1/4. Menkes disease: report of two cases.Menkes disease is a rare, autosomal recessive disorder characterized by neuronal degeneration, abnormal hair, malformed connective tissue, mental retardation, and a life span of three years. Previously reported dental findings include a high arched palate, delayed eruption of secondary dentition, and open bite. The case of twin seven-year-old males with Menkes disease is presented, along with previously unreported dental findings of spindle-shaped root resorption patterns on the primary maxillary central and lateral incisors.- - - - - - - - - - ranking = 1keywords = root resorption, resorption, root (Clic here for more details about this article) |
2/4. Interdisciplinary treatment including forced extrusion and reintrusion of a traumatized mandibular incisor for a patient with Class II Division 1 skeletal open bite.A woman with Class II Division 1 long-face syndrome characteristics had a history of facial trauma, dentoalveolar fracture of her mandibular anterior teeth, and temporomandibular joint pain. The pretreatment apical radiograph showed a large area of external root resorption of the mesial surface of the mandibular left central incisor. To arrest the external root resorption, the mandibular left central incisor was extruded. During extrusion, sequential apical radiographs were taken. As the tooth moved away from the site of osteoclastic activity, resorption ceased, and repair took place on the root surface. At this time, the mandibular left central incisor was intruded, the mesial defect self-repaired, the tooth remained vital, and the periodontial ligament was intact. The biologic bases for this cessation of resorption and the repair of the tooth's surface are presented.- - - - - - - - - - ranking = 2.4822955862069keywords = root resorption, resorption, root (Clic here for more details about this article) |
3/4. Two- and three-dimensional orthodontic imaging using limited cone beam-computed tomography.Considerable progress has been made in diagnostic, medical imaging devices such as computed tomography (CT). However, these devices are not used routinely in dentistry and orthodontics because of high cost, large space requirements and the high amount of radiation involved. A device using computed tomography technology has been developed for dental use called a limited cone beam dental compact-CT (3DX). The aim of this article is to demonstrate the usefulness of 3DX imaging for orthodontic diagnosis and treatment planning. We present three cases: (1) one case shows delayed eruption of the upper left second premolar, (2) the second case shows severe impaction of a maxillary second bicuspid; and (3) the third case shows temporomandibular joint disorder (TMD). In the tooth impaction cases, the CT images provided more precise information than conventional radiographic images such as improved observation of the long axis of the tooth, root condition, and overlap with bone. In the TMD case, clear and detailed temporomandibular joint images were observed and pre- and posttreatment condylar positions were easily compared. We conclude that 3DX images provide useful information for orthodontic diagnosis and treatment planning.- - - - - - - - - - ranking = 0.0023455008721044keywords = root (Clic here for more details about this article) |
4/4. retreatment of a patient who presented with condylar resorption.This case report describes the retreatment of a patient whose initial nonextraction treatment several years earlier had been unsuccessful. When she sought new treatment, she had an open bite, proclined incisors, and severe temporomandibular joint derangement with almost complete resorption of the condyles. The new treatment, which included extractions and surgery, gave her balanced and harmonious facial proportions, a Class I occlusion with normal overjet and overbite, and a healthy dentition. There was no further loss of condylar tissue and the temporomandibular joints were asymptomatic.- - - - - - - - - - ranking = 1.1998752133371keywords = resorption (Clic here for more details about this article) |