Browsing by Author "Pereira, Pedro Mariano"
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- Associação da má oclusão de Classe II Divisão 2 com anomalias do desenvolvimento dentárioPublication . Pereira, Pedro Mariano; Ferreira, Afonso Pinhão; Tavares, Purificação; Braga, Ana Cristina
- Avaliação da perceção estética da posição labial sagital em diferentes painéis de observadoresPublication . Viegas, Marta; Pereira, Pedro Mariano
- Avaliação da perceção estética do perfil facial em diferentes painéis de observadoresPublication . Viegas, Marta M.; Pereira, Pedro Mariano; Proença, LuísObjetivo: Avaliar se a perceção estética da convexidade do perfil facial é semelhante entre os diferentes painéis de avaliadores. Métodos: Foram utilizadas silhuetas de perfil construídas no programa Adobe Photoshop Cs5®. A partir de um perfil de referência com 12° de convexidade facial foram criadas 4 silhuetas com convexidade de 0°, 6°, 18° e 24°. Foram avaliadas por especialistas em ortodontia, estudantes de medicina dentária e por um grupo de controlo que representa a população em geral, mediante um questionário online. Resultados: Verificaram‐se diferenças estatisticamente significativas entre grupos quanto à perceção estética da convexidade do perfil facial. Os especialistas em ortodontia e os estudantes de medicina dentária consideram mais estético o perfil de convexidade 12°. A população em geral prefere o perfil de 18°. Conclusões: A perceção estética da convexidade do perfil facial não é idêntica para os especialistas em ortodontia, estudantes de medicina dentária e para o grupo de controlo que representa a população geral.
- Avaliação de perceção estética do perfil facial em diferentes painéis de observadoresPublication . Viegas, Marta; Pereira, Pedro Mariano
- Different manifestations of Class II Division 2 incisor retroclination – Morphologic studyPublication . Pereira, Pedro Mariano; Ferreira, Afonso Pinhão; Tavares, Purificação; Braga, Ana Cristina"Introduction: The aim of the present study was to investigate whether there is a different transverse morphologic pattern of dental arches among the different manifestations of Class II Division 2 incisor retroclination and evaluate to what extent the pattern of smaller-than-average teeth in Class II Division 2 malocclusion is common to all groups studied. This information may clarify whether different Class II Division 2 phenotypes represent a single etiology or multiple etiologies. Methods: The sample comprised 108 Class II Division 2 malocclusions which were divided into two groups according to the type of incisor retroclination: Group I composed of 43 Class II Division 2 with retroclination exclusively of the maxillary central incisors; Group II composed of 65 Class II Division 2 with retroclination of the four maxillary incisors. Maxillary and mandibular intercanine and intermolar widths as well as the mesiodistal crown dimension of the four maxillary and mandibular incisors were determined using the initial study models of patients. Mean values of all variables were compared between the two groups by gender using ANOVA. Results: From the comparison between the two groups analyzed, no statistically significant differences were found for all transverse measurements (p>0.05). For all mesiodistal measurements analyzed, statistically significant differences between the groups were only found for the mean value of both maxillary lateral incisors mesiodistal dimension in both sexes (p<0.05). Conclusions: It is not possible to attribute a characteristic pattern of dental arch width and of incisor mesiodistal dimension to the different manifestations of incisor retroclination in Class II Division 2 malocclusion."
- Different manifestations of class II division 2 incisor retroclination and their association with dental anomaliesPublication . Pereira, Pedro Mariano; Ferreira, Afonso Pinhão; Tavares, Purificação; Braga, Ana Cristina"Objective: To investigate whether there is an association between dental development anomalies (DDAs) and the different manifestations of Class II Division 2 (CII/2) malocclusion incisor retroclination. This information may clarify whether the different CII/2 phenotypes, with regard to maxillary incisor retroclination, are a single clinical entity or etiologically different entities. Design: Retrospective comparative study. Setting: Private orthodontic practice in the regions of Lisbon and Porto, Portugal Subjects and Methods: The sample comprised 115 CII/2 malocclusions distributed into 2 groups on the basis of incisor retroclination: Group I composed of 48 CII/2 with retroclination exclusively of both maxillary central incisors; Group II composed of 67 CII/2 with retroclination of all four maxillary incisors. Using the initial orthodontic records, it was determined for each patient the presence of the following DDAs: tooth impaction, tooth agenesis, maxillary lateral incisor microdontia, tooth transpositions and supernumerary teeth. Results: 55.0% of patients were diagnosed with at least one of the DDAs studied. In the total sample the prevalence rates were determined as follows: 20.0% of palatal maxillary canine impaction, 27.4% of third molar agenesis, and 15.7% of maxillary lateral incisor microdontia. No patient exhibited any transpositions or supernumerary teeth. The distribution of the DDAs studied by groups revealed a strong association of palatal canine impaction, tooth agenesis and maxillary lateral incisor microdontia with Groups II but not with Group I. Conclusion: The association of DDAs with CII/2 malocclusion is not common to all types of maxillary incisor retroclination, suggesting different etiologic bases among the different manifestations of CII/2 malocclusion incisor retroclination."
- Impacto do tratamento ortodôntico na qualidade de vida dos pacientesPublication . Garrau, J.; Pereira, Pedro Mariano
- Miniscrew-assisted rapid palatal expansion (MARPE) : an umbrella reviewPublication . Ventura, Vanda; Botelho, João; Machado, Vanessa; Mascarenhas, Paulo; Pereira, François Durand; Mendes, José João; Delgado, Ana Sintra; Pereira, Pedro MarianoIn postpubertal patients, maxillary transverse discrepancy is a common condition often requiring surgical approaches. To overcome the excess morbidity and discomfort, maxillary expansion through miniscrew-assisted rapid palatal expansion (MARPE) was proposed and studied in the last few years. This umbrella review aims to critically appraise the quality of evidence and the main clinical outcomes of available systematic reviews (SRs) on MARPE. An extensive search was carried out in five electronic databases (PubMed-Medline, Cochrane Database of SRs, Scielo, Web of Science, and LILACS) until December 2021. The methodological quality was appraised using the A Measurement Tool to Assess SRs criteria 2 (AMSTAR2). The primary outcome was the methodological quality of SRs. Overall, four SRs were included and analyzed, one of high methodological quality, one of low and two of critically low. Despite the verified methodological constraints, MARPE seems to present significant clinical changes when compared to conventional RPE, SARPE or controls and less adverse clinical outcomes. The quality of evidence produced by the available SRs was not favorable. Future high standard SRs and well-designed clinical trials are warranted to better clarify the clinical protocols and outcomes success of MARPE.
- Perception of need for further refinement in a clear aligner treatment among orthodontists, dentists and laypeople : a retrospective studyPublication . Oliveira, Patrícia; Bugaighis, Iman; Costa, Hélder Nunes; Pereira, Pedro MarianoClear aligner treatment often requires further refinement to improve the orthodontic treatment outcome. However, the perceptions of treatment outcomes evaluated by orthodontists and dentists are sparse, and laypeople’s perceptions have yet to be explored. Here, we explore the perceptions of orthodontists, dentists, and laypeople concerning the treatment outcomes achieved after completing the first sequence of aligners. This cross-sectional study involved 37 orthodontists, 67 dentists, and 93 laypeople. We administered an online questionnaire containing intra-oral photographs of nine completed cases with pre- and post-first sequences of aligners. As a control, we used a digital prediction system for the treatment outcome. Self-perception was reported using a visual analog scale. Both orthodontists and dentists had similar perceptions about treatment outcomes (p = 0.363) but significantly differed from laypeople (p ≤ 0.0001). Both orthodontists and dentists recommended further treatment; orthodontists were more critical than dentists (p ≤ 0.001). Orthodontists were more critical than dentists in their evaluations of the need for further treatments; however, their perceptions of treatment outcomes were similar. Laypeople were more satisfied with the treatment outcomes, were less concerned with occlusion, and were more focused on the aesthetic results of the treatment.