Percorrer por autor "Retto, Paulo Fernandes"
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- Criteria for early diagnosis of third molar agenesis : a retrospective radiographic studyPublication . Dumas, Margaux; Pereira, Pedro Mariano; Bugaighis, Iman; Retto, Paulo Fernandes; Proença, LuísObjective: To explore the association between chronological, dental and skeletal ages and early diagnosis of third molars agenesis. Material and methods: This retrospective radiographic study comprised a sample of 282 Portuguese patients (122 males and 160 females) who sought orthodontic treatment between 2007 and 2018. Each participant had panoramic and lateral cephalometric radiographs performed before and after the age of 14 years. The chronological age was categorized into three intervals between 11.0 and 13.11 years of age. The full eruption of the four-second molars was used as a criterion in determining dental age. Skeletal age was verified by the vertebral maturation method. The diagnosis of agenesis of third molars was initially performed by observation of the initial panoramic radiography undertaken before the age of 14 years. Subsequently, the diagnosis of agenesis of third molars was confirmed by visualizing the second panoramic radiography, obtained after the age of 14 years. The association between the accuracy of the diagnosis and the chronological, dental and skeletal ages was evaluated using the chi-square test, at a 5% significance level. Results: No significant association between chronological age and alterations in the diagnosis of third molar agenesis was identified. However, there was a significant association between third molar agenesis and both dental age (p<0.001) and skeletal age (p=0.006). Conclusion: The eruption of the four-second molars and the peak of growth could be considered as criteria for early diagnosis of third molar agenesis, whereas chronological age is not a reliable diagnostic indicator.
- Ortodontia plástica - conceito e diferentes sistemasPublication . Pereira, Dinis; Fernandes, Margarida; Gaudêncio, Filipa; Retto, Paulo Fernandes; Delgado, Ana SintraA necessidade de tratamento ortodôntico, na maioria dos pacientes, prende-se com a procura de alinhamento dentário ou de estética facial. A pouca popularidade dos aparelhos fixos tradicionais metálicos entre os pacientes deve-se ao reduzido sentido estético e receio de dor. Os aparelhos plásticos transparentes são uma boa alternativa (especialmente em jovens adultos com dentição permanente) para proceder ao tratamento ortodôntico, na medida em que não levantam tantas questões estéticas. Porém, há sistemas de ortodontia plástica que apresentam limitações e apenas tratam casos simples a nível anterior ou recidivas após tratamento ortodôntico. Existem assim vários sistemas que conseguem corrigir diversos tipos de maloclusões mais severas, mas o clínico tem que estar ciente sempre das limitações e decidir qual o sistema viável para proceder ao tratamento com ortodontia plástica.