ABSTRACT
El problema de los prognatismos mandibulares es motivo de interés permanente para genetistas, antropólogos, ortopedistas, ortodoncistas, pediatras, cirujanos y psiquiatras. Se realizó un estudio prospectivo con el uso del retropropulsor y timulador del profesor Indalecio Buño en 24 pacientes con prognatismos mandibulares en dentición mixta. Conocer los cambios cefalométricos durante el uso del retropropulsor y estimulador.Se les realizaron telerradiografías de perfil, antes y doce meses después, comparando los cambios cefalométricos obtenidos como resultado de cambios esqueletales y dentoalveolares logrados, teniendo en cuenta el sexo también.Estadísticamente se encontró aumento del ángulo SNA y reducción del ángulo SNB muy significativos, lo que representó un cambio muy significativo del ángulo ANB.En relación con el sexo, hubo cambios muy significativos en el ángulo SNA en los varones y en el ángulo SNB en las hembras, además de una variación muy significativa en las hembras, del ángulo 1 SNB. Estos cambios ayudaron en la mejoría del perfil, cóncavo, así como a descruzar las mordidas anteriores que caracterizan a los pacientes con prognatismos mandibulares en el síndrome de clase III(AU)
A prospective study was conducted with the use of the retropropulsor and stimulator of Professor Indalecio Buño in 24 patients with mandibular prognathism in mixed dentition.The objective to know the cephalometric changes during the use of the retropupulsor and stimulator.Patients underwent lateral radiographs before and twelve months after, comparing cephalometric changes obtained as a result of skeletal and dentoalveolar changes achieved, taking into account sex too.The results statistically increase of SNA angle and very significant reduction in SNB angle were found, which represented a significant change of the ANB angle.The conclusions: regarding sex, there were significant changes in the SNA angle in males and in females in SNB angle, in addition to a significant variation in females of 1 SNB angle. These changes helped in improving the profile, concave, and to uncross previous bites that characterize patients with class III mandibular prognathism syndrome.
Subject(s)
Humans , Orthotic Devices/adverse effects , Orthotic Devices , Prognathism/rehabilitation , Cephalometry/psychology , Prospective StudiesABSTRACT
OBJECTIVE: To summarize the advantages and limitations of general population, high-risk and "natural experiment" longitudinal studies for studying psychological change. The English and Romanian Adoptees study is used as an example of a "natural experiment," and detailed findings are provided. METHOD: What is new is a focus on the young people who spent the whole of their life in institutional care up to the time of adoption and who did not show subnutrition. The results were compared with a composite comparison group who had not experienced institutional care or who were adopted before the age of 6 months. The outcomes were assessed in terms of previously established deprivation-specific patterns (DSPs). RESULTS: "Pure" psychosocial deprivation was associated with a substantial increase in the rate of DSPs. It was not associated with significantly impaired head growth if institutional care lasted less than 6 months, whereas thereafter there was a 2.5 standard deviation reduction. Subnutrition differed in being accompanied by impaired head and body growth even with institutional care lasting less than 6 months. In the pure psychosocial deprivation group, 45.5% showed a DSP at 15 years compared with 1.3% in the comparison group. CONCLUSION: "Pure" psychosocial deprivation (in the absence of subnutrition) had a profound effect on psychological functioning in the form of DSPs. Subnutrition had a surprisingly small effect on DSPs.
