Bite force measurements with hard and soft bite surfaces

Serra, C; Manns, Arturo

doi:10.1111/joor.12068

Cited by 66 publications

(42 citation statements)

References 18 publications

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“…This is consistent with studies on human subjects that test the effect of biting substrate hardness on voluntary bite force (Paphangkorakit and Osborn, 1998). This constraint on bite force probably arises via inhibitory feedback from mechanoreceptors that serve to limit risk of damage to the jaws and teeth during loading (Paphangkorakit and Osborn, 1998;Serra and Manns, 2013). Correspondingly, humans can bite more forcefully under local anesthesia (Orchardson and MacFarlane, 1980).…”

Section: Discussion Biting Substratesupporting

confidence: 72%

Reliable quantification of bite-force performance requires use of appropriate biting substrate and standardization of bite out-lever

Lappin

Jones

2014

Journal of Experimental Biology

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Bite-force performance is an ecologically important measure of whole-organism performance that shapes dietary breadth and feeding strategies and, in some taxa, determines reproductive success. It also is a metric that is crucial to testing and evaluating biomechanical models. We reviewed nearly 100 published studies of a range of taxa that incorporate direct in vivo measurements of bite force. Problematically, methods of data collection and processing vary considerably among studies. In particular, there is little consensus on the appropriate substrate to use on the biting surface of force transducers. In addition, the bite out-lever, defined as the distance from the fulcrum (i.e. jaw joint) to the position along the jawline at which the jaws engage the transducer, is rarely taken into account. We examined the effect of bite substrate and bite out-lever on biteforce estimates in a diverse sample of lizards. Results indicate that both variables have a significant impact on the accuracy of measurements. Maximum bite force is significantly greater using leather as the biting substrate compared with a metal substrate. Lessforceful bites on metal are likely due to inhibitory feedback from mechanoreceptors that prevent damage to the feeding apparatus. Standardization of bite out-lever affected which trial produced maximum performance for a given individual. Indeed, maximum bite force is usually underestimated without standardization because it is expected to be greatest at the minimum out-lever (i.e. back of the jaws), which in studies is rarely targeted with success. We assert that future studies should use a pliable substrate, such as leather, and use appropriate standardization for bite out-lever.

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Section: Discussion Biting Substratesupporting

confidence: 72%

Reliable quantification of bite-force performance requires use of appropriate biting substrate and standardization of bite out-lever

Lappin

Jones

2014

Journal of Experimental Biology

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“…Females experience changes in steroid hormone levels at menarche, pregnancy, childbirth, and the difference observed on the graph reasonably suggests the impact of menopause on cementum edification. Another explanation for the observed trend may be that there are sex differences in the age‐related relationship of mastication loads and cementum quality (Bakke et al, ; Braun et al, ; Owais et al, ; Palinkas et al, ; Sathyanarayana, Premkumar, & Manjula, ; Serra & Manns, ; Varga et al, ).…”

Section: Resultsmentioning

confidence: 99%

Age at death estimation by cementochronology: Too precise to be true or too precise to be accurate?

Bertrand

Cunha

Bécart

et al. 2019

American J Phys Anthropol

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Objectives: Cementochronology based on annual deposition of acellular cementum is acknowledged for its superior performance for estimating age-at-death but is also disregarded because of its suspicious effectiveness. This article aims to provide a standardized framework for the validation of the technique and to define and test cementochronology's performance and limitations. Materials and methods:To determine the boundaries of the cementum aging technique, we applied a certified protocol on a sample of 200 healthy canines from individuals of known age, sex, postmortem, and inhumation intervals from anthropological and anatomical collections. We scored readability and preservation of cementum and measured the agreement between estimates, i.e., the precision, and assessed the quality of the accordance between estimates and chronological age, i.e., the accuracy. To investigate the applicability on ancient material, 200 additional canines extracted from archeological assemblages were included. Accuracy and precision were analyzed for each age group in considering postmortem intervals and taphonomical conditions.Results: A strong correlation was found between chronological age and estimates (r = .927; p = .000) but results reveal an association between readability of incremental lines and chronological age (p < .05) and a notable difference in both precision and accuracy between individuals under and over 50 years. Results also demonstrate that taphonomy can be a serious obstacle increasing imprecision by a factor of three.Discussion: Improperly adopted, cementochronology can lead to precise but inaccurate estimations. If methodological, physiological, and taphonomical factors are taken into account, then, and only then, cementochronology will serve as a versatile and powerful tool for age-at-death estimation. K E Y W O R D Sage-at-death estimation, cementochronology, dental cementum, taphonomy

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“…The GM 10 ® occlusal force meter (Nagano Keiki Co. Ltd; 1‐30‐4 Higashimagome) has an 8.6 mm thick bite element that is placed in the masticatory center between the occluding first molars for assessing the MBF (Serra & Manns, ). The participant was asked to clench with maximum effort.…”

Section: Methodsmentioning

confidence: 99%

A prospective cohort study on survival and success of one‐piece mini‐implants with associated changes in oral function: Five‐year outcomes

Enkling

Haueter

Worni³

et al. 2019

Clinical Oral Implants Res

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Objective:To investigate in a prospective cohort study the 5-year post-loading survival and success of one-piece mini dental implants (MDIs) in edentulous subjects with mandibular implant overdentures (IODs) and to report the associated changes of oral function with respect to patient age. Materials and methods:Independently living edentulous patients were recruited and provided with new complete dentures. After an adaptation period, four one-piece MDIs (diameter 1.8 mm) were installed in the interforaminal region and immediately loaded. At baseline pre-operative (BL), as well as at 1-year and 5-year follow-up examinations, chewing efficiency was assessed with a validated color-mixing ability test and maximum voluntary bite force (MBF) was recorded with a digital force gauge. Implant survival and success were evaluated at 5-year follow-up. Non-parametric tests served to analyze the differences between time points.Results: Twenty patients participated in the study (5 men and 15 women; age at BL: n = 10 ≤ 65 years and n = 10 > 65 years). All patients were available for a 5-year follow-up (n = 2 in their long-term care facility; n = 1 only by telephone). The survival and success rates were both 100% after 61 ± 5.7 months. Chewing efficiency did not change over the first year (p = 0.167), but was improved at 5 year fup (n = 19) compared to baseline (p = 0.033) and to 1 year (p < 0.001). The MBF (n = 19 at 5-year follow-up) increased continuously over time (p < 0.001), but was less pronounced in the older cohort (p = 0.009). Conclusions:Mini dental implants seem to be a successful treatment option for edentulous elderly patients with very high survival and success rates, and serve to improve long-term oral function. K E Y W O R D Sclinical assessment, clinical research, clinical trials, diagnosis, occlusion, prosthodontics, stomatognathic physiology | 571 ENKLING Et aL.

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Bite force measurements with hard and soft bite surfaces

Cited by 66 publications

References 18 publications

Reliable quantification of bite-force performance requires use of appropriate biting substrate and standardization of bite out-lever

Reliable quantification of bite-force performance requires use of appropriate biting substrate and standardization of bite out-lever

Age at death estimation by cementochronology: Too precise to be true or too precise to be accurate?

A prospective cohort study on survival and success of one‐piece mini‐implants with associated changes in oral function: Five‐year outcomes

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