Evaluation of the relationship between caries indices and salivary secretory IgA, salivary pH, buffering capacity and flow rate in children with Down's syndrome

2006 ◽  
Vol 51 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Dilsah Cogulu ◽  
Ertugrul Sabah ◽  
Necil Kutukculer ◽  
Ferda Ozkinay
Keyword(s):  
Flow Rate ◽  
Down's Syndrome ◽  
Down’S Syndrome ◽  
Buffering Capacity ◽  
Secretory Iga ◽  
Ph Buffering ◽  
Salivary Ph ◽  
The Relationship ◽  
Ph Buffering Capacity

scholarly journals Estimation of salivary pH, buffering capacity, flow rate, caries prevalence and oral manifestation in chronic renal failure patients undergoing dialysis

2020 ◽  
Vol 10 (2) ◽  
pp. 19-24
Author(s):  
Bidhata Ojha ◽  
Radha Baral ◽  
Dipshikha Bajracharya
Keyword(s):  
Renal Failure ◽  
Chronic Renal Failure ◽  
Flow Rate ◽  
Oral Hygiene ◽  
Buffering Capacity ◽  
Caries Prevalence ◽  
Oral Manifestation ◽  
Ph Buffering ◽  
Salivary Ph ◽  
Ph Buffering Capacity

Background: Renal failure is a process that expresses a loss of functional capacity of the nephrons, independently of its etiology. Although acute renal failure is reversible in the majority of cases, chronic renal failure presents a progressive course towards terminal renal failure. Hemodialysis is the most widely used technique leading to systemic alterations, oral complications and variations in the flow and composition of the saliva. The purpose of this study was to estimate salivary pH, buffering capacity, flow rate in chronic renal failure patients undergoing hemodialysis with its oral manifestation and caries prevalence. Methods: Saliva samples were collected from 40 patients with chronic renal failure undergoing dialysis and 40 healthy subjects after taking the informed consent. Saliva samples were then taken to the lab for processing. Salivary pH, buffering capacity and flow rate was estimated. DMFT was calculated. The statistical analysis was done using SPSS version 23. Results: A statistically significant rise in salivary pH, buffering capacity with decrease in flow rate was noted in chronic renal failure patients undergoing dialysis compared to controls. Furthermore, decrease in DMFT value was noted in CRF group despite of poor oral hygiene of the patient. We could also observe different oral manifestations in CRF group among which uremic fetor being the commonest. Conclusions: Our report suggest that saliva is noninvasive tool which act as an adjunct in diagnos­ing oral lesions and manifestations in CRF patients whose oral hygiene is often neglected with their reluctance in long term dental appointment in the middle of regular hemodialysis schedule.

scholarly journals Correlation between pH, buffering capacity, calcium and dental caries in schoolchildren

2018 ◽  
Vol 63 (01) ◽  
pp. 63-68
Author(s):  
Efka Zabokova Bilbilova ◽  
Ana Sotirovska Ivkovska ◽  
Olivera Sarakinova ◽  
Olga Kokoceva Ivanovska ◽  
Natasha Stavreva
Keyword(s):  
Dental Caries ◽  
Free Group ◽  
Buffer Capacity ◽  
Saliva Sample ◽  
Buffering Capacity ◽  
Active Group ◽  
Ph Buffering ◽  
Ph Values ◽  
Salivary Ph ◽  
Ph Buffering Capacity

The aim of this study was to determine salivary pH, buffering capacity and calcium levels in caries-free and caries-active children. We examined 80 children of both genders, 15 years of age. Subjects were divided into four groups as follows: caries-free females, caries-active females, caries-free males, caries-active males; each group consisted of 20 subjects. The unstimulated saliva sample was collected by the spitting method and then pH, buffering capacity and calcium in saliva was measured. The results showed that mean level of buffering capacity of saliva was decreased significantly in the caries-active group as compared to caries-free group. The obtained data showed that the mean levels of pH and calcium were decreased in the caries-active group as compared to the caries-free group, but the difference was not statistically significant. The saliva with its constituents plays an important role in maintaining oral and especially dental health. Salivary pH values were found to be higher in the caries-free group. In our study, there was no significant correlation of pH values and caries activity with gender. Buffer capacity values were significantly lower in the caries-active group than in the caries-free group. There were significant differences when the groups were compared in the caries-active group where buffer capacity values were higher in boys than in girls. Calcium content of saliva was higher in the caries-free group. The results obtained in this study related to the values of the pH, buffering capacity and calcium in saliva, may serve as parameters for determining the caries risk patients, and accordingly to plan and carry appropriate caries preventive measures. Keywords: saliva, dental caries, pH, buffer capacity, calcium

Salivary Flow Rate, pH, Buffering Capacity, Total Protein, Oxidative Stress and Antioxidant Capacity in Children with and without Dental Caries

2018 ◽  
Vol 42 (6) ◽  
pp. 445-449 ◽  
Author(s):  
Sudharani A Pyati ◽  
R Naveen Kumar ◽  
Vinod Kumar ◽  
N H Praveen Kumar ◽  
K M Parveen Reddy
Keyword(s):  
Antioxidant Capacity ◽  
Flow Rate ◽  
Total Protein ◽  
Chemical Properties ◽  
Salivary Flow ◽  
Buffering Capacity ◽  
Salivary Flow Rate ◽  
Ph Buffering ◽  
Total Antioxidant ◽  
Ph Buffering Capacity

Objectives: To measure and compare the levels of salivary flow rate, pH, buffering capacity, total protein, malondialdehyde (MDA) and total antioxidant capacity (TAC) between caries active and caries free children and to study the correlation between the DMFS/dfs score and above salivary parameters in caries active children. Study design: 50 caries active (DMFS/dfs ≥ 5) and 50 caries free (DMFS/dfs = 0) children aged between 6 to 12 years were included in the study. From all the children, unstimulated, mid-morning saliva samples were collected and salivary flow rate was calculated. Salivary pH, buffering capacity, total protein, MDA and TAC were measured. Results: The mean levels of salivary flow rate, pH, buffering capacity were significantly decreased (p < 0.05) and total protein, MDA and TAC were significantly increased (p < 0.05) in caries active children when compared to caries free controls. There was a proportionate decrease (p < 0.05) in salivary flow rate, pH and buffering capacity and proportionate increase (p > 0.05) in salivary total protein, MDA and TAC as DMFS/dfs score increased in caries active children. Conclusions: Significant alteration in the levels of salivary flow rate, pH, total proteins, MDA and TAC and their correlation with DMFS/dfs score in caries active children suggest, the levels of these physico-chemical properties of saliva can act as strong indicators of caries status in children.

Soil pH buffering capacity: a descriptive function and its application to some acidic tropical soils

Soil Research ◽  
2010 ◽  
Vol 48 (3) ◽  
pp. 201 ◽  
Author(s):  
Paul N. Nelson ◽  
Ninghu Su
Keyword(s):  
Organic Matter Content ◽  
Buffering Capacity ◽  
Sigmoid Function ◽  
Titration Method ◽  
Ph Buffering ◽  
Variable Charge ◽  
Management Interventions ◽  
Ph Buffer ◽  
The Relationship ◽  
Ph Buffering Capacity

Calculation of soil acidification rates requires knowledge of pH buffering capacity (pHBC), which is measured using titration methods. The pHBC is often quoted as a single value for a particular soil, implying a linear relationship between pH and the amount of acid or alkali added. However, over its whole range, the relationship is sigmoid rather than linear, and in many soils pH is low or high enough to be outside of the linear range. In this work we fitted a simple sigmoid function to pH buffer curves of 8 tropical Australian soils obtained using one titration method and 58 Papua New Guinean (PNG) soils obtained using another titration method. The function described the curves well for all soils (adjusted r2 > 0.93 for all samples and >0.99 for 90% of samples), irrespective of the titration method, allowing pHBC to be calculated as a function of pH across the range of pH values established. Using the function, the contribution of variable charge to pHBC was calculated for the PNG soils; on average it was 93% at the pH buffer curves’ inflection point, which corresponds with the soil’s minimum pHBC. Factors other than variable charge became important at pH (1 : 5, 0.002 m CaCl2) values <4.8 or >6.0. The relationship between pHBC and soil organic matter content was closest at pH 6.0–6.5. Application of the sigmoid function could facilitate more accurate assessments of acidification risks, acidification rates, and potential management interventions, particularly as soils become increasingly acidic.

Salivary Parameters and Caries Indices in Children with Black Tooth Stains

2012 ◽  
Vol 36 (3) ◽  
pp. 285-288 ◽  
Author(s):  
Garan Aysun ◽  
Serap Akyüz ◽  
Leyla Koç Öztürk ◽  
Ayşen Yarat
Keyword(s):  
Flow Rate ◽  
Atomic Emission ◽  
Salivary Flow ◽  
Buffering Capacity ◽  
Emission Spectrometry ◽  
Caries Experience ◽  
Ph Buffering ◽  
Calcium And Phosphorus ◽  
The Relationship ◽  
Phosphorus Levels

Objective: Black tooth stain in children has been associated commonly with a low caries experience. The present study aimed to to compare salivary factors and caries indices in children with and without black tooth stain and to investigate the relationship between caries and caries associated salivary factors in these children. Study Design: Salivary flow rate, pH, buffering capacity, total calcium and phosphorus were determined. Calcium and phosphorus levels were assayed by Inductive Coupled Plasma with Atomic Emission Spectrometry. DMFT and dft indices were evaluated according to WHO criteria. Results: Significantly higher levels of salivary buffering capacity and calcium, and lower flow rate were found in children with black tooth stain compared with those of without black tooth stain (p &lt; 0.01, p = 0.044 and p = 0.037, respectively). The differences in phosphorus and pH were not significant between the groups. The dft index was found to be significantly lower in children with black tooth stain than children without black tooth stain (p = 0.030). However, DMFT did not change between the groups. There is no relationship between salivary parameters and caries indices in children with black tooth stain. Conclusion: It is suggested that low caries tendency seen in children with black tooth stain may be associated with high salivary calcium and buffering capacity.

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