Bite force and state of dentition

Abstract

The maximal bite force and the strength of the finger-thumb grip of 125 Skolt Lapps, aged 15 to 65, was measured with a specially devised apparatus. The bite force was measured with the biting fork placed between the first molars and between the incisors, respectively. The finger-thumb grip was measured by letting the subject press the prongs of the fork between the thumb and forefinger of each hand as hard as possible. The range of inter-individual variation of the maximal bite force and finger-thumb grip was great. The mean values were higher for the males than for the females. In the males the maximal bite force thus measured in the molar region was 39 kg (382 N) and 18 kg (176 N) in the incisor region. The corresponding values for the females were 22 kg (216 N) and 11 kg (108 N). The finger-thumb grip strength for males was, on the average, 10 kg (98 N); that of the females, 7 KG (69 N). The average difference in bite force between the men and the women was larger in the group with natural teeth than in the one with complete dentures. The values found for the bite force decreased with increasing age, especially for the females. Most of this reduction with increasing age was probably due to the age-dependent deterioration of the dentition. In both sexes the bite force was notably smaller among the denture wearers than among the dentate persons. The number of natural teeth varied closely with the bite force, i.e. the greater number of natural teeth the greater the bite force.

Impact of thermal properties of veneering ceramics on the fracture load of layered Ce-TZP/A nanocomposite frameworks

“…The results for the fracture load obtained with all the systems except Reflex exceeded the maximum bite forces, which are reported to reach up to 400N in the molar region [16]. Except for Reflex, IPS e.max and Allux the threshold of 400N was exceeded at least twofold.…”

Effect of different dental articulating papers on SEMG activity during maximum clenching

“…Several historical and more recent studies, where occlusal parameters were analyzed, suggested that the activity of the masticatory muscles at maximum efforts depends on occlusal factors such as the numbers of posterior occlusal contacts (Helkimo et al , 1977;Bakke, 1993;Kerstein, 2004). A higher number of posterior contacts gives a stable intercuspal support that allows elevator muscles to achieve higher levels of muscular activity during clenching and chewing (Bakke, 1993;Kerstein, 2004).…”

Effect of different surface pretreatments and adhesives on the load-bearing capacity of veneered 3-unit PEEK FDPs

“…21 FDPs created with computer-aided design/computer-aided manufacturing (CAD/CAM) showed lower deformation and higher fracture load than pressed ones. 22 A study examining nonveneered 3-unit PEEK frameworks with a rather small connector diameter of 7.4 mm 2 showed a deformation of the FDPs at 1200 N and fracture in the connector of the FDPs at 1385 N. 3 If 400 N is considered the average maximum mastication 4 force in the load-bearing posterior area, 23 the laboratory results are increased by at least a factor of 2.3, 24 Therefore, PEEK was suggested as a material for FDPs.…”