RESUMEN
Objectives: The purpose of this study was to assess cranial base and maxillary growth in patients with Class IItype I malocclusions when treated with Frankels functional regulator (FR-1b). Study Design: The treatment group was made up of 43 patients that were divided into two groups: prepubescent (n: 28), and pubescent (n: 15). The control group included 40 patients who did not receive any kind of treatment and were likewise divided into a prepubescent group (n: 19), and a pubescent group (n: 21). A computerized cephalometric study was carried out and superimpositions were done in order to assess the antero-posterior, vertical and rotational movement of the maxilla. Results: The results indicate that anterior cranial length is not affected by the regulator but the cranial deflection of the treatment group was diminished. Although a slight counterclockwise rotation effect on the upper jaw was observed due to treatment, no growth restriction of the maxilla in a vertical or antero-posterior direction was observed compared to other non-treated Class II-type I malocclusion patients. Conclusion: The functional regulator does not have any effect on anterior cranial length, but it does affect the angulation of the cranial base. According to our results, the appliance has demonstrated a flattening effect of the cranial base (p<0.05) in the treated sample. The functional regulator induces counterclockwise rotation rather than vertical or sagittal changes in the maxilla (AU)
Asunto(s)
Humanos , Ortodoncia Correctiva/métodos , Cefalometría/métodos , Maxilares/anatomía & histología , Base del Cráneo/anatomía & histología , Maloclusión Clase II de Angle/terapiaRESUMEN
Objectives: The purpose of this study was to assess mandibular growth in patients with Class II division 1 malocclusions when treated with Fränkel's functional regulator 1b. Study Design: The treatment group was made up of 43 patients that were divided into two groups: prepubescent (n:28), and pubescent (n:15). The control group included 40 patients who did not receive any kind of treatment and were likewise divided into a prepubescent group (n:19), and a pubescent group (n:21). A computerized cephalometric study was carried out and superimpositions were done in order to assess the antero-posterior, vertical and rotational movements of the mandible. A two-way ANOVA with interaction was done to compare the changes between the control group and the treatment group, while the Student t for independent samples was used to compare each age group. Results: The Gnathion and Gonion points showed significant differences in the whole sample (p<0.001) as well as in the prepubescent (p<0.001) and pubescent groups (p<0.05). Rotational changes of the mandible measured using the facial axis and mandibular plane showed no statistical differences between both groups (p>0.05). Conclusion: The results show that the FR produces vertical orthopedic growth in the mandible but not horizontal growth compared to non-treated Class II-type I malocclusion patients. No rotational changes were found in the mandible, but we did record mandibular growth along the inclination of the facial axis (AU)
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Asunto(s)
Humanos , Mandíbula/crecimiento & desarrollo , Aumento de la Cresta Alveolar/métodos , Avance Mandibular/métodos , Aparatos Ortodóncicos , Maloclusión Clase II de Angle/complicacionesRESUMEN
OBJECTIVES: The purpose of this study was to assess mandibular growth in patients with Class II division 1 malocclusions when treated with Fränkel's functional regulator 1b. STUDY DESIGN: The treatment group was made up of 43 patients that were divided into two groups: prepubescent (n:28), and pubescent (n:15). The control group included 40 patients who did not receive any kind of treatment and were likewise divided into a prepubescent group (n:19), and a pubescent group (n:21). A computerized cephalometric study was carried out and superimpositions were done in order to assess the antero-posterior, vertical and rotational movements of the mandible. A two-way ANOVA with interaction was done to compare the changes between the control group and the treatment group, while the Student t for independent samples was used to compare each age group. RESULTS: The Gnathion and Gonion points showed significant differences in the whole sample (p<0.001) as well as in the prepubescent (p<0.001) and pubescent groups (p<0.05). Rotational changes of the mandible measured using the facial axis and mandibular plane showed no statistical differences between both groups (p>0.05). CONCLUSION: The results show that the FR produces vertical orthopedic growth in the mandible but not horizontal growth compared to non-treated Class II-type I malocclusion patients. No rotational changes were found in the mandible, but we did record mandibular growth along the inclination of the facial axis.
Asunto(s)
Maloclusión Clase II de Angle/terapia , Mandíbula/crecimiento & desarrollo , Aparatos Ortodóncicos Funcionales , Adolescente , Niño , Femenino , Humanos , MasculinoRESUMEN
OBJECTIVES: The purpose of this study was to assess cranial base and maxillary growth in patients with Class II-type I malocclusions when treated with Frankel' s functional regulator (FR-1b). STUDY DESIGN: The treatment group was made up of 43 patients that were divided into two groups: prepubescent (n: 28), and pubescent (n: 15). The control group included 40 patients who did not receive any kind of treatment and were likewise divided into a prepubescent group (n: 19), and a pubescent group (n: 21). A computerized cephalometric study was carried out and superimpositions were done in order to assess the antero-posterior, vertical and rotational movement of the maxilla. RESULTS: The results indicate that anterior cranial length is not affected by the regulator but the cranial deflection of the treatment group was diminished. Although a slight counterclockwise rotation effect on the upper jaw was observed due to treatment, no growth restriction of the maxilla in a vertical or antero-posterior direction was observed compared to other non-treated Class II-type I malocclusion patients. CONCLUSION: The functional regulator does not have any effect on anterior cranial length, but it does affect the angulation of the cranial base. According to our results, the appliance has demonstrated a flattening effect of the cranial base (p<0.05) in the treated sample. The functional regulator induces counterclockwise rotation rather than vertical or sagittal changes in the maxilla.
Asunto(s)
Maloclusión Clase II de Angle/terapia , Maxilar/crecimiento & desarrollo , Aparatos Ortodóncicos Funcionales , Base del Cráneo/crecimiento & desarrollo , Adolescente , Cefalometría , Niño , Femenino , Humanos , Masculino , Estudios RetrospectivosRESUMEN
La epidermólisis ampollosa hereditaria (EA) es una enfermedad moco-cutánea caracterizada por la aparición de ampollas y vesículas al mínimo roce. Una de las mucosas frecuentemente afectadas es la del tubo digestivo, y entre ellas la mucosa oral. Se conocen tres tipos de EA en función del nivel histológico de la lesión: EA simple, con ampollas intraepidérmicas que no dejan cicatrices; EA juntural, con ampollas entre las láminas lúcida y densa de la membrana basal, que curan con atrofias, y que presenta marcadas lesiones hipoplásicas en el esmalte dental; EA distrófica, con ampollas subepidérmicas sinequiantes, siendo la forma recesiva la que presenta mayores lesiones orales (microstomía, anquiloglosia, quistes de millium y caries rampantes). Se presentan tres casos de EA y la dificultad del manejo clínico-dental en ellos. Describimos las manifestaciones orales, los tratamientos dentales realizados y la evolución, en dos años, de los índices periodontales tras las medidas higiénico-preventivas y terapéuticas (AU)