1/10. Surgical exposure and orthodontic repositioning of an impacted mandibular premolar. This article is intended to give an overview of mandibular second premolar impactions and a detailed description of treatment. Practitioners who possess a basic knowledge of oral surgery technique and comprehensive corrective orthodontic capabilities could successfully treat such an entity. ( info) |
2/10. Asymmetric extraction treatment of an Angle Class II Division 2 subdivision left malocclusion with anterior and posterior crossbites. This case was chosen by the CDABO student case selection committee for publication in the AJO/DO. ( info) |
3/10. The not-so-harmless maxillary primary first molar extraction. BACKGROUND: Premature loss of primary molars has been associated with space loss and eruptive difficulties, especially when the loss occurs to the primary second molars and when it occurs early. This has not been thought to be the case for primary first molars. methods: The author revisited 13 cases from an earlier study on the effects of premature loss of maxillary primary molars. These longitudinal cases were scrutinized, using serial panoramic radiographs, to explain the irregular response in terms of dental migration. The author presents two case reports. RESULTS: In the earlier study, the author used digitized study casts and the concept of D E space--the space occupied by the primary first and second molars--to describe the dental migration that occurred after premature tooth loss. Using analysis of variance on data generated using an instrument capable of measuring in tenths of millimeters, the author produced findings regarding the amount of space loss, rate of space loss, effect of age at loss, amount of space regained at the time of replacement by the permanent tooth and effect on Angle's classification. Finally, the author created a simulation describing directional change; this revealed that the maxillary primary first molar loss resulted in a mesial displacement of the permanent canine during eruption. CONCLUSIONS: When the maxillary primary first molar is lost prematurely, the first premolar erupts in a more mesial direction than normal, as a result of the mesial incline of the primary second molar, and consumes the space of the permanent canine, which becomes blocked out. CLINICAL IMPLICATIONS: Rather than use a space maintainer after the premature loss of the maxillary primary first molar, the author suggests, clinicians can choose from a number of other options for preventing the first premolar from erupting too far in a mesial direction. ( info) |
4/10. The use of orthodontic treatment and immediate implant loading to restore the traumatic loss of a maxillary central incisor. This clinical case describes a new orthodontic/surgical concept for immediate loading of hydroxyapatite-coated cylindric implants, placed at the end of orthodontic treatment, to restore a traumatically lost maxillary central incisor. Further clinical and histologic studies are necessary to promote routine clinical application of this technique. ( info) |
5/10. Space-regaining treatment for a submerged primary molar: a case report. The aetiology of submerged primary molars is not known and optimal treatment has still not been established. If submerged primary teeth are left untreated, the occlusal consequences are space-loss due to tipping of adjacent teeth and/or overeruption of the opposing teeth. Normally, treatment consists of extraction of the deciduous teeth or observation for normal exfoliation. Here we report a case where the submerged primary molar was extracted surgically after space-loss had been regained. ( info) |
6/10. Mandibular pendex spring appliance for use in mixed dentition. Loss of space in the mandibular arch is a common occurrence due to several different causes such as caries, trauma or iatrogenic damage. This paper describes a new TMA spring used in mixed dentition for space regaining in the mandibular arch. A clinical report is presented and the advantages of the method are discussed. ( info) |
7/10. Occlusal disturbances resulting from neglected submerged primary molars. Several studies indicated that submerged teeth have no long-term effect on occlusal development. Individual cases, however, may present extreme complications. Lack of close supervision, in such instances, may lead to serious consequences. Two cases of negligence (one on the parents' part and the other a consequence of the dentist's carelessness) are presented. The need for a close follow-up of submerged teeth is emphasized, and a rigid periodical recall schedule is suggested. ( info) |
8/10. Treatment of a patient with a mutilated Class II, Division 1 malocclusion and a dolichofacial skeletal pattern. The purpose of this case report is to present a description of the diagnosis and treatment to ABO standards of a patient with a mutilated Angle's Class II, Division 1 malocclusion, complicated by anterior dental crowding, and a dolichofacial skeletal pattern. Treatment involved extraction of the maxillary first premolars, lingual arches to enhance anchorage, and J-hook headgear to retract the maxillary anterior segments. ( info) |
9/10. Nonsurgical rapid maxillary alveolar expansion in adults: a clinical evaluation. Palatal expansion in adults has traditionally been performed on a very limited basis. The expansion has been thought to be limited in scope and stability and to be associated with unacceptable complications. Instead, surgically assisted rapid maxillary expansion (SA-RME) has been advocated. Five adults with transverse arch deficiency are presented to illustrate the feasibility of nonsurgical expansion using the Haas appliance. Transmolar expansions of 3.9 to 7.5 mm, sufficient to correct the malocclusions, were achieved. Limiting the rate of appliance activation is thought to be important to avoid pain, swelling, and ulceration. Measurements of molar axial angulation, facial divergence, and clinical crown heights demonstrated modest molar tipping, stable mandibular divergence, and only minimal gingival recession. Radiographs revealed minimal observable root resorption of the maxillary molars and premolars. Contour tracings of the palate indicated that most of the correction of the maxillary transarch deficiency occurred at the level of the lateral walls of the palate (the alveolar process) rather than in the skeletal base of the maxilla. For this reason the technique is defined as rapid maxillary alveolar expansion (RMAE). RMAE is an acceptable alternative to SA-RME in adults for most cases of maxillary transarch deficiency. This article is followed by a commentary by Robert L. Vanarsdall Jr., and by an author's response. ( info) |
10/10. Case report: orthodontic treatment of dental problems in incontinentia pigmenti. incontinentia pigmenti is an uncommon genodermatosis that occurs in female infants. The characteristic dental defects are partial anodontia and the presence of some peg-shaped teeth. This report describes a patient with incontinentia pigmenti who exhibited multiple missing teeth in both arches. The patient had malpositioned teeth and decreased occlusal vertical dimension associated with the missing teeth. Orthodontic treatment was required for prosthetic purposes. The dental anomalies of incontinentia pigmenti and the treatment procedure are presented. ( info) |