Oxygen Saturation in the Dental Pulp of Maxillary Premolars in Different Age Groups - Part 1

Abstract

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.

Oxygen Saturation in the Dental Pulp of Maxillary and Mandibular Molars - Part 2

“…Gradual reductions in oxygen saturation in normal maxillary premolars have been verified with increasing age (22). The 40-44-year age group differed statistically from the 20-24, 25-29, and 30-34-year groups, but showed similar results to the 35-39-year group.…”

“…The 40-44-year age group differed statistically from the 20-24, 25-29, and 30-34-year groups, but showed similar results to the 35-39-year group. The was verified reduction significant in the 40-44-year age group, suggesting that older patients present lower oxygen saturation results even in the absence of pulp tissue injury (22). In anatomical analysis of the coronary chamber volume of molars, the age of patients, the sample size and the image model (radiographic or cone beam computed tomography) constitute factors that may explain the differences between the results of the studies.…”

“…The methodology used in this study was the same used previously (22). SaO 2 levels were determined using the BCI 3301 hand-held pediatric pulse oximetry monitoring system (Smiths Medical PM Inc., Waukesha, WI, USA), equipped with 3025 (for teeth) and 3026 (for fingers) sensors.…”

“…Various studies to determine the mean of oxygen saturation in healthy dental pulps have been developed in different clinical circumstances (3)(4)(5)(11)(12)(13)(17)(18)(19)(20)(21)(22)(23). Oxygen saturation for maxillary central incisors varies from 79.31% (19) to 94% (8); maxillary lateral incisors from 78.51% (23) to 87.47% (12); canine from 79.85% (19) to 91% (20); premolars 86.2% (22); and premolars and molars that were determined as an only group, the mean was 92.2% (21).…”

“…Oxygen saturation for maxillary central incisors varies from 79.31% (19) to 94% (8); maxillary lateral incisors from 78.51% (23) to 87.47% (12); canine from 79.85% (19) to 91% (20); premolars 86.2% (22); and premolars and molars that were determined as an only group, the mean was 92.2% (21).…”