The aim of this study was to determine oxygen saturation levels in the dental pulp of maxillary premolars in different age groups. A total of 120 human maxillary premolars with normal dental pulps were selected covering the following age groups: 20-24, 25-29, 30-34, 35-39 and 40-44 years (n=24 each group). Oxygen saturation was assessed using pulse oximetry. Analysis of variance was used to assess differences in oxygen saturation levels and Tukey's test was used to identify the age groups that differed from each other. Significance was set at 0.05. Mean oxygen saturation of 120 premolars was 86.20% considering all age groups. Significantly reduced levels were found in the oldest group compared to the other groups: 40 to 44 years - 80.00% vs. 89.71, 87.67, 88.71, and 84.80% for age groups 20-24, 25-29, 30-34, 35-39 years, respectively. The mean oxygen saturation levels were similar between 20 and 39 years of age (86.20%) in the whole sample, but reduced significantly in the 40-44-year age group, suggesting that older patients present lower oxygen saturation results even in the absence of pulp tissue injury.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1590/0103-6440201701660 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Association Between Nocturnal Hypoxemia Parameters and Coronary Microvascular Dysfunction: A Cross-Sectional Study.
Nat Sci Sleep
December 2024
Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, People's Republic of China.
Objective: There is a connection between obstructive sleep apnea (OSA) and coronary microvascular dysfunction (CMD), but the underlying mechanisms remain unclear. This study aims to evaluate the correlation between OSA-related nocturnal hypoxemia parameters and CMD.
Methods: This is an observational, single-center study that included patients who underwent polysomnography and coronary angiography during hospitalization.
Context-aware analysis enhances autoscoring accuracy of home sleep apnea testing.
J Clin Sleep Med
January 2025
Natural Interaction Lab, Thom Building, Department of Engineering, University of Oxford, Oxford, United Kingdom.
Study Objectives: Home sleep apnea testing based on peripheral arterial tonometry (P-HSAT) is increasingly being deployed because of its ability to test for multiple nights. However, P-HSATs do not have access to modalities such as airflow and cortical arousals and instead rely on alternative sources of information to detect respiratory events. This results in an a-priori performance disadvantage.
View Article and Find Full Text PDFRight ventricular myocardial work: proof-of-concept for the assessment of pressure-strain loops of patients with pre-capillary pulmonary hypertension.
Cardiovasc Ultrasound
January 2025
Cardiology Department, Hospital de Santa Marta, Unidade Local de Saúde São José, Centro Clínico Académico de Lisboa, Rua de Santa Marta N.º 50, Lisbon, 1169-024, Portugal.
Background: Right ventricular myocardial work (RVMW) assessed by transthoracic echocardiography allows to study the right ventricular (RV) function using RV pressure-strain loops. The assessment of these novel indexes of RVMW has not yet been exten sively studied, namely in pre-capillary pulmonary hypertension (PH) population.
Objectives: to evaluate the relationship between RVMW and invasive indices of right heart catheterization (RHC) in a cohort of patients with group I and group IV PH and to compare with a control group without PH.
Cerebral oxygen saturation in cirrhotic patients with gastro-intestinal bleeding, a near infrared spectroscopy study.
Metab Brain Dis
January 2025
Brain Liver Pitié-Salpêtrière (BLIPS) Study Group, Centre de recherche Saint- Antoine, Maladies métaboliques, biliaires et fibro-inflammatoire du foie, Institute of Cardiometabolism and Nutrition (ICAN), INSERM UMR_S 938, Paris, France.
Near Infrared Spectroscopy (NIRS) is a non-invasive optical technique allowing a continuous measurement of brain's hemoglobin (Hb) saturation in oxygen (rSO2). It is a marker of cerebral insult and rSO2 < 50% is associated with increased neurological impairment. Cirrhotic patients with gastrointestinal bleeding (GIB) often develop hepatic encephalopathy (HE).
View Article and Find Full Text PDFIncremental shuttle walking test for calf muscle oxygenation assessment in peripheral arterial disease: a cross-sectional study.
Sci Rep
January 2025
Graduate Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos, 6627 - Pampulha, Belo Horizonte, CEP 31270-901, MG, Brazil.
People with peripheral arterial disease (PAD) and intermittent claudication (IC) experience impaired walking due to an imbalance between muscle oxygen supply and demand during exercise. Studies with near-infrared spectroscopy (NIRS) during treadmill tests reveal notable tissue deoxygenation with slow recovery. This cross-sectional study aimed to compare behavior of calf muscle oxygenation during the incremental shuttle walking test (ISWT) with a continuous treadmill test (3.
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!