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The study was designed to investigate the accuracy and precision of three different methods for estimation of chronological age (Liliequist and Lundberg, 1971; Demirjian ci' al., 1973 and Gustafson and Koch, 1974), based on tooth formation. Accuracy test. For each method, the mean difference and degree of linear correlation between estimated and true(More)
Longitudinal data on adolescent growth in height and skeletal development of the hand and wrist were collected as part of a prospective study of the growth and development of 212 randomly selected Swedish urban children. The onset, peak and end of the pubertal growth spurt were defined on the unsmoothed incremental curve of height. The skeletal development(More)
Mandibular treatment changes were related to somatic maturation in 70 consecutive cases of Class II malocclusion (52 boys and 18 girls, aged 10 to 16 years) treated with the Herbst appliance for an average period of 7 months. Sagittal and vertical alterations in mandibular condylar growth and sagittal changes in molar and incisor tooth position were(More)
A prospective clinical trial was conducted to determine the skeletal and dental contributions to the correction of overjet and overbite in Class III patients. Thirty patients (12 males and 18 females with a mean age of 8.4 +/- 1.7 years) were treated consecutively with protraction headgear and fixed maxillary expansion appliances. For each patient, a(More)
The pubertal growth spurt and dental, skeletal, and pubertal development have been investigated in a prospective longitudinal study of 212 randomly selected Swedish children by means of maturation level indicators suitable for use in clinical orthodontics. The sample was examined from birth to adulthood and included a representative proportion of early-,(More)
The study was designed to investigate the accuracy and precision of the development of the third mandibular molar, determined on panoramic x-rays, as an indicator of chronological age- a method which is used in Sweden to estimate chronological age in certain young foreign individuals with uncertain birth records. Accuracy test: The mean difference between(More)
A prospective clinical trial was conducted to determine the cephalometric and occlusal changes following maxillary expansion and protraction. Twenty Southern Chinese patients (eight males and 12 females with a mean age of 8.4 +/- 1.8 years) with skeletal Class III malocclusions were treated consecutively with maxillary expansion and a protraction facemask.(More)
The aim of this study was to analyse the long-term effects of Herbst treatment on the dentofacial complex with special reference to the growth period in which the patients were treated. The sample consisted of 40 male subjects with a Class II, division 1 malocclusion treated successfully with the Herbst appliance for an average period of 7 months. The(More)
Core binding factor a1 (Cbfa1) is a crucial transcription factor for osteoblasts differentiation and chondrocytes maturation in embryonic skeletal genesis, but little is known about its function in mandibular condylar growth. The aim of this study was to determine the temporal and spatial pattern of Cbfa1 expression in condylar cartilage during natural(More)