Relationship between masseter muscle thickness and overbite values in a Nigerian population

  • Olabimpe Soyoye Abigail
  • Otuyemi Donald Olayinka
  • Kolawole Kikelomo Adebanke
  • Ayoola Oluwagbemiga Oluwole


Objective: This study determined the relationship between masseter muscle thickness and overbite values among Nige- rians. Methods: The subjects included 66 consecutive patients (21 males and 45 females) who presented for xed ortho- dontic appliance treatment. Overbite values were measured from standard lateral cephalometric radiographs taken for all patients,who were thereafter divided into three groups of re- duced overbite (n=22, mean -1.11+ 2.18mm), normal overbite (n=22, mean 2.59+0.50mm) and increased overbite (n=22, mean 5.21+1.39mm). The masseter muscle thickness of each patient was measured bilaterally using ultrasonography. Associations between masseter muscle thickness and different overbite values were analyzed using unpaired t-test, ANOVA and Tukey’s multiple comparison analysis. Results: Mean masseter muscle thickness was 11.23 ± 2.40 mm during relaxation and 12.81 ± 2.64 mm during contraction for study participants. The masseter muscle on the habitual side of mastication of parti- cipants was generally thicker but the difference was not statis- tically signi cant (P>0.05). There was a progressive increase in masseter muscle thickness from reduced overbite through normal overbite to increased overbite groups and the differen- ces were statistically signi cant (P<0.01). Tukey’s multiple com- parisons showed signi cant differences between all the three overbite groups (P<0.05). Conclusion: There was a direct rela- tionship between the muscle thickness and overbite variations.


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How to Cite
SOYOYE ABIGAIL, Olabimpe et al. Relationship between masseter muscle thickness and overbite values in a Nigerian population. Brazilian Journal of Oral Sciences, [S.l.], p. e17056, oct. 2017. ISSN 1677-3225. Available at: <>. Date accessed: 20 july 2019. doi:
Original Research