dc.contributor |
Universitat de Barcelona |
dc.contributor.author |
Molina Berlanga, Núria |
dc.contributor.author |
Llopis Pérez, Jaume |
dc.contributor.author |
Flores Mir, Carlos |
dc.contributor.author |
Puigdollers Pérez, Andreu |
dc.date |
2013-11-26T14:47:21Z |
dc.date |
2013-11-26T14:47:21Z |
dc.date |
2013-10-01 |
dc.date |
2013-11-26T14:47:21Z |
dc.identifier.citation |
0003-3219 |
dc.identifier.citation |
630021 |
dc.identifier.uri |
http://hdl.handle.net/2445/48087 |
dc.format |
8 p. |
dc.format |
application/pdf |
dc.language.iso |
eng |
dc.publisher |
Allen Press Inc. |
dc.relation |
Reproducció del document publicat a: http://dx.doi.org/10.2319/011913-48.1 |
dc.relation |
The Angle Orthodontist, 2013, vol. 83, num. 6, p. 948-955 |
dc.relation |
http://dx.doi.org/10.2319/011913-48.1 |
dc.rights |
(c) The E. H. Angle Education and Research Foundation , 2013 |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Dents |
dc.subject |
Maloclusió |
dc.subject |
Maxil·lars |
dc.subject |
Teeth |
dc.subject |
Malocclusion |
dc.subject |
Jaws |
dc.title |
Lower incisor dentoalveolar compensation and symphysis dimensions among Class I and III malocclusion patients with different facial vertical skeletal patterns |
dc.type |
info:eu-repo/semantics/article |
dc.type |
info:eu-repo/semantics/publishedVersion |
dc.description.abstract |
Objective: To compare lower incisor dentoalveolar compensation and mandible symphysis morphology among Class I and Class III malocclusion patients with different facial vertical skeletal patterns. Materials and Methods: Lower incisor extrusion and inclination, as well as buccal (LA) and lingual (LP) cortex depth, and mandibular symphysis height (LH) were measured in 107 lateral cephalometric x-rays of adult patients without prior orthodontic treatment. In addition, malocclusion type (Class I or III) and facial vertical skeletal pattern were considered. Through a principal component analysis (PCA) related variables were reduced. Simple regression equation and multivariate analyses of variance were also used. Results: Incisor mandibular plane angle (P < .001) and extrusion (P = .03) values showed significant differences between the sagittal malocclusion groups. Variations in the mandibular plane have a negative correlation with LA (Class I P = .03 and Class III P = .01) and a positive correlation with LH (Class I P = .01 and Class III P = .02) in both groups. Within the Class III group, there was a negative correlation between the mandibular plane and LP (P = .02). PCA showed that the tendency toward a long face causes the symphysis to elongate and narrow. In Class III, alveolar narrowing is also found in normal faces. Conclusions: Vertical facial pattern is a significant factor in mandibular symphysis alveolar morphology and lower incisor positioning, both for Class I and Class III patients. Short-faced Class III patients have a widened alveolar bone. However, for long-faced and normal-faced Class III, natural compensation elongates the symphysis and influences lower incisor position. |