Two studies using commercially fed cattle were conducted to determine the relationship of the USDA bone ossification-based maturity system to one based on the number of permanent incisors present at slaughter. These studies showed that 91.5 to 100% of cattle with zero permanent incisors (< 23.8 mo of age), 89.1 to 97.5% of cattle with two permanent incisors (23.8 to 30.4 mo of age), 75 to 82.2%...

Various environmental factors have been associated with the timing of eruption of primary dentition, but the evidence to date comes from small studies with limited information on potential risk factors. We aimed to investigate associations between tooth emergence patterns and pre-conception, pregnancy and postnatal influences. Dentition patterns were recorded at ages 1 and 2 years in 2915 child...

OBJECTIVES The objective of the present study was to investigate the caries experience and patterns in a sample of 6- and 13- year old school children and to estimate the contributing roles of the likely risk indicators. STUDY DESIGN Data were obtained from 400 (196, 6-year old and 204, 13-year old) school children. A questionnaire was sent to the children parents to measure socioeconomic, so...

The hypothesis of this study is that children with unexpected early apical resorption of the primary teeth are also predisposed to resorption in the permanent dentition. Accordingly, the aim was to perform a longitudinal study focussing on the permanent teeth in children with unexpected early apical resorption in the primary dentition. Panoramic radiographs of 12 children (7 boys and 5 girls) a...

this report presents a rare case of bi-rooted primary maxillary canines. a 6-year-old girl presented at the department of pediatric dentistry, faculty of dentistry, mashhad university of medical sciences, iran, with the chief complaint of pain in the lower right quadrant of her dentition. radiographic examination revealed bifurcation of primary maxillary canine roots. this report discusses the ...

For patients in the deciduous dentition, early treatment often means treatment of lateral crossbites. With lateral crossbites occurring in 10% to 15% of children, one might ask: why treat these children early? One common answer is because of the risk for unilateral masticatory function and growth restriction, which might later lead to temporomandibular joint problems or facial asymmetry. Howeve...

The masticatory muscles are the ones of particular academic interest: they are the principal effectors for the various jaw movements during the act of mastication; also they cause intricate changes in facial blood distribution and in dental occlusion during the act of mastication and various facial expressions. Of the masticatory muscles the temporal muscle is especially rich in morphological v...

Purpose The American Academy of Pediatric Dentistry (AAPD) recognizes the importance of managing the developing dentition and occlusion and its effect on the well-being of infants, children, and adolescents. Management includes the recognition, diagnosis, and appropriate treatment of dentofacial abnormalities. This guideline is intended to set forth objectives for management of the developing d...

The mixed dentition pantomogram is routinely used in paediatric patients. This paper discusses the value of the pantomogram for early identification of problems in dental development during the mixed dentition stage. Aspects regarding dental maturity, leeway space, the sequence of eruption of the permanent teeth, anomalies and the development of the canines will be reviewed.