Digitalized measurement of maximum bite force in Iraqi adult sample aged 18 – 25 years with different malocclusion groups


Background: Information concerning the maximum bite force in human population is important to clinicalorthodontics. Additionally, the influence of bite force on the vertical stability of any treatment result is important. Thenew position of the dentition should be compatible with the dynamics of the muscular and occlusal forces in allplanes. This study was conducted to assess the maximum bite force in the molar (left and right) and incisor region ofIraqi adult persons aged 18-25 years.Materials and method: The total sample size is (150) persons (75 male, 75 female) of untreated Iraqi subjects dividedaccording to the class of malocclusion. The maximum bite force measurements were performed by a digital device(GM10) placed in the first molar area unilaterally on both the left and right sides which was used especially for thisstudy. After that measured the maximum bite in the right central incisor region.Results: The maximum molar force was higher in class III followed by class II and then class I. The maximum incisalforce was higher in class I followed by class II then class III.Conclusions: there was a very high significant difference between molar and incisal bite force. There was nonsignificant difference between right and left side in all classes of malocclusion. Generally there was a very highsignificant difference regarding the genders, males have a greater bite force than females for class I, II, IIImalocclusion.