Abstract
Background: Ageing is a continuous accumulative ordinary physiological phenomena occurs upon all organs and body structures including saliva by its constituents which can influence the caries process, for that this study was conducted to determine the impact of ageing on selected chemical composition of saliva and their effects on dental caries experience characteristics at different age groups among apparently healthy men. Materials and method: A descriptive comparative study was conducted to compare between three study samples (young, middle and old age adults), thirty male in each study insert, aged (20 years, 40 years and 60 years) respectively. They were selected from private health center in Baghdad - Iraq, from the mid of November 2017until the end of February 2018, where they subjected to complete body investigations to confirm their health status, followed by thorough general body history and oral examination. Caries experience was recorded according to the criteria of WHO in1987. Un-stimulated saliva was collected according to Navazesh and Kumer and analyzed chemically to determine the level of calcium ions and alkaline phosphatase. All data then statistically analyzed by using SPSS version 22. Results: The current study, showed that the caries experience represented by DMFs increased with increasing age, by which the highest mean value of DMFs was established in the oldest age (60.37± 31.39) and the lowest mean value was noted among the youngest age (7.27±8.02). A significant differences existed between all study samples (p≤0.05). However, the missing surfaces represented the largest proportion of DMFs value when compared to Ds and Fs among all ages Iin the current study, with significant differences (p≤0.05) was followed by the decay fraction that found to be increased with age but with no significant difference. Salivary Calcium ions showed decreasing with increasing age with statically significant differences among different study samples while salivary alkaline phosphatase was increased with increasing age with no significant differences. Concerning the caries experience among the study samples, the salivary Ca+2 ions inversely correlated while alkaline phosphates correlated positively with caries experience. Conclusion: there is a significant age related changes on the selected chemical constituents of saliva that could affect the caries experience
Highlights
Aging is a time-dependent biological process involved changes in organ structure after maturity and the functions of organs can be regularly changed
Very little information is available, concerning the effect of age on the salivary calcium and alkaline phosphatase and caries experience among apparently healthy adults, no previous Iraqi study is present at hand to investigate the impact of ageing on this salivary chemical consequents and dental caries experience, so this study was done to determine the effect of age on salivary calcium and alkaline phosphatase and caries experience among apparently healthy adults participants
Dental caries experience presented by DMFs index and its fractions was illustrated in the table 3 .It was clear that caries experience (DMFs) was increased with age, in which it was found to be higher mean among old adults (60.37± 31.39) when compared to the mean of DMFs among middle age (22.07± 20.33) and young adults (7.27±8.02)
Summary
Aging is a time-dependent biological process involved changes in organ structure after maturity and the functions of organs can be regularly changed. Alkaline Phosphatase includes a group of enzymes that catalyze the hydrolysis of phosphate esters in a basic surroundings This enzyme shows a vital role in the bone metabolism and bone homeostasis by probably accumulating calcium ions and matrix vesicles during calcification process [5]. The present study was approved by the Committee of pedodontics and preventive department at Baghdad College of Dentistry The inclusion criteria .Didn’t have any systemic disease and apparently healthy according to the findings of full body investigations they did. Very little information is available, concerning the effect of age on the salivary calcium and alkaline phosphatase and caries experience among apparently healthy adults, no previous Iraqi study is present at hand to investigate the impact of ageing on this salivary chemical consequents and dental caries experience, so this study was done to determine the effect of age on salivary calcium and alkaline phosphatase and caries experience among apparently healthy adults participants
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