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At least 1,081 records · Page 60Linked to original sources
PubMed2005

Orthopedic approach in the treatment of a skeletal class II division 1 malocclusion with an anterior open bite.

The patient presented with a skeletal class II malocclusion characterized by an anterior open bite and maxillary midline deviation. This mixed dentition case was treated orthopedically with MRI appliance to rotate and impact the maxilla. A Bionator was used advance the mandible. The case was completed using Occlus-O-Guide. The result showed that the facial bones and teeth appear in the correct position.

Activator Appliances↗
PubMed1994

Correction of mandibular dentoalveolar retrusion by segmental mandibular surgery.

Mandibular dentoalveolar retrusion is a common problem that often can be related to missing or extracted teeth in the mandibular arch. The correction of this type of malformation through surgical mandibular advancement to eliminate the large overjet significantly increases the chin prominence, resulting in a poor facial appearance. With the use of a combined orthodontic and surgical treatment that includes segmental osteotomies of the anterior part of the mandible, this negative effect can be avoided and arch length can be restored. This procedure was carried out in three patients aged 26 to 33 years. The bony spaces created distal to the anterior segment were filled with iliac bone grafts. At the end of the orthodontic treatment, the missing premolars were replaced with conventional fixed dentures, bonded prostheses, or implants.

Adult↗
PubMed2000

Evaluation of treatment and posttreatment changes of protraction facemask treatment using the PAR index.

The purpose of this study was to use the Peer Assesment Rating (PAR) index score to evaluate the treatment and posttreatment changes of Class III patients treated by protraction facemask. The sample consisted of 20 Chinese children, 6 to 11 years old, with Class III skeletal malocclusion who had been treated with maxillary expansion and a protraction facemask. The average treatment time was 8.2 months, followed by 1 year of retention with a Class III functional appliance. Study casts were taken pretreatment (T1), posttreatment (T2), 1 year follow-up (T3), and 2 years follow-up (T4). After treatment, PAR scores were calculated for each time period. Differences among the 4 time periods were analyzed with the Wilcoxin matched-pairs test. Significant reductions in PAR scores were found at T2 (56%), T3 (70%), and T4 (63%) compared with T1. Immediately posttreatment (T2), 17 (85%) of 20 patients had improved PAR scores by a reduction of at least 30%. Reductions were caused primarily by correction of the anterior crossbite. One year after treatment (T3), further reductions in PAR score were noted (P <.01) as a result of better alignment of the anterior segment, improvement of the buccal occlusion, and overbite and midline corrections. Two years after treatment (T4), PAR scores were higher than at the previous time period. The increases were due to relapses in overjet (4 of 20 patients), overbite, and centerline corrections. These results indicate that significant reductions in the severity of Class III malocclusion can be achieved with early orthopedic facemask treatment. In most cases, further improvement in the PAR score can be expected 1 and 2 years after treatment. In a few patients, the benefits of early treatment are negated by relapses in overjet, overbite, and centerline corrections during the follow-up period.

Child↗
PubMed2001

The modified twin block appliance in the treatment of Class II division 2 malocclusions.

Two case reports illustrate the effective treatment of Class II division 2 malocclusion with modifications to the Twin Block appliance. This approach may reduce the total treatment time and reduce the need for extra-oral anchorage. In each of the cases presented treatment has been carried out on a non-extraction basis with full correction of the malocclusion.

Adolescent↗
PubMed1990

Treatment of Class II, division 1, cases with a maxillary traction splint.

Class II, division 1 cases are treated by many different techniques depending on the age of the patient and cause of the malocclusion. To overcome the undesirable effects of headgear on anchor teeth, a removable appliance, the maxillary traction splint, is used with extraoral forces. In this study, 15 patients with maxillary dentoalveolar protrusions and Class II, division 1, malocclusions were treated with a maxillary traction splint. Cephalograms taken before and after treatment and the sagittal skeletal and dental changes were evaluated and quantified. The results showed that use of the maxillary traction splint prior to fixed appliance therapy is effective in correcting dentoalveolar protrusion in growing patients.

Cephalometry↗