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At least 37 records · Page 2Linked to original sources
PubMed1995

[Evaluation of presurgical orthodontic correction of the mandibular prognathism].

The aim of this study was to evaluate the effects of presurgical orthodontic correction of the mandibular prognathism. The sample consisted of two groups of surgical cases. The cases of the mandibular prognathism in group I with lower anterior dental compensation received presurgical orthodontic decompensation, and the cases in group II without lower anterior dental compensation did not receive presurgical orthodontic decompensation. The results showed that before presurgical orthodontic treatment, significantly differences existed between the two groups variable ILi/OL and ANB. After presurgical orthodontic correction lower incisors position in group I was very close to that in the group II, this means that the presurgical orthodontic treatment significantly changed the position of the lower incisors.

Adolescent↗
PubMed1996

Profile changes following orthodontic correction of bimaxillary protrusion with a preadjusted edgewise appliance.

This study aimed to determine the changes in soft tissue and skeletal profiles following orthodontic correction of bimaxillary protrusion in 50 Chinese adult patients. Treatment involved extractions of four premolars and use of the preadjusted edgewise appliance. The average treatment time was 2.2 years. Cephalometric analysis was carried out on pretreatment and posttreatment cephalograms. The result of treatment was a more harmonious soft tissue profile; with a less acute nasolabial angle (following a 10.55-degree change), 2.75- and 2.09-mm reductions in upper and lower lip protrusions, respectively, and a 3.41-mm decrease in interlabial gap. Effects on dental relationships included a 0.90-mm reduction in incisal show, a reduction of overbite, and an improvement in the inclination of maxillary and mandibular incisors. Therefore, orthodontic correction of bimaxillary protrusion achieved favorable soft tissue changes without causing undesirable effects on the underlying hard tissues.

Adolescent↗
PubMed2005

Bimaxillary dentoalveolar protrusion: traits and orthodontic correction.

A group of 48 ethnically diverse patients with bimaxillary protrusion was used to study the pretreatment cephalometric traits of this malocclusion and the effect of orthodontic correction. All patients were treated with four premolar extractions and retraction of the anterior teeth. Pre- and posttreatment lateral cephalograms were evaluated using a series of 18 linear and angular measurements, and the effect of orthodontic correction was determined using paired t-tests. Cephalometric standards were developed for bimaxillary protrusions, which clarify the overall presentation of this malocclusion for clinicians. Patients with bimaxillary protrusion demonstrated increased incisor proclination and protrusion, a vertical facial pattern, increased procumbency of the lips, a decreased nasolabial angle, and thin and elongated upper and lower anterior alveoli. This study also showed that the extraction of four premolars can be extremely successful in reducing the dental and soft tissue procumbency seen in patients with bimaxillary protrusion, thus providing a stronger evidence-based rationale for this treatment modality.

Adolescent↗
PubMedDate not supplied

Orthodontic correction of maxillary flaring using provisional restorations.

An unconventional orthodontic correction can be accomplished by using preexisting provisional restorations, which can be modified for use in active tooth movement or splinted together for orthodontic anchorage. This technique has an advantage over conventional fixed appliance orthodontic therapy because it can accomplish tooth movement concurrently with restorative and periodontal therapy. Consequently, the timing or sequencing of periodontal and restorative treatment is optimal, and the overall treatment is more efficient. The learning objective of this article is to describe the minor tooth movement necessary to achieve the optimum occlusal scheme, crown form, and tooth position for the forces of occlusion to be displaced down the long axis of the periodontally compromised teeth. Once the occlusion, periodontal health, and crown contours for the provisional splinted restoration are acceptable, the final splinted restoration can be similarly fabricated, and it becomes an excellent orthodontic retainer.

Acrylic Resins↗
PubMed1995

The use of implants for orthodontic correction of an open bite.

This case illustrates the integration of maxillofacial surgery, orthodontics, prosthodontics and periodontics in the treatment of an adult male. A traumatic injury to the lower jaw was the stimulus for the patient to seek orthodontic correction of a severe malocclusion including crossbites and an anterior open bite. The loss of a large portion of the anterior alveolar process of the lower jaw including six teeth was corrected with an implant bearing prosthesis which was subsequently used as anchorage to correct the malocclusion. Through the combined efforts of the above disciplines, properly orchestrated, this patient was treated in an effective and successful manner.

Adult↗
PubMed1999

Orthodontic correction of a class III malocclusion in an adolescent patient with a bonded RPE and protraction face mask.

A case report of a 14-year-old Hispanic male with a Class-III skeletal profile and dental malocclusion with a long mandibular body and ramus and retrusive maxilla. The patient was initially referred for a surgical evaluation for a LeFort I maxillary advancement, but he wanted to avoid surgery. The Class-III malocclusion was corrected with a bonded rapid palatal expander and a maxillary protraction mask followed by nonextraction orthodontic treatment. A Class-I molar and canine relationship was achieved, and the facial profile improved. This case report demonstrates the orthodontic correction of a Class-III malocclusion in an adolescent patient with a bonded rapid palatal expander and protraction face mask. This case was presented to American Board of Orthodontics as partial fulfillment of the requirements for the certification process conducted by the Board.

Adolescent↗
PubMed1981

Evaluation by patients of surgical orthodontic correction of skeletal Class III malocclusion: survey of 41 patients.

To assess whether surgical procedures have fulfilled patients' expectations, questionnaires were sent to 41 patients who had undergone surgical-orthodontic correction of skeletal Class III malocclusions. Ninety per cent of the patients answered that they were satisfied with the results in regard to their chief problems and 85% had improved masticatory function. A favorable change in appearance was recognized by 24 patients, whereas 15 patients noticed no major changes, and two were displeased with the changes. Patients' expectations were not always satisfied despite evident improvement by objective standards. Factors affecting their satisfaction with the results of the surgery are discussed.

Adolescent↗
PubMed2004

Surgical orthodontic correction of acromegaly with mandibular prognathism.

A male (30 years five months) who complained of mandibular prominence and masticatory dysfunction was diagnosed as a mandibular prognathic with acromegaly after cephalometric and endocrine examinations. The level of growth hormone (GH) subsequent to a transsphenoidal hypophysectomy had been controlled by medicines for about five years. Surgical orthodontic correction improved his occlusion and profile, but magnetic resonance imaging detected a recurrent adenoma in the cranial base during the retention period. The recurrence resulted in slight prognathic changes of the patient with a high level of GH. This is a case report of the treatment of an acromegalic patient discussing growth considerations that could influence the orthodontic treatment plan and long-term stability.

Acromegaly↗
PubMed1979

Surgical-orthodontic correction of horizontal maxillary deficiency.

Selected maxillary osteotomies in concert with rapid maxillary expansion appliances are dependable adjuncts to treatment of the various clinical manifestations of horizontal maxillary deficiency and the accompanying crossbite. The important diagnostic, treatment planning, and technical considerations necessary for successful surgical-orthodontic correction of horizontal maxillary deficiency were discussed.

Adult↗
PubMed1997

Changes in jaw movement and jaw closing muscle activity after orthodontic correction of incisor crossbite.

The possible influences of the direction of occlusal loading delivered to the incisors in the sagittal direction during chewing on jaw movement and jaw closing muscle activity were investigated. Ten healthy children with crossbite of one or two incisors on the right side were selected. Each subject chewed a piece of chewing gum on the right side, and jaw displacements and electromyographic signals from the posterior temporalis and superficial masseter muscles on the ipsilateral side were sampled simultaneously. After orthodontic correction of the incisor crossbite relationship, identical records were taken. The inclinations of the gliding contacts for each posterior tooth in the lateral jaw excursion position were consistent before and after the treatment. The posttreatment records showed broader jaw movement patterns in the frontal view and faster jaw movement velocity in the lateral direction at a level close to the habitual maximum intercuspation position, when compared with the pretreatment records (P < 0.05). The duration of the muscle activity and the incidence of the silent periods of the masseter muscle during chewing significantly decreased after the treatment (P < 0.05). The current results give a neurophysiologic rationale for explaining the significance of orthodontic treatment in improving lowered masticatory efficiency in the way that the change in direction of the occlusal load achieved by tooth movement influences on the periodontal sensory input, which, in turn, modifies the trigeminal motor output and thus, eventually, jaw muscle activities.

Bite Force↗
PubMed2001

[Orthodontic correction of a complex malocclusion of the canine teeth of dento-alveolar and skeletal origin using a model cast device in the upper jaw of the dog].

Malocclusion of the canines, which in dogs is frequent and often has a congenital pattern, remains a challenge to treat. Steeply positioned lower jaw canines are corrected by means of a specifically designed orthodontic intervention. The case at hand was characterized by a combination of a slight skeletal distal bite and compensatory distal tilt of the entire premaxilla (retrusion, caudal tilt) with a mesial tilt of the canines in the upper jaw (rostral and anterior tilt). An individual solution was found which resulted in a functional adjustment of both upper and lower jaws. A model cast device which included both appropriately tilted areas and screws to ensure distal adjustment solved the problem.

Animals↗
PubMed1993

The effects of surgical-orthodontic correction of skeletal class III malocclusion on mandibular movement.

The effects of surgical-orthodontic treatment on mandibular movement were studied using the mandibular kinesiograph in 30 patients with skeletal class III malocclusion that was corrected by the sagittal split osteotomy (27 patients), a combination of the sagittal split osteotomy and body ostectomy (2 patients), or the sagittal split osteotomy and a posterior alveolar osteotomy of the maxilla (1 patient). Postoperatively, the mean maximum anterior and posterior excursions of the mandible increased significantly from 4.1 to 6.7 mm and from 0.6 to 2.6 mm, respectively. The lateral excursion to the right and left sides also showed significant increases from 4.8 to 7 mm and from 5.5 to 7 mm, respectively, after surgery. In analysis of the habitual and rapid opening and closing movements of the mandible, marked impairment was not observed in most patients except for crossing and discrepancy in the tracings of the habitual opening and closing movements in the sagittal plane observed in 11 patients. These findings were observed in only one patient postoperatively. The results indicate that the surgical orthodontic correction of skeletal class III malocclusion has favorable effects on the function of the mandible.

Adolescent↗