A. Pinhão Ferreira

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OBJECTIVE Facial-type-associated variations in diagnostic features have several implications in orthodontics. For example, in hyperdivergent craniofacial types, growth imbalances are compensated by displacement of the condyle. When diagnosis and treatment planning involves centric relation (CR), detailed knowledge of the condylar position is desirable. The(More)
Lateral cephalometric radiography is commonly used as a standard tool in orthodontic assessment and treatment planning. The aim of this study was to evaluate the available scientific literature and existing evidence for the validation of using lateral cephalometric imaging for orthodontic treatment planning. The secondary objective was to determine the(More)
OBJECTIVE To evaluate the impact of additional lateral cephalometric radiography in orthodontic diagnosis and treatment planning. MATERIALS AND METHODS Forty-three patients seeking orthodontic treatment, and for whom pretreatment diagnostic records were available, were randomly selected. Ten qualified orthodontists were involved in this study. The(More)
INTRODUCTION Anterior open bite (AOB) is a vertical malocclusion that requires thorough diagnosis to ensure long-term stability. The aim of this study was to determine the prevalence of AOB in Portuguese children during deciduous and mixed dentition in order to assess the need for orthodontic treatment and to determine its relation to other associated(More)
AIM Anterior open bite (AOB) is an occlusal anomaly commonly associated with oral habits (OH). The aim of this study was to determine the prevalence of OH as a risk factor for the AOB. MATERIALS AND METHODS A group of children aged between 3 and 12 years were observed. The statistical methodology included independent chi-square test, Fisher's exact test(More)
OBJECTIVE To investigate whether there is an association between dental developmental anomalies (DDAs) and different manifestations of class II division 2 (CII/2) malocclusion incisor retroclination. DESIGN Retrospective comparative study. SETTING Private orthodontic practice in the regions of Lisbon and Porto, Portugal. SUBJECTS AND METHODS The(More)
PURPOSE The aim this study was to compare the accuracy of orthodontists and dentomaxillofacial radiologists in identifying 17 commonly used cephalometric landmarks, and to determine the extent of variability associated with each of those landmarks. MATERIALS AND METHODS Twenty digital lateral cephalometric radiographs were evaluated by two groups of(More)
OBJECTIVE To quantify, for each activation, the effect of preactivations of differing distribution and intensity on the neutral position of T-loops (7-mm height), specifically the horizontal force, moment to force (M/F) ratio, and load to deflection ratio. METHODS A total 100 loops measuring 0.017 × 0.025 inches in cross-section were divided into two(More)
INTRODUCTION The aim of this study was to determine a differential diagnostic model for anterior open bite (AOB) in children in order to predict evolution with growth in cases of skeletal or dysfunctional dysplasia. MATERIAL AND METHODS The sample was composed of 128 subjects divided into 2 groups according to overbite values: a control group with normal(More)