagination. In deep invaginations, it is likely that root-canal treatment may be required. Occasionally, when the tooth has an immature root, apexification is necessary. Root-canal treatment of a right mandibular central incisor with 'dens invaginatus ' is described along with 10-year follow-up.Key learning pointsBoth clinical and radiographic examinations are necessary to determine morphological features of teeth before root-canal treatment.Sensibility testing to determine the pulp condition is critical prior to treatment.

Markiana nigripinnis (Perugia, 1891) as a putative member of the subfamily Stevardiinae (Characiformes: Characidae): spermatic evidence

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Bond strength and morphology of resin materials applied to the occlusal surface of primary molars

International Journal of Paediatric Dentistry 2012; 22: 435441 Background. Hydrophilic adhesives may be used as pit and fissure sealants (sealants), but there is concern about the ability of self-etching adhesives to bond sealants to enamel. Aim. To study the bond strength (BS) and morphology of adhesive systems used as sealants. Design. OptiBond FL, OptiBond All-in-One, combined OptiBond All-in-One + OptiBond FL adhesive, and Fluroshield were applied to the occlusal surfaces of 16 primary molars (n = 4). Teeth were stored in distilled water (24 h at 37 degrees C) and sectioned through the interface to obtain sticks (0.8 mm2) tested under a tensile load (0.5 mm/min). Failure modes were observed. Data were analysed by ANOVA and Tukeys tests (a = 5%). The morphology of 12 primary molars was examined in terms of the etching pattern and resin reproduction. Results. Differences in the BS were found (P = 0.001), with OptiBond FL showing the highest (36.84 +/- 5.7 MPa), Fluroshield (24.26 +/- 2.13 MPa) and OptiBond All-in-One (17.12 +/- 4.97 MPa) similar, and OptiBond All-in-One + OptiBond FL adhesive the lowest (9.8 +/- 2.94 MPA). OptiBond FL showed the best results in terms of morphology. Conclusion. Under the conditions of this study, OptiBond FL was the best material to be used for sealing.

Redescrição e osteologia de Bryconamericus exodon Eigenmann, 1907 (Ostariophysi, Characiformes, Characidae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Avaliação clínica de vinte e quatro meses do Fluroshield e do Vitremer utilizados como selante de fossas e fissuras

Avaliou-se o desempenho de dois materiais utilizados como selante oclusal (Fluroshield e Vitremer). Foram selados 46 pré-molares, superiores e/ou inferiores, sem sinais clínicos de lesões de cárie, sendo que 23 dentes foram selados com Vitremer e 23 com Fluroshield. Após seis, doze e vinte e quatro meses de acompanhamento, observou-se que o Vitremer apresentou uma retenção total de 91,30%, 91,30% e 82,60%, enquanto o Fluroshield apresentou 100% de retenção total nos três intervalos de tempo. Ambos os materiais impediram o desenvolvimento de lesões de cárie, independente de sua retenção e períodos avaliados.

Escolha de parceiros afetivos: influência das seqüelas de fissura labiopalatal

Adolescentes, fissurados ou não, se vêem diante de sensações novas perante si mesmos e em relação ao sexo oposto durante a busca de parceiros afetivos, estabelecendo critérios para essa seleção. Este estudo objetivou verificar critérios que adolescentes fissurados estabelecem para selecionar parceiros afetivos e se esses diferem dos utilizados pelos seus pares, não fissurados. Participaram, respondendo a um questionário, 74 adolescentes, de 14 a 21 anos, de ambos os sexos, divididos em dois Grupos: Fissurados (GF) e Não Fissurados (GNF). Os resultados sugerem que não há diferença significativa entre os grupos considerando as características que valorizam em si e no outro para a escolha do parceiro afetivo. Verificou-se que o GNF valorizou mais o rosto do que o GF, apresentando correlação estatisticamente significativa. Tais resultados permitiram concluir que a fissura interfere na visão de si mesmo ou do outro na busca por parceiros afetivos.

Muscular, functional and orthodontic changes in pre school children with enlarged adenoids and tonsils

Introduction: Hypertrophy of the adenoids and palatine tonsils is the second most frequent cause of upper respiratory obstruction and, consequently, mouth breathing in children. Prolonged mouth breathing leads to muscular and postural alterations which, in turn, cause dentosketetal changes. Objective: the aim of this study was to determine muscular, functional and dentoskeletal alterations in children aged 3-6 years. Materials and methods: Seventy-three children, including 44 with tonsil hypertrophy and 29 controls, were submitted to otorhinolaryngologic, speech pathologic and orthodontic assessment. Results: Otorhinolaryngologic evaluation revealed a higher incidence of nasal obstruction, snoring, mouth breathing, apneas, nocturnal hypersalivation, itchy nose, repeated tonsillitis and bruxism in children with tonsils hypertrophy. Speech pathologic assessment showed a higher incidence of open lip and lower tongue position, and of hypotonia of the upper and lower lips, tongue and buccinator muscle in these children, accompanied by important impairment in mastication and deglutition. Orthodontic evaluation demonstrated a higher incidence of lower mandible position in relation to the cranial base, a reduction in lower posterior facial height, transverse atresia of the palate, and a dolicofacial pattern. Conclusion: Postural and functional alterations anticipate dentoskeletal changes, except for the facial pattern. Postural alterations and the skeletal pattern seem to play an important role in infant dentofacial growth. (C) 2003 Elsevier B.V. Ireland Ltd. All rights reserved.