The relationship between jaw injury, third molar removal, and orthodontic treatment and TMD symptoms in university students in Japan

Rahena Akhter, Nur Mohammad Monsur Hassan, Ruka Ohkubo, Tetsurou Tsukazaki, Jun Aida, Manabu Morita

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Aims: To determine the association between temporomandibular disorders (TMD) and experiences of jaw injury, third molar removal, and orthodontic treatment, controlling for confounding factors such as age, sex, emotional stress, and oral parafunction. Methods: First-year university students (n = 2,374) were instructed to answer a questionnaire regarding symptoms of TMD, jaw injury, third molar removal, orthodontic treatment, stress, and parafunctional habits. All subjects were classified according to the level of TMD symptoms. Logistic regression was applied to assess the associations of experiences of jaw injury, third molar removal, and orthodontic treatment with presence of TMD symptoms after controlling for age, sex, stress, and parafunctional habits. Results: Of the 2,374 students, 715 students were TMD symptom-positive. They were classified into 7 groups consisting of those with only clicking (group 1), only pain in the temporomandibular joint (group 2), only difficulty in mouth opening (group 3), clicking and pain (group 4), clicking and difficulty in mouth opening (group 5), difficulty in mouth opening and pain (group 6), and all 3 symptoms (group 7). TMD symptoms were significantly associated with jaw injury. Odds ratios were 2.25, 2.47, 3.38, and 2.01 for groups 2, 3, 6, and 7, respectively. Experience of third molar removal was significantly associated with TMD (odds ratio = 1.81 for group 1). No association was found between orthodontic experience and TMD. Conclusion: Experiences of jaw injury and third molar removal might be cumulative and precipitating events in TMD.

Original languageEnglish
Pages (from-to)50-56
Number of pages7
JournalJournal of Orofacial Pain
Volume22
Issue number1
Publication statusPublished - Dec 2008
Externally publishedYes

Fingerprint

Temporomandibular Joint Disorders
Third Molar
Orthodontics
Jaw
Japan
Students
Wounds and Injuries
Mouth
Therapeutics
Pain
Habits
Odds Ratio
Temporomandibular Joint
Psychological Stress
Logistic Models

Keywords

  • Jaw injury
  • Orthodontic treatment
  • Third molar removal
  • University students

ASJC Scopus subject areas

  • Dentistry(all)
  • Clinical Neurology

Cite this

The relationship between jaw injury, third molar removal, and orthodontic treatment and TMD symptoms in university students in Japan. / Akhter, Rahena; Hassan, Nur Mohammad Monsur; Ohkubo, Ruka; Tsukazaki, Tetsurou; Aida, Jun; Morita, Manabu.

In: Journal of Orofacial Pain, Vol. 22, No. 1, 12.2008, p. 50-56.

Research output: Contribution to journalArticle

Akhter, Rahena ; Hassan, Nur Mohammad Monsur ; Ohkubo, Ruka ; Tsukazaki, Tetsurou ; Aida, Jun ; Morita, Manabu. / The relationship between jaw injury, third molar removal, and orthodontic treatment and TMD symptoms in university students in Japan. In: Journal of Orofacial Pain. 2008 ; Vol. 22, No. 1. pp. 50-56.
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