Caviedes-Bucheli, JavierMoreno, Jaime O.Ardila-Pinto, JacquelineDel Toro-Carreno, Hilda RosaSaltarín Quintero, HernandoSierra-Tapias, Claudia LilianaMacias-Gomez, FabioUlate, EstebanLombana-Sanchez, NelsonRoberto Munoz, Hugo2020-02-192020-02-192011-07http://hdl.handle.net/11634/21779Introduction: The purpose of this study was to quantify the effect of moderate and severe orthodontic forces on calcitonin gene-related peptide (CGRP) expression in healthy human dental pulp. Methods: Thirty human dental pulp samples were obtained from healthy premolars in which extraction was indicated for orthodontic reasons. Before extraction, teeth were divided into 3 groups of 10 premolars each: (1) the control group: healthy premolars without application of orthodontic forces; (2) the moderate force group: a 56-g force was applied to the premolars for 24 hours; and (3) the severe force group: a 224-g force was applied to the premolars for 24 hours. All dental pulp samples were processed, and CGRP was measured by radioimmunoassay. Results: Greater CGRP expression was found in the severe force group followed by the moderate force group. The lower CGRP values were for the control group. The Kruskal-Wallis test showed statistically significant differences between groups (P < .0001). Least significant difference (LSD) post hoc tests showed statistically significant differences in CGRP expression between the control group and the severe force group (P < .0001) but not with the moderate force group (P = .06). Differences between the moderate and severe force groups were statistically significant (P < .0001). Conclusions: CGRP expression in human dental pulp increases when teeth are submitted to severe orthodontic forces.application/pdfAtribución-NoComercial-CompartirIgual 2.5 Colombiahttp://creativecommons.org/licenses/by-nc-sa/2.5/co/Calcitonin gene-related peptideHuman dental pulpOrthodontic forceshttps://doi.org/10.1016/j.joen.2011.03.035Generación de Nuevo Conocimiento: Artículos publicados en revistas especializadas - Electrónicos