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1.
Braz J Cardiovasc Surg ; 39(2): e20220436, 2024 Mar 01.
Article in English | MEDLINE | ID: mdl-38426701

ABSTRACT

INTRODUCTION: The aim of this study was to assess the impact of aortic angulation (AA) on periprocedural and in-hospital complications as well as mortality of patients undergoing Evolut™ R valve implantation. METHODS: A retrospective study was conducted on 264 patients who underwent transfemoral-approach transcatheter aortic valve replacement with self-expandable valve at our hospital between August 2015 and August 2022. These patients underwent multislice computer tomography scans to evaluate AA. Transcatheter aortic valve replacement endpoints, device success, and clinical events were assessed according to the definitions provided by the Valve Academic Research Consortium-3. Cumulative events included paravalvular leak, permanent pacemaker implantation, new-onset stroke, and in-hospital mortality. Patients were divided into two groups, AA ≤ 48° and AA > 48°, based on the mean AA measurement (48.3±8.8) on multislice computer tomography. RESULTS: Multivariable logistic regression analysis was performed to identify predictors of cumulative events, utilizing variables with a P-value < 0.2 obtained from univariable logistic regression analysis, including AA, age, hypertension, chronic renal failure, and heart failure. AA (odds ratio [OR]: 1.73, 95% confidence interval [CI]: 0.89-3.38, P=0.104), age (OR: 1.04, 95% CI: 0.99-1.10, P=0.099), hypertension (OR: 1.66, 95% CI: 0.82-3.33, P=0.155), chronic renal failure (OR: 1.82, 95% CI: 0.92-3.61, P=0.084), and heart failure (OR: 0.57, 95% CI: 0.27-1.21, P=0.145) were not found to be significantly associated with cumulative events in the multivariable logistic regression analysis. CONCLUSION: This study demonstrated that increased AA does not have a significant impact on intraprocedural and periprocedural complications of patients with new generation self-expandable valves implanted.


Subject(s)
Aortic Valve Stenosis , Heart Failure , Heart Valve Prosthesis , Hypertension , Kidney Failure, Chronic , Transcatheter Aortic Valve Replacement , Humans , Transcatheter Aortic Valve Replacement/methods , Aortic Valve/surgery , Aortic Valve Stenosis/surgery , Retrospective Studies , Treatment Outcome , Prosthesis Design , Kidney Failure, Chronic/etiology , Kidney Failure, Chronic/surgery , Heart Failure/surgery , Hypertension/etiology
2.
Rev. bras. cir. cardiovasc ; Rev. bras. cir. cardiovasc;39(2): e20220436, 2024. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1535538

ABSTRACT

ABSTRACT Introduction: The aim of this study was to assess the impact of aortic angulation (AA) on periprocedural and in-hospital complications as well as mortality of patients undergoing Evolut™ R valve implantation. Methods: A retrospective study was conducted on 264 patients who underwent transfemoral-approach transcatheter aortic valve replacement with self-expandable valve at our hospital between August 2015 and August 2022. These patients underwent multislice computer tomography scans to evaluate AA. Transcatheter aortic valve replacement endpoints, device success, and clinical events were assessed according to the definitions provided by the Valve Academic Research Consortium-3. Cumulative events included paravalvular leak, permanent pacemaker implantation, new-onset stroke, and in-hospital mortality. Patients were divided into two groups, AA ≤ 48° and AA > 48°, based on the mean AA measurement (48.3±8.8) on multislice computer tomography. Results: Multivariable logistic regression analysis was performed to identify predictors of cumulative events, utilizing variables with a P-value < 0.2 obtained from univariable logistic regression analysis, including AA, age, hypertension, chronic renal failure, and heart failure. AA (odds ratio [OR]: 1.73, 95% confidence interval [CI]: 0.89-3.38, P=0.104), age (OR: 1.04, 95% CI: 0.99-1.10, P=0.099), hypertension (OR: 1.66, 95% CI: 0.82-3.33, P=0.155), chronic renal failure (OR: 1.82, 95% CI: 0.92-3.61, P=0.084), and heart failure (OR: 0.57, 95% CI: 0.27-1.21, P=0.145) were not found to be significantly associated with cumulative events in the multivariable logistic regression analysis. Conclusion: This study demonstrated that increased AA does not have a significant impact on intraprocedural and periprocedural complications of patients with new generation self-expandable valves implanted.

3.
Article in Portuguese | VETINDEX | ID: biblio-1435714

ABSTRACT

Varos tibial é um desvio angular decorrente do fechamento precoce parcial da linha fisária de crescimento do osso, levando a um desalinhamento articular com apoio e sobrecarga anormais, causando, secundariamente, osteoartrite, claudicação, luxação de patela, dor e problemas articulares. Neste relato, uma cadela da raça dachshund foi diagnosticada com tal afecção bilateralmente. Foi observado um desvio de ambos os membros posteriores aos 6 meses de idade. A confirmação da deformidade varo foi feita por meio do exame radiográfico e, posteriormente, foi realizada a tomografia e estereolitografia para o planejamento da cirurgia para correção do desvio angular, utilizando a metodologia de correção para desvio angular, denominada de técnica do centro de rotação da angulação (CORA) fechada, removendo uma cunha do osso para a correção da deformidade. A cirurgia foi bem-sucedida, apresentando bons resultados conformacionais, evoluindo sem complicações.(AU)


Tibial pes varus is an angular deviation resulting from the early partial closure of the physeal line of bone growth, leading to joint misalignment with abnormal support and overload, secondarily causing osteoarthritis, claudication, patellar dislocation, pain, among other joint problems. In this report, a female Dachshund canine was diagnosed with this condition bilaterally in the tibias. It was observed a deviation of both hind limbs at 6 months of age. Confirmation of the varus deformity was made through radiographic examination, and later computed tomography and stereolithography were performed to plan the surgery to correct bilateral angular deviation of the tibia, using the angular deviation technique (CORA) closed, removing a wedge from the bone to correct the deviation angular. The surgery was successful, and the angular deviation was correctly corrected, presenting good results to the animal, without complications.(AU)


Subject(s)
Animals , Female , Talipes/diagnosis , Fracture Fixation, Internal/veterinary , Dogs
4.
JACC Case Rep ; 4(18): 1169-1175, 2022 Sep 21.
Article in English | MEDLINE | ID: mdl-36213889

ABSTRACT

Cardioneural ablation is a novel treatment for functional bradycardia. However, the risk of acute complications is still unknown. The aim of this case report is to describe acute occlusion of the sinus node artery after cardiac denervation procedures in 2 patients and to encourage measures to prevent it, such as evaluating the aortic angulation in older patients before the procedure and by monitoring signs of sinus failure during ablation in patients with electroanatomical maps showing a constricted aspect of the right atrium. (Level of Difficulty: Advanced.).

5.
Rev. colomb. cienc. pecu ; 35(3)sept. 2022.
Article in English | LILACS-Express | LILACS | ID: biblio-1535793

ABSTRACT

Background: Nutrient restriction is a common strategy to prevent metabolic disorders in fast growing broiler chickens, but limited information is available regarding the impact of diets with low protein and energy on leg abnormalities Objective: Two experiments were conducted to evaluate the effect of varying crude protein (CP) and metabolizable energy (ME) levels on gastrocnemius tendon (GTeBS) and tibia breaking strength (TiBS), gait score (GS) and valgus/varus angulation (VAng). Methods: In Experiment 1, eight-d-old Ross 308 broilers (n=90) were randomly assigned into three treatments: 13/2,900 (13% CP and 2,900 kcal ME kg-1 of diet), 17/3,000 (17% CP and 3,000 kcal ME kg-1 of diet), and 21/3,025 or control (21% CP and 3,025 kcal ME kg-1 of diet). In Experiment 2, six-d-old Ross 308 chickens (n=192) were randomly distributed into two treatments: 16/3,000; 16% CP and 3,000 kcal ME kg-1 of diet and 21/3,000 or control; 21% CP and 3,000 kcal ME kg-1 of diet. In both experiments data were analyzed as one-way ANOVA. Results: In Experiment 1, broilers in the 17/3,000 and control treatments had similar (p>0.05) GTeBS (202 and 224 N, respectively), and TiBS (338 and 332 N, respectively). Birds in the 13/2,900 treatment showed higher GS (lower walking ability; 80% of birds with score >3), and greater VAng (53% of birds with score >2) than broilers in the control treatment (0% of birds with GS score >3 and 0% of birds with VAng score >2). Experiment 2, broilers in the 16/3,000 showed similar VAng, GS and TiBS than birds in the control treatment. However, birds in the 16/3,000 treatment showed lower (-26%) GTeBS than birds in the control treatment (p<0.05). Conclusions: Feeding broilers with 16% CP and 3,000 kcal ME kg-1 of diet did not affect tibia breaking strength, gait score and valgus/varus angulation. A diet containing 16% CP or less and 2,900-3,000 kcal ME kg-1 reduces tendon and tibia breaking strength.


Antecedentes: La restricción de nutrientes es una estrategia común para prevenir trastornos metabólicos en pollos de engorde, sin embargo, se dispone de información limitada sobre el impacto de las dietas bajas en proteína y energía en las anomalías de piernas. Objetivo: Se llevaron a cabo dos experimentos para evaluar el efecto de niveles variables de proteína cruda (PC) y energía metabolizable (EM) en la fuerza de rotura del tendón del gastrocnemio (GTeBS) y tibia (TiBS), la evaluación de marcha (GS) y la angulación en valgus/varus (VAng). Métodos: En el Experimento 1, pollos de engorde Ross 308 de ocho días de edad (n = 90) se asignaron al azar en tres tratamientos: 13/2.900; 13% PC y 2.900 kcal ME kg-1 de dieta, 17/3.000; 17% PC y 3.000 kcal ME kg-1 de dieta y 21/3.025 o control; 21% PC y 3.025 kcal ME kg-1 de dieta. En el Experimento 2, pollos Ross 308 de seis días de edad (n = 192) se distribuyeron aleatoriamente en dos tratamientos: 16/3.000; 16% PC y 3.000 kcal ME kg-1 de dieta y 21/3.000 o control; 21% PC y 3.000 kcal ME kg-1 de dieta. En ambos experimentos los datos se analizaron como ANOVA de una vía. Resultados: En el Experimento 1, los pollos de los tratamientos 17/3.000 y control tuvieron GTeBS (202 y 224 N, respectivamente) y TiBS (338 y 332 N, respectivamente) similares (p>0,05). Las aves del tratamiento 13/2.900 mostraron mayor GS (menor capacidad para caminar; 80% de las aves con puntaje >3) y mayor VAng (53% de las aves con puntaje >2) que los pollos del tratamiento control (0% de aves con un puntaje GS >3 y 0% de aves con un puntaje VAng >2). En el Experimento 2, los pollos del 16/3.000 mostraron VAng, GS y TiBS similares a los de las aves del tratamiento control. Sin embargo, las aves del tratamiento 16/3.000 mostraron menor (-26%) GTeBS que las aves control (p<0,05). Conclusiones: La alimentación de pollos de engorde con 16% PC y 3.000 kcal EM kg-1 de dieta no afecta la resistencia a la ruptura de la tibia, la marcha y la angulación valgus/varus. La dieta formulada con 16% de PC o menos y 2.900-3.000 kcal de EM kg-1 reduce la resistencia a la ruptura del tendón y de la tibia.


Antecedentes: A restrição de nutrientes é uma estratégia comum para prevenir distúrbios metabólicos em frangos de corte, no entanto, há informações limitadas disponíveis sobre o impacto de dietas de baixa proteína e baixa energia nas anormalidades de pernas destas aves. Objetivo: Dois experimentos foram realizados para avaliar o efeito de diferentes níveis de proteína bruta (PB) e energia metabolizável (EM) em força de ruptura do tendão do músculo gastrocnêmio (GTeBS), forca de ruptura da tíbia (TiBS), gait score (GS) e angulação em valgus/varus (VAng). Métodos: Experimento 1, foram utilizados 308 frangos de corte machos da linhagem Ross com oito dias de idade (n = 90) distribuidos aleatoriamente em três tratamentos: dieta controle com 21% PB e 3.025 kcal EM kg-1 13/2.900; dieta con 13% PB e 2.900 kcal EM kg-1, y 17% PB e 3.000 kcal EM kg-1 . Experimento 2, foram utilizados 308 frangos de corte da linhagem Ross com seis dias de idade (n = 192) distribuídos aleatoriamente em dois tratamentos: dieta controle con 21% PB e 3.000 kcal EM kg-1 e dieta com 16% PB e 3.000 kcal EM kg-1 . Em ambos os experimentos, os dados foram submetidos a ANOVA. Resultados: Experimento 1, os frangos de corte submetidos ao dos tratamentos 17/3.000 e controle nao apresentaram diferencas significativas (p>0,05) para as variáveis GteBS (202 y 224 N, respectivamente) e TiBS (338 y 332 N, respectivamente). Os frangos submetidos ao 13/2.900 apresentaram maior frequência de GS (menor capacidade de locomocao; 80% das aves com pontuação>3) e maior VAng (53% das aves com pontuação>2) do que os frangos do tratamento controle (0% das aves com pontuação GS>3 e 0% das aves com pontuação VAng>2). Experimento 2, os frangos do 16/3.000 apresentaram VAng, GS e TiBS semelhantes aos das aves do tratamento controle. Entretanto, as aves do tratamento 16/3.000 apresentaram GTeBS mais baixo (-26%) em comparacao as aves do tratamento de controle (p<0,05). Conclusões: A dieta com 16% PB e 3.000 kcal EM kg-1 não afetou a forca de ruptura da tíbia, gaite score marcha e angulação em valgus/varus de frangos de corte. Uma dieta com níveis de 16% de PB ou menos e 2.900-3.000 kcal EM kg-1 reduziu a resistência à ruptura do tendão e a resistência de tibia de frangos de corte.

6.
Natal; s.n; 23/08/2022. 58 p. tab, ilus, graf.
Thesis in Portuguese | BBO - Dentistry | ID: biblio-1510740

ABSTRACT

Objetivo: Avaliar a influência da angulação e espessura da camada de impressão na resistência à flexão de três pontos (), estabilidade dimensional e rugosidade de uma resina provisória impressa. Metodologia: A partir da modelagem de uma barra (26 x 2,2 x 2,2mm) em software Meshmixer (Autodesk) e obtenção de arquivo STL, este foi exportado para o software da impressora 3D SLA (Forms2/Formlabs), onde 225 barras nas mesmas dimensões foram impressas com a resina Cosmos Temp, Yller (n=15) de acordo com os fatores "espessura da camada de impressão" (25µm;50µm;100µm) e "angulação" (0°; 30°; 45°; 60° e 90°). Após impressão, as amostras foram limpas com álcool isopropílico e encaminhadas ao pós-processamento em forno ultravioleta (Anycubic Wash e Cure Plus, Anycubic), por 15 minutos. As barras foram submetidas ao teste de  em máquina de ensaio universal (100KgF,1mm/min) e os dados (MPa) analisados com teste ANOVA 2 fatores, Tukey (5%) e análise de Weibull. Também foram realizadas as análises de rugosidade e estabilidade dimensional, cujos dados foram analisados pela ANOVA 2 fatores e Tukey (5%), além do MEV das superfícies. Resultados: Para a resistência à flexão, ANOVA 2 fatores revelou que o fator "Espessura da camada de impressão" (p<0,0001) foi estatisticamente significante, já o fator "Angulação" (p=0,8074) não apresentou significância estatística. Os grupos 30°/25µm (51,2±4,6AMPa), 60°/25µm (49,1±4,3ABMPa), 0°/25µm (48,6±6,6ABMPa), 90°/50µm (46,8±4,1ABCMPa) e 90°/25µm (46,2±4,9ABCMPa) apresentaram valores de  estatisticamente superiores aos grupos 0°/100µm (39,4±5,4DEFMPa), 60°/100µm (37,7±4,2DEFMPa), 90°/100µm (37,1±4,1EFMPa) e 30°/100µm (34,8±4,5FMPa), os quais foram semelhantes entre si. Para estabilidade dimensional, os grupos 0°/50µm (1746.9±61.80Aµm) e 0°/100µm (1704.7±84.30Aµm) apresentaram maiores alterações dimensionais, enquanto o grupo 90°/25µm (401.1±48.61Gµm) apresentou as menores alterações. Para rugosidade superficial, ANOVA relevou que os grupos 30°/100µm (0.90±0.10Aµm), 45°/100µm (0.79±0.07ABµm) e 60°/100µm (0.88±0.08Aµm) foram semelhantes entre si e apresentaram os maiores valores, enquanto a configuração 90°/100µm (0.23±0.08F) mostrou os menores valores. Conclusão: Quanto menor a espessura da camada de impressão, maior a resistência à flexão, independente da angulação escolhida. Adicionalmente, quanto menor a espessura da camada de impressão, maior foi a alteração dimensional, enquanto que objetos impressos verticalmente (90°) apresentam maior estabilidade dimensional. Para rugosidade superficial, quanto maior espessura da camada, maior rugosidade (AU).


Objective: To evaluate the influence of printing layer angulation and thickness on the three-point flexural strength (), dimensional stability and roughness of a printed provisional resin. Methodology: From the modeling of a bar (26 x 2.2 x 2.2mm) in Meshmixer software (Autodesk) and obtaining an STL file, it was exported to the SLA 3D printer software (Forms2/Formlabs), where 225 bars of the same dimensions were printed with Cosmos Temp resin, Yller (n=15) according to the factors "print layer thickness" (25µm;50µm;100µm) and "angulation" (0°; 30°; 45°; 60° e 90°). After printing, the samples were cleaned with isopropyl alcohol and sent to post-processing in an ultraviolet oven (Anycubic Wash and Cure Plus, Anycubic) for 15 minutes. The bars were submitted to the  test in a universal testing machine (100KgF,1mm/min) and the data (MPa) analyzed with 2-way ANOVA, Tukey (5%) and Weibull analysis. Roughness and dimensional stability analyzes were also performed, whose data were analyzed by 2- way ANOVA and Tukey (5%), in addition to the SEM of the surfaces. Results: For the flexural strength, 2-way ANOVA revealed that the factor "Print layer thickness" (p<0.0001) was statistically significant, while the factor "Angulation" (p=0.8074) did not show statistical significance. The 30°/25µm (51.2±4.6AMPa), 60°/25µm (49.1±4.3ABMPa), 0°/25µm (48.6±6.6ABMPa), 90°/50µm (46.8±4.1ABCMPa) and 90°/25µm (46.2±4.9ABCMPa) showed  values statistically higher than the 0°/100µm (39.4±5.4DEFMPa), 60°/100µm (37, 7±4.2DEFMPa), 90°/100µm (37.1±4.1EFMPa) and 30°/100µm (34.8±4.5FMPa), which were similar to each other. For dimensional stability, the 0°/50µm (1746.9±61.80Aµm) and 0°/100µm (1704.7±84.30Aµm) groups showed greater dimensional changes, while the 90°/25µm group (401.1±48.61Gµm) showed the smallest changes. For surface roughness, ANOVA revealed that the 30°/100µm (0.90±0.10Aµm), 45°/100µm (0.79±0.07ABµm) and 60°/100µm (0.88±0.08Aµm) groups were similar to each other and presented the highest values, while the 90°/100µm (0.23±0.08F) configuration showed the lowest values. Conclusion: The lower the printing layer thickness, the greater the flexural strength, regardless of the chosen angle. Additionally, the thinner the printing layer, the greater the dimensional change, while objects printed vertically (90°) have greater dimensional stability. For surface roughness, the greater the layer thickness, the greater the roughness (AU).


Subject(s)
Resins, Synthetic , Dental Materials , Printing, Three-Dimensional , Flexural Strength , Mouth Rehabilitation , Prosthodontics , In Vitro Techniques , Analysis of Variance , Dental Prosthesis
7.
Odovtos (En línea) ; 22(2)ago. 2020.
Article in Spanish | LILACS, SaludCR | ID: biblio-1386478

ABSTRACT

Resumen: Objetivo: Evaluar la percepción estética de la sonrisa según variación de la posición vertical y de la angulación del incisivo central superior (ICS) en estudiantes de odontología (EO) y personas comunes (PC) de las tres regiones del Perú. Materiales y Métodos: Diseño descriptivo, transversal. La muestra fueron 462 adultos, divididos en 77 para cada subgrupo de EO y PC de las regiones Lima (Costa), Junín (Sierra) y Loreto (Selva). Mediante el programa Photoshop se modificó una fotografía de sonrisa de mujer variando la posición vertical y angulación del ICS, obteniéndose imágenes que fueron evaluadas mediante la escala visual análoga. Resultados: Las PC calificaron mejor que los EO en la mayoría de las categorías (p<0,001). La sonrisa mejor valorada por EO en posición vertical fue a 1mm y 2mm; y para angulación 0°, mientras que para PC la de 1mm y de 0° respectivamente (p<0,05). Comparando por regiones los EO de Lima dieron la menor calificación para 0° con 52,63 y los de Junín la mayor para 4° con 45,90. Las PC de Loreto registraron el menor puntaje para las categorías de posición vertical (p<0,001), mientras que para angulación en Junín se calificó con un menor puntaje que en Loreto para -6° y 0°; y para 4° Lima brindó la menor calificación (p<0,001). Conclusiones: La percepción estética de la sonrisa es afectada por la variación de posición vertical y angulación del ICS en personas comunes y estudiantes de odontología en las tres regiones del Perú.


Abstract: Objective: To evaluate the esthetic perception of the smile according to the variation of the vertical position and the angulation of the upper central incisor (UPI) by dental students (DS) and common people (CP) of three regions of Peru. Materials and Methods: Descriptive cross-sectional design. The sample was 462 adults, divided into 77 for each subgroup of DS and CP of the Lima (Coast), Junín (Highlands) and Loreto (Rainforest) regions. Using the Photoshop® software, a photograph of a woman's smile was modified by varying the vertical position and angulation of the UPI, obtaining images that were evaluated using the analog visual scale. Results: The CP rated better than DS in most categories (p <0.001). The smile best valued by DS in a vertical position was 1mm and 2mm; and for angulation 0°, while for CP 1mm and 0° respectively (p <0.05). Comparing by regions, the DS of Lima gave the lowest rating for 0 ° with 52.63 and those of Junín the highest for 4° with 45.90. The PC of Loreto registered the lowest score for the vertical position categories (p <0.001), while for angulation in Junín it was rated with a lower score than in Loreto for -6 ° and 0°; and for 4° Lima provided the lowest rating (p <0.001). Conclusions: The esthetic perception of the smile is affected by the variation of vertical position and angulation of the ICS in common people and dental students in the three regions of Peru.


Subject(s)
Humans , Male , Female , Adult , Smiling/physiology , Vertical Dimension , Peru , Esthetics
8.
Int. j. morphol ; 38(2): 299-304, abr. 2020. tab, graf
Article in English | LILACS | ID: biblio-1056438

ABSTRACT

This study was conducted to define the proximal ulnar morphometry with respect to dorsal and intramedullary implant design. Eighty two dry Anatolian ulnae were evaluated by both the traditional and digital morphometric analysis methods. Also the medullary cavities and cortical bone thicknesses were measured from radiographic images. The mean value of ulnar length (UL) was 25.06 cm; distance between the most prominent anterior point of the superior surface of the olecranon (MAPO) and the most posterior point of the olecranon (MPPO), distance between the MPPO and maximum anterior angulation (MAA), distance between the MPPO and the maximum varus angulation (MVA) were; 1.67 cm, 5.36 cm and 7.56 cm, respectively. The average antero-posterior diameters at midolecranon plane (MOP), MAA plane (MAAP) and MVA plane (MVAP) were; 1.78 cm, 1.68 cm and 1.41 cm; transverse diameters of same planes were; 1.96 cm, 1.65 cm and 1.51 cm, respectively. The mean olecranon angle (OA), MAA and MVA were: 113.35°, 9.12° and 13.82°; also the mean circumferences at same planes were 6.48 cm, 6.37 cm and 5.16 cm, respectively. The mean antero-posterior medullary diameter at MAAP and mean transverse medullary diameter at MVAP were; 6.83 mm and 7.22 mm, respectively. Mean anterior and posterior cortical bone thicknesses at MAAP were: 3.61 mm and 4.25 mm; the mean medial and lateral cortical bone thicknesses at MVAP were: 4.06 mm and 4.13 mm, respectively. Dorsal angulation and medullary angulation of the proximal ulna presents different architecture. Unique morphological architecture of the proximal ulna should be taken into consideration in means of surgical operations and examination of radiographic images. It can be inferred that standardized bony landmarks may helpful during the process of designing and manufacturing precurved dorsal plates and as well as variable proximal ulnar implants.


Este estudio se realizó para definir la morfometría ulnar proximal con respecto al diseño de implante dorsal e intramedular. Ochenta y dos ulnas de Anatolia secas fueron evaluadas por los métodos de análisis morfométrico tradicional y digital. También se midieron las cavidades medulares y el grosor del hueso cortical a partir de imágenes radiográficas. El valor medio de la longitud ulnar (LU) fue de 25,06 cm; distancia entre el punto anterior más prominente de la superficie superior del olécranon (SSO) y el punto más posterior (PPO), la distancia entre el PPO y la angulación anterior máxima (AAM), la distancia entre el PPO y la angulación máxima en varo (AMV) fueron; 1,67 cm, 5,36 cm y 7,56 cm, respectivamente. Los diámetros anteroposteriores medios en el plano medio del olécranon (PMO), el plano AAM (AAP) y el plano AMV fueron; 1,78 cm, 1,68 cm y 1,41 cm; los diámetros transversales de los mismos planos eran; 1,96 cm, 1,65 cm y 1.51 cm, respectivamente. El ángulo medio del olécranon (AMO), AAM y MVA fueron: 113,35 °, 9,12 ° y 13,82 °; También las circunferencias medias en los mismos planos fueron 6,48 cm, 6,37 cm y 5,16 cm, respectivamente. El diámetro medular anteroposterior medio en AMV y el diámetro medular transversal medio en AMV fueron; 6,83 mm y 7,22 mm, respectivamente. Los grosores óseos corticales anteriores y posteriores medios en AMV fueron: 3,61 mm y 4,25 mm; Los espesores medios de los huesos corticales medial y lateral en AMV fueron: 4,06 mm y 4,13 mm, respectivamente. La angulación dorsal y la angulación medular de la ulna proximal presentan una arquitectura diferente. La arquitectura morfológica única de la ulna proximal debe tenerse en cuenta en las operaciones quirúrgicas con el examen de imágenes radiográficas. Se puede inferir que los puntos de referencia óseos estandarizados pueden ser útiles durante el proceso de diseño y fabricación de placas dorsales precurvadas y también de implantes ulnares proximales variables.


Subject(s)
Humans , Ulna/diagnostic imaging , Ulna/anatomy & histology
9.
Belo Horizonte; s.n; 2018. 46 p. ilus, graf.
Thesis in Portuguese | BBO - Dentistry | ID: biblio-1102711

ABSTRACT

A pericoronite é uma infecção do tecido mole associada à coroa de um dente parcialmente irrompido. É mais comumente visto em relação ao terceiro molar mandibular incompletamente irrompido, incluindo a gengiva e o folículo dental. O mucoperiósteo suprajacente e fenda resultante agem como um depósito para alimentos e detritos nos quais bactérias orais se multiplicam rapidamente. Uma reação inflamatória pode resultar de toxinas liberadas pelas bactérias. De acordo com a Classificação Internacional de Doenças, a pericoronarite pode ser classificada como pericoronarite aguda e crônica, e segundo alguns autores, as complicações podem ser de âmbito mais severo e levar a situações de risco eminente de vida. O objetivo desse estudo é fazer uma revisão literária sobre a pericoronarite, envolvendo sua etiologia, epidemiologia, microbiota, tratamentos e complicações. Pesquisa em base de dados PubMed e Bireme. De acordo com essa revisão literária, encontra-se uma posição de interessante logística sobre a pericoronarite e sua etiologia, causas, tratamento e complicações. É importante salientar a gravidade que essa condição que, aparentemente simples, pode acarretar na saúde e qualidade de vida das pessoas.


Pericoronitis is an infection of the soft tissue associated with the crown of a partially erupted tooth. It is most commonly seen in relation to the mandibular third molar incompletely erupted, including the gingiva and the dental follicle. The overlying Mucoperiosteo and resultant gap act as a deposit for food and debris in which oral bacteria multiply rapidly. An inflammatory reaction can result from toxins released by bacteria. According to the International Classification of diseases, Pericoronitis can be classified as acute and chronic pericoronitis, and according to some authors, complications may be of a more severe scope and lead to situations of imminent risk of life. The aim of this study is to do a Literary Review on Pericoronitis, involving its etiology, epidemiology, microbiota, treatments and complications. Research in PubMed and Bireme database. According to this literary review, there is a position of interesting logistics on Pericoronitis and its etiology, causes, treatment and complications. It is important to emphasize the gravity that this condition, which, apparently simple, can lead to health and quality of life.


Subject(s)
Pericoronitis , Therapeutics , Microbiota , Gingival Diseases , Inflammation , Molar, Third , Mouth Mucosa
10.
Rev. bras. ciênc. avic ; 18(3): 419-425, Jul-Set. 2016. ilus, graf
Article in English | VETINDEX | ID: biblio-1490290

ABSTRACT

The experiment was carried out with the objective of evaluating a methodology to estimate the angulation and equilibrium condition, relating them to gait score and the main diseases of the locomotion system in males and females of commercial broiler strains. A completely randomized experimental design in a factorial arrangement (2x2) was applied, consisting of two sexes and two genetic strains, with five replicates of 53 chickens each. The following characteristics related to broiler locomotion were studied: gait score (GS); incidence of Valgus (VAL) and Varus (VAR) deformities and of pododermatitis (POD); body angle relative the ground (ANG); equilibrium condition (EC); body weight (BW) and breast weight (BrW); and incidence of femoral degeneration (FD), tibial dyschondroplasia (TD) and spondylolisthesis (SPO). GS, and VAL and VAR were assessed inside a broiler house. Birds were then photographed to estimate ANG and EC. Birds were sacrificed at 42 days of age and analyzed for FD, TD, and SPO. Breast percentage was not influenced by sex or strain. Males showed better ANG than females, regardless of strain. Overall, the strains studied showed prostrated EC. The correlation between GS and the evaluated traits was low. There was a moderate to high association between EC and ANG both in males and females. GS showed low correlation with locomotion problems, and therefore, it is a poor indicator of skeletal diseases. On the other hand, the moderate to high correlations of ANG and EC with locomotion problems make them better indicators of bone diseases than gait score, which is possibly more related to EC and body posture than to bone pathologies.


Subject(s)
Animals , Postural Balance/physiology , Chickens/growth & development , Locomotion/physiology , Gait/physiology , Animal Welfare , Lameness, Animal/physiopathology , Posture
11.
R. bras. Ci. avíc. ; 18(3): 419-425, Jul-Set. 2016. ilus, graf
Article in English | VETINDEX | ID: vti-15364

ABSTRACT

The experiment was carried out with the objective of evaluating a methodology to estimate the angulation and equilibrium condition, relating them to gait score and the main diseases of the locomotion system in males and females of commercial broiler strains. A completely randomized experimental design in a factorial arrangement (2x2) was applied, consisting of two sexes and two genetic strains, with five replicates of 53 chickens each. The following characteristics related to broiler locomotion were studied: gait score (GS); incidence of Valgus (VAL) and Varus (VAR) deformities and of pododermatitis (POD); body angle relative the ground (ANG); equilibrium condition (EC); body weight (BW) and breast weight (BrW); and incidence of femoral degeneration (FD), tibial dyschondroplasia (TD) and spondylolisthesis (SPO). GS, and VAL and VAR were assessed inside a broiler house. Birds were then photographed to estimate ANG and EC. Birds were sacrificed at 42 days of age and analyzed for FD, TD, and SPO. Breast percentage was not influenced by sex or strain. Males showed better ANG than females, regardless of strain. Overall, the strains studied showed prostrated EC. The correlation between GS and the evaluated traits was low. There was a moderate to high association between EC and ANG both in males and females. GS showed low correlation with locomotion problems, and therefore, it is a poor indicator of skeletal diseases. On the other hand, the moderate to high correlations of ANG and EC with locomotion problems make them better indicators of bone diseases than gait score, which is possibly more related to EC and body posture than to bone pathologies.(AU)


Subject(s)
Animals , Postural Balance/physiology , Locomotion/physiology , Gait/physiology , Chickens/growth & development , Lameness, Animal/physiopathology , Posture , Animal Welfare
12.
Braz. dent. sci ; 18(1): 51-59, 2015. tab
Article in English | LILACS | ID: lil-759975

ABSTRACT

O objetivo do estudo foi avaliar a frequência de cárie distal no segundo molar inferior influenciada pela angulação do terceiro molar inferior adjacente em radiografias panorâmicas em uma clínica de radiologia odontológica. Material e Métodos: Foi realizado um estudo descritivo e quantitativo que analisou 750 radiografias panorâmicas, deste total, 120 estavam de acordo com o critério de inclusão da pesquisa. Resultados: De 157 segundos e terceiros molares analisados, a prevalência de cárie na distal do segundo molar foi de 25,5%. A posição mais prevalente da angulação do terceiro molar foi a vertical com 57,3%, porém, a posição com maior porcentagem do segundo molar cariado na distal foi a mesioangular com 50% dos casos. Dos elementos coletados, o gênero masculino obteve 40% de segundo molar cariado na distal contra 17% para o gênero feminino. A faixa etária de 35 anos ou mais obteve a maior incidência com 50% de cárie distal, enquanto as demais faixas obtiveram 16,21% no grupo de 18 a 24 anos e de 23,52% no de 25 a 34 anos. Conclusão: Os resultados possibilitaram estabelecer uma escala decrescente da indicação para remoção profilática do terceiro molar inferior de acordo com a angulação de Winter: horizontal, mesioangular, vertical e distoangular. Percebe-se também uma maior relevância para a indicação de remoção profilática de indivíduos do gênero masculino e com idade acima de 35 anos...


The aim of this study was to evaluate the frequency of carious lesions on the distal surface of mandibular second molars influenced by the angulation of the adjacent mandibular third molar. Material and Methods: This is a descriptive and quantitative study that analyzed 750 panoramic radiographs from a clinic providing dental radiology services. Of these, 120 radiographs met inclusion criteria of the study. Results: Of the 157 second and third molars analyzed, the presence of caries lesions on the distal of the second molar was 25.5%. The most prevalent position of the third molar angulation was vertical with 57.3%; however, the position with the highest percentage of the second molar caries on the distal area of the crown was the mesio-angular with 50% of cases. Of the collected teeth, males presented 40% of second molar caries on distal surface, while females showed 17%. The age group of ≥35 years exhibited the highest incidence with 50% of carious lesions on the distal surface, while other groups obtained 16.21% in the group 18-24 years and of 23.52% in the group 25 to 34 years. Conclusion: It was possible to establish a decreasing scale of indication for prophylactic removal of mandibular third molar according to the Winter’s lines: horizontal, mesio-angular, vertical, and distoangular. It was also noticed a greater relevance for the prophylactic removal indication of males aged over 35 years...


Subject(s)
Humans , Male , Female , Young Adult , Dental Caries , Molar , Molar, Third
13.
Dental Press J Orthod ; 18(5): 121-7, 2013.
Article in English | MEDLINE | ID: mdl-24352398

ABSTRACT

OBJECTIVE: Evaluate axial mesiodistal inclinations of the mandibular molars in orthodontically treated cases, analyzing whether inclusion of second mandibular molars in treatment mechanics has any influence on final and postretention molars angulations. METHODS: The sample comprised 150 panoramic radiographs of 50 patients. Patients were treated with extraction of four first premolars and divided into 2 groups: Group 1 comprised 25 subjects without inclusion of mandibular second molars during orthodontic treatment, whereas Group 2 comprised 25 subjects with inclusion of mandibular second molars. Panoramic radiographs at three observation times were evaluated: pretreatment, posttreatment and postretention. The statistical analysis included one-way analysis of variance (ANOVA) for intragroup evaluation and independent t-tests for intergroup comparisons. RESULTS: Intragroup analysis demonstrated significant uprighting of mandibular first and second molars during treatment in Group 2, which remained stable during the postretention stage. Intergroup comparison demonstrated that Group 2 presented first and second molars significantly more uprighted in relation to Group 1 in both post-treatment and postretention stages. CONCLUSIONS: It was concluded that inclusion of mandibular second molars in the orthodontic mechanics is relevant not only to correct the angulation of these teeth, but also to aid mandibular first molars uprighting.


Subject(s)
Malocclusion, Angle Class II/therapy , Malocclusion, Angle Class I/therapy , Molar/pathology , Orthodontic Retainers , Orthodontics, Corrective/methods , Adolescent , Analysis of Variance , Cephalometry , Child , Female , Humans , Male , Mandible , Molar/anatomy & histology , Radiography, Panoramic , Statistics, Nonparametric , Treatment Outcome
14.
Dental press j. orthod. (Impr.) ; 18(5): 121-127, Sept.-Oct. 2013. ilus, tab
Article in English | LILACS | ID: lil-697055

ABSTRACT

OBJECTIVE: Evaluate axial mesiodistal inclinations of the mandibular molars in orthodontically treated cases, analyzing whether inclusion of second mandibular molars in treatment mechanics has any influence on final and postretention molars angulations. METHODS: The sample comprised 150 panoramic radiographs of 50 patients. Patients were treated with extraction of four first premolars and divided into 2 groups: Group 1 comprised 25 subjects without inclusion of mandibular second molars during orthodontic treatment, whereas Group 2 comprised 25 subjects with inclusion of mandibular second molars. Panoramic radiographs at three observation times were evaluated: pretreatment, posttreatment and postretention. The statistical analysis included one-way analysis of variance (ANOVA) for intragroup evaluation and independent t-tests for intergroup comparisons. RESULTS: Intragroup analysis demonstrated significant uprighting of mandibular first and second molars during treatment in Group 2, which remained stable during the postretention stage. Intergroup comparison demonstrated that Group 2 presented first and second molars significantly more uprighted in relation to Group 1 in both post-treatment and postretention stages. CONCLUSIONS: It was concluded that inclusion of mandibular second molars in the orthodontic mechanics is relevant not only to correct the angulation of these teeth, but also to aid mandibular first molars uprighting.


OBJETIVO: analisar a influência da inclusão dos segundos molares inferiores durante a mecânica ortodôntica nas angulações dos molares ao final do tratamento e na fase de pós-contenção. MÉTODOS: a amostra consistiu em 150 radiografias panorâmicas de 50 pacientes avaliados antes, após o tratamento e no período de pós-contenção. Os pacientes foram tratados com extrações dos quatro primeiros pré-molares, e divididos em dois grupos: grupo 1, composto por 25 pacientes com segundo molares incluídos na mecânica ortodôntica; grupo 2, 25 pacientes cujos segundos molares não foram incluídos na mecânica ortodôntica. As angulações dos primeiros e segundos molares inferiores foram comparadas nas fases estudadas utilizando-se a Análise de Variância (análise intragrupo) e o teste t independente (análise intergrupos). RESULTADOS: a análise intragrupo, realizada no grupo 2, demonstrou que ocorreu uma verticalização significativa dos primeiros e segundos molares inferiores durante o tratamento, que se manteve estável na fase de pós-contenção. Os resultados da análise intergrupos demonstraram diferenças significativas na angulação dos primeiros e segundos molares após o tratamento e na fase de pós-contenção. CONCLUSÃO: a inclusão dos segundos molares inferiores à mecânica ortodôntica apresenta-se relevante, não apenas para corrigir a angulação desses dentes, mas, também, para auxiliar a correção da angulação dos primeiros molares permanentes.


Subject(s)
Adolescent , Child , Female , Humans , Male , Malocclusion, Angle Class I/therapy , Malocclusion, Angle Class II/therapy , Molar/pathology , Orthodontic Retainers , Orthodontics, Corrective/methods , Analysis of Variance , Cephalometry , Mandible , Molar/anatomy & histology , Radiography, Panoramic , Statistics, Nonparametric , Treatment Outcome
15.
Dental press j. orthod. (Impr.) ; 17(4): 65-71, July-Aug. 2012. ilus, tab
Article in English | LILACS | ID: lil-653503

ABSTRACT

OBJECTIVE: The aims of this study were to describe the patterns of maxillary incisor angulation in patients with upper interincisive diastemas, to evaluate angulation changes with treatment and posttreatment period, and to assess whether there are association between incisor angulation and interincisive diastema relapse. METHODS: The sample comprised 30 Class I or Class II patients with at least one pretreatment anterior diastema of 0.77 mm or greater after eruption of maxillary permanent canines. Data were obtained from panoramic radiographs at pretreatment, posttreatment and at least 2 years post-retention. RESULTS: Incisors presented a mesial tipping tendency after treatment, but only lateral incisors showed significant changes between pre and posttreatment stages. CONCLUSION: Regarding post-retention period, no changes were found. Finally, no relation was found between diastema relapse and maxillary incisor axial angulation.


OBJETIVO: esse trabalho teve por objetivo descrever o padrão de angulações mesiodistais dos incisivos superiores em pacientes com diastemas nessa área e observar as alterações dessas angulações durante e após o tratamento ortodôntico. Também objetivou analisar se existe associação entre as angulações mesiodistais desses dentes nos estágios inicial, final de tratamento e pós-contenção e a recidiva dos diastemas anterossuperiores. MÉTODOS: a amostra consistiu de 30 pacientes que foram avaliados antes do tratamento, logo após e passados 7 anos da remoção do aparelho ortodôntico. Os indivíduos apresentavam má oclusão de Classe I ou Classe II e, pelo menos, um diastema interincisivos com largura mínima de 0,77mm antes do tratamento. Além disso, os caninos superiores permanentes apresentavam a metade da coroa na cavidade bucal, no mínimo. RESULTADOS: as angulações dos incisivos apresentaram tendência à mesialização com o tratamento ortodôntico, sendo que houve diferença significativa apenas para as angulações dos incisivos laterais. No período pós-contenção, as angulações de todos os incisivos permaneceram estáveis. Não foi observada associação entre a recidiva dos diastemas e as angulações dos incisivos superiores. CONCLUSÃO: as angulações mesiodistais dos incisivos de pacientes com diastemas nessa área sofreram poucas modificações com o tratamento, havendo uma maior tendência de mesialização das coroas dos incisivos laterais. Os resultados obtidos com o tratamento permaneceram estáveis. Não houve associação entre a recidiva dos diastemas anterossuperiores e as posições mesiodistais dos dentes analisados.

16.
Dental press j. orthod. (Impr.) ; 16(3): 79-86, maio-jun. 2011. ilus, tab
Article in Portuguese | LILACS | ID: lil-596987

ABSTRACT

OBJETIVO: avaliar o nível de correlação entre a angulação dos caninos e a inclinação dos incisivos. MÉTODOS: a angulação mesiodistal dos caninos e a inclinação vestibulolingual dos incisivos foram obtidas em um programa digital gráfico (Imagetool®), a partir de fotografias padronizadas dos modelos de 60 pacientes. A inclinação dos incisivos foi, ainda, avaliada pela cefalometria lateral. RESULTADOS: o erro casual mostrou uma variação em torno de 2° nas medidas feitas nos modelos (1,8-2,5º), enquanto o erro sistemático, avaliado pela teste de correlação intraclasse, revelou uma excelente reprodutibilidade para ambos os métodos empregados (p<0,001, r=0,84-0,96). Testes de correlação linear revelaram uma correlação positiva significativa entre a angulação dos caninos e a inclinação dos incisivos para a arcada superior (r=0,3, p<0,05), e mais significativa para a arcada inferior (r=0,46-0,51, p<0,001), quando ambas foram mensuradas nos modelos. Entretanto, quando a inclinação dos incisivos foi examinada pela cefalometria, o nível de correlação foi estatisticamente insignificante para os incisivos superiores (r=-0,06-0,21, p>0,05) e variou bastante na arcada inferior (r=0,14-0,50), dependendo da grandeza correlacionada. CONCLUSÃO: ratifica-se a introdução de mudanças na angulação dos caninos com o intuito de acompanhar as compensações observadas na inclinação dos incisivos, principalmente na arcada inferior.


OBJECTIVE: To assess the degree of correlation between canine angulation and incisor inclination. METHODS: Mesiodistal angulation of canines and labiolingual inclination of incisors were obtained by means of digital graphics software (ImageTool®) from standardized photographs of the casts of 60 patients. Incisor inclination was also assessed by lateral cephalometric radiographs. RESULTS: Random error showed a variation of around 2° in measurements made on the casts (1.8-2.5), while systematic error, measured by the intraclass correlation test, displayed excellent reproducibility for both methods used in this study (p<0.001, r=0.84 to 0.96). Linear correlation tests revealed a significant positive correlation between canine inclination and incisor inclination in the maxillary arch (r=0.3, p<0.05) and even more significantly in the mandibular arch (r=0.46 to 0:51, p<0.001), when both were measured on the casts. When incisor inclination was examined by cephalometrics, correlation level was statistically insignificant for maxillary incisors (r=0.06 to 0:21, p>0.05) and varied widely in the mandibular arch (r=0.14 to 0.50). CONCLUSIONS: The introduction of changes in the angulation of canines with the aim of monitoring compensations observed in incisor inclination is warranted, especially in the lower arch.


Subject(s)
Humans , Cuspid , Incisor , Malocclusion , Tooth Movement Techniques
17.
Rev. Fac. Odontol. Univ. Antioq ; 22(2): 227-245, jun. 2011. tab
Article in Spanish | LILACS | ID: lil-598193

ABSTRACT

Se presentan métodos para calcular con mayor precisión la cantidad de desplazamiento incisal en los movimientos de inclinación bucolingual, basados en las fórmulas longitud de arco y longitud de cuerda de una circunferencia y la ley del senocon centro de rotación dinámico. Cuando se usan arcos preformados de alambre durante las fases de alineación ortodóncica, la inclinación producida sobre los dientes anteriores afecta la forma y la longitud del arco total. Actualmente, esto es un aspectopoco evaluado. Se ofrecen guías para calcular estas variaciones con el propósito de lograr análisis de espacio más exactos. Representaciones y análisis de casos refuerzan esta propuesta.


Methods are presented to calculate more precisely the quantity of incisor displacement during buccolingual inclination movements. It is based on the arc length and chord length of a circle and law of sines with dynamic rotation center formulas. When preformed archwires are used during the orthodontic alignment phases, the inclination taking place on the anterior teeth affects the form and total arch length. At present this aspect has not been evaluated in depth. Guidelines are offered to calculate these variations with the purpose of achieving a more exact space analysis. Representations and case analysis reinforce this proposal.


Subject(s)
Dental Arch
18.
Braz. dent. j ; Braz. dent. j;22(2): 146-150, 2011. ilus, tab
Article in English | LILACS | ID: lil-583804

ABSTRACT

The aims of the present study were to evaluate the angulation and inclination of permanent maxillary incisors and to correlate the results to the intra-alveolar permanent maxillary canine position during mixed dentition, using cone beam computed tomography (CBCT). The subjects were 30 children aged 7 to 10 years in the inter-transitory period of mixed dentition (permanent incisors and first molars erupted; primary canines, first and second molars erupted; and permanent canines intraosseous). The CBCT scans were obtained and, using the Dolphin Imaging® software - version 11.0, 3D images were reconstructed and the measurements were performed. The angulation of the right and left lateral and central maxillary incisors was measured in relation to the sagittal plane and their inclination was measured in relation to the coronal plane. The intra-alveolar height of the right and left maxillary canines was measured from the cusp tip to the axial plane. Pearson's correlation at 5 percent significance level showed positive correlation between the canine height and the lateral incisor angulation. It was concluded that the intra-alveolar position of the maxillary canines has a direct influence on the angulation of maxillary incisors, especially the lateral incisors.


Os objetivos deste estudo foram avaliar, por meio de tomografia computadorizada de feixe cônico (TCFC), a inclinação mésio-distal e vestíbulo-lingual dos incisivos permanente superiores e correlacionar os resultados com o posicionamento intra-ósseo do canino permanente superior na dentição mista. Foram selecionadas 30 crianças, entre 7 e 10 anos de idade, no período inicial de dentição mista, apresentando incisivos e primeiros molares permanentes erupcionados, caninos, primeiros e segundos molares decíduos presentes na cavidade bucal e caninos permanentes intra-ósseos. Foi realizada TCFC e com o software Dolphin Imaging®, versão 11.0 foi realizada a reconstrução em 3D destas imagens e feitas as medidas. A inclinação dos incisivos centrais e laterais superiores direito e esquerdo foi medida em relação ao plano sagital (angulação mésio-distal) e ao plano coronal (inclinação vestíbulo-lingual). A altura intra-óssea dos caninos superiores direito e esquerdo foi medida da ponta da cúspide ao plano axial. Para análise da correlação entre a angulação dos incisivos e altura dos caninos foi utilizado o teste de correlação de Pearson, ao nível de significância de 5 por cento. Pode-se concluir que a posição intra-óssea dos caninos superiores sugere influência direta na inclinação dos incisivos superiores, principalmente nos incisivos laterais.


Subject(s)
Child , Female , Humans , Male , Cone-Beam Computed Tomography , Cuspid , Incisor/growth & development , Tooth, Unerupted , Cuspid/growth & development , Dentition, Mixed , Incisor , Maxilla
19.
Dental press j. orthod. (Impr.) ; 15(5): 109-117, set.-out. 2010. ilus, graf, tab
Article in Portuguese | LILACS | ID: lil-562901

ABSTRACT

OBJETIVO: determinar as angulações mesiodistais das coroas dos caninos em indivíduos portadores de má oclusão de Classe III, comparando-os a indivíduos Classe I. MÉTODOS: foram empregadas medidas tomadas em fotografias digitalizadas de modelos de gesso e transportadas para um programa gráfico para leitura das medidas (Image Tool). Tais procedimentos foram repetidos para avaliação do erro do método casual (fórmula de Dahlberg) e para a análise da reprodutibilidade através da Correlação intraclasse. A amostra constituiu-se de 57 pacientes com dentição permanente completa e não tratados ortodonticamente, dividida em dois grupos, de acordo com a má oclusão apresentada: o grupo I foi constituído por 33 pacientes portadores de má oclusão de Classe I, sendo 16 do sexo masculino e 17 do feminino, com média de idades de 27 anos; o grupo II era representado por 24 pacientes portadores de má oclusão de Classe III, 20 do sexo masculino e 4 do feminino, com média de idades de 22 anos. RESULTADOS: o erro casual mostrou-se com uma variação de 1,54 a 1,96 graus para a angulação dos caninos. A análise estatística revelou que o método apresenta uma excelente reprodutibilidade (p<0,01). Os resultados obtidos na angulação da coroa dos caninos não mostraram diferença estatisticamente significativa entre os caninos superiores nos grupos Classe I e Classe III, embora esse dente mostrasse, em média, uma angulação 2 graus maior nos indivíduos Classe III. Entretanto, para os caninos inferiores, foi observada uma diferença estatisticamente significativa em ambos os lados (p=0,0009 e p=0,0074) entre os grupos Classe I e Classe III. Os pacientes Classe III apresentaram uma menor angulação nos caninos inferiores em comparação aos pacientes Classe I, tendendo a acompanhar a compensação natural dos incisivos, descrita rotineiramente na literatura. CONCLUSÃO: os resultados permitem concluir que as compensações dentárias, frequentemente observadas na literatura para a região de incisivos, se estendem também à angulação dos caninos, principalmente no que se refere à arcada inferior.


OBJECTIVES: This study aimed to determine the mesiodistal angulation of canine crowns in individuals with Class III malocclusion in comparison with Class I individuals. METHODS: Measurements were taken from digital photographs of plaster models and imported into an imaging program (Image Tool). These procedures were repeated to assess random method error (Dahlberg's formula), and analyze reproducibility by intraclass correlation. The sample consisted of 57 patients with complete permanent dentition, untreated orthodontically and divided into two groups according to their malocclusion: Group I consisted of 33 patients with Class I malocclusion, 16 males and 17 females, mean age 27 years; Group II comprised 24 patients with Class III malocclusion, 20 males and 4 females, mean age 22 years. RESULTS: Random error for canine angulation ranged from 1.54 to 1.96 degrees. Statistical analysis showed that the method presented an excellent reproducibility (p<0.01). Results for canine crown angulation showed no statistically significant difference between maxillary canines in the Class I and Class III groups, although canine angulation exhibited, on average, 2 degrees greater angulation in Class III individuals. Mandibular canines, however, displayed a statistically significant difference on both sides between Class I and Class III groups (p = 0.0009 and p = 0.0074). Compared with Class I patients, angulation in Class III patients was lower in mandibular canines and tended to follow the natural course of dentoalveolar compensation, routinely described in the literature. CONCLUSION: The results suggest that dental compensation often found in literature involving the incisors region, also affects canine angulation, especially in the lower arch.


Subject(s)
Humans , Male , Female , Adult , Cuspid , Malocclusion, Angle Class II , Malocclusion, Angle Class III , Mesial Movement of Teeth , Casts, Surgical , Tooth Crown , Orthodontic Brackets , Photography, Dental , Radiography, Dental, Digital
20.
Rev. dent. press ortodon. ortopedi. facial ; 14(6): 97-108, nov.-dez. 2009. ilus, tab, graf
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-533076

ABSTRACT

OBJETIVOS: comparar os valores médios normais das angulações mesiodistais dentárias, propostos por Ursi, em 1989, com as angulações mesiodistais de caninos, pré-molares e molares inferiores em indivíduos com e sem a presença dos terceiros molares inferiores e idades entre 18 e 25 anos. Além disso, foram comparados os valores das angulações mesiodistais desses dentes nessas duas situações. MÉTODOS: foram utilizadas 40 radiografias ortopantomográficas de indivíduos, de ambos os gêneros, que não receberam tratamento ortodôntico, divididos em dois grupos: Grupo I, constituído por 20 radiografias que não apresentavam os terceiros molares inferiores; e Grupo II, formado por 20 radiografias com os terceiros molares inferiores presentes. RESULTADOS E CONCLUSÕES: a análise dos resultados e a análise estatística permitiram concluir que ambos os grupos exibiram pré-molares e molares inferiores mais angulados em sentido mesial, quando comparados à oclusão normal. Por outro lado, a angulação mesiodistal de caninos inferiores mostrou-se semelhante àquela apresentada em casos de oclusão normal. Os dois grupos, quando comparados entre si, exibiram semelhantes valores angulares dos caninos, pré-molares e molares inferiores, de modo que a presença dos terceiros molares não exerceu influência sobre essas angulações mesiodistais dentárias.


AIM: To compare the normal mean values of the mesiodistal axial angulation, proposed by Ursi in 1989, with the mesiodistal axial angulation of canine teeth, premolar and inferior molars in individuals with and without the presence of the third inferior molars and ages between 18 and 25 years. Besides, the values of the mesiodistal axial angulation of these teeth were compared in these two situations. METHODS: Forty panoramic x-rays were used from individuals of both genders that didn't receive orthodontic treatment, divided in two groups: Group I, constituted by 20 x-rays that didn't present the third inferior molars, and Group II, formed by 20 x-rays with the presence of the third inferior molars. RESULTS AND CONCLUSIONS: The results analysis and the statistical analysis allowed to conclude that both Groups exhibited inferior premolar and molars more angled in mesial direction when compared to the normal occlusion. On the other hand, the mesiodistal axial angulation of inferior canine teeth was similar to the presented in cases of normal occlusion. The two groups, when compared amongst themselves, exhibited similar angular values of the canine teeth, premolar and inferior molars, so that the presence of the third molars didn't exercise influence on these dental angulations.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Cuspid , Molar , Tooth Movement Techniques , Radiography, Panoramic
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