Background: The authors hypothesized that craniocervical extension occurs during normal mouth opening.
Methods: Twenty volunteers were studied. Interdental distance was measured at four different degrees of craniocervical extension.
Results: Interdental distance increased from 28 mm (95% confidence interval, 25-30) in slight flexion to 46 mm (95% confidence interval, 42-49) at full extension. Nearly maximal mouth opening was obtained with 26 degrees (95% confidence interval, 22-30) of craniocervical extension from neutral.
Conclusion: Craniocervical extension is an integral part of complete mouth opening in conscious subjects. Fixation of the craniocervical junction by disease, an internal or external fixation device, or technique may restrict mouth opening, with consequences for airway management.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1097/00000542-200310000-00009 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Comparative Evaluation of Temporomandibular Disorders and Dental Wear in Video Game Players.
J Clin Med
December 2024
Clinical Department 9, Faculty of Medicine, University of Medicine and Pharmacy "Carol Davila", 050474 Bucharest, Romania.
: The increasing prevalence of video gaming has raised concerns about its potential impact on musculoskeletal health, particularly temporomandibular disorders (TMDs). This study aims to compare TMD symptoms, mandibular function, and dental wear between gamers and non-gamers among university students. : An observational study included 108 students aged 20 to 23 years, divided into gamers (n = 48) and non-gamers (n = 60).
View Article and Find Full Text PDFAnatomical variations in Eurasian wolf (Canis lupus lupus) (Carnivora: Canidae) of the salivary glands: A histological and histochemical investigation.
PLoS One
January 2025
Department of Morphological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland.
The study involved a gross anatomical description of the parotid gland, mandibular gland, monostomatic sublingual gland, polystomatic sublingual gland, and zygomatic gland in 12 adult Eurasian wolves (Canis lupus lupus) (wild free-ranging individuals and their zoo counterparts), including their morphometry and microscopic evaluation using hematoxylin & eosin, mucicarmine, azan trichrome, PAS, AB pH 1.0, AB pH 2.5; AB pH 2.
View Article and Find Full Text PDFEffects of nanosecond‑ and microsecond‑pulse Er, Cr: YSGG laser on the morphology and pulp temperature of dentin in dental restoration debonding.
Lasers Med Sci
January 2025
Department of Stomatology, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China.
Objective: This study evaluated dentin morphology and pulp cavity temperature changes during nanosecond‑ and microsecond‑pulse Er, Cr: YSGG laser debonding restoration and residual adhesive.
Materials And Methods: Ten caries-free teeth had their enamel removed perpendicular to the long axis, followed by bonding of glass ceramic restorations. The samples were randomly divided into two groups and subjected to Er, Cr: YSGG laser (3 mJ, 100 Hz, 100 ns), (3 mJ, 100 Hz, 150 µs) for debonding of restoration and residual adhesive on dentin surfaces.
Home-based rehabilitation versus centre-based programs in patients with temporomandibular disorders-a systematic review and meta-analysis.
J Oral Facial Pain Headache
March 2024
College of Sports Medicine and Physical Therapy, Beijing Sport University, 100084 Beijing, China.
To compare the effects of home-based rehabilitation and occlusal splints or centre-based rehabilitation in patients with temporomandibular joint disorders (TMD). A systematic review and meta-analysis. PubMed, Embase, Cochrane Library, Web of Science and ClinicalTrials.
View Article and Find Full Text PDFOral Myiasis in a 6-year-old Child with Cerebral Palsy: A Case Report.
Int J Clin Pediatr Dent
November 2024
Department of Pedodontics and Preventive Dentistry, Government Dental College and Hospital, Hyderabad, Telangana, India.
Aims And Background: Myiasis is an infestation of live humans or animals with dipterous larvae that feed on the host's live or dead tissue. The incidence of oral myiasis is rare and even less common in children. Poor oral hygiene, neurological disabilities, bedridden or locomotor disabilities, low socioeconomic status, malnutrition, etc.
View Article and Find Full Text PDFWant 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!