10 research outputs found
Influence of orthopedic treatment on hard and soft facial structures of individuals presenting with Class II, Division 1 malocclusion: a comparative study A influĂȘncia do tratamento ortopĂ©dico nas estruturas faciais de indivĂduos com mĂĄ oclusĂŁo de Classe II, 1ª DivisĂŁo: um estudo comparativo
The purpose of this investigation was to comparatively evaluate the cephalometric changes in soft and hard tissues related to treatment of Class II, division 1 malocclusion with activator-headgear and Bionator appliances. Twenty-four individuals formed the activator-headgear group and twenty-five comprised the Bionator group, while other twenty-four presenting the same malocclusion did not receive any intervention and served as controls. Lateral headfilms were taken at the beginning and at the end of the observation period and were digitized with computerized cephalometrics; cephalometric analysis was performed and the results were submitted to statistical test. According to the methodology employed, our findings suggested that both appliances do not significantly alter the growth path, and also they were not able to modify the posterior inferior height and the sagittal and vertical position of the upper lip. The lower lip and the soft menton were only slightly modified by the orthopedic appliances, but the mentolabial sulcus showed a significant decrease in deepness compared to the control group. Of statistical significance, only the anterior inferior hard and soft facial heights and the lower lip height increased more in the treated groups.<br>Esta pesquisa teve por objetivo avaliar, comparativamente, as alteraçÔes cefalomĂ©tricas tegumentares e esquelĂ©ticas, decorrentes do tratamento das mĂĄs oclusĂ”es de classe II, 1a divisĂŁo, com o ativador combinado com a ancoragem extrabucal e com o bionator. O grupo tratado com o ativador combinado com a ancoragem extrabucal foi composto por 24 indivĂduos e o grupo tratado com o bionator compreendeu 25 pacientes, enquanto que outros 24 indivĂduos compuseram o grupo controle, apresentando a mesma mĂĄ oclusĂŁo, porĂ©m sem terem sido submetidos a nenhuma terapia ortodĂŽntica. Obteve-se telerradiografias laterais de todos os indivĂduos no inĂcio e final do perĂodo de observação que foram digitalizadas e seus traçados cefalomĂ©tricos computadorizados realizados e submetidos ao teste estatĂstico. De acordo com a metodologia empregada, os resultados sugerem que ambos os aparelhos nĂŁo foram capazes de alterar, significaticamente, o padrĂŁo de crescimento facial assim como a altura facial posterior inferior e o posicionamento sagital e vertical do lĂĄbio superior. Os aparelhos ortopĂ©dicos alteraram ligeiramente o lĂĄbio inferior e o mento tegumentar, porĂ©m o sulco mentolabial foi signifivativamente reduzido nos grupos tratados em comparação com o grupo controle. As alturas faciais esquelĂ©tica e tegumentar, bem como a altura do lĂĄbio inferior foram significativamente aumentadas com a terapia ortopĂ©dica, alcançando diferença estatĂstica em relação ao grupo controle
Long-term 3D cast model study: bone-borne vs. tooth-borne surgically assisted rapid maxillary expansion due to secondary variables
Nuclear galectin-3 expression is an independent predictive factor of recurrence for adenocarcinoma and squamous cell carcinoma of the lung.
The tumor stage is the most powerful prognostic tool for predicting the survival rates of lung carcinoma patients. However, prognosis of individual patients is difficult in part because of the marked clinical heterogeneity among such patients. Galectins are involved in cell growth, apoptosis and cell migration features, and their diagnostic and prognostic values have already been demonstrated in various types of cancers. In the present paper we analyze the potential prognostic value of immunohistochemical galectin-3 expression in lung adenocarcinomas and squamous cell carcinomas. In all, 165 squamous cell carcinomas and 121 adenocarcinomas were immunostained for galectin-3. In each case the immunohistochemical analyses consisted of an evaluation of the percentage of tumor cells stained and the intensity of staining. An IP score (ie Intensity x Percentage) was thus determined for each lung carcinoma. A large majority of cases displayed galectin-3 expression. While the cytoplasmic staining in the squamous cell carcinomas was focal and moderately intense, the staining in the adenocarcinomas was diffuse and intense. The IP scores were significantly (P=0.0001) higher in the adenocarcinomas than in the squamous cell carcinomas. The difference in nuclear expression profiles between the two cancer types was statistically significant (P=0.0005). Cox multivariate analysis carried out on the patients' genders, the TNM classification and the galectin-3-related variables showed that of the galectin-3-related variables, only the nuclear location of galectin-3 was identified as a prognostic indicator of recurrence independent of the clinicopathological features characterizing the patients (P=0.02). The prognostic contribution of this latter variable was enhanced when the patients with relapse-free follow-ups longer than 8 months were considered (P=0.005). Galectin-3 immunohistochemical expression differs between squamous cell carcinomas and adenocarcinomas, but the nuclear expression of galectin-3 behaves as a significant prognostic predictor for all the cases as a group.Journal ArticleResearch Support, Non-U.S. Gov'tinfo:eu-repo/semantics/publishe