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Publicação
Análise das dimensões de coroas de primeiros molares permanentes em modelos de estudo digitais: estudo transversal
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| Projeto de pós-graduação_41301 | 2.26 MB | Adobe PDF |
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Resumo(s)
Introdução: A utilização de modelos digitais obtidos por scanners intraorais tem vindo a transformar a análise morfométrica dentária, oferecendo medições rápidas, fiáveis e não invasivas. O primeiro molar permanente, considerado um elemento-chave na oclusão, assume particular relevância na Odontopediatria.
Objetivo: Avaliar as dimensões mesiodistal, vestíbulolingual/palatina e altura das coroas de primeiros molares permanentes de um grupo de crianças com idades entre os 7 e os 13 anos, utilizando imagens de scanners intraorais. Analisar se existem diferenças significativas nas medições com base em variáveis como dismorfismo sexual, diferenças entre o lado direito e esquerdo da arcada dentária e as diferenças entre a arcada superior e inferior.
Materiais e métodos: Para este estudo foram utilizados ficheiros STL gerados a partir de modelos tridimensionais. Foram avaliadas digitalmente as dimensões mesiodistal, vestibulolingual/palatina e altura da coroa usando um software de análise de imagens tridimensionais. Foi também realizada uma pesquisa bibliográfica nas bases de dados Pubmed e B-on a recolha da literatura de apoio à fundamentação teórica do tema em análise.
Resultados: O presente estudo evidenciou a presença de dismorfismo sexual, com dimensões dentárias superiores nos rapazes. Verificou-se elevada simetria bilateral entre molares homólogos das mesmas arcadas, em contraste com a comparação entre a arcada superior e inferior, na qual verificou-se uma discrepância estatisticamente significativa. Verificaram-se correlações positivas e estatisticamente significativas, entre algumas medidas, noutras não se observaram correlações fiáveis. A análise por faixa etária indicou um aumento dimensional em várias regiões dentárias com o crescimento sugerindo influência do desenvolvimento dentário. Conclusão: Este estudo contribui para o aprofundamento do conhecimento sobre as dimensões dos primeiros molares permanentes em idade pediátrica, evidenciando diferenças nas dimensões relevantes entre sexos, arcadas e faixas etárias, auxiliando na seleção precisa de coroas metálicas pré-formadas e na implementação de tratamentos restauradores individualizados.
Introduction: The use of digital models obtained through intraoral scanners has been transforming dental morphometric analysis, offering fast, reliable, and non-invasive measurements. The first permanent molar, considered a key element in occlusion, holds particular relevance in Paediatric Dentistry. Objective: To assess the mesiodistal, buccolingual/palatal, and crown height dimensions of the first permanent molars in a group of children aged between 7 and 13 years, using images obtained from intraoral scanners. To analyse whether there are significant differences in the measurements based on variables such as sexual dimorphism, differences between the right and left sides of the dental arch, and differences between the upper and lower arches. Materials and Methods: STL files generated from three-dimensional models were used in this study. The mesiodistal, buccolingual/palatal, and crown height dimensions were digitally measured using 3D image analysis software. A literature review was also conducted using the PubMed and B-on databases to support the theoretical framework of the study. Results: This study demonstrated the presence of sexual dimorphism, with larger dental dimensions observed in boys. A high degree of bilateral symmetry was observed between homologous molars in the same arch. In contrast, a statistically significant discrepancy was found when comparing the upper and lower arches. Positive and statistically significant correlations were found between some measurements, while others showed no reliable correlations. Age group analysis indicated dimensional increases in various dental regions with growth, suggesting the influence of dental development. Conclusion: This study contributes to the understanding of the dimensions of first permanent molars in the paediatric population, highlighting relevant differences according to sex, arch, and age group. These findings may support the accurate selection of preformed metal crowns and the implementation of individualised restorative treatments.
Introduction: The use of digital models obtained through intraoral scanners has been transforming dental morphometric analysis, offering fast, reliable, and non-invasive measurements. The first permanent molar, considered a key element in occlusion, holds particular relevance in Paediatric Dentistry. Objective: To assess the mesiodistal, buccolingual/palatal, and crown height dimensions of the first permanent molars in a group of children aged between 7 and 13 years, using images obtained from intraoral scanners. To analyse whether there are significant differences in the measurements based on variables such as sexual dimorphism, differences between the right and left sides of the dental arch, and differences between the upper and lower arches. Materials and Methods: STL files generated from three-dimensional models were used in this study. The mesiodistal, buccolingual/palatal, and crown height dimensions were digitally measured using 3D image analysis software. A literature review was also conducted using the PubMed and B-on databases to support the theoretical framework of the study. Results: This study demonstrated the presence of sexual dimorphism, with larger dental dimensions observed in boys. A high degree of bilateral symmetry was observed between homologous molars in the same arch. In contrast, a statistically significant discrepancy was found when comparing the upper and lower arches. Positive and statistically significant correlations were found between some measurements, while others showed no reliable correlations. Age group analysis indicated dimensional increases in various dental regions with growth, suggesting the influence of dental development. Conclusion: This study contributes to the understanding of the dimensions of first permanent molars in the paediatric population, highlighting relevant differences according to sex, arch, and age group. These findings may support the accurate selection of preformed metal crowns and the implementation of individualised restorative treatments.
Descrição
Palavras-chave
Primeiros molares permanentes Dimensões dentárias Dismorfismo sexual Dentição permanente First permanent molars Dental dimensions Sexual dimorphism Permanent dentition