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1.
Surg Radiol Anat ; 33(3): 191-6, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21076959

RESUMEN

The mandible is a complex osteological structure composed of distinct units integrated into a single bone around the director axis of the mandibular nerve. In this study of the mandibular development, we use a method that synthesizes the contributions of each sub-unit, using the mandibular canal as reference system. This novel approach results in new informations and confirms the leading role of the mandibular nerve and of its curve in mandibular development. It would seem to be possible to explain a major part of mandibular development by the role of the nerve as guide.


Asunto(s)
Mandíbula/crecimiento & desarrollo , Nervio Mandibular/fisiología , Análisis Discriminante , Humanos , Mandíbula/anatomía & histología , Nervio Mandibular/anatomía & histología
2.
Int J Oral Maxillofac Surg ; 35(12): 1120-6, 2006 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-17011753

RESUMEN

A quantitative study of the elastic fibres found in the human temporomandibular disc and its attachments was performed. Seven left discs from 57- to 82-year-old subjects, without macroscopic evidence of a TMJ disorder, were analysed and prepared in parasagittal sections. The surface amount was measured, thresholded and expressed from 0 to 1, using microscopic digitized views after Weigert's resorcin-fuchsin staining of elastic fibres. Fibre density rates ranged from 0 to 0.687. The mean density was 0.1532 (sigma=0.1150) in the upper bilaminary zone, 0.1097 (sigma=0.1159) in the lower bilaminary zone, 0.0474 (sigma=0.0782) in the anterior band, 0.0180 (sigma=0.0603) in the posterior band and null in the intermediate zone. The difference in density rate between the structures was significant, except for the posterior band and the intermediate zone. The elastic fibre density rates in central and medial locations of the upper and lower bilaminary zones were twice as big as in the lateral locations. In the anterior band, the elastic fibre density was less abundant medially than in its lateral part. These quantitative results support the current elastic fibre distribution scheme, and confirm the necessity of studying their orientation, taking into account age and temporomandibular joint health parameters.


Asunto(s)
Tejido Elástico/anatomía & histología , Disco de la Articulación Temporomandibular/anatomía & histología , Factores de Edad , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador/métodos , Masculino , Persona de Mediana Edad , Disco de la Articulación Temporomandibular/cirugía
3.
Arch Mal Coeur Vaiss ; 98(9): 859-66, 2005 Sep.
Artículo en Francés | MEDLINE | ID: mdl-16231571

RESUMEN

Dental extractions in patients under platelet antiaggregant or anticoagulant therapy pose the problem of risk benefit between stopping or carrying on treatment. The difficulties of reequilibrating the INR after a heparin relay have led surgeons and cardiologists to look for alternative solutions. Different means of local haemostasis using products with haemostatic properties or not, or the use of sutures or glues, have given encouraging results but there is too much uncertainty for systematic recommendations to practicians responsible for dental extractions in these patients. The authors propose a technique which has the advantages of associating systematically different methods, making bleeding complications very unusual, without interrupting anticoagulant or antiaggregant therapy.


Asunto(s)
Anticoagulantes/efectos adversos , Hemorragia Bucal/prevención & control , Extracción Dental/métodos , Adulto , Anciano , Anciano de 80 o más Años , Anticoagulantes/administración & dosificación , Vendajes , Enbucrilato/uso terapéutico , Femenino , Hemostáticos/uso terapéutico , Humanos , Masculino , Persona de Mediana Edad , Hemorragia Bucal/etiología , Técnicas de Sutura , Extracción Dental/efectos adversos
4.
Opt Express ; 2(12): 462-70, 1998 Jun 08.
Artículo en Inglés | MEDLINE | ID: mdl-19381217

RESUMEN

A nonlinear Al(x)Ga(1-x)As waveguide consisting of a quasi-phase matched heterostructure embedded in a microcavity has been designed and fabricated. The microcavity resonator is formed by Al(2)O(3)/Al(0.32)Ga(0.68)As multilayer mirrors located above and below the waveguide core. The cavity resonantly enhances the surface emitting second-harmonic generation. The SH conversion efficiency has been measured for wavelengths between l = 1525 and 1575 nm. A simple waveguide loss measurement technique based on the SH autocorrelation of short optical pulses in a III-V waveguide is also demonstrated.

5.
J Clin Epidemiol ; 48(7): 969-76, 1995 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-7782805

RESUMEN

The epidemiologic determinants of the mammographic pattern were studied in 710 patients with aspirated gross (> 1 ml) cysts of the breast. The prevalence of the mammograms classified as P2-DY, that are considered to be associated with an increased breast cancer risk, was 636/710 or 89.6%. No relationship between mammographic patterns and characteristics of breast cyst fluid such as K+/Na+ ratio, apocrine changes and dehydroepiandrosterone sulfate concentration was observed. A significant decrease in the proportion of these patterns with increasing age (p = 0.006), Quetelet Index (p < 0.001), parity (p = 0.001), and in postmenopausal women (p = 0.026) was found. Conversely, P2-DY patterns were significantly associated with a later age at menarche (p = 0.023) and alcohol consumption (p = 0.001). In multivariate analysis, an independent association with age was not observed whereas the associations with age at menarche, parity, and relative weight were confirmed. In conclusion, the epidemiologic determinants of mammographic patterns are the same in Gross Cystic Disease patients as in unaffected women, and the lack of correlation between mammographic pattern and cyst type suggests that the latter may represent an independent predictor of breast cancer risk.


Asunto(s)
Enfermedad Fibroquística de la Mama/diagnóstico por imagen , Mamografía , Adulto , Factores de Edad , Anciano , Análisis de Varianza , Neoplasias de la Mama/etiología , Estudios de Cohortes , Exudados y Transudados , Femenino , Enfermedad Fibroquística de la Mama/clasificación , Enfermedad Fibroquística de la Mama/complicaciones , Enfermedad Fibroquística de la Mama/epidemiología , Humanos , Menarquia , Menopausia , Persona de Mediana Edad , Factores de Riesgo
6.
Eur J Surg Oncol ; 16(3): 220-4, 1990 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-2161353

RESUMEN

We report on 156 consecutive cases of in situ ductal carcinoma (DCIS) of the breast observed from 1968 to 1988. The relative frequency of DCIS was much higher in screened, with respect to self-referred, women and a significant association of DCIS with younger age was observed. The combined use of mammography and physical examination identified 138 of 156 total DCIS cases as suspicious. Mammography, physical examination or cytology (of nipple discharge or needle aspirate) were the only tests to provide suspicious evidence in 35, 22 and four cases respectively. DCIS was a relatively unexpected surgical finding in 13 apparently benign cases. Different surgical options were recorded in the study period but a temporal trend in favour of conservative surgery was evident. Subsequent ipsilateral or contralateral breast cancer was recorded in seven and six cases respectively. Death from breast cancer occurred in five cases, all of whom had contralateral or subsequent ipsilateral infiltrating cancer. This figure confirms the high curability of DCIS if local control is achieved.


Asunto(s)
Neoplasias de la Mama/diagnóstico , Carcinoma in Situ/diagnóstico , Carcinoma Intraductal no Infiltrante/diagnóstico , Adulto , Anciano , Biopsia/métodos , Neoplasias de la Mama/terapia , Carcinoma in Situ/terapia , Carcinoma Intraductal no Infiltrante/terapia , Terapia Combinada , Femenino , Humanos , Incidencia , Mamografía , Tamizaje Masivo/métodos , Mastectomía/métodos , Persona de Mediana Edad , Neoplasias Primarias Múltiples/epidemiología , Evaluación de Procesos y Resultados en Atención de Salud , Examen Físico , Dosificación Radioterapéutica , Recurrencia
7.
J Med Screen ; 10(3): 134-8, 2003.
Artículo en Inglés | MEDLINE | ID: mdl-14561265

RESUMEN

OBJECTIVE: To compare self-referred screenees with respondents to invitation for main performance indicators of mammography screening. SETTING: First round of an organised, population-based screening programme in six districts of northern Italy. METHODS: The screening test was a two-view mammography. Eligible women aged 50-69 years were invited. Self-referred attendees were accepted if they were eligible for screening and had not yet been invited or had been invited >6 months before presentation. Age-specific performance indicators were compared with the calculation of their ratio and 95% confidence intervals (CIs). Total ratios were age standardised. In situ carcinomas were excluded. RESULTS: The eligible population was 183 542 women. There were 112 188 respondents to invitation and 20 280 self-referred attendees. Self-referral rate was inversely related to age. Performance indicators were as follows: recall rate, 5.6% for self-referred attendees vs 5.5% for respondents (ratio 1.02, 95% CI 0.96 to 1.08); total aspiration cytology rate, 37.3% vs 28.3% (1.37, 1.24 to 1.51); biopsy rate, 17.0 vs 12.6 x 1000 (1.51, 1.35 to 1.67); total detection rate, 10.7 vs 7.5 x 1000 (1.70, 1.48 to 1.94); detection rate of pT1 carcinoma, 7.0 vs 6.1 x 1000 (1.35, 1.14 to 1.59); detection rate of pT2-4 carcinoma, 3.5 vs 1.2 x 1000 (3.51, 2.75 to 4.43); false-positive rate, 4.5% vs 4.7% (0.93, 0.87 to 0.99); positive predictive value (PPV) of mammography, 19.1% vs 13.5% (1.59, 1.39 to 1.82); PPV of biopsy, 63.7% vs 60.6% (1.13, 0.98 to 1.29); detected:expected ratio, 5.02 vs 3.37 (1.49, 1.28 to 1.74). All differences were more pronounced among or restricted to women aged 50-54 years. CONCLUSIONS: Self-referred screenees were similar to respondents to invitation in main indicators of screening feasibility such as recall rate and PPV of biopsy, while showing important increases in detection rates and detected:expected ratios, especially among women aged 50-54 years.


Asunto(s)
Neoplasias de la Mama/diagnóstico , Mamografía , Tamizaje Masivo , Participación del Paciente , Anciano , Neoplasias de la Mama/prevención & control , Servicios de Salud Comunitaria , Femenino , Humanos , Italia , Persona de Mediana Edad
8.
Tumori ; 74(2): 177-81, 1988 Apr 30.
Artículo en Inglés | MEDLINE | ID: mdl-3368972

RESUMEN

The authors report on a series of 529 consecutive patients examined on physical examination, mammography, nipple discharge cytology and galactography. The criterion for galactography was essentially bloody nipple discharge (73% of cases). Serous nipple discharge was not considered worthy of routine galactography since it is associated with an extremely low incidence of breast cancer. Surgical excision and histologic examination of the discharging duct was performed in 200 cases. Eighteen cases of breast cancer were detected (10 infiltrating, 8 intraductal) of which 9, 6, 7 or 7 were suspected on physical examination, mammography, cytology or galactography, respectively. All combined tests suspected 13 of 18 breast cancers; 3 intraductal breast cancers were biopsied because of evidence of multiple papillomas on galactography, and 2 infiltrating breast cancers were operated because of persistent bloody nipple discharge in the absence of any other sign. No breast cancer was suspected on galactography alone. Galactography is indicated in the presence of bloody nipple discharge, and a biopsy should be performed when breast cancer or multiple papillomas are suspected. The diagnosis and excision of a single papilloma (breast cancer was never misdiagnosed as a single papilloma on galactography) is not worthwhile since a single papilloma is a benign lesion, and the benefit of its excision is still unclear.


Asunto(s)
Neoplasias de la Mama/diagnóstico por imagen , Mama/metabolismo , Mamografía/métodos , Papiloma/diagnóstico por imagen , Adolescente , Adulto , Anciano , Estudios de Evaluación como Asunto , Femenino , Humanos , Persona de Mediana Edad
9.
Tumori ; 76(4): 370-3, 1990 Aug 31.
Artículo en Inglés | MEDLINE | ID: mdl-2399567

RESUMEN

The authors report on a consecutive series of 175 contralateral metachronous breast cancers. Eighty-six cases detected in women self referring for cancer-related subjective symptoms were compared to 89 cases detected as asymptomatic at routine examination. Detection in the asymptomatic phase was associated with a more favorable stage, but no differences in survival rates were observed between asymptomatic or symptomatic cancers when survival was measured from the date of first cancer diagnosis, in order to adjust for lead time bias. The nodal status of the first or of the second cancer was the only variable of prognostic value on univariate analysis, whereas a significant association to prognosis was evidenced only for nodal status of the first cancer. The study suggests that routine clinico-mammographic check-up may achieve early detection of contralateral metachronous breast cancer in the asymptomatic phase, but this does not seem to have a relevant impact on prognosis. The occurrence of a second primary breast cancer seems to be an indicator rather than a determinant of a worse prognosis.


Asunto(s)
Neoplasias de la Mama/diagnóstico , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/mortalidad , Neoplasias de la Mama/patología , Neoplasias de la Mama/secundario , Femenino , Estudios de Seguimiento , Humanos , Metástasis Linfática , Persona de Mediana Edad , Estadificación de Neoplasias , Pronóstico , Tasa de Supervivencia , Factores de Tiempo
10.
Tumori ; 69(6): 527-30, 1983 Dec 31.
Artículo en Inglés | MEDLINE | ID: mdl-6665875

RESUMEN

The authors report on 283 primary, non-metastatic, breast cancer cases consecutively referred after surgery and followed-up from a minimum of 10 months to a maximum of 3.5 years. All cases were studied according to the presence of estrogen receptors (ER). ER presence was correlated with age and menstrual status, with ER+ cases more frequent in older patients. No correlation was found between ER and nodal status. Prognosis was evaluated in terms of disease-free survival at 2 years (actuarial method). No correlation between ER and survival was evident for N- cases, whereas a better prognosis was recorded for ER+N+ patients compared to ER-N+, although the difference was not statistically significant. The observed results are compared with recent literature data and agree with other recent reports, which did not confirm the previously undiscussed statement regarding the prognostic role of ER determination. According to these studies and to the present study, the prognostic role of ER determination seems at least questionable and particularly the postoperative adjuvant treatment of ER-N- cases should be reconsidered.


Asunto(s)
Neoplasias de la Mama/análisis , Estrógenos/análisis , Receptores de Estrógenos/análisis , Adulto , Anciano , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/mortalidad , Femenino , Estudios de Seguimiento , Humanos , Metástasis Linfática , Menopausia , Persona de Mediana Edad , Periodo Posoperatorio , Pronóstico
11.
Tumori ; 71(4): 339-44, 1985 Aug 31.
Artículo en Inglés | MEDLINE | ID: mdl-4049535

RESUMEN

The authors report on 1,017 consecutive breast cancer cases without symptomatic metastases staged by means of chest X-ray (CXR), skeletal survey (BXR) and bone scintigraphy (BS). Occult metastases (DM) detection rate was 0.88%: 0.29% for lung and 0.59% for bone DM. The detection rate was correlated with clinical stage: 0.36% for stage I, 0.20% for stage II, 0.26% for stages I and II, and 2.77% for stage III cases. The sensitivity based on DM cases prevalent or surfacing within 6 months of follow-up was 0.30 for CXR, 0.22 for BXR and 0.55 for BS; specificity was 0.99, 0.98 and 0.90, respectively. The study confirms the possibility of early detection of DM with preoperative staging, but the extremely low detection rates in stage I and II cancers do not advise such a routine procedure. The higher detection rate of DM may suggest adoption of the routine staging procedure in stage III cancers. In these cases, although no evidence is available of a favorable prognostic impact of early detection and treatment of DM, an unnecessary mastectomy could be avoided in about 3% of cases in the presence of DM detected by the staging procedure.


Asunto(s)
Neoplasias de la Mama/patología , Factores de Edad , Anciano , Huesos/diagnóstico por imagen , Femenino , Humanos , Persona de Mediana Edad , Metástasis de la Neoplasia , Estadificación de Neoplasias , Radiografía Torácica , Cintigrafía
12.
Tumori ; 70(2): 179-83, 1984 Apr 30.
Artículo en Inglés | MEDLINE | ID: mdl-6730016

RESUMEN

The results of physical examination (PE) in the detection of local recurrences (LR) from breast cancer are reviewed in the follow-up experience of 1139 breast cancer patients. A minimum follow-up time of 5 years was considered. LR accounted for 40% of total first relapses and isolated (without distant metastases) LR represented about 1/3 of total relapses. The chest wall was the most frequent site of LR. The extent of LR was correlated with the probability of associated distant metastases detectable at the time of LR diagnosis, whereas no correlations were found with the presence or absence of subjective symptoms at diagnosis. The mean free interval from primary surgery was 3 months shorter for LR detected in asymptomatic phase than in the symptomatic phase. This difference increased to 5 months for recurrences detected in the first 2 years, when PE controls were repeated every 6 months whereas a smaller difference of 2 months was observed over 2 years with yearly controls. The mean and 5-year actuarial survival was better (75.5 vs. 64.9 months and 54% vs. 40%) for cases detected in the asymptomatic phase than in the symptomatic phase; however, the difference was not statistically significant for the small sample considered and could be even partially due to length biased sampling. On the basis of the reported results, PE should still be recommended as a follow-up test, although further studies are needed to assess its real impact on prognosis.


Asunto(s)
Neoplasias de la Mama/diagnóstico , Recurrencia Local de Neoplasia/diagnóstico , Neoplasias de la Mama/mortalidad , Neoplasias de la Mama/terapia , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Examen Físico , Pronóstico , Factores de Tiempo
13.
Tumori ; 76(3): 225-6, 1990 Jun 30.
Artículo en Inglés | MEDLINE | ID: mdl-2368165

RESUMEN

The authors report on 228 cases of suspected breast cancer local recurrences studied by fine needle aspiration cytology (FNAC). The nature (malignant = 133, benign = 95) of suspected lesions was assessed on histology (no. = 46) or according to unequivocal follow-up (no. = 182). Inadequacy rate was 0.20, 0.09 or 0.35 in total, cancer or benign cases, respectively, and was particularly high (0.50) for benign chest wall lesions. Accuracy was determined on adequate smears; dubious reports were assumed as positive. Sensitivity and specificity were 0.96 and 0.97, respectively. The routine use of FNAC is recommended since it helps in the differential diagnosis of suspicious cases and may bypass surgical biopsy of positive cases not eligible for surgical treatment.


Asunto(s)
Neoplasias de la Mama/diagnóstico , Recurrencia Local de Neoplasia/diagnóstico , Biopsia con Aguja , Diagnóstico Diferencial , Femenino , Humanos
14.
Diagn Cytopathol ; 7(2): 125-7, 1991.
Artículo en Inglés | MEDLINE | ID: mdl-2065564

RESUMEN

We report on 534 breast masses examined by fine-needle aspiration cytology. Two samples were obtained from each mass, one with aspiration and the other without. Aspiration, equivalent to that obtained by a 20-ml syringe on full aspiration, was obtained by an automatic aspirator. The two sampling modalities did not differ apart from aspiration and were compared in terms of inadequate sampling rates. The inadequacy rate was the same in 166 cancers (6.6%), whereas a significant difference was recorded in favor of aspiration (13.6 versus 24.4%) in 368 benign masses. When inadequate results were excluded, the accuracy of the two modalities was almost the same. Sensitivity was 97.4% and 96.7% and specificity was 99.4% and 99.3% for sampling with and without aspiration, respectively. Reducing the rate of inadequate sampling from benign masses seems to be the major advantage of aspiration. Double sampling, independent of the specific techniques, reduced inadequacy rates to very low levels (1.2% for cancers; 5.9% for benign masses) and may be useful as a routine policy.


Asunto(s)
Biopsia con Aguja/métodos , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/patología , Femenino , Humanos , Sensibilidad y Especificidad
15.
Acta Cytol ; 30(1): 17-20, 1986.
Artículo en Inglés | MEDLINE | ID: mdl-3456180

RESUMEN

The cytodiagnostic significance of the clinical patterns (types and sites) of nipple discharges was studied in 5,305 cytologically examined discharges from 3,687 women in a consecutive series of 50,181 self-referred women in whom 1,062 breast cancers were detected. The clinical patterns were correlated with cytologic and histologic results in both the whole series and in 119 biopsied cases, and the relative risk of association with breast cancer was calculated for each pattern. As a whole, aside from the pattern, cases with nipple discharges showed a higher relative risk (48.5) than did asymptomatic cases, but a bloody nipple discharge was by far more frequently associated with cancer than was any other pattern, being present in 70% of the cancer cases and in almost all cancer cases with suspicious cytologic findings in the discharge smear. The presence of a nipple discharge, being associated with a higher risk of breast cancer, is an indication for a careful physical examination; systematic cytologic examination should be limited only to bloody discharges. Since cancer is rare in cases with nonbloody discharges and is difficult to detect in cytologic smears of such discharges, systematic cytologic examination of all nipple discharges would not be cost-effective.


Asunto(s)
Neoplasias de la Mama/patología , Mama/metabolismo , Exudados y Transudados/citología , Pezones/metabolismo , Adulto , Envejecimiento , Biopsia , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/metabolismo , Exudados y Transudados/metabolismo , Femenino , Humanos , Estudios Retrospectivos , Riesgo
16.
Mater Sci Eng C Mater Biol Appl ; 38: 151-60, 2014 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-24656363

RESUMEN

Although mechanical stress is known as being a significant factor in bone remodeling, most implants are still made using materials that have a higher elastic stiffness than that of bones. Load transfer between the implant and the surrounding bones is much detrimental, and osteoporosis is often a consequence of such mechanical mismatch. The concept of mechanical biocompatibility has now been considered for more than a decade. However, it is limited by the choice of materials, mainly Ti-based alloys whose elastic properties are still too far from cortical bone. We have suggested using a bulk material in relation with the development of a new beta titanium-based alloy. Titanium is a much suitable biocompatible metal, and beta-titanium alloys such as metastable TiNb exhibit a very low apparent elastic modulus related to the presence of an orthorhombic martensite. The purpose of the present work has been to investigate the interaction that occurs between the dental implants and the cortical bone. 3D finite element models have been adopted to analyze the behavior of the bone-implant system depending on the elastic properties of the implant, different types of implant geometry, friction force, and loading condition. The geometry of the bone has been adopted from a mandibular incisor and the surrounding bone. Occlusal static forces have been applied to the implants, and their effects on the bone-metal implant interface region have been assessed and compared with a cortical bone/bone implant configuration. This work has shown that the low modulus implant induces a stress distribution closer to the actual physiological phenomenon, together with a better stress jump along the bone implant interface, regardless of the implant design.


Asunto(s)
Aleaciones/farmacología , Huesos/fisiología , Implantes Dentales , Módulo de Elasticidad/fisiología , Análisis Numérico Asistido por Computador , Huesos/efectos de los fármacos , Módulo de Elasticidad/efectos de los fármacos , Análisis de Elementos Finitos , Humanos , Estrés Mecánico
17.
Int J Oral Maxillofac Surg ; 42(2): 164-8, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23196066

RESUMEN

The authors describe a pooled analysis of 23 French patients presenting with oral metastasis between 1981 and 2008. The reviewed cases were collected from the medical records of two cancer institutes. The inclusion criteria were: the histology of the metastases must be known; the primary location must be known; metastasis and primary location must be physically separated; and oral primary locations were excluded. This sample represent 0.48% of all oral malignancies treated during the period. The sex-ratio was 2.3:1 in favour of men, the mean age was 64.5 years (±13.2). Lungs and kidneys represent 52.2% of the primary cancer locations. In most cases, the primary cancer was a carcinoma or an adenocarcinoma (82.6%). The most affected oral regions were the gingiva and alveolar mucosa (60.7%), followed by the tongue (17.9%). The mean survival was 16.6 months. This sample is characterized by the relative absence of specific symptoms and quite different distribution in primary sites. Even if oral metastases are rare, their semiological value necessitates the histopathological examination of any oral tumour, and a systematic search in all patients with cancer history.


Asunto(s)
Mucosa Bucal/patología , Neoplasias de la Boca/secundario , Adenocarcinoma/secundario , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma/secundario , Femenino , Francia , Humanos , Neoplasias Maxilomandibulares/patología , Neoplasias Maxilomandibulares/secundario , Neoplasias Maxilomandibulares/terapia , Masculino , Persona de Mediana Edad , Neoplasias de la Boca/patología , Neoplasias de la Boca/terapia , Estudios Retrospectivos , Sarcoma/secundario , Tasa de Supervivencia
18.
Surg Radiol Anat ; 29(2): 115-24, 2007 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-17318284

RESUMEN

The authors have studied the medial pterygoid muscle on 179 fresh cadavers using anatomical dissection and magnetic resonance imaging (MRI). The aim of this study was to define the general morphology and architectural organisation of the human medial pterygoid. Plane by plane dissection, anatomical sections in different spatial planes on half heads and isolated blocks demonstrated that the medial pterygoid has different architectural disposition and insertional zones from those which are normally described. The study has shown that the muscle has a typical penniform structure made up of seven alternating muscular/aponeurotic layers and that the tendinous intramuscular sheets were particularly well developed. This allows supporting a future functional study.


Asunto(s)
Músculos Pterigoideos/anatomía & histología , Anciano , Anciano de 80 o más Años , Cadáver , Disección/métodos , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad
19.
Artículo en Inglés | MEDLINE | ID: mdl-16997095

RESUMEN

Labiomandibular paresthesia after root canal treatment is an accident that is still too frequent despite the development of new endodontic techniques. The aim of this anatomical and clinical study is to advance the understanding of how accidents occur so as to avoid them. This anatomical study made it possible to determine the variability of proximity of the apex of the tooth root to the mandibular bundle, as well as the relationship between the nerve and its satellite artery, and to understand how endodontic filling material spreads into the cancellous bone. The clinical study, which included examination with conventional radiology as well as with imaging techniques, enabled us to identify the exact location of the filling material in relation to the mandibular bundle and to correlate this to the occurrence of clinical symptoms and their diverse manifestations.


Asunto(s)
Traumatismos del Nervio Craneal/etiología , Nervio Mandibular/efectos de los fármacos , Parestesia/etiología , Materiales de Obturación del Conducto Radicular/efectos adversos , Tratamiento del Conducto Radicular/efectos adversos , Traumatismos del Nervio Trigémino , Extravasación de Materiales Terapéuticos y Diagnósticos/complicaciones , Gutapercha/efectos adversos , Humanos , Mandíbula/anatomía & histología , Nervio Mandibular/anatomía & histología , Nervio Mandibular/irrigación sanguínea , Parestesia/inducido químicamente , Irrigantes del Conducto Radicular/efectos adversos , Obturación del Conducto Radicular/efectos adversos , Preparación del Conducto Radicular/efectos adversos , Ápice del Diente/anatomía & histología , Cemento de Óxido de Zinc-Eugenol/efectos adversos
20.
Surg Radiol Anat ; 27(4): 271-86, 2005 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-16200387

RESUMEN

The authors studied the lateral pterygoid muscle of 179 fresh cadavers by both anatomical dissection and magnetic resonance imaging. The aim was to define the general morphology and the architectural organisation of the lateral pterygoid muscle. Dissection plane by plane, anatomical sections in different planes of space and dissections via multiple approaches on harvested blocks allowed the demonstration that the lateral pterygoid shows an architectural arrangement different from that which is usually described but similar to that, from its typically penniform structure of the masseter and the medial pterygoid. The anatomical situation of this muscle gives rise to numerous differences in opinion much to its morphology as to its functional examination. This study has shown that one part of the muscle has a typical penniform structure made up of alternating musculo-aponeurotic layers and by the absence of individual muscle bellies. In addition the particular shape of this muscle makes it useless to insert intramuscular electrodes in its only accessible portion, which makes the results of electromyographic studies debatable.


Asunto(s)
Músculos Pterigoideos/anatomía & histología , Anciano , Anciano de 80 o más Años , Cadáver , Disección/métodos , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad
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