The purpose of this study was to evaluate the degree of demineralization of artificially induced caries-affected human dentin by an in vitro microbiological method. The occlusal surfaces of 6 human molar teeth were abraded until a flat surface was obtained, and the enamel was removed to expose the occlusal dentin surface. These teeth were sectioned in 12 halves in the vestibular-lingual directi...

Contact X-ray microradiography is the current gold standard for measuring mineral densities of partially demineralized tooth specimens. The X-ray sensitive film specified in the last J Res NIST publication on the subject is no longer commercially available. OBJECTIVES: Develop a new microradiographic method by identifying a commercially available film with greater than 3000 lines per millimeter...

The studies presented in this thesis were funded by Top Institude Food and Nutrition, a public-private partnership in pre-competitive research. Introduction 7 CHAPTER 2 Interindividual variation, correlations, and sex-related differences in the salivary biochemistry of young healthy adults 21 CHAPTER 3 A study of the variation in the salivary peptide profiles of young healthy adults acquired us...

The demineralization of tooth enamel, which can be triggered by acidic foods and drinks at pH < 5.5, initiate dental caries. Yogurt probiotic supplements are that often consumed to help digestive function improve the immune system. However, both have a low pH, thereby, long time consumption trigger process. This study aims evaluate enamel hardness after applying yogurt supplements, was carri...

A n investigation of mineral density surrounding lacunar resorption sites in cases of both internal and external root resorption, was carried out on 37 human primary and permanent teeth. In addition, equivalent areas of the roots of 14 normal appearing teeth were studied for comparison. Thirty-two of the teeth were analyzed using microradiographic and microhardness techniques and the remainder ...

This paper describes early findings of evaluations of the International Caries Detection and Assessment System (ICDAS) conducted by the Detroit Center for Research on Oral Health Disparities (DCR-OHD). The lack of consistency among the contemporary criteria systems limits the comparability of outcomes measured in epidemiological and clinical studies. The ICDAS criteria were developed by an inte...

Tooth decay is a serious health risk and a significant contributor to health care costs in both industrialized and developing nations. Tooth decay is the end result of a change in the balance of plaque ecology towards more acidogenic and aciduric bacterial species. Frequent and prolonged periods of low plaque pH, facilitated by the presence of fermentable simple carbohydrates drive the cycles o...

INTRODUCTION Tooth bleaching is based on hydrogen peroxide application. The Objective of this study was to determine whether dental bleaching agents affect metalloproteinases-mediated dentin collagen degradation. METHODS Human dentin specimens were subjected to different treatments: (1) untreated dentin; (2) demineralization by 37% phosphoric acid (PA); (3) demineralization by 37% PA, followe...

Background : Children are a population that has high potential to be exposed caries. Calcium deficiency due demineralization of the enamel can cause decrease in hardness during caries pathway. It anticipated with application re-mineralizing materials. Duck eggshells contain amount calcium. This research aimed examine effect duck eggshell extract gel (Anas plathyrhynchos domesticus) on primary t...

Genetic studies have shown that variations in enamel formation genes are associated with caries susceptibility. The aim of this study was to test in vitro whether variants in these genes are associated with dental enamel demineralization in a Streptococcus mutans biofilm model. DNA and enamel samples were obtained from 213 individuals. DNA was extracted from saliva, and 16 single nucleotide pol...