Human dental age estimation by calculation of pulp-tooth volume ratios yielded on clinically acquired cone beam computed tomography images of monoradicular teeth

Abstract: Secondary dentine is responsible for a decrease in the volume of the dental pulp cavity with aging. The aim of this study is to evaluate a human dental age estimation method based on the ratio between the volume of the pulp and the volume of its corresponding tooth, calculated on clinically taken cone beam computed tomography (CBCT) images from monoradicular teeth. On the 3D images of 111 clinically obtained CBCT images (Scanora^®3D dental cone beam unit) of 57 female and 54 male patients ranging in age between 10 and 65 years, the pulp–tooth volume ratio of 64 incisors, 32 canines, and 15 premolars was calculated with Simplant^® Pro software. A linear regression model was fit with age as dependent variable and ratio as predictor, allowing for interactions of specific gender or tooth type. The obtained pulp–tooth volume ratios were the strongest related to age on incisors.     

Major Differences in Minors’ Contracts: A Comparative Analysis into the Validity of Contracts with Minors in the Sport and Entertainment Industry

Liverpool Law Review - In Australia and the UK, contracts with minors in sports and entertainment are not uncommon. Generally, such contracts are voidable at the option of the minor. However, when...     

Marvelous Travel in Old Beijing with a Folk Painter

Pictures of Old Beijing Living Memories of the Ancient Capital Author:Fang Yan Paperback,436 pages Published by New Star Press in Beijing in November 2013HAVE you ever wondered what Beijing might have looked like before it was covered with skyscrapers,overpasses,gigantic concrete structures and eight-lane avenues full of congested traic?How life was in the old hutong when these narrow alleys were the city’s