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1.
Int J Implant Dent ; 2(1): 23, 2016 Dec.
Article in English | MEDLINE | ID: mdl-27888491

ABSTRACT

PURPOSE: The objective of this study was to evaluate the effect of removal torque (reverse torque) of titanium implants in peri-implant bone. METHODS: The P1-M1 teeth were extracted bilaterally of 6 mini pigs (BR-1). Each animal received 6 titanium implants, three for each side of mandible. On the right side of mandible, 3 implants reminded 9 months (9M) under masticatory activity and on the left side, other 3 implants were placed and immediately removed (IR). All 36 implants were removed by removal torque, and the recorded values were statistically analyzed. Animals were euthanized right after the removal torque and recording. Each third (cervical, medium, and apical) of peri-implant bone was extracted and analyzed histological and immunohistochemically. Student's t test was used to determine statistical differences in the values between the 9M and IR samples. Data were presented as means with standard deviations. The level of significance was set at 5% (P < 0.05). RESULTS: Removal torque was higher in 9M experimental situation than in IR. Histological characteristics of mature bone were presented in the 9M experimental condition, and immature bone characteristics were presented in the IR experimental condition. Removal torque caused small fractures and rounding in the bone grooving. Immunohistochemical analysis reinforced the histological results; Student's t test provided statistically significant differences to osteocalcin expression in 9M samples and no statistically significant differences expression to collagen I in both experimental conditions (P < 0.05). CONCLUSIONS: Removal torque caused microscopical fractures and smoothing in the peri-implant bone grooves, but it does not compromise the bone healing.

2.
Femina ; 34(1): 9-12, jan. 2006. ilus
Article in Portuguese | LILACS, BVSAM | ID: lil-435980

ABSTRACT

O procedimento eletrocirúrgico é amplamente usado nas abordagens diagnóstica e terapêutica das lesões intra-epiteliais cervicais. O dano térmico imposto ao tecido é o maior inconveniente observado nesta técnica, impossibilitando, às vezes, o correto diagnóstico da doença. Vários fatores estão relacionados com dano tecidual, entre eles, preponderam o uso correto da técnica cirúrgica, a escolha adequada do equipamento e a experiência do cirurgião. Nosso objetivo é revisar a importância da lesão tissular na eletrocirurgia, com ênfase na assistência clínica


Subject(s)
Humans , Artifacts , Electrosurgery
3.
Femina ; 33(8): 587-593, ago. 2005. ilus, tab
Article in Portuguese | LILACS, BVSAM | ID: lil-471152

ABSTRACT

A neurofibromatose é uma doença genética que afeta uma parcela da população sem que haja correlação com sexo, raça ou idade. É incluída no grupo das facomatoses ou síndromes neurocutâneas. Manifesta-se com quadro clínico variável com alterações vulvares, pélvicas e mamárias entre outras. É uma doença hereditária autossômica dominante. Contudo, em cerca de 50 porcento dos casos não há história prévia familiar. Na doença de von Recklinghausen podem estar presentes alterações ginecológicas como puberdade precoce, tumores no complexo aréolo-papilar, neurofibromas vulvares e tumorações pélvicas ou retroperitoneais. O ginecologista deve conhecer as principais manifestações clínicas da doença, a identificação e pronto encaminhamento das portadoras para especialistas


Subject(s)
Humans , Female , Puberty, Precocious , Breast , Neurofibromatoses , Genitalia, Female/physiopathology , Hormone Replacement Therapy , Genetic Diseases, Inborn
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