Age estimation by counting incremental lines in cementum added to the average age of tooth eruption is considered an accurate method by some authors, while others reject it stating weak correlation between estimated and actual age. The aim of this study was to evaluate this technique and check the influence of periodontal disease on age estimates by analyzing both the number of cementum lines a...

objective: in comparison to clinical oral health indices, perceived oral health measures are less applied in large-scale epidemiological oral health studies in iran. the aim of this study was to measure perceived oral health among adults in tehran, iran. methods: in this cross-sectional study, perceived oral health was measured in 1100 adults in tehran by two measures: 1- non-replaced extracted...

In this cross-sectional study, the gingivitis and the calculus indices of the teeth of N = 41 cats were used to model oral health as a dependent variable using a Poisson regression. The independent variables used were "quadrant", "teeth type", "age", and "diet". Teeth type (p < 0.001) and diet (p < 0.001) were found to be significant, however, age was not (p > 0.05). Interactions were all signi...

introduction: the purpose of this in vitro study was to compare the accuracy of the new electronic apex locator raypex5 with radiography for working length determination of straight and curved root canals. materials and methods: twenty straight and single canals of maxillary central teeth and twenty curved mesiobuccal canals of mandibular molar teeth were used. access cavities were prepared and...

introduction: determining the skeletal age and remaining growth potential of patients are important factors in orthodontic treatment. evaluating cervical vertebrae development is a reliable method for determining skeletal age. this study aimed to evaluate the correlation between dental calcification and stages of skeletal maturation. materials and methods: this descriptive cross-sectional study...

Hypophosphatemic rickets (HR) is a rare hereditary disease in which dental problems in terms of spontaneous periapical infections are frequently reported. Most previous reports have been based on a small number of HR patients and have been published before the disease could be confirmed genetically. The aim of the present study was to describe the periapical and endodontic status of permanent t...

For dentists, selecting the exact tooth color is a complex task when restoring natural appearance of teeth. Several factors can affect determination shade, such as lighting conditions, teeth’s condition, viewing angle, background, eye fatigue, vision impairments, and medication use. Thus, it crucial to have complete knowledge about different shades criteria for their selection achieve best resu...