The impact of dental environment stress on caries experience, salivary flow rate and uric acid

Background: Several pathologies of the oral cavity have been associated with stress. Dental students need to gain assorted proficiencies as theoretical knowledge, clinical proficiencies, and interpersonal dexterity which is accompanied with high level of stress. Uric acid is the major antioxidant in saliva. The aim of this study is to assess the dental caries experience among dental students with different levels of dental environment stress in relation to physicochemical characteristics of whole unstimulated saliva. Materials and Methods: the total sample is composed of 300 dental students (73 males, 227 female) aged 22-23 years old, from collage of dentistry / university of Baghdad, from the 4th and 5th grade. The total sample was classified into three categories (mild stress, moderate stress and severe stress) according to Dental environment stress questionnaire (DESQ); Diagnosis and recording of dental caries were assessed according to Decay, Missed, Filled surface and teeth index (DMFS, DMFT) of WHO criteria in 1987. Unstimulated salivary samples were collected from the 95 dental students from the mild stress group (27 male, 28 female) and from the severe stress group (11 male, 29 female). Then, salivary flow rate was measured and chemically analyzed to determine salivary uric acid concentration. All data were analyzed using statistical package for social science (SPSS) version 21. Results: The mean value of the DMFT and DS fraction was higher among severe stress group of dental environment stress scale with no significant differences (P≥ 0.05), while DMFS, FS and MS fractions were higher among moderate stress group of dental environment stress scale with no significant differences (P≥ 0.05). The data from salivary analysis showed that the mean value of salivary flow rate was lower among severe dental environment stress category than mild dental environment stress category but the difference was statistically not significant, while the mean value of uric acid was higher among students with severe dental environment stress than students with mild dental environment stress with statistically significant difference. The flow rate was negatively correlated with caries experience among both mild and severe stress groups except for the DS was positively correlated with flow rate among students with mild stress. The correlation of uric acid with DMFT was negative among students with mild stress while among severe stress group was positive; however all these correlations were not statistically significant. Conclusion: Dental environment stress appears to affect oral health, shown by higher caries prevalence among dental students with moderate and severe dental environment stress level by affecting the normal level of salivary flow rate and uric acid. Keywords: Dental environment stress, stress, dental caries, flow rate, uric acid.

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Determining the relationship among stress, xerostomia, salivary flow rate, and the quality of life of undergraduate dental students

Journal of Taibah University Medical Sciences ◽

10.1016/j.jtumed.2020.10.019 ◽

2020 ◽

Author(s):

Saira Atif ◽

Sofia A. Syed ◽

Ume R. Sherazi ◽

Sadia Rana

Keyword(s):

Quality Of Life ◽

Flow Rate ◽

Salivary Flow ◽

Dental Students ◽

Salivary Flow Rate ◽

The Relationship

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Oxidative status among a group of pregnant women in relation to gingival health condition

Journal of Baghdad College of Dentistry ◽

10.26477/jbcd.v31i4.2716 ◽

2019 ◽

Vol 31 (4) ◽

Author(s):

Sarar N Al Najjar ◽

Baydaa Hussein

Keyword(s):

Oxidative Stress ◽

Uric Acid ◽

Pregnant Women ◽

Flow Rate ◽

Salivary Flow ◽

Health Condition ◽

Salivary Flow Rate ◽

Control Group ◽

Gingival Health ◽

Significant Difference

Background: pregnancy as a systemic condition causes changes in the functioning of human body as a whole and specifically in the oral cavity and it also is considered as a stressful condition. These changes may favor the increase of oxidative stress. Aim: The aim of this study was to estimate the level of marker of oxidative stress (malondialdehyde) and antioxidant (uric acid) in saliva of pregnant compared to non-pregnant women and to assess the gingival health condition in both groups. Additionally, unstimulated salivary flow rate was determined in both groups. Subjects, materials and methods: The study group consisted of sixty pregnant women, they were divided into three equal groups according to trimester (20 pregnant women for each trimester), and they were selected randomly from the Maternal and Child Health Care Centers in Baghdad city, their age range was 20-25 years. In addition to 60 newly married non-pregnant women as a control group and matched with age. Collection of unstimulated salivary samples was carried out under standardized conditions. Dental plaque and gingival indices were used for recording the oral hygiene and gingival health respectively. Salivary flow rate was measured then salivary samples were analyzed to determine the level of salivary antioxidant (uric acid) and lipid peroxidation biomarker of oxidative stress (malondialdehyde). Result: The data analysis of the present study found that the level of salivary malondialdehyde was higher among pregnant women compared to non-pregnant controls with statistically significant difference (p<0.05), while salivary uric acid was statistically significantly lower among the pregnant women compared to non-pregnant controls (p<0.05). Salivary analysis demonstrated that the salivary flow rate was statistically significantly lower among the pregnant women compared to non-pregnant controls (p<0.05). The values of plaque and gingival indices were higher among pregnant women compared to non-pregnant controls with statistically significant difference (p<0.05). The correlation of gingival index with plaque index in study and control group was significant (p<0.05), while with others variables were non-significant (p>0.05). Conclusion: The current study showed an increase in oxidative status in saliva during pregnancy that could affect gingival health which was also affected by oral hygiene.

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The Perception of Stress among Clinical Dental Students

World Journal of Dentistry ◽

10.5005/jp-journals-10015-1197 ◽

2013 ◽

Vol 4 (1) ◽

pp. 24-28 ◽

Cited By ~ 12

Author(s):

Khalid H Al-Samadani ◽

Ayman Al-Dharrab

Keyword(s):

Clinical Training ◽

Descriptive Study ◽

Dental Students ◽

Fear Of Failure ◽

Male Students ◽

Severe Stress ◽

Cross Sectional ◽

Know How ◽

Environment Stress ◽

Dental Environment

ABSTRACT Objective To determine the prevalence of stress among clinical students from Faculty of Dentistry, King Abdul Aziz University, Jeddah. Materials and methods A cross-sectional descriptive study was carried out in May 2012 on fourth, fifth and sixth year clinical dental students from Faculty of Dentistry, King Abdul Aziz University, Jeddah, using a modified form of dental environment stress (DES) questionnaire. A total of 353 questionnaires were distributed and incomplete questionnaires were excluded from the study. SPSS version 15 was used to do statistical analysis. Results A total of 353 students were asked to complete the questionnaire and 232 (65.7%) responded; of these 120 (51.7%) were males and remaining 112 (48.3%) were females. More or less all the students were having stress. In male students severe stress was due to difficulty in getting suitable patient (51%) and the patient who were arriving late or not coming on appointment, p = 0.16, whereas in female they were having severe stress due to fear of failure (59%), p = 0.02, examination and grading (57%) and completing examination requirement (52%). In male, amount of academic overload was also main cause of severe stress (p = 0.03). Sixth-year students were having more stress due to amount of overload (59.1%), lack of time to do assigned work (53.4%), difficulty to get suitable patient (71.6%) and patient arriving late or not coming on appointment (64.8%). Fifth-year students were more stressed due to completing examination requirement (65.7%). Fourth-year students were having more stress due to fear of failure (58.4%) and examination and grading (58.4%). Conclusion The finding of this study show some considerable degree or severe stress among the students. Longitudinal studies that include preclinical dental students should be carried out to know how the pattern of stress varies during preclinical and clinical training period. How to cite this article Al-Samadani KH, Al-Dharrab A. The Perception of Stress among Clinical Dental Students. World J Dent 2013;4(1):24-28.

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Acute Salivary Flow Rate Response to Transcutaneous Electrical Nerve Stimulation Versus Electro-acupuncture

Case Medical Research ◽

10.31525/ct1-nct04211324 ◽

2019 ◽

Author(s):

Keyword(s):

Flow Rate ◽

Nerve Stimulation ◽

Transcutaneous Electrical Nerve Stimulation ◽

Salivary Flow ◽

Salivary Flow Rate ◽

Electrical Nerve Stimulation

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Effect of a newly developed pastille on the salivary flow rate in subjects with dry mouth symptoms: a randomized, controlled, monocentric clinical study

BMC Oral Health ◽

10.1186/s12903-021-01471-w ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

S. Bielfeldt ◽

D. Wilhelm ◽

C. Neumeister ◽

U. Schwantes ◽

K. -P. Wilhelm

Keyword(s):

Surface Tension ◽

Flow Rate ◽

Gum Arabic ◽

Salivary Flow ◽

Salivary Flow Rate ◽

Dry Mouth ◽

Main Ingredient ◽

Control Product ◽

Swallowing Problems ◽

The Mean

Abstract Background Xerostomia is associated with several diseases and is a side effect of certain drugs, resulting from reduced saliva secretion. Often, aged and sometimes younger people suffer from (idiopathic) xerostomia. Chewing gum and sucking pastilles may relieve symptoms of xerostomia by increasing the salivary flow rate due to the mechanical effect of sucking and gustatory stimulation. Swallowing problems and the urge to cough or experiencing a tickling sensation in the throat might be alleviated through a reduction in dry mouth symptoms. We investigated whether a pastille containing four polysaccharides increased the salivary flow rate and relieved the symptoms of dry mouth. Methods Participating subjects with xerostomia were randomized into two equally balanced treatment groups. Subjects received the pastille on Day 1 and a control product (Parafilm®) on Day 3, or vice versa. Unstimulated saliva was collected every 2.5 min for 0–10 min. Stimulated saliva was collected after subjects sucked the pastille or the control product. The salivary flow rate was determined gravimetrically, and, in parallel, the feeling of dry mouth was assessed using a visual analog scale. Saliva surface tension was measured in pooled saliva samples (0–5 min of sampling). Additionally, in stimulated saliva from six subjects who sucked the pastille, the presence of the main ingredient—gum arabic—was examined by Raman spectroscopy. Results Chewing the pastille significantly increased the mean salivary flow rate by 8.03 g/10 min compared to the mean changes after chewing the control product (+ 3.71 g/10 min; p < 0.0001). The mean score of dry mouth was significantly alleviated by the pastille (− 19.9 ± 17.9 mm) compared to the control product (− 3.3 ± 18.1 mm). No difference between the two products was seen regarding the saliva surface tension. Gum arabic was present in the saliva of all investigated subjects for up to 10 min after sucking the pastille. Conclusions The pastille was well tolerated and effective in increasing the salivary flow rate and reducing mouth dryness after sucking. These results were in line with the detection of the main ingredient, gum arabic, in saliva for up to 10 min after sucking the pastille. Trial registration German Register Clinical Trials (Deutsches Register Klinische Studien, DRKS) DRKS-ID: DRKS00017393, Registered 29 May 2019, https://www.drks.de/drks_web/navigate.do?navigationId=trial. HTML&TRIAL_ID = DRKS00017393.

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Salivary flow rate and the risk of cognitive impairment among Korean elders: a cross-sectional study

BMC Geriatrics ◽

10.1186/s12877-021-02200-2 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Minh-Tung Do ◽

Huong Vu ◽

Jong-Koo Lee ◽

Sang-Min Park ◽

Joung-Sik Son ◽

...

Keyword(s):

Cognitive Impairment ◽

Flow Rate ◽

Salivary Flow ◽

Cross Sectional Study ◽

Community Dwelling ◽

Salivary Flow Rate ◽

Multivariable Logistic Regression Analysis ◽

Sectional Study ◽

Cross Sectional ◽

Denture Status

Abstract Background Salivary function has been suggested to be associated with cognitive impairment. However, the effect of salivary flow rate (SFR) on cognitive impairment remains unclear. This study aimed to investigate whether SFR is associated with cognitive impairment among Korean elders. Methods This cross-sectional study included 649 elders aged 65 and older in the Korean community-dwelling population. Cognitive impairment was assessed using the Mini-Mental Status Examination. Unstimulated SFR was measured and dichotomized. Denture status, age, sex, education level, smoking, drinking, diabetes, hypertension, and obesity were considered confounders. Multivariable logistic regression analysis was applied to assess the adjusted association. Stratified analysis by sex and denture status was performed to clarify the effect modification. Results Participants without cognitive impairment showed a higher SFR level than those with cognitive impairment (0.81 mL/min for non-cognitive impairment versus 0.52 mL/min for cognitive impairment, p < 0.001). After controlling for confounders, participants with low SFR (< 0.3 mL/min) were more likely to have cognitive impairment by 1.5 times than participants with normal SFR (odds ratio [OR] = 1.5, confidence interval [CI] = 1.05–2.10). The association of low SFR with cognitive impairment was higher in women and dentate participants: about 10% higher in women (OR = 1.63, CI = 1.07–2.50) and about 22% higher in dentate participants (OR = 1.82, CI = 1.41–2.90). Conclusions Salivary flow rate is independently associated with cognitive impairment among Korean elders. The association was modified in females and dentate elders. Physicians and dentists should consider low SFR and cognitive impairment as a risk factor between them in clinics.

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