Retenciones múltiples. Reporte de un caso / Multiple retention. Case report

RESUMEN La retención dentaria es común encontrarla en la clínica de ortodoncia, los caninos maxilares son los de mayor solicitud de tratamiento por su importancia estética. Sin embargo, no es frecuente la retención de dientes temporales. Su etiología no está bien definida pero se considera de carácter multifactorial. Se presentó una paciente del sexo femenino de 12 años y medio de edad, con ausencia de 15 y 13, presencia de 53 y mesogresión del 16. Al examen radiográfico se observó retención de 55, 15 y 13, este último en transposición incompleta con el 12. Después de un profundo análisis se decidió exéresis del 55 y alineación al arco dentario de 15 y 13, mediante colocación de un dispositivo, con el empleo del sistema de cementado directo en el acto quirúrgico. Se estableció una oclusión funcional y estética aceptable, con particular cuidado de la integridad de los dientes vecinos y sus tejidos blandos. Las retenciones constituyen maloclusiones dentarias complejas y de difícil pronóstico y tratamiento, más aún cuando son múltiples. Se requiere de estudio y tratamiento multidisciplinario (AU).

ABSTRACT It is common to find teeth retention in Orthodontics clinic; maxillary canines, due to their esthetical importance, are the ones the patients ask to be treated more frequently. Nevertheless, temporary teeth retention is not frequent. Its etiology is not clear, but it is considered multifactorial. The authors present the case of a female patient, aged 12 years and a half, without 15 and 13 teeth, presence of 53 and mesogression of 16. At the radiographic examination, the retention of 55, 15 and 13 was found, and also the incomplete transposition of 13 and 12. After deeply analyzing the case, the orthodontists decided the removal of 55 and aligning 15 and 13 to dental arch, placing a device with the system of direct cementing at the moment of the surgery. It was established a functional occlusion and an acceptable esthetics, particularly caring for the neighboring teeth and their soft tissues. Retentions are complex dental malocclusions, of difficult prognosis and treatment, mainly when they are multiple. They require study and multidisciplinary treatment (AU).

Dens invaginatus of right maxillary second molar: A case report and literature review / 吉林大学学报(医学版)

Objective: To explore the process of diagnosis and treatment of the patients with dens invaginatus of right maxillary second molar, to analyze the clinical features, the radiographic features and the pathological features of the dens invaginatus, and to make a reasonable treatment plan. Methods: The clinical data, imaging findings and pathological data of a patient with dens invagination were collected. The clinical diagnostic criteria and treatment methods of these cases were summarized with relevant literature review. Results: The patient, female, 28 years old, was diagnosed with a hole in the upper right posterior teeth for 6 months. The special examination results showed that the 17-toothed face was flat, the crown was huge, and the occlusal surface was seen in the sag and sputum; the medullary cavity was not reached. The radiograghic examination results showed that the enamel density image of the 17-toothed surface was sunken to the root, with a depth of about 7. 7 mm, diagnosed as dens invaginatus. At the time of initial treatment, the humus was removed and the sag received sedative treatment. The spontaneous pain still existed during the follow-up examination, and the problem of food embolism was not solved. Considering the poor recovery after treatment, the patient agreed to remove the tooth. The isolated tooth was observed by pathological grinding, and the enamel and dentin structures of the invaginatus were abnormal observed under microscope. Conclusion: The patients with dens invagination occurs in the molar area are rare; the type of disease and treatment plan should be determined by imaging examination during the process of diagnosis and treatment; it suggests that the patients with poor recovery after treatment should remove the teeth.