BACKGROUND Age determination has great importance in many clinical decisions, being commonly used in odontopediatrics, orthodontics, pediatrics, and forensic medicine. The Nolla and Demirjian et al. methods have been used for these purposes. However, estimating chronological age by means of the dental mineralization stage is not a straightforward analysis, and it is fundamental to test the vali...

BACKGROUND Women have been able to delay childbearing since effective contraception became available in the 1960s. However, fertility decreases with increasing maternal age. A slow but steady decrease in fertility is observed in women aged between 30 and 35 years, which is followed by an accelerated decline among women aged over 35 years. A combination of delayed childbearing and reduced fecund...

AIM This study was an attempt, to determine chronological age, dental age and skeletal age, and to establish interrelationship, amongst the dental, skeletal and chronological ages and their differences if any between rural and urban female children. The study included 80 girls aged 8 to 14 years from rural and urban areas. MATERIAL AND METHODS The subjects were divided into 4 Groups: Group I,...

To investigate if an association exists in parous women between metoclopramide-induced prolactin (PRL) release and chronological age at first full-term pregnancy and to compare their response to a group of non-parous women, we studied 139 healthy, non-lactating women, aged 15.8-48.2 years, on days 18-22 of their menstrual cycle (except two post-menopausal women). There were 61 parous women divi...

The aims of this study were to develop a computerized program for objectively evaluating skeletal maturation on cephalometric radiographs, and to apply the new method to Brazilian subjects. The samples were taken from the patient files of Oral Radiological Clinics from the North, Northeast, Midwest and South regions of the country. A total of 717 subjects aged 7.0 to 15.9 years who had lateral ...

Variations in the timing of emergence of primary teeth are under strong genetic control, but there is also a significant contribution from external factors. The aim of this study was to evaluate the influence of preterm birth, birth weight and length, and feeding practices during the first 6 months of life on the timing of emergence of the first primary tooth. Data on pregnancy duration, birth ...

Serum FSH and LH levels in 104 patients with disorders of sexual development were determined by radioimmunoassay and compared with serum FSH and LH levels in 164 normal individuals.32 of 35 gonadal dysgenesis patients (ages 4.8-18.9 yr) had serum FSH levels which were elevated above the range of normal for chronological age, and 19 had serum LH levels similarly elevated. All patients with eleva...

This study utilized an experimental format to examine the influence of age designations upon differential ratings of a stimulus person. Two experiments were conducted—one in a college-age population (N = 280); the other in a grouping of older, retired adults (N = 96). In both settings, subjects heard a recorded discussion by a SP described as being either 25 or 65 years of age. Ratings were mad...