Treatment of skeletal 2 malocclusions with temporary anchorage devices and elastics.

Treatment of skeletal 2 malocclusion in growing patients (assessed to be in cervical stage 3-4 of skeletal development from a lateral cephalograph x-ray) using an appliance joined to temporary anchorage devices and using class II elastics.

Status

Not yet recruiting

Phases

Unknown

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12610000205033

Enrollment

Registered

2010-03-10

Start date

2010-06-01

Completion date

Unknown

Last updated

2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This study will investigate the results of a new functional appliance which aims to correct skeletal 2 malocclusions. Currently, controversy exists on the efficacy of functional appliances at stimulating mandibular growth. This is because the tooth movements rather than changes in facial growth have found to be mostly responsible for the improvement seen in the dental arch relationships. This appliance will be attached to orthodontic miniscrew temporary anchorage devices aimed at achieving maximal skeletal correction of their malocclusion and minimising dentoalveolar effects.

Interventions

2 orthodontic miniscrews are to be placed in the palate of the upper jaw which is joined to an expansion appliance cemented to the patient's upper posterior teeth. 4 orthodontic miniscrews - 2 on each side joined by a plate - will be placed in the lower jaw. The patient will be required to wear class II elastics from the upper appliance to the lower joined miniscrews. This procedure is expected to take approximately 1 hour. The miniscrews and expansion appliance will be placed at the start of treatment and is expected to stay in the mouth for approximately 9 months. Miniscrews will only be replaced if they fail. Current research literature states a 80-85% success rate for orthodontic miniscrews. At the end of 9 months of treatment, all miniscrews and the expansion appliance will be removed from the patient

Study design

Allocation

Non-randomised trial

Intervention model

Single group

Primary purpose

Treatment

Masking

Open (masking not used)

Eligibility

Sex/Gender

All

Age

5 Years to 20 Years

Healthy volunteers

Yes

Inclusion criteria

1.Cervical stage 3-4 skeletal developement (Baccetti et al 1995) 2.Have a Class II dental and skeletal relationship with mandibular deficiency 3.Permanent dentition 4.No previous orthodontic treatment, trauma and no dental or congenital anomalies 5.Good oral hygiene and no periodontal disease.

Exclusion criteria

1. Medically compromised patients. 2. patients with a history of poor compliance and will not wear elastics 3. Patients with active dental or gum disease 4. Patients with poor oral hygiene 5. Patients that do not wish to volunteer for the study

Outcome results