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Ahlberg, J.P. et al.

Ahlberg, Kovero, Hurmerinta, Zepa, Nissinen, Könönen,

Maximal bite force and its association with signs and symptoms of TMD, occlusion, and body mass index in a cohort of young adults.

The purpose of this population-based cohort was to measure maximal bite force (MBF) in the molar and incisal regions and to examine whether MBF was associated with TMD, gender, occlusion (in terms of overjet, overbite, and total number of occluding contacts), and body mass index (BMI). MBF in the molar and incisal regions was measured using a calibrated method in 384 (196 males, 188 females) and 357 (181 males, 176 females) subjects, respectively. Two attempts in each region (right molar, left molar, and incisal) were made in random order. The subjects completed a multiple-choice questionnaire including subjective symptoms of TMD and were subsequently clinically examined. Helkimo's clinical dysfunction index and BMI were calculated. The mean MBF value in the molar region was significantly higher in males (878 N, SD 194) than in females (690 N, SD 175) (p < 0.001). The incisal forces were 283 N (SD 95) and 226 N (SD 86) (p < 0.001), respectively. According to multiple linear regression, TMJ discomfort was significantly negatively associated with MBF in the molar region (p < 0.05) and overjet was significantly negatively associated with maximal incisal bite force (p < 0.05). No significant associations between MBFs and body mass were found. The results demonstrate that in a population-based cohort of young adults signs, and symptoms of TMD and studied occlusal factors, unlike body mass, associate independently with MBF.[1]

References

Maximal bite force and its association with signs and symptoms of TMD, occlusion, and body mass index in a cohort of young adults. Ahlberg, J.P., Kovero, O.A., Hurmerinta, K.A., Zepa, I., Nissinen, M.J., Könönen, M.H. Cranio : the journal of craniomandibular practice. (2003) [Pubmed]

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