SciELO - Scientific Electronic Library Online

vol.33 issue1Dental caries and social determinants of health in children of educational establishments of Canchaque and San Miguel de El Faique districts, Huancabamba province, Piura region, Perú, 2019Affectation of the first permanent molar and effect of an educational strategy in an educational institution in the city of Medellin: 2016-2019 author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google


Revista Facultad de Odontología Universidad de Antioquia

Print version ISSN 0121-246X


CASTANO-DUQUE, Sandra Patricia; HOYOS-DAZA, Alejandra; VARGAS-ROMERO, Angélica María  and  LUNA-ANGEL, Luis Eduardo. Strain generated in the TMJ with class II malocclusions, treated with extraction of premolars and orthodontics: analysis with the finite element method. Rev Fac Odontol Univ Antioq [online]. 2021, vol.33, n.1, pp.69-82.  Epub Aug 27, 2021. ISSN 0121-246X.


premolar extraction is an alternative for the treatment of class II malocclusion. A change in biomechanics can generate alterations in the Temporomandibular Joint (TMJ), which produces greater dental wear and the appearance of joint dysfunctions. The objective was to assess the effort concentration in the TMJ by means of finite element analysis in class II malocclusions treated with premolar extraction and orthodontics.


two 3D simulation models each with bone structures of the 2 jaws, complete dentition and disc in the TMJ. One corresponds to the patient without recurrence (WR) treated with extraction of first premolars and orthodontics, where class I dental stability is maintained. The other model with recurrence (R) treated with extraction of first premolars and orthodontics, increased overjet and overbite and canine class II; the load was applied to the mandibular ramus.


loads of 900N triplicated on all structures compared to 300N in both models. However, there were considerable differences between the left and right glenoid cavities in the WR model, at 300N of 19.9 MPa and 900N at 59.3 MPa. Most tensions of the disc occur in the lateral part.


due to the asymmetry in the TMJ structures, the stresses and stress concentration differ between the right and left sides in the two models.

Keywords : dental extraction; malocclusion; class II of Angle; temporo-mandibular joint; disc; premolar; finite element analysis.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )