Maximal voluntary protrusion force of the human tongue has not been examined in positions beyond the incisors or at different lung volumes. Tongue force was recorded with the tongue tip at eight positions relative to the incisors (12 and 4mm protrusion, neutral and 4, 12, 16, 24 and 32mm retraction) at functional residual capacity (FRC), total lung capacity (TLC) and residual volume (RV) in 15 healthy subjects. Maximal force occurred between 12mm and 32mm retraction (median 16mm). Maximum force at FRC was reproducible at the optimal tongue position across sessions (P=0.68). Across all positions at FRC the average force was highest at 24mm retraction (28.3±5.3N, mean±95% CI) and lowest at 12mm protrusion (49.1±4.6% maximum; P<0.05). Across all tongue positions, maximal force was on average 9.3% lower at FRC than TLC and RV (range: 4.5-12.7% maximum, P<0.05). Retracted positions produce higher-force protrusions with a small effect of lung volume.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.resp.2014.11.017 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Excess cement and peri-implant disease: A cross-sectional clinical endoscopic study.
J Periodontol
January 2025
Department of Biomedical and Neuromotor Sciences, School of Dentistry - Division of Periodontology and Implantology, Alma Mater Studiorum - University of Bologna, Bologna, Italy.
Background: Crown cementation is a common technique for implant-supported prosthodontics. However, for possible slipping of the cement below the mucosal margin, its thorough removal poses some issues. The objective of this study was to evaluate the presence of submucosal cement residues in patients with peri-implant disease by endoscopic visualization and to investigate the potential correlation between the pathological scenario and the spatial position of cement residues.
View Article and Find Full Text PDFArticulatory correlates of consonantal length contrasts: The case of Japanese mimetic geminates.
JASA Express Lett
January 2025
Department of Linguistics, Yale University, New Haven, Connecticut 06520,
This study investigates the articulatory correlates of consonantal length contrasts in Japanese mimetic words using electromagnetic articulography data. Regression and dynamic time warping analyses applied to intragestural timing, kinematic properties, and intergestural timing reveal that Japanese geminates are characterized by longer closure phases, longer gestural plateaus, higher tongue tip positions, larger movements, and lower stiffness. Geminates also exhibit distinct timing relationships with adjacent vowels, specifically, longer times to target that allow for longer preceding vowels.
View Article and Find Full Text PDFReal-Time Subcutaneous Arterial Navigation for Thinning of an Anterolateral Thigh Flap Using Photoacoustic Imaging and Projection Mapping: A Case Report.
Microsurgery
January 2025
Department of Plastic and Reconstructive Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Thinning of anterolateral thigh flap is challenging. Anatomical studies have shown variations in arterial branching patterns in the subcutaneous layer, which were suspected to be the reason for the high frequency of thinning failures. We attempted to visualize subcutaneous arterial courses preoperatively and perform thinning of perforator flaps using this information appropriately.
View Article and Find Full Text PDFDetection of Lip, Tongue, Masseter, and Temporalis Muscle Contractions with Electromyography Tools as an Early Diagnostic Medium for Dentoalveolar Malocclusion.
Eur J Dent
December 2024
Department of Pediatric Dentistry, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia.
Objectives: This study aims to detect early class I, II, and III malocclusions through the muscle strength of the lips, tongue, masseter, and temporalis.
Materials And Methods: The study subjects were 30 pediatric patients with predetermined criteria. The subjects were divided into class I, II, and III malocclusions where each classification of malocclusion amounted to 10 people.
Positioning and preparation errors impacting dental panoramic radiographs in patients with mixed dentition.
Imaging Sci Dent
December 2024
Division of Oral and Maxillofacial Radiology, Faculty of Dentistry, University of British Columbia, Vancouver, Canada.
Purpose: This study aimed to evaluate the quality of clinically indicated digital dental panoramic radiographs (DPRs) of children with mixed dentition. Despite the likely widespread use of this modality, recent research detailing errors on DPRs is scarce.
Materials And Methods: A consecutive case series was performed, including 178 DPRs from patients aged 6 to 12 years.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!