Premaxilla: up to which age it remains separated from the maxilla by a suture, how often it occurs in children and adults, and possible clinical and therapeutic implications: Study of 1,138 human skulls

Autor: Mariana Trevizan, Paulo Nelson Filho, Solange de Oliveira Braga Franzolin, Alberto Consolaro
Jazyk: English<br />Portuguese
Předmět:
Zdroj: Dental Press Journal of Orthodontics, Vol 23, Iss 6, Pp 16-29
Druh dokumentu: article
ISSN: 2177-6709
DOI: 10.1590/2177-6709.23.6.016-029.oin
Popis: ABSTRACT Objective: To evaluate topographic and temporal aspects of premaxillary bone and premaxillary-maxillary suture, since they are fundamental anatomical elements little explored clinically. Methods: 1,138 human dry skulls were evaluated, of which 116 (10.19%) of the specimens were children, and 1,022 (89.81%) were adults. The skulls were photographed and the percentage of premaxillary-maxillary suture opening was determined. Subsequently the data were tabulated and submitted to statistical analysis, adopting a level of significance of 5%. Results: The progression of premaxillary suture closure from birth to 12 years of age was 3.72% per year. In 100% of the skulls up to 12 years, the premaxillary-maxillary suture open in the palatal region was observed, while 6.16% of adults presented different degrees of opening. Conclusions: The premaxilla exists in an independent way within the maxillary complex and the presence of the premaxilla-maxillary suture justifies the success of anteroposterior expansions to stimulate the growth of the middle third of the face, solving anatomical and functional problems.
Databáze: Directory of Open Access Journals