Relationship between abnormal horizontal or vertical dental overlap and temporomandibular disorders

  • Fernando Luiz Goulart Cruz Faculdade de Odontologia da Universidade Federal de Juiz de Fora
  • Caroline Cotes Marinho Faculdade de Odontologia da Universidade Federal de Juiz de Fora
  • Fabíola Pessôa Pereira Leite Faculdade de Odontologia da Universidade Federal de Juiz de Fora
Keywords: disfunção, oclusão, sistema estomatognático, trespasse horizontal, trespasse vertical,

Abstract

Purpose: This study investigated if abnormal vertical (overbite) and/or horizontal (overjet) dental overlap are more prevalent in adult subjects with clinical signs of temporomandibular disorders (TMD). Methods: Case-control design. The sample comprised 103 subjects, males and females from 19 to 54 year-old, which were divided into two groups: Group 1 (control) without TMD (n=52) and Group 2 (cases) with TMD (n=51). Inclusion criteria for Group 2 were based on axis I of the RDC/TMD protocol. Two calibrated examiners (Cohen kappa = 0.85) performed the clinical examination to collect data on occlusion and TMD. Data were analyzed by Chi-square tests. Results: Overbite mean values were 3.4 mm (control group) and 2.5 mm (cases group). Abnormal overbite was found in 26 subjects (50%) of the control group and 16 (31%) in the cases group (P=0.054). Overjet mean values were 2.4 mm and 2.0 mm for the control and cases groups, respectively. Abnormal overjet was found in 44 (85%) subjects of the control group and 44 (86%) of the cases group (P=0.811). No significant overall association was found between the tested occlusal variables and TMD (P=0.585). Conclusion: Overbite and overjet were not associated with TMD in this sample.

Author Biographies

Fernando Luiz Goulart Cruz, Faculdade de Odontologia da Universidade Federal de Juiz de Fora
Monitor efetivo da disciplina de oclusão e acadêmico do nono período da Faculdade de Odontologia
Caroline Cotes Marinho, Faculdade de Odontologia da Universidade Federal de Juiz de Fora
Membro do Serviço Especializado ATM da FOUFJF e acadêmica do nono período da Faculdade de Odontologia
Fabíola Pessôa Pereira Leite, Faculdade de Odontologia da Universidade Federal de Juiz de Fora
Mestre e Doutora em Prótese Parcial Fixa pela Universidade Estadual Paulista Júlio de Mesquita Filho, São José dos Campos - SP; Professor adjunto 2 da Universidade Federal de Juiz de Fora - MG
Published
2009-05-28
Section
Original Article