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1.
Int. j. morphol ; 37(3): 977-984, Sept. 2019. tab, graf
Artigo em Inglês | LILACS-Express | ID: biblio-1012384

RESUMO

SUMMARY: Orthodontically induced inflammatory root resorption (OIIRR) is a complication of dental treatment which consists of the degradation of local tissue due to an inflammatory reaction provoked by inappropriate orthodontic stimulus. The aim of the present systematic review was to assess the effectiveness of low-level laser therapy (LLLT) in reducing orthodontically induced inflammatory root resorption (OIIRR) in animal models. A systematic review was carried out in the MEDLINE, EMBASE and LILACS databases. Studies of interventions in animals were selected which analysed the effect of LLLT on OIIRR repair. The risk of bias was analysed through the 10 domains of the SYRCLE RoB tool for animal studies. Seventy-one studies were found; 27 were eliminated as duplicates and 44 titles/abstracts were analysed. Of these, 38 were excluded, and five studies were included for qualitative analysis. In 66.6 % of the studies included, the authors state that LLLT was effective in the inhibition/repair of OIIRR. In histological analysis it was observed that root resorption was significantly less in animals treated with laser as compared to the control. Furthermore, LLLT accelerated cicatrization after OIIRR. Laser proved effective in reducing root resorption lacunae and shortening the inflammatory process induced by the application of orthodontic force.


RESUMEN: La resorción radicular inflamatoria inducida por tratamiento ortodontico (RRIITO) es una complicación del tratamiento odontológico que consiste en la degradación del tejido local debido a una reacción inflamación provocada por un estímulo ortodóntico inadecuado. El objetivo fue analizar la efectividad de la terapia láser de baja intensidad (LBI) en la disminución de RRIITO en ratas. Se realizó una revisión sistemática en las bases MEDLINE, EMBASE y LILACS. Fueron utilizados los términos 'resorción radicular', 'láser de baja intensidad', 'fototerapia', 'tratamiento ortodóntico', 'movimiento dental'. Fueron seleccionados estudios de intervención en animales, que analizaron el efecto del LBI en la reparación de la RRIITO. Los riesgos de sesgos fueron analizados mediante los 10 domínios de la herramienta SYRCLE RoB para estudios en animales. 71 estudios fueron encontrados, siendo eliminados 27 duplicados, y analizados 44 títulos/abstracts; de estos, fueron incluídos 5 estudios para análisis cualitativa. El 66,6 % de los estudios incluidos afirman que el LBI fue efectivo em reparar la RRIITO. En el análisis histológico se observó que la RRIITO fue significativamente menor en animales tratados con láser en comparación con el control. Además de eso, el LBI aceleró el proceso de cicatrización de la RRIITO. El láser se mostró efectivo en reducir las lagunas de resorción radicular y acortar el proceso inflamatorio inducido por la aplicación de fuerzas ortodonticas.

2.
Rev. chil. nutr ; 46(3): 343-351, jun. 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1003713

RESUMO

ABSTRACT The object of the present study was to carry out a literature review to analyze the influence of physical activity and dietary behavior on body mass index in school-age children and adolescents. A search was carried out using the PubMed and LILACS databases, in which 1,412 articles were found. After application of inclusion and exclusion criteria, 17 studies were selected for qualitative analysis. Overweight and obesity were related with incorrect dietary habits (skipping breakfast, consumption of foods with high fat contents and high-sugar soft drinks), low levels of physical activity and long hours devoted to sedentary activities (playing video games or watching TV) were also related.


RESUMEN El objetivo de este estudio fue analizar, mediante una revisión de la literatura, la influencia de la práctica de actividad física y del comportamiento dietético sobre el índice de masa corporal de niños y adolescentes en fase escolar. Se realizó una búsqueda en las bases PubMed y LILACS. Se encontraron 1.412 artículos. Tras la aplicación de los criterios de inclusión y exclusión fueron seleccionados 17 estudios para realizar un análisis cualitativo. El sobrepeso y la obesidad están relacionadas a una alimentación in-adecuada (saltar el desayuno, consumo de alimentos con alto contenido de grasa y de bebidas azucaradas), niveles bajos de actividad física y longas horas realizando actividad sedentaria (jugando video-juegos o visualizando la TV).


Assuntos
Exercício , Índice de Massa Corporal , Criança , Adolescente , Comportamento Alimentar , Literatura de Revisão como Assunto
3.
Artigo em Inglês | MEDLINE | ID: mdl-31035441

RESUMO

Media influence may lead adolescents to internalize patterns of physical beauty, resulting in dissatisfaction with their own bodies when they are unable to match up to these patterns. In the constant search for an 'ideal body', adolescents may begin to develop risk behaviors for the development of eating disorders (ED). The object of this study was to analyze the influence of the mass media on body dissatisfaction (BD) and on ED in adolescents, comparing genders. We also analyzed the influence of BD on the risk of developing unsuitable eating behaviors, with risk of ED, comparing genders. A cross-sectional study was carried out with 1011 adolescents: 527 girls and 484 boys. The BMI of each adolescent was determined, and the instruments EAT-26, Sociocultural Attitudes towards Appearance Questionnaire-3 (SATAQ-3), and body shape questionnaire (BSQ), were applied. For statistical analysis, we used Student's t-test, the chi-square test, Pearson's correlation test, the odds ratio, and hierarchical multiple linear regression. The influence of the mass media is associated with a greater probability of adolescents presenting BD. An increase in BD is associated with an increased risk of developing ED in adolescents of both genders but is greater in girls than in boys. Furthermore, the influence of the MM and BMI are predictors of BD in both genders; and BD is a predictor of ED risk in both girls and boys.

4.
Artigo em Inglês | MEDLINE | ID: mdl-30484270

RESUMO

BACKGROUND: Analysis of the bones and bone fragments of the cranium may be a useful tool for sex diagnosis in the identification of human remains which have been exposed to adverse conditions. The object of the present study was to evaluate sex prediction through metric and non-metric analysis of the hard palate (HP) and the pyriform aperture (PA), using macerated skulls of adult individuals. MATERIALS AND METHODS: We analysed 312 dry skulls of adult individuals of both sexes, studying the metric and non-metric characteristics of the hard palate and pyriform aperture. The accuracy, sensitivity, specificity and positive and negative predictive values were evaluated. A binary logistic regression and a linear regression were performed. The ROC curve was constructed to analyse the performance of sex diagnosis. Measurements of the HP and the PA were analysed by ANOVA and Tukey's test. The SPSS v.20.0 software was used, with a significance threshold of 5%. RESULTS: The shape of the PA presented 61.9% accuracy, 54.4% sensitivity and 65.7% specificity. The shape of the HP presented 51.5% accuracy, 65.6% sensitivity and 44.7% specificity. Only the height of the PA functioned as a good predictor of sex. CONCLUSIONS: The height of the PA produced good diagnostic performance (area under curve=0.764). The height of the PA was the most reliable indicator for sex prediction, and could be used by forensic scientists to identify sex.

5.
Biomed Res Int ; 2018: 2709401, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29984228

RESUMO

The object of this study was to analyse the morphology and morphometry of the mandibular canal (MC) course and the mental foramen (MF) position in relation to the inferior teeth by panoramic X-ray (PAN). Vertical linear measurements were taken of each hemimandible to obtain the length of the distances analysed. We studied the MF position in relation to inferior premolar roots and the relation between the MC and mandibular teeth roots (MCR). The MF was usually located between the apices of the first and second premolars in younger individuals and immediately below the apex of the inferior second premolar in older individuals. The MC evinced proximity to the third molar, and this relation was not affected by sex or age group. The distances analysed in this study presented a marked difference between gender, with larger values in males than in females. The variations which may occur between individuals and different populations make it essential for dentists and surgeons to plan carefully before procedures involving this region.

6.
Int. j. morphol ; 36(2): 513-518, jun. 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-954146

RESUMO

Osteoarthrosis (OA) is a degenerative disease characterized by loss of joint cartilage, remodelling of the subchondral bone, narrowing of joint spaces and the formation of osteophytes. Animal models are used to study the mechanisms of OA, as well as to test the effects of anti-osteoarthrosis drugs. The objective of the present study was to determine the changes identifiable by imaging techniques occurring in rabbit temporomandibular joints (TMJ) at 15, 25 and 45 days after OA inducement by monoiodoacetate (MIA) and papain. The imaging technology used was cone-beam computerised tomography (CBCT). The model animals were 22 young adult male New Zealand rabbits, divided randomly into three study groups: Four rabbits in the control group, nine in the papain experimental group and nine in the monoiodoacetate (MIA) experimental group. OA was induced by arthrocentesis in the lower compartment of both TMJs. The rabbits were examined by CBCT at 15, 25 and 45 days after the injection of MIA and papain. The mandibular condyles presented loss of their rounded shape, deformation of the condyle or mandibular fossa, cortical irregularity, cortical wear and changes in the dimensions of the condyle. OA induction by MIA and papain generates changes observable by CBCT in the dimensions of the mandibular condyle in rabbits. Both inducers promote signs compatible with OA on the joint surfaces of the TMJ; MIA promotes more expressive changes.


La osteoartrosis (OA) es una enfermedad degenerativa caracterizada por la pérdida de cartílago articular, remodelación ósea subcondral, estrechamiento del espacio articular y formación de osteofitos. El modelo animal es utilizado para estudiar los mecanismos de la OA, así como testar el efecto de drogas anti-osteoartrosis. El objetivo de este estudio fue determinar los cambios imagenológicos, mediante tomografía computarizada cone-beam (TCCB), que se generan en 15, 25 y 45 días, luego de la inducción de OA por medio de Monoiodoacetato (MIA) y Papaína sobre la ATM de conejos. Fueron utilizados 22 conejos machos, adultos jóvenes, de raza New Zealand divididos aleatoriamente en 3 grupos de estudio: 4 conejos para un grupo control, 9 conejos para el grupo experimental con Papaína y 9 conejos para el grupo experimental con monoiodoacetato (MIA). Se realizó la inducción de OA por la técnica de artrocentesis en el compartimiento inferior de ambas ATMs. Se les realizó examen de TCCB en los días 15, 25 y 45 tras la inyección de MIA y de papaina. Los cóndilos mandibulares presentaron pérdida de forma redondeada de cóndilo, deformidad de cóndilo o fosa mandibular, irregularidad de corticales, desgaste de corticales, cambio de dimensiones de cóndilo. La inducción de OA por medio de MIA y papaína genera cambios en la dimensión del cóndilo mandibular de conejos observables a través de TCCB. Además, ambos inductores promueven signos compatibles con OA en las superficies articulares de la ATM, siendo que la MIA promueve cambios más expresivos.


Assuntos
Animais , Masculino , Coelhos , Osteoartrite/patologia , Articulação Temporomandibular/patologia , Papaína/toxicidade , Tomografia Computadorizada de Feixe Cônico , Iodoacetatos/toxicidade , Osteoartrite/induzido quimicamente , Osteoartrite/diagnóstico por imagem , Articulação Temporomandibular/efeitos dos fármacos , Articulação Temporomandibular/diagnóstico por imagem
7.
Eur. j. anat ; 22(1): 17-22, ene. 2018. ilus, tab
Artigo em Inglês | IBECS | ID: ibc-170477

RESUMO

The foramen venosum (FV) is a small, inconstant orifice in the middle cranial fossa, located anterior and medial to the foramen ovale (FO). The object of the present study was to analyse the frequency of the FV, its side of appearance, diameter and distance from the FO, in macerated skulls of adult Brazilians from the north-eastern region of Brazil. 194 macerated skulls were analysed. The diameter of the FV and its distance from the FO (FV-FO) were measured with a digital calliper. The FV was present in 18.5% of the skulls. Unilateral presence (12.4%) was more frequent than bilateral (6.1%). When unilateral, the FV was more frequent on the left side (9.3%) than the right (3.1%). We observed asymmetry in the size of the FV, which was larger on the left side (p=0.043). No statistically significant difference was observed between sides for FV-FO, however this distance was significantly greater in women than in men (p=0.006). The FV is an important anatomical variation, and may occur bilaterally or unilaterally. It is asymmetrical, with larger diameter found on the left side. The findings of this study provide important information for surgeons and morphologists on the anatomy of the middle cranial fossa (AU)


No disponible


Assuntos
Humanos , Masculino , Feminino , Adulto , Forame Oval/anatomia & histologia , Base do Crânio/anatomia & histologia , Variação Anatômica/fisiologia , Nervo Trigêmeo/anatomia & histologia , Seio Cavernoso/anatomia & histologia , Análise de Variância , Neuralgia do Trigêmeo , Pterígio
8.
Pain Res Manag ; 2017: 8560652, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29089818

RESUMO

OBJECTIVES: To assess the effectiveness of low-level laser therapy (LLLT) in reducing orthodontic pain after the application of orthodontic force (OF). METHODS: A systematic search was conducted in the MEDLINE, EMBASE, Scopus, Cochrane Library, Web of Science, and EBSCOhost databases. The study included randomized clinical trials (RCT) which analysed the effectiveness of LLLT in reducing orthodontic pain assessed at 24 and 72 hrs after the application of OF. The risk of bias of the eligible trials was assessed using the Cochrane Collaboration's risk of bias tool. Standard mean difference was calculated and pooled by meta-analysis using random effect models. RESULTS: Of 467 identified articles, 20 RCT were finally included. In the risk of bias assessments, 13 studies presented a high risk, 5 an unclear risk, and 2 a low risk. The meta-analysis showed that in patients treated with laser versus placebo there was a difference in favour of LLLT in spontaneous pain 24 and 72 hrs after the installation of light archwires and spontaneous pain and chewing pain 24 and 72 hrs after the installation of elastomeric separators. CONCLUSIONS: LLLT proved to be effective in promoting a reduction in spontaneous and chewing pain after the application of OF; however, the poor quality of the evidence requires these results to be treated with caution.


Assuntos
Terapia com Luz de Baixa Intensidade/métodos , Dor/radioterapia , Odontopatias/radioterapia , Bases de Dados Factuais , Humanos , Manejo da Dor
10.
Int. j. morphol ; 35(3): 1114-1120, Sept. 2017. ilus
Artigo em Inglês | LILACS | ID: biblio-893102

RESUMO

The mental foramen (MF), located in the body of mandible in the region below the inferior premolars, is the anatomical structure through which the mental neurovascular bundle emerges. The MF can be seen clearly in panoramic X-rays. The object of the present study was to carry out a literature review in order to identify the frequency and position of the MF in panoramic X-rays. We looked for articles in the SCiELO, Pubmed, Scopus, LILACS, Web of Science and EBSCOhost databases, for the years 2006 to 2016. The key words used were "mental foramen", "mandibular canal", "inferior alveolar nerve", "anatomy" and "panoramic X-ray". Once the articles had been selected, an analysis was made of their methodological quality; poor-quality articles were excluded. In each article the frequency and position of the MF in each hemi-mandible was analyzed. We found 82 articles, of which 20 were retained after application of the exclusion criteria. The MF was found in 4,824 hemi-mandibles (95.2 %), with greater presence on the left side (50.29 %) than the right (49.71 %). The MF is most commonly located between the apices of the inferior premolars (42.22 %), coincident with the root of the second inferior premolar (33.98 %) or distal of the root of the second inferior premolar (10.98 %). The MF is a very frequent anatomical structure. Knowledge of its location is fundamental for reducing the risk of accidents and unexpected events during clinical and surgical manoeuvres.


El foramen mental (FM), ubicado en el cuerpo de la mandíbula, inferiormente a la región de los dientes premolares inferiores, es la estructura anatómica por donde emerge el paquete vásculonervioso mental. El FM se logra visualizar con buena precisión en una radiografía panorámica. El objetivo del presente estudio fue realizar una revisión de la literatura para identificar la frecuencia y posición del FM en radiografías panorámicas. Se buscaron artículos en las bases de datos SCiELO, Pubmed, Scopus, LILACS, Web of Science y EBSCOhost, entre los años 2006 y 2016. Las palabras clave utilizadas fueron "foramen mental", "canal mandibular", "nervio alveolar inferior", "anatomía" y "radiografía panorámica". Tras la selección de los artículos se realizó un análisis de la calidad metodológica de los mismos, donde se excluyó artículos de baja calidad. Se analizó en cada artículo la frecuencia y posición del FM en cada hemimandíbula. Se encontraron 82 artículos, de los cuales quedaron sólo 20 al aplicar criterios de exclusión. El FM fue encontrado en 4824 hemimandíbulas (95,2 %), siendo el lado izquierdo donde hubo mayor presencia de forámenes (50,29 %) en comparación al lado derecho (49,71 %). El FM se localiza entre los ápices de los premolares inferiores en 42,22 %, es coincidente con la raíz del segundo premolar inferior en 33,98 %, y es distal a la raíz del segundo premolar inferior en 10,98 %, siendo éstos los más relevantes. El FM es una estructura anatómica muy frecuente, ubicada en general inferiormente a los premolares inferiores. Es una estructura de gran importancia clínica, por ello el conocimiento detallado de sus características y variaciones anatómicas es muy importante para evitar complicaciones y disminuir el riesgo de accidentes durante procedimientos clínico-quirúrgicos en la región. Además, a pesar de que la RP presenta buena precisión en la identificación del FM hay condiciones clínicas que requieren otros métodos imagenológicos para su identificación.


Assuntos
Humanos , Masculino , Feminino , Mandíbula/anatomia & histologia , Nervo Mandibular/anatomia & histologia , Radiografia Panorâmica , Mandíbula/diagnóstico por imagem , Nervo Mandibular/diagnóstico por imagem
11.
Case Rep Dent ; 2017: 7956041, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28293442

RESUMO

Diagnosis and preoperative planning are critical in the execution of any surgical procedure. Panoramic radiography is a routine method used in dentistry to assist clinical diagnosis; however, with this technique 3D anatomical structures are compressed into 2D images, resulting in overlapping of structures which are of interest in the diagnosis. In this study we report the case of a patient who presented with a dentigerous cyst of expressive dimensions in the body of the mandible region. The surgery was planned and executed after observing the margins of the lesion by Cone Beam Computed Tomography (CBCT). We conclude that CBCT is a precise method to help diagnosis; it provides greater accuracy in surgical treatment planning through 3D image display, allowing more effective results.

12.
Case Rep Dent ; 2016: 3920850, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27340572

RESUMO

Fibrous dysplasia (FD) is a condition in which normal bone marrow is replaced by an abnormal proliferation of new fibrous connective tissue. Female patient, white, 20 years old, attended the dental clinic reporting a slow increase in volume in the right mandible region over the last 5 years. She was examined by imaging: the panoramic X-ray revealed a lesion with the appearance of ground glass while the cone-beam computed tomography showed an extensive lesion in the region of the right hemimandible. The histopathological examination was compatible with fibrous dysplasia. Bone gammagraphy was indicated, plus an endocrinological study to eliminate polyostotic forms, which produced a negative result. Monostotic fibrous dysplasia in the right hemimandible was diagnosed. Conservative surgery was carried out and after 1 year recurrence of the tumour was observed. We may conclude that conservative surgery might not be the best choice for treatment for monostotic fibrous dysplasia in the mandible and that other options must be considered, such as radical surgery or the use of bisphosphonates. In our study, we may also conclude that it is very important to explain to the patient the possibility of recurrence of the lesion and the need for monitoring with periodic imaging studies.

13.
Int. j. odontostomatol. (Print) ; 10(1): 107-111, abr. 2016. ilus
Artigo em Inglês | LILACS-Express | ID: lil-782629

RESUMO

The surgery for extraction of the retained lower third molar is one of the most commonly performed procedures in the field of maxillofacial surgery. During this procedure, the surgical trauma can cause damage to the function of muscles involved in mandibular movements, such as the masseter muscle. In order to accelerate post-surgical recovery, many physiotherapy resources are employed, including laser therapy. The aim was to analyze the electrical activity of the masseter muscle treated with Low-level Laser (LLL) after surgical trauma. Assessments of masseter muscle on a sample of 60 patients were performed by surface electromyography in four instances: immediate preoperative, postoperative at 7, 14 and 21 days. The patients were divided into two groups: 1- untreated group with LLL in the postoperative; 2- group treated with LLL (810 nm; 10 J/cm2) in the immediate postoperative and at 3, 6 and 9 days after surgery. On the seventh day after surgery 23.3 % of the patients in the group receiving LLL showed recovery of their muscle activity as they presented in the immediate preoperative, versus only 3.3 % of the untreated group. On the 14th day, 73.3% of treated patients showed functional rehabilitation, versus 6.7% in the untreated group, and on the 21st, 80% versus 10% in the untreated group. On the 14th postoperative day the electrical activity of the masseter muscle treated with LLL after surgical trauma was compatible with a condition of complete functional recovery. The findings of this electromyographic study indicated that LLL proved to be an efficient physiotherapeutic method for stimulating the masseter muscle functional recovery after surgery of retained lower third molars.


La cirugía para extracción del tercer molar mandibular retenido es uno de los procedimientos más realizados en el campo de la cirugía maxilofacial. Durante este procedimiento, el trauma quirúrgico puede causar daño a la función de los músculos involucrados en los movimientos mandibulares, entre ellos el músculo masetero. Con el objetivo de acelerar la recuperación postoperatoria, son utilizados muchos recursos de fisioterapia, incluyendo la terapia con láser. El objetivo de este estudio fue analizar la actividad eléctrica del músculo masetero tratado con láser de baja intensidad (LBI) después del trauma quirúrgico. Se realizaron evaluaciones del músculo masetero en una muestra de 60 pacientes, a través de electromiografía de superficie en cuatro momentos: preoperatorio inmediato, postoperatorio a los 7, 14 y 21 días. Los pacientes fueron divididos en dos grupos: 1 - grupo no tratado con LBI en el postoperatorio; 2 - grupo tratado con LBI (810 nm; 10 J/cm2) en el postoperatorio inmediato y a los 3, 6 y 9 días tras cirugía. Al séptimo día tras cirugía el 23,3 % de los pacientes del grupo tratado con LBI presentaron recuperación de su actividad muscular equivalente a lo presentado en el preoperatorio inmediato, frente a sólo el 3,3 % del grupo no tratado. En el día 14, el 73,3% de los pacientes tratados presentaron rehabilitación funcional, frente al 6,7% del grupo no tratado y en el vigésimo primer día, el 80% frente al 10% del grupo no tratado. En el dia 14 postoperatorio la actividad eléctrica del músculo masetero tratado con LBI después del trauma quirúrgico fue compatible con una condición de recuperación funcional completa. Los hallazgos de este estudio electromiográfico indicaron que el LBI es un eficiente método fisioterápico para estimular la recuperación funcional del músculo masetero tras cirugía de terceros molares mandibulares retenidos.

14.
Int. j. morphol ; 34(1): 42-48, Mar. 2016. ilus
Artigo em Inglês | LILACS | ID: lil-780473

RESUMO

The lingula of the mandible is a bone projection that limits medially the mandibular foramen, which is the region where the inferior alveolar neurovascular bundle penetrates. The lingula is an important anatomical landmark used in maxillofacial surgeries and to block the inferior alveolar nerve. The aim of this study was to analyze the different types of lingula found in mandibles of Brazilian individuals, considering aspects such as gender and race. One hundred thirty-two macerated mandibles of Brazilian adult individuals of both sexes, black and white skin colors, were used. The lingula was classified into four types: triangular, truncated, nodular and assimilated. The data were analyzed using Chi-square test and Fisher's exact test. The truncated shape was the most commonly found (49 %), followed by nodular (26.5 %) and triangular (23.3 %) shapes. The assimilated shape was significantly less prevalent with 1.2 %. Each type of the lingula was more often bilateral rather than unilateral. Considering skin color we observed that the truncated shape was more prevalent in black individuals than in white individuals and the nodular shape was more prevalent in white individuals than in black individuals. There was no case of assimilated shape in black individuals. Considering gender we observed that the truncated shape was more prevalent in females than in males and the triangular shape was more prevalent in males than in females. The lingula shape showed no side preference. Our findings facilitate the planning of oral and maxillofacial surgical procedures that involve the lingula and/or the inferior alveolar neurovascular bundle, avoiding operative complications.


La língula de la mandíbula es una proyección ósea que limita medialmente el foramen mandibular, región en la cual penetra el fascículo vásculonervioso. Es un importante punto de referencia en cirugías maxilofaciales, utilizado en cirugías y en el bloqueo del nervio alveolar inferior. El objetivo fue analizar los diferentes tipos de língula encontrados en mandíbulas de individuos brasileños, considerándose aspectos como sexo y raza. Fueron utilizadas 132 mandíbulas maceradas de individuos brasileños adultos de ambos sexos, leucodermas y melanodermas. Se clasificó la língula en cuatro tipos: triangular, truncada, nodular y asimilada. Para el análisis estadístico se utilizó el Chi-cuadrado y la prueba exacta de Fisher. La forma truncada fue la más frecuente (49 %), seguida de la nodular (26,5 %) y triangular (23,3 %). La forma asimilada fue menos prevalente, con el 1,2%. Cada tipo de língula fue más común bilateral. Considerando el color de piel se observó que la forma truncada fue más prevalente en melanodermas que en leucodermas y la forma nodular fue más prevalente en leucodermas que en melanodermas. No se encontró la forma asimilada en individuos melanodermas. Considerando el sexo, se observó que la forma truncada fue más frecuente en mujeres que en hombres y la forma triangular más frecuente en hombres que en mujeres. La forma de la língula mostró no tener preferencia por lado. Nuestros hallazgos facilitan la planificación de los procedimientos quirúrgicos orales y maxilofaciales que implican la língula y/o el paquete neurovascular alveolar inferior, evitando complicaciones operatorias.


Assuntos
Humanos , Masculino , Feminino , Grupo com Ancestrais do Continente Africano , Grupo com Ancestrais do Continente Europeu , Mandíbula/anatomia & histologia , Nervo Mandibular/anatomia & histologia , Caracteres Sexuais , Brasil , Mandíbula/inervação
15.
Int. j. morphol ; 34(1): 218-222, Mar. 2016. ilus
Artigo em Espanhol | LILACS | ID: lil-780497

RESUMO

En la literatura científica los efectos adversos del láser de baja intensidad (LBI) no están descritos de forma precisa, tampoco su inocuidad. El objetivo de este estudio fue evaluar el efecto de distintas dosis de LBI en el cóndilo mandibular de conejos. Dieciséis conejos divididos aleatoriamente en cuatro grupos experimentales (GE) de 4 animales fueron utilizados en este estudio. Se realizó un examen de tomografía computarizada cone beam (TCCB) de ambas articulaciones temporomandibulares (ATMs) de todos los animales que fueron utilizadas como control (GC). Luego, irradiamos cada ATM con LBI (As-Ga-Al 904 nm), 100 mW, spot 0,2 cm2, dos puntos, 3 veces/semana, totalizando 10 veces, con dosis de 15 J/cm2 (GE-1), 45 J/cm2 (GE-2), 60 J/ cm2 (GE-3) y 90 J/cm2 (GE-4). Después de 20 días de la última irradiación se realizó un nuevo examen de TCCB y luego se obtuvo las mediciones de los cóndilos en los planos coronal y sagital. Para el análisis estadístico se utilizó las pruebas de ANOVA y t-student. Los valores promedios encontrados para el GE fueron mayores que los encontrados para el GC, en los planos coronal y sagital. Hubo diferencia estadística significativa para el grupo 1 y entre los grupos 1 y 2. Concluimos que los valores promedios encontrados en las mediciones de los cóndilos mandibulares, sometidos a las dosis de LBI utilizadas en este estudio, fueron mayores que los encontrados para el GC en los planos coronal y sagital. Además, la TCCB demostró ser un método eficaz para el análisis de las dimensiones condilares.


In the scientific literature the adverse effects of Low Level Laser (LLL) are not precisely described, neither is their safety. The aim of this study was to evaluate the effect of different protocol doses of laser on the mandibular condyle of rabbits. Sixteen rabbits randomly divided into four experimental groups (EG) of 4 animals were used in this study. We carried out a cone beam computed tomography (CBCT) examination of both temporomandibular joints (TMJs) of all animals which were used as control. Subsequently, we radiated each TMJ with LLL (Ga-Al-As 904 nm), 100mW, spot 0.2 cm2, two points, 3 times/week, totaling 10 times, with doses of 15 J/cm2 (EG-1), 45 J/cm2 (EG-2), 60 J/cm2 (EG-3) and 90 J/cm2 (EG-4). After 20 days of the last irradiation we performed a new CBCT exam and then the measurement of the condyles on the coronal and sagittal planes was obtained. In the analysis of the results ANOVA and t-student for correlated samples was used. The average values found for the EG were higher than those found for CG for both the coronal and sagittal planes. There was a significant statistical difference for group 1 and between the groups 1 and 2. We concluded that the average values found in the measurements of the mandibular condyles, submitted to doses of LLL used in this study, were higher than those found for the control group in both the coronal and sagittal planes. Furthermore, the CBCT proved to be an effective method for analysis of condylar dimensions.


Assuntos
Animais , Coelhos , Terapia com Luz de Baixa Intensidade/métodos , Côndilo Mandibular/diagnóstico por imagem , Côndilo Mandibular/efeitos da radiação , Articulação Temporomandibular/diagnóstico por imagem , Articulação Temporomandibular/efeitos da radiação , Tomografia Computadorizada de Feixe Cônico , Doses de Radiação
16.
Int J Clin Exp Med ; 8(3): 4292-6, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26064344

RESUMO

PURPOSE: The aim of this study was to analyze the presence of the RMF in mandibles, considering gender and ethnic group. The RMC was also analyzed using periapical radiography. METHODS: Eighty-six mandibles from adult individuals of both sexes, of white and black skin colours were analyzed. The presence of RMF (bilateral or unilateral) was observed, with the side and the number of foramina in each hemimandible. Five mandibles were selected for RMC evaluation by periapical radiography. RESULTS: We observed at least 1 RMF in 16 mandibles out of a total of 86 (18.60%) and in 21 out of 172 sides (12.20%). The percentages were 27% in black individuals, 15.6% in white individuals, 23.8% in females and 13.8% in males. CONCLUSIONS: The RMF is a reasonably frequent anatomical variation and shows no differences between sexes or ethnic group, can be unilateral or bilateral and presents no side preference. The RMC presents different types of course and can even establish contact with the alveolar cortical, which might further complicate surgical and anaesthetic procedures in this region.

17.
Biomed Res Int ; 2015: 873751, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25821826

RESUMO

OBJECTIVES: The purpose of this research was to study, in macerated adult human mandibles, the height of the lingula and provide morphometric data for its location considering aspects such as shape of the lingula, gender, and race. MATERIAL AND METHODS: 132 macerated mandibles of Brazilian adult individuals, both sexes, Amerindian and Caucasian, were used. The distances: from mandibular notch to lingula; from anterior margin of ramus of mandible to lingula; from posterior margin of ramus of mandible to lingula; from mandibular base to lingula, and the height of lingula were obtained. To perform these measurements we used a digital caliper. The variables such as gender and race were analyzed. RESULTS: The mean values found for the height of lingula and its location were determined according to the gender, race, and the lingula shape. CONCLUSION: This research provides additional data on height of the lingula and morphometric data for its location considering aspects such as shape of the lingula, gender, and race, information that had not been reported in the literature to date. We emphasize that a careful study considering gender and ethnic group makes procedures involving the region of lingula safer.


Assuntos
Grupo com Ancestrais do Continente Europeu/estatística & dados numéricos , Índios Sul-Americanos/estatística & dados numéricos , Mandíbula/anatomia & histologia , Adulto , Brasil/etnologia , Feminino , Humanos , Masculino , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Caracteres Sexuais
18.
Int. j. morphol ; 33(1): 210-212, Mar. 2015. ilus
Artigo em Inglês | LILACS | ID: lil-743787

RESUMO

The knowledge of dental morphometry, especially of its radicular portion, is of great importance for certain dental specialties, such as, endodonty. Regarding the permanent lower anterior teeth we know that its morphology and root length, are variable. The aim of this study was to analyze the average length of the dental roots of permanent lower anterior teethin Brazilian individuals. The average root length obtained in this study for the lower central incisors was 13.07 mm; to lower canines the value found was 15.81 mm; the average value for the radicular portion of lower lateral incisors was 13.08 mm. We conclude that the mean value for the length of the radicular portion of permanent lower central incisors is similar to that found for permanent lower lateral incisors, because they have similar anatomical features. Among the lower incisors and lower canines the discrepancy is greater because the lower canines are bulkier. Furthermore, we could conclude that the values obtained in our study may be used as a parameter to characterize the average length of the dental roots of permanent lower anterior teethin Brazilian individuals.


El conocimiento de la morfometría dental, especialmente de su porción radicular, es de gran importancia para determinadas especialidades odontológicas, tales como la endodoncia. En cuanto a los dientes anteriores inferiores permanentes se sabe que su morfología y longitud radicular son variables. El objetivo de este estudio fue analizar el valor promedio de la longitud de las raíces dentales de los dientes anteriores inferiores permanentes de individuos brasileños. El valor promedio de la longitud de la raíz obtenido para el incisivo central inferior fue el 13,07 mm; para el canino inferior el valor promedio encontrado fue el 15,81 mm; el valor promedio para la porción radicular del incisivo lateral inferior fue el 13,08 mm. Se concluye que el valor promedio de la longitud de la porción radicular de los incisivos centrales mandibulares permanentes es similar al valor encontrado para los incisivos laterales mandibulares permanentes, hecho que se debe a las características anatómicas similares existentes entre ellos. Entre los incisivos y caninos mandibulares la discrepancia es mayor porque los caninos mandibulares son más voluminosos. Adicionalmente, concluimos que se puede utilizar los valores promedios obtenidos en este estudio como parámetro para caracterizar la longitud promedio de las raíces dentales de los dientes anteriores mandibulares permanentes de individuos Brasileños.


Assuntos
Humanos , Dentição Permanente , Raiz Dentária/anatomia & histologia , Brasil , Dente Canino/anatomia & histologia , Incisivo/anatomia & histologia
20.
Int J Clin Exp Med ; 7(8): 1931-9, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25232373

RESUMO

The aim of this study was to determine the prevalence of common carotid artery calcifications (CCAC) detected by panoramic radiographs (PR) in the population and main risk factors with review of the literature. Furthermore, the reliability of PR was verified to detect these calcifications. CCAC detected on PR was powerful markers for future cardiovascular or cerebrovascular events. We found that the prevalence of CCAC identified by PR may range from 0.43% to 9.4%, depending on the age and lifestyle of the population studied. In individuals with systemic diseases the prevalence was higher than in the general population, reaching up to 38.8%. The radiopaque masses compatible with CCAC identified by PR were more common in women and occurred unilaterally or both sides, without preference for one or the other. According to the literature reviewed PR had low sensitivity and acceptable accuracy for detecting CCAC. We conclude that calcified atheroma in the common carotid artery can be demonstrated in PR, and this is an important tool for early detection of CCAC. However, it is always necessary to refer the patient to a cardiology service to confirm the findings, determine the real extent of the disease and establish its corresponding treatment.

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