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There are no tooth size\/tooth ratio normative standards for the Hispanic population, despite overwhelming evidence about differences in tooth size between racial groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>This study aimed to determine whether there are significant differences in 3-D tooth shape between patients with Angle Class I, Class II, and Class III dental malocclusion in the Hispanic population.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methodology<\/jats:title><jats:p>Orthodontic study models representing Hispanic orthodontic patients with Angle Class I, II, and III dental malocclusions scanned using an intra-oral scanner. The scanned models were digitized and transferred to a geometric morphometric system. Tooth size shape were determined, quantified, and visualized using contemporary geometric morphometric computational tools using MorphoJ software. General Procrustes Analysis (GPA) and canonical variates analysis (CVA) used to delineate the features of shape that are unique to each group.<\/jats:p><\/jats:sec><jats:sec><jats:title>Result<\/jats:title><jats:p>The study revealed differences in tooth shape between the different dental malocclusion groups on all twenty-eight teeth that were studied; the pattern of shape differences varied between the teeth and the dental malocclusions. The MANOVA test criteria, F approximations, and P-values show that shape in all the groups was significantly different\u2009&lt;\u20090.05.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This study revealed differences in tooth shape between the different dental malocclusions on all teeth, and the pattern of shape differences varied between the different dental malocclusions group.<\/jats:p><\/jats:sec>","DOI":"10.1186\/s12903-023-02882-7","type":"journal-article","created":{"date-parts":[[2023,4,3]],"date-time":"2023-04-03T14:03:10Z","timestamp":1680530590000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Morphometric analysis of tooth morphology among different malocclusion groups in a hispanic population"],"prefix":"10.1186","volume":"23","author":[{"given":"Hesham","family":"Alsaigh","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Murad","family":"Alrashdi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,4,3]]},"reference":[{"key":"2882_CR1","doi-asserted-by":"publisher","first-page":"5739312","DOI":"10.1155\/2020\/5739312","volume":"2020","author":"P Amornvit","year":"2020","unstructured":"Amornvit P, Sanohkan S, Peampring C. 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