keyword
MENU ▼
Read by QxMD icon Read
search

Bite force

keyword
https://www.readbyqxmd.com/read/29161774/building-trophic-specializations-that-result-in-substantial-niche-partitioning-within-a-young-adaptive-radiation
#1
Luz Patricia Hernandez, Dominique Adriaens, Christopher H Martin, Peter C Wainwright, Bert Masschaele, Manuel Dierick
Dietary partitioning often accompanies the increased morphological diversity seen during adaptive radiations within aquatic systems. While such niche partitioning would be expected in older radiations, it is unclear how significant morphological divergence occurs within a shorter time period. Here we show how differential growth in key elements of the feeding mechanism can bring about pronounced functional differences among closely related species. An incredibly young adaptive radiation of three Cyprinodon species residing within hypersaline lakes in San Salvador Island, Bahamas, has recently been described...
November 21, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29159806/the-evolution-of-bite-force-in-horned-lizards-the-influence-of-dietary-specialization
#2
Jay J Meyers, Kiisa C Nishikawa, Anthony Herrel
Dietary specialization is an important driver of the morphology and performance of the feeding system in many organisms, yet the evolution of phenotypic specialization has only rarely been examined within a species complex. Horned lizards are considered primarily myrmecophagous (ant eating), but variation in diet among the 17 species of horned lizards (Phrynosoma) makes them an ideal group to examine the relationship between dietary specialization and the resultant morphological and functional changes of the feeding system...
November 21, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29148085/built-to-bite-differences-in-cranial-morphology-and-bite-performance-between-narrow-and-broad-headed-european-glass-eels
#3
Jens De Meyer, Sam Van Wassenbergh, Mathias Bouilliart, Jelle Dhaene, Dominique Adriaens
The presence of two phenotypes in a single species is a widespread phenomenon, also observed in European eel (Anguilla anguilla). This dimorphism has been related to dietary differences in the subadult elver and yellow eel stages, with broad-heads generally feeding on harder and/or larger-bodied prey items than narrow-heads. Nevertheless, both broad- and narrow-headed phenotypes can already be found among glass eels, the stage preceding the elver eel stage. As these glass eels are considered nonfeeding, we investigate here to what degree the observed variation in head width is reflected in variation in the musculoskeletal feeding system, as well as whether this reflects the same variation observed in the older, dimorphic yellow eels...
November 17, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29148084/size-shape-and-sex-dependent-variation-in-force-production-by-crayfish-chelae
#4
Brian M Malavé, Joseph M Styga, Ethan D Clotfelter
The ability to generate large closing forces is important for many animals. Several studies have demonstrated that bite or pinching force capacity is usually related to the linear dimensions of the closing apparatus. However, relatively few studies have applied geometric morphometrics to examine the effects of size-independent shape on force production, particularly in studies of crustacean pinching force. In this study, we utilized traditional and geometric morphometric techniques to compare the pinching force of Procambarus clarkii crayfish to their chela morphology...
November 17, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29116495/mandibular-kinematics-and-maximum-voluntary-bite-force-following-segmental-resection-of-the-mandible-without-or-with-reconstruction
#5
Sabine S Linsen, Annina Oikonomou, Markus Martini, Marcus Teschke
OBJECTIVES: The purpose was to analyze mandibular kinematics and maximum voluntary bite force in patients following segmental resection of the mandible without and with reconstruction (autologous bone, alloplastic total temporomandibular joint replacement (TMJ TJR)). MATERIALS AND METHODS: Subjects operated from April 2002 to August 2014 were enrolled in the study. Condylar (CRoM) and incisal (InRoM) range of motion and deflection during opening, condylar retrusion, incisal lateral excursion, mandibular rotation angle during opening, and maximum voluntary bite force were determined on the non-affected site and compared between groups...
November 7, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29090535/bite-force-measurement-based-on-fiber-bragg-grating-sensor
#6
Srivani Padma, Sharath Umesh, Sundarrajan Asokan, Talabattula Srinivas
The maximum level of voluntary bite force, which results from the combined action of muscle of mastication, joints, and teeth, i.e., craniomandibular structure, is considered as one of the major indicators for the functional state of the masticatory system. Measurement of voluntary bite force provides useful data for the jaw muscle function and activity along with assessment of prosthetics. This study proposes an in vivo methodology for the dynamic measurement of bite force employing a fiber Bragg grating (FBG) sensor known as bite force measurement device (BFMD)...
October 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29084301/masticatory-performance-and-maximum-bite-and-lip-force-depend-on-the-type-of-prosthesis
#7
Martin Schimmel, Kujtim Memedi, Tatiana Parga, Joannis Katsoulis, Frauke Müller
PURPOSE: The aim of this cross-sectional study was to assess maximum restraining lip force (MLF), maximum voluntary bite force (MBF), and patient-related parameters to evaluate their influence on masticatory function in four groups of participants with different dental states. METHODS: Participants were recruited and assigned to one of four different groups depending on dental status: complete removable dental prostheses (CRDP group); edentulous with two-implant overdentures (IOD group); Kennedy Class I partial removable dental prostheses (PRDP group); or fully dentate (control group)...
November 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29074703/durophagous-biting-in-sea-otters-enhydra-lutris-differs-kinematically-from-raptorial-biting-of-other-marine-mammals
#8
Lori L Timm-Davis, Randall W Davis, Christopher D Marshall
Sea otters represent an interesting model for studies of mammalian feeding evolution. Although they are marine mammals, sea otters returned to the sea relatively recently and feed at the surface. Therefore, they represent a transitional stage of aquatic adaptation. Currently no feeding performance studies of sea otters have been conducted. The main objective of this study was to characterize the feeding kinematic profile in sea otters. It was hypothesized that sea otters would exhibit a terrestrial feeding behavior and that they forcefully crush hard prey at large gapes...
October 26, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29055645/bite-force-and-electromyography-evaluation-after-cranioplasty-in-patients-with-craniosynostosis
#9
Markus Martini, Valentin Wiedemeyer, Nils Heim, Martina Messing-Jünger, Sabine Linsen
OBJECTIVE: This long-term follow-up investigation aimed to assess masticatory muscle function in 15 patients with craniosynostosis with detachment of the temporal muscle during fronto-orbital advancement 6 years after cranioplasty compared with a non-operative stomatognathic healthy cohort in the same age group (n = 25). STUDY DESIGN: The follow-up assessment for the operated children occurred on average 5.2 ± 1.7 years after surgery at the age of 7 ± 1...
September 21, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29053659/impact-of-temporomandibular-disorders-on-the-stomatognathic-system-in-children
#10
K-V Díaz-Serrano, T-M Dias, P Vasconcelos, L-G Sousa, S Siéssere, S Regalo, M Palinkas
BACKGROUND: To evaluate the EMG activity and thickness of right masseter (RM), left masseter (LM), right temporal (RT) and left temporal (LT) muscles and bite force in children with temporomandibular disorders (TMD). MATERIAL AND METHODS: Forty five children (mean age 8.8 years; 22 boys and 23 girls) were examined on the basis of the RDC/TMD and the Faces Pain Scale-Revised (FPS-R) was used to determine the level of severity of the signs and symptoms of TMD, resulting in four groups: GI - without TMD (n=10); GII - with mild TMD (n=18), GIII: with moderate TMD (n=12) and GIV: with severe TMD (n=5)...
November 1, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/29042742/class-ii-young-adult-treatment-with-twin-force-bite-corrector-10-year-follow-up
#11
Ozge Uslu-Akcam, Ayse Tuba Altug, Ufuk Toygar Memikoglu
One of the most preferred compliance free fixed functional appliances in nongrowing patients is Twin Force Bite corrector (TFBC). The aim of this case report is to evaluate the effectiveness of TFBC in the treatment of an adult Class II case. A 16-year 1-month-old boy having skeletal and dental Class II relationship was selected. Roth 0.018 × 0.025 inch slots brackets were attached; a fixed lingual arch in the mandibular dental arch and a Nance appliance in the maxillary dental arch were used to increase anchorage...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29040921/effect-of-local-cooling-on-excitation-contraction-coupling-in-myasthenic-muscle-another-mechanism-of-ice-pack-test-in-myasthenia-gravis
#12
Daisuke Yamamoto, Tomihiro Imai, Emiko Tsuda, Takayoshi Hozuki, Rika Yamauchi, Shin Hisahara, Jun Kawamata, Shun Shimohama
OBJECTIVE: The ice-pack test is a convenient diagnostic testing procedure for myasthenia gravis (MG). We investigated the underlying mechanism of the ice-pack test performed on bilateral masseters. METHODS: We performed trigeminal repetitive nerve stimulation (RNS), excitation-contraction (E-C) coupling assessment (Imai's method) and bite force measurement before and after cooling of the masseters in MG patients and normal controls. After placing the ice-pack on the masseters for 3min, serial recordings of the three tests were performed at various time intervals during 10min after cooling...
September 22, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29040460/effect-of-different-masticatory-functional-demands-on-the-3d-mandibular-condyle-morphology-of-growing-rats-using-posterior-bite-blocks
#13
Balazs J Denes, Benjamin Lazzarotto, Andrea Bresin, Stavros Kiliaridis
Background and objectives: Apart from the primary effect of bite-blocks on tooth position, they may also influence the mandibular condylar growth. Our aim was to investigate their influence on the condylar morphology, with variable masticatory forces. Material and methods: Fifty-two 4-week old male rats were divided into hard and soft diet groups in order to create individuals with different masticatory muscle capacity. Two weeks later, they were equally divided into bite-block and control groups...
October 11, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/29037463/in-vivo-bone-strain-and-finite-element-modeling-of-a-rhesus-macaque-mandible-during-mastication
#14
Olga Panagiotopoulou, José Iriarte-Diaz, Simon Wilshin, Paul C Dechow, Andrea B Taylor, Hyab Mehari Abraha, Sharifah F Aljunid, Callum F Ross
Finite element analysis (FEA) is a commonly used tool in musculoskeletal biomechanics and vertebrate paleontology. The accuracy and precision of finite element models (FEMs) are reliant on accurate data on bone geometry, muscle forces, boundary conditions and tissue material properties. Simplified modeling assumptions, due to lack of in vivo experimental data on material properties and muscle activation patterns, may introduce analytical errors in analyses where quantitative accuracy is critical for obtaining rigorous results...
September 1, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29036170/quantifying-the-effects-of-temperature-on-mosquito-and-parasite-traits-that-determine-the-transmission-potential-of-human-malaria
#15
Lillian L M Shapiro, Shelley A Whitehead, Matthew B Thomas
Malaria transmission is known to be strongly impacted by temperature. The current understanding of how temperature affects mosquito and parasite life history traits derives from a limited number of empirical studies. These studies, some dating back to the early part of last century, are often poorly controlled, have limited replication, explore a narrow range of temperatures, and use a mixture of parasite and mosquito species. Here, we use a single pairing of the Asian mosquito vector, An. stephensi and the human malaria parasite, P...
October 2017: PLoS Biology
https://www.readbyqxmd.com/read/29023221/evaluation-of-the-effect-of-phototherapy-in-patients-with-mandibular-fracture-on-mandibular-dynamics-pain-edema-and-bite-force-a-pilot-study
#16
Leandro Lauriti, João Gualberto de Cerqueira Luz, Raquel Agnelli Mesquita-Ferrari, Kristianne Porta Santos Fernandes, Alessandro Melo Deana, Anna Carolina Ratto Tempestini Horliana, Larissa Costa-Santos, Aldo Brugnera Junior, Sandra Kalil Bussadori
OBJECTIVE: The aim of this study was to evaluate the effect of phototherapy on bite force, facial swelling, mandibular movements, and pain in patients having undergone surgical treatment for mandibular fractures. BACKGROUND: These are among the predominant types of facial fractures, and treatment involving surgical fixation with titanium plates is one of the most common procedures in oral-maxillofacial surgery. Phototherapy has been used to accelerate the muscle healing process and significantly improves muscle regeneration by inducing the formation of new muscle fibers...
October 12, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29017762/occlusal-loading-during-biting-from-an-experimental-and-simulation-point-of-view
#17
REVIEW
Oliver Röhrle, Harnoor Saini, David C Ackland
OBJECTIVES: Occlusal loading during clenching and biting is achieved by the action of the masticatory system, and forms the basis for the evaluation of the functional performance of prosthodontic and maxillofacial components. This review provides an overview of (i) current bite force measurement techniques and their limitations and (ii) the use of computational modelling to predict bite force. A brief simulation study highlighting the challenges of current computational dental models is also presented...
October 7, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29016842/comparison-of-emg-activity-and-blood-flow-during-graded-exertion-in-the-orbicularis-oris-muscle-of-adult-subjects-with-and-without-lip-incompetence-a-cross-sectional-survey
#18
Jun-Ichi Takada, Jun J Miyamoto, Chiemi Sato, Ayano Dei, Keiji Moriyama
Background/Objectives: The peri-oral muscles-including orbicularis oris-are critical in maintaining equilibrium in tooth position. Lip incompetence (LI) can thus be a factor in malocclusion. We therefore aimed to validate a technique to evaluate not only muscle activity via electromyography (EMG) but also muscle endurance and fatigue via blood flow (BF) for LI. Subjects/Methods: Subjects were classified into increased muscle tension/lip incompetent (experimental) and normal muscle tension/lip competent (control) groups...
August 21, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28968484/orthodontic-treatment-for-deep-bite-and-retroclined-upper-front-teeth-in-children
#19
REVIEW
Declan T Millett, Susan J Cunningham, Kevin D O'Brien, Philip E Benson, Cesar M de Oliveira
BACKGROUND: A Class II division 2 malocclusion is characterised by upper front teeth that are retroclined (tilted toward the roof of the mouth) and an increased overbite (deep overbite), which can cause oral problems and may affect appearance.This problem can be corrected by the use of special dental braces (functional appliances) that move the upper front teeth forward and change the growth of the upper or lower jaws, or both. Most types of functional appliances braces are removeable and this treatment approach does not usually require extraction of any permanent teeth...
October 2, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28965370/a-5-year-longitudinal-study-of-association-of-maximum-bite-force-with-development-of-frailty-in-community-dwelling-older-adults
#20
Masanori Iwasaki, Yoshihara Akihiro, Naoko Sato, Misuzu Sato, Kumiko Minagawa, Mieko Shimada, Mamoru Nishimuta, Toshihiro Ansai, Yutaka Yoshitake, Takahiro Ono, Hideo Miyazaki
OBJECTIVES: To determine whether maximum bite force (MBF), an objective measure of oral function, is associated with development of frailty in community-dwelling older adults. METHODS: This prospective cohort study included community-dwelling Japanese adults aged 75 years at baseline (n = 322). Baseline MBF was measured using an electronic recording device (Occlusal Force-Meter GM10). Follow-up examinations, including physical fitness and anthropometric evaluation and structured questionnaires, were administered annually over a 5-year period to determine the incidence of frailty, which was defined by the presence of three or more of the following five components derived from the Cardiovascular Health Study: low level of mobility, low physical activity level, weakness, shrinking, and poor endurance and energy...
October 1, 2017: Journal of Oral Rehabilitation
keyword
keyword
49633
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"