1/21. open bite, dental alveolar protrusion, class I malocclusion: A successful treatment result.This case report describes the treatment of a dentoalveolar protrusion, Class I malocclusion with an anterior open bite. The 21-year-old woman presented with a significant anteroposterior and vertical skeletal discrepancy. Her face was convex with procumbent lips. Intraorally, she had an anterior open bite of 4 mm, mild crowding, and an overjet of 4.5 mm. First premolar extractions in conjunction with tongue therapy and high pull headgear were used to reduce protrusion and close anterior open bite. Modification of a tongue thrust habit allowed conventional orthodontic treatment to correct this significant malocclusion and provide stability over the last 4 years.- - - - - - - - - - ranking = 1keywords = alveolar (Clic here for more details about this article) |
2/21. Treatment of a Class I bimaxillary protrusive malocclusion with a high mandibular plane angle: An American Board of orthodontics case report.A case report of the orthodontic treatment of a male adolescent with a Class I bimaxillary protrusive malocclusion, complicated by a vertical growth pattern and high mandibular plane angle. Treatment consisted of extraction of maxillary second premolars, mandibular first premolars, use of a transpalatal bar, occipital pull headgear, and light wire mechanics. An acceptable result was achieved, with a decrease in the facial axis, decrease in lip strain, and an attractive full smile. This case report was presented to the American Board of orthodontics in partial fulfillment of the requirements for the certification process conducted by the Board.- - - - - - - - - - ranking = 0.0020548224276496keywords = process (Clic here for more details about this article) |
3/21. Rapid orthodontics with alveolar reshaping: two case reports of decrowding.Two case reports demonstrate a new orthodontic method that offers short treatment times and the ability to simultaneously reshape and increase the buccolingual thickness of the supporting alveolar bone. A 24-year-old man with a Class I severely crowded malocclusion and an overly constricted maxilla with concomitant posterior crossbites and a 17-year-old female with a Class I moderately to severely crowded malocclusion requested shortened orthodontic treatment times. This new surgery technique included buccal and lingual full-thickness flaps, selective partial decortication of the cortical plates, concomitant bone grafting/augmentation, and primary flap closure. Following the surgery, orthodontic adjustments were made approximately every 2 weeks. From bracketing to debracketing, both cases were completed in approximately 6 months and 2 weeks. Posttreatment evaluation of both patients revealed good results. At approximately 15 months following surgery in one patient, a full-thickness flap was again reflected. Visual examination revealed good maintenance of the height of the alveolar crest and an increased thickness in the buccal bone. The canine and premolars in this area were expanded buccally by more than 3 mm, and yet there had actually been an increase in the buccolingual thickness of the overlying buccal bone. Additionally, a preexisting bony fenestration buccal of the root of the first premolar was covered. Both of these findings lend credence to the incorporation of the bone augmentation procedure into the corticotomy surgery because this made it possible to complete the orthodontic treatment with a more intact periodontium. The rapid expansive tooth movements with no significant apical root resorption may be attributed to the osteoclastic or catabolic phase of the regional acceleratory phenomenon. Instead of bony "block" movement or resorption/apposition, the degree of demineralization/remineralization might be a more accurate explanation of what occurs in the alveolar bone during physiologic tooth movement in these patients.- - - - - - - - - - ranking = 1.4keywords = alveolar (Clic here for more details about this article) |
4/21. Temporary tongue thrust: failure during orthodontic treatment.This report presents the case of a 25-year-old male patient who sought orthodontic treatment. Oral examination revealed an Angle Class I relation, with a bimaxillary dento-alveolar protrusion, evidence of anterior crowding, and a large overbite and overjet. Radiographic examination revealed a skeletal Class I occlusion. During the distal movement of the canines, occlusal interferences between the canines occurred and the commencement of a tongue thrust was observed. After correction of the applied forces, the canine movement was completed and the habit was no longer detectable. The incident indicates that an unusual oral habit suspiciously occurring during treatment should lead to an immediate reconsideration of the orthodontic treatment strategy.- - - - - - - - - - ranking = 0.2keywords = alveolar (Clic here for more details about this article) |
5/21. Category 1: Interceptive or early treatment.This case report was part of a display of cases sponsored by the American Board of orthodontics after the board-certification process. The summary of treatment and records are reprinted here as they were submitted to the board.- - - - - - - - - - ranking = 0.0020548224276496keywords = process (Clic here for more details about this article) |
6/21. Treatment of a Class I malocclusion with severe bimaxillary protrusion.This report describes the treatment of a 20-year-old woman from nigeria who had severe bimaxillary dentolveolar protrusion. The main issue in determining the appropriate treatment plan was the severity of the dentoalveolar protrusion. Four first premolars were extracted to reduce lip procumbancy. The change in the patient's facial esthetics was dramatic. Significant retraction of the upper and lower lips was achieved, and lip eversion and dentoalveolar protrusion were significantly improved. As the lips were retracted, mentalis strain was reduced; this improved chin projection. This case report was presented at an AAO meeting as part of the ABO student case display. It was chosen by committee to be published in the AJO-DO.- - - - - - - - - - ranking = 0.4keywords = alveolar (Clic here for more details about this article) |
7/21. Differential diagnosis of skeletal open bite based on sagittal components of the face.AIMS: This study examined the morphology of skeletal open bite with respect to the sagittal components of the face. methods: The material consisted of cephalometric and hand-wrist films of 49 girls and 22 boys with skeletal open bite. The samples were grouped into Class I, II, and III facial types on the basis of ANB angle. In addition to conventional dentofacial variables, nasopharyngeal airway area was also measured on lateral headfilms. All measurements were examined by analysis of variance and Duncan test. Subsequently the factors leading to open bite were evaluated using multiple-regression analysis. RESULTS: Dentofacial morphology differed in the sagittal components of skeletal open bite, and the differences were most obvious between the Class II and Class III open bite groups. Posterior maxillary dentoalveolar height and mandibular incisor inclination were important factors in the development of open bite in the skeletal Class I and Class II open bite groups, while in the skeletal Class III open bite group, the nasopharyngeal airway and the gonial angle were involved. CONCLUSION: Sagittal components of skeletal open bite should be considered in the differential diagnosis and treatment planning of such cases.- - - - - - - - - - ranking = 0.2keywords = alveolar (Clic here for more details about this article) |
8/21. Microscrew implant anchorage sliding mechanics.AIM: To show the effectiveness of sliding mechanics used with microscrew implants in managing a dentoalveolar protrusion. There are several advantages, including reduced treatment time, simplified treatment mechanics, early profile changes, and elimination of interarch mechanics. MATERIAL AND methods: A step-by-step procedure for microscrew implant anchorage sliding mechanics is shown, with records of treated patients, which demonstrate the aforementioned advantages of this technique. The associated biomechanics and theoretical explanation follow. RESULTS: The authors show how the microscrew implant can provide anchorage for en masse retraction of six anterior teeth and the efficiency and ease of the mechanics in managing a dentoalveolar protrusion. CONCLUSION: The microscrew implant offers orthodontic clinicians a minimally intrusive method of intra-arch anchorage that can retract the anterior teeth without the anchorage loss that is expected in conventional techniques. Sliding mechanics used with microscrew implants is shown to be simple and efficient.- - - - - - - - - - ranking = 0.4keywords = alveolar (Clic here for more details about this article) |
9/21. A new protocol of Tweed-Merrifield directional force technology with microimplant anchorage.Tweed-Merrifield directional force technology with microimplant anchorage is a useful treatment approach for a patient with a Class I or Class II dentoalveolar-protrusion malocclusion. It can create a favorable counterclockwise skeletal change and a balanced face without patient compliance. In contrast, headgear force with high-pull J-hook can obtain similar results but depends on patient cooperation. This case report presents the treatment of a patient with Class I canine and molar relationships, a convex profile with retrognathic mandible and marked lip protrusion, and excessive lower anterior facial height. Good facial balance was obtained by Tweed-Merrifield directional force technology with microimplant anchorage, which provided horizontal and vertical anchorage control in the maxillary and mandibular posterior teeth, and intrusion and torque control in the maxillary anterior teeth, resulting in a favorable counterclockwise mandibular response.- - - - - - - - - - ranking = 0.2keywords = alveolar (Clic here for more details about this article) |
10/21. An adult bimaxillary protrusion treated with corticotomy-facilitated orthodontics and titanium miniplates.We performed an orthodontic treatment combined with corticotomy and the placement of titanium miniplates in an adult patient who desired a shortened treatment period. The patient had an Angle Class I malocclusion with flaring of the maxillary and mandibular incisors. First, titanium miniplates were placed into the buccal alveolar bone of the maxilla for absolute orthodontic anchorage. Second, an edgewise appliance was applied to the maxillary and mandibular teeth. Then, the maxillary first premolars and mandibular second premolars were extracted. At the same time, a corticotomy was performed on the cortical bone of the lingual and buccal sides in the maxillary anterior as well as the mandibular anterior and posterior regions. Leveling was initiated immediately after the corticotomy. The extraction spaces were closed with conventional orthodontic force (approximately 1 N per side). The edgewise appliance was adjusted once every 2 weeks. The total treatment time was 1 year. Cephalometric superimpositions showed no anchorage loss, and panoramic radiographs showed neither significant reduction in the crest bone height nor marked apical root resorption. A corticotomy-facilitated orthodontic treatment with titanium miniplates might shorten an orthodontic treatment period without any anchorage loss or adverse effects.- - - - - - - - - - ranking = 0.2keywords = alveolar (Clic here for more details about this article) |
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