Performance evaluation of salivary amylase activity monitor

Yamaguchi, Masaki; Kanemori, Takahiro; Kanemaru, Masashi; Takai, Noriyasu; Mizuno, Youichi; Yoshida, Hiroshi

doi:10.1016/j.bios.2004.02.012

Cited by 210 publications

(174 citation statements)

References 13 publications

Supporting

Mentioning

169

Contrasting

Unclassified

Order By: Relevance

“…Salivary alpha-amylase activity is a reflection of physical and emotional stress 18) . There is little variation caused by aging, but daily fluctuations occur in salivary alpha-amylase activity 35,36) .…”

Section: Discussionmentioning

confidence: 99%

Intraoral electric potential <i>via</i> oral bacterial power generation —A novel mechanism of biofilm formation

et al. 2017

View full text Add to dashboard Cite

In the early stages of biofilm accumulation, the electric charge of the dental enamel and pellicle surfaces is known to be involved. We therefore investigated the relationship between oral hygiene and intraoral electric potential (IoP) in 45 male participants using a double-blind study. IoP, but not body surface electric potential, was loosely correlated with oral hygiene condition (Oral Hygiene Index; OHI). IoP was also loosely correlated with smartphone use; however, there was no significant correlation between smartphone use and OHI. IoP elevation might be caused by OHI elevation resulting from biofilm formation as an internal factor, with smartphone use as an external factor. This in vitro study revealed the generating capacity of Streptococcus mutans accompanied by biofilm accumulation using a microbial fuel cell. These results suggest that IoP elevation is caused by biofilm accumulation induced by power generation of oral bacteria, resulting in elevation of OHI.

show abstract

Section: Discussionmentioning

confidence: 99%

Intraoral electric potential <i>via</i> oral bacterial power generation —A novel mechanism of biofilm formation

et al. 2017

View full text Add to dashboard Cite

show abstract

“…We used a handheld monitor (Nipro Co., Japan) and reagent paper to measure the enzymatic SAA activity. This measurement method can be performed easily and quickly, and it has been evaluated and used previously [4].…”

Section: Methodsmentioning

confidence: 99%

“…Such devices use a precursor colorimetric assay platform in which the color intensity of the enzymatic reaction product is measured photo metrically to determine the SAA concentration [4]. The total time needed to analyze saliva is 1 min, including 30 s to collect saliva, 10 s to transcript saliva and 20 s for the reaction time [5].…”

Section: Introductionmentioning

confidence: 99%

Salivary Alpha Amylase Levels During Primary Tooth Extraction in Children Aged 6–11 Years

et al. 2018

View full text Add to dashboard Cite

Methods: Thirty-seven participants aged 6-11 years who were to undergo the extraction of primary teeth at the Dental and Oral Educational Hospital, Faculty of Dentistry Universitas Indonesia, were enrolled. The subjects were divided into two groups: One group consists of 20 children who had never undergone a tooth extraction, and the other group consists of 17 children who had undergone tooth extraction. From all children, one saliva sample was collected using a portable saliva strip 10 min before (t0), shortly after (t1), and 10 min after (t2) local anesthetic injection, and the SAA activity was determined using a portable Nipro Cocoro Meter device. The SAA levels of both groups were analyzed using the Mann-Whitney U test.Results: There were significant differences in SAA levels at t0 (p=0.001), t1 (p=0.018), and t2 (p=0.021) in both groups. Anxiety is a combination of behavioral and physiological reactions. SAA release is regulated by autonomic innervation, and the SAA level increases owing to acute stress. Conclusion:Dentists should note patients' negative dental experiences to provide more effective and less traumatic treatment.

show abstract

“…When secretion of the salivary amylase is stimulated by direct innervations, its response is very quick, generally within one to a few minutes, a markedly quicker response than that induced by hormonal regulation 7,8 . Salivary glands amplify the low levels of norepinephrine and give a faster and more sensitive response to the psychological stress than cortisol.…”

Section: Stress Was Firstly Defined In 1935mentioning

confidence: 99%

Direct Potentiometric Method for Human Stress Determination

Sakač

Karnaš

Grčić

2015

Chem. Biochem. Eng. Q.

View full text Add to dashboard Cite

The application of platinum redox electrode for potentiometric determination of salivary amylase activity as a stress biomarker is described. The candidates were divided into two groups, physical activity -medium intensity exercise (ten candidates), and psychical activity -student exam (thirteen candidates). The experimental data were compared with an adapted theoretical model where the sensor and analyte properties were optimized using Solver and the least-squares criterion to fit a theoretical curve into the experimental data set. It was found that, in both groups, the salivary amylase activity had increased after exposure to stress activities. For physical stress, the salivary amylase activity increase was found to be up to 699 %, with a potential difference between the trained and "untrained" candidates' dependence; and for psychical stress, the salivary amylase activity increase was dispersed in a range from 117 % to 1201 %. Proposed methodology offers a fast and inexpensive way to determine salivary amylase activity and stress levels in humans.

show abstract

Performance evaluation of salivary amylase activity monitor

Cited by 210 publications

References 13 publications

Intraoral electric potential <i>via</i> oral bacterial power generation —A novel mechanism of biofilm formation

Intraoral electric potential <i>via</i> oral bacterial power generation —A novel mechanism of biofilm formation

Salivary Alpha Amylase Levels During Primary Tooth Extraction in Children Aged 6–11 Years

Direct Potentiometric Method for Human Stress Determination

Contact Info

Product

Resources

About