1/143. Assessment, documentation, and treatment of a developing facial asymmetry following early childhood injury.Prepubertal trauma is often implicated as the cause of asymmetric growth of the mandible. A series of photographs taken before and after early childhood injury to the orofacial complex illustrates the development of a three-dimensional dentofacial deformity in a patient. The diagnosis and combined surgical orthodontic treatment plan to correct the facial asymmetry and malocclusion are discussed.- - - - - - - - - - ranking = 1keywords = mandible (Clic here for more details about this article) |
2/143. Dental and craniofacial features of Aarskog syndrome: report of a case and review of literature.Aarskog syndrome is a rare syndrome with a typical triad of facial, digital and genital characteristics. The characteristic cephalometric finding in this patient was the unusually large upward slant of SN plane and a steep Ba-N plane. Though the patient presented with a class I skeletal pattern, both the maxilla and mandible were hypoplastic and retruded with respect to the cranial base. Other characteristic features regarding the mandibular morphology were a large FMA (37 degrees) and Sn-GoGn (44 degrees) angles, a large gonial angle (138 degrees), an increase in total anterior facial and lower anterior facial height.- - - - - - - - - - ranking = 1keywords = mandible (Clic here for more details about this article) |
3/143. Surgical cephalometric prediction tracing for the alteration of the occlusal plane by means of rotation of the maxillomandibular complex.The surgical cephalometric prediction tracing involving the alteration of the occlusal plane differs from the conventional surgical prediction tracing. When conventional surgical prediction is developed, the final occlusal plane is dictated by the occlusal plane of the mandible, with or without autorotation. The mandible (and therefore the mandibular occlusal plane) will rotate around a point at or just posterior to the condyle. This principle is not adhered to in treatment planning requiring rotation of the maxillomandibular complex and consequent alteration of the occlusal plane. The aim of this paper is to present a method for developing a surgical cephalometric prediction tracing involving rotation of the maxillomandibular complex.- - - - - - - - - - ranking = 2keywords = mandible (Clic here for more details about this article) |
4/143. Accuracy of integration of dental casts in three-dimensional models.PURPOSE: This study investigated errors occurring in three-dimensional (3D) models when plaster dental casts are integrated into them. MATERIALS AND methods: Three-dimensional milling models of three patients with a jaw deformity were fabricated using the Endoplan system (SPARC International Inc, Santa Clara, CA). After this, plaster dental casts were integrated into the 3D models using a face-bow transfer system. Two cephalograms were then compared, one obtained from the patient and the other obtained from the 3D model painted with contrast medium. RESULTS: In two cases, the reproducibility of the dental position as determined by angle analysis was within 2 degrees, and that determined by distance analysis was within 2 mm. However, errors over 4 degrees and 4.2 mm, respectively, were observed in one case. CONCLUSION: It is clinically important to confirm the accuracy of the 3D model by cephalometric analysis, and it may be necessary to reposition the dental model based on the results.- - - - - - - - - - ranking = 0.11123527146695keywords = jaw (Clic here for more details about this article) |
5/143. Distraction osteogenesis in silver Russell syndrome to expand the mandible.Distraction osteogenesis is a method commonly used to activate bone regeneration in nonunions and osseous defects and for lengthening procedures of tubular bones. This technique involves the sectioning of a bone and the subsequent deliberate, controlled movement of the opposing sectioned edges to lengthen, widen, or reposition a bone, or all three. In this report, a patient with silver Russell syndrome and severe mandibular hypoplasia was treated by means of distraction osteogenesis of the midsymphysis to widen the mandible in concert with sagittal-ramus osteotomies to lengthen the mandible. This treatment created significantly increased arch length in the mandible, which was necessary to facilitate the patient's orthodontic treatment. We believe this is the first reported case of distraction osteogenesis to widen the mandible with the use of a tooth-borne appliance.- - - - - - - - - - ranking = 8keywords = mandible (Clic here for more details about this article) |
6/143. Elastic activator for treatment of open bite.This article presents a modified activator for treatment of open bite cases. The intermaxillary acrylic of the lateral occlusal zones is replaced by elastic rubber tubes. By stimulating orthopaedic gymnastics (chewing gum effect), the elastic activator intrudes upper and lower posterior teeth. A noticeable counterclockwise rotation of the mandible was accomplished by a decrease of the gonial angle. Besides the simple fabrication of the device and uncomplicated replacement of the elastic rubber tubes, treatment can be started even in mixed dentition when affixing plates may be difficult.- - - - - - - - - - ranking = 1keywords = mandible (Clic here for more details about this article) |
7/143. Clinical treatment with the Begg appliance.In a series of three articles, clinical treatment with the Begg appliance has been discussed. In the March, 1973 article, the standard procedures in the three stages commonly used in the Begg method were illustrated in a series of eight cases showing the wide range of orthodontic treatment possibilities of this method. The February, 1974 article contained a case report that illustrated some of the problems connected with orthodontic observation, diagnosis, Begg treatment, and retention. In this third article, due attention has been given to common problems of the chairside worker as encountered in daily practice. Certain comments have been offered, particularly with regard to child dental care and orthodontic guidance procedures of the growing child. A treatment approach, based on an individual optimum for each patient is discussed, following the course of treatment of three cases (Figs. 1, 2, and 4) with unfavorable jaw patterns and dental problems. These are compared with others having better anatomic proportions (Figs. 3 and 5). In the last case (Fig. 5) diagnosis and treatment planning are once again reviewed. The essential decision to be made for each orthodontic treatment, namely, whether and which teeth must be removed, is discussed and illustrated. In all cases, attention has been given to the portrayal of methods and technical details through the three stages of Begg treatment.- - - - - - - - - - ranking = 0.11123527146695keywords = jaw (Clic here for more details about this article) |
8/143. Open-bite relapse. Report of a case.Although the tooth positioner was initially helpful in promoting improved esthetics and stability, it in effect became an orthodontic appliance by maintaining the original, treated occlusal plane. Subsequently, the lower third molars erupted above the occlusal plane and caused the mandible to rotate downward and backward, resulting in an unsightly bite opening. Removal of the etiologic factors, the tooth positioner, and third molars corrected the open-bite relapse.- - - - - - - - - - ranking = 1keywords = mandible (Clic here for more details about this article) |
9/143. Cystic lymphangioma: its orofacial manifestations.A patient age five years, nine months with cystic lymphangioma was studied to determine the causes of malocclusion and the optimum time for its treatment. The main findings were unilateral anterior and posterior crossbite and displacement of the mandibular midline due to maxillary deformity and mandibular rotation. The force of the cystic lymphangioma mass caused deformity of the maxilla and rotation of the mandible. The patient had no functional impairment of speech or mastication. A decision was made to defer treatment of malocclusion until complete surgical excision of the cystic lymphangioma can be undertaken, thereby minimizing the chance of malocclusion re-occurrence.- - - - - - - - - - ranking = 1keywords = mandible (Clic here for more details about this article) |
10/143. Vertical control: a multifactorial problem and its clinical implications.In this article we have tried to analyze the importance of vertical control in orthodontic cases, as well as the factors affecting it. From the cases presented, it can be assumed that: 1. In vertically growing or nongrowing persons (high-angle cases), the application of proper directional forces becomes extremely critical because a clockwise rotation of the mandible can occur very promptly and is very undesirable. 2. In cases with favorable growth potential, the results may be acceptable, even if the forces applied during treatment are not absolutely controlled; in other words, Mother nature may often compensate for inappropriate or miscalculated treatment procedures.- - - - - - - - - - ranking = 1keywords = mandible (Clic here for more details about this article) |
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