Malocclusion and TMJ disorders in teenagers from private and public schools in Mexico City

Leonor Sánchez-Pérez, María Esther Irigoyen-Camacho, Nelly Molina-Frechero, Patricia Mendoza-Roaf, Carlo Medina-Solís, Enrique Acosta-Gío, Gerardo Maupomé

Research output: Contribution to journalArticle

12 Scopus citations


Objective: To identify, among Mexican teenagers from public and private schools, the frequency, severity of malocclusion and orthodontic treatment needs, and their possible association with temporomandibular joint disorders. Material and Methods: Fifteen-year-old students were recruited from public and private schools. Clinical findings were registered as follows: oral hygiene status with the Oral Hygiene Index-Simplified, malocclusion using the Dental Aesthetic Index (DAI), and TMJ disorders following WHO criteria. Negative binomial and logistic regression models were constructed for data analysis. Results: A total of 249 fifteen-year old students were included in the study (118 female 47.4%). 68% had a DAI score ≤ 25 (minor or no occlusal anomalies), 18% scored 26-30 (mild anomalies), 7% scored 31-35 (evident anomalies), and 6% scored ≥ 36 (major malocclusion). The most frequent anomalies were dental crowding in 50%, maxillary dental irregularity in 44.6%, mandible irregularity in 41.2% and excessive maxillary overjet in 37.8%. Among the students, 26.1% had clicking/muscle or TMJ pain, of these 12.3% showed pain during palpation. OHI-S > 1 was found in 34% of the participants. The negative binomial model showed an association between DAI score and TMJ disorders (P=0.041). Also the logistic regression model showed an association between malocclusion (DAI>25) and TMJ disorders (OR=2.58, p=0.002). Malocclusion was associated also with poor oral hygiene (OR=1.65, p=0.007), and with attendance to public schools (OR=1.97, p=0.039). Conclusions: TMJ disorders and DAI scores were significantly associated. Screening/Diagnostic programs for ortho-dontic and TMJ-disorders are needed, to identify and offer treatment to teenagers with major malocclusion and TMJ/muscle pain.

Original languageEnglish (US)
Pages (from-to)e312-e318
JournalMedicina Oral, Patologia Oral y Cirugia Bucal
Issue number2
StatePublished - Mar 1 2013


  • Crowding
  • DAI
  • Dental aesthetic index
  • OHI-S
  • Occlusal anomalies
  • Temporo mandibular disorders (TMD)
  • Temporo mandibular joint disorders (TMJ disorders)

ASJC Scopus subject areas

  • Surgery
  • Otorhinolaryngology
  • Dentistry(all)

Fingerprint Dive into the research topics of 'Malocclusion and TMJ disorders in teenagers from private and public schools in Mexico City'. Together they form a unique fingerprint.

  • Cite this

    Sánchez-Pérez, L., Irigoyen-Camacho, M. E., Molina-Frechero, N., Mendoza-Roaf, P., Medina-Solís, C., Acosta-Gío, E., & Maupomé, G. (2013). Malocclusion and TMJ disorders in teenagers from private and public schools in Mexico City. Medicina Oral, Patologia Oral y Cirugia Bucal, 18(2), e312-e318.