Objective: To compare maximum incisor (MBFinc) and molar (MBFmol) bite forces regarding the type of dentition and sex and to establish a relationship between them.Methods: One hundred-five individuals were divided into 3 groups: G1 - 22 females/13 males (4-5 years); G2 - 15 females/20 males (11-12 years); and G3 - 16 females/19 males (17- 18 years). The maximum bite force was recorded with an extraoral measuring device. Three measurements were recorded: right and left molar level (MBFmol) and incisor level (MBFinc). The ratio %MBFinc/MBFmol was determined.Results: MBFmol and MBFinc values increased with age (p < 0.05). MBFmol showed statistically higher values than MBFinc (p < 0.05), when compared within the same group.Conclusion: MBFinc and MBFmol increased with age. For all groups, MBFmol showed higher values than MBFinc, and %MBFinc/MBFmol ratio was 1:2. No differences were found in maximum bite force between sexes.
Keywords: Bite force; evolution of the dentition; masticatory muscles; maximum incisive bite force; maximum molar bite force.