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Chesterfield Micro-implant Study Involving Three Types of Anchorage Methods in Orthodontics

2014-07-23 21:12:27 | BioPortfolio

Summary

Research problem:

Anchorage reinforcement is effective with headgear provided patient compliance is optimal. Nance palatal arch have also been shown to be effective. Microscrews despite their popularity however have no scientific evidence to support their use.

Aim:

To compare the effectiveness of 3 methods of anchorage reinforcement 1) headgear 2) Nance palatal arch 3) orthodontic micro-screws.

Hypothesis:

There is no difference in the amount of anchorage loss between the three methods of anchorage reinforcement.

Design:

Randomized clinical trial.

Setting: District General Hospital orthodontic department

Participants: 75 patients requiring "absolute anchorage".

Interventions: The subjects will be randomized into 3 groups. In group 1 headgear will be requested 12-14 hours per day. In group 2 a nance palatal arch will be placed for use as intra oral anchorage reinforcement. In group 3, orthodontic micro-screws will be used for anchorage.

Method of investigation:

The study will be of 75 'absolute anchorage' patients older than 12 years randomly assigned to one of three groups of anchorage reinforcement

Outcome measures:

1. Anchorage loss measured from lateral Cephalometric radiographs and 3-D model scanning, records will be taken at three points

2. Patient perception of the different treatment methods, including surgical experience

Data analysis: The data will be analysed on an intention to treat basis. Basic descriptive statistics and uni-variate tests will initially be done to explore the data. Final data analysis will involve the relevant multi-variate statistical modeling.

Dissemination: Conference proceedings, journal papers and the Cochrane oral health group.

Description

Research problem:

Anchorage reinforcement is effective with headgear provided patient compliance is optimal. Nance palatal arch have also been shown to be effective. Microscrews despite their popularity however have no scientific evidence to support their use.

Aim:

To compare the effectiveness of 3 methods of anchorage reinforcement 1) headgear 2) Nance palatal arch 3) orthodontic micro-screws.

Hypothesis:

There is no difference in the amount of anchorage loss between the three methods of anchorage reinforcement.

Design:

Randomized clinical trial.

Setting: District General Hospital orthodontic department

Participants: 75 patients requiring "absolute anchorage".

Interventions: The subjects will be randomized into 3 groups. In group 1 headgear will be requested 12-14 hours per day. In group 2 a nance palatal arch will be placed for use as intra oral anchorage reinforcement. In group 3, orthodontic micro-screws will be used for anchorage.

Method of investigation:

The study will be of 75 'absolute anchorage' patients older than 12 years randomly assigned to one of three groups of anchorage reinforcement

Data analysis: The data will be analysed on an intention to treat basis. Basic descriptive statistics and uni-variate tests will initially be done to explore the data. Final data analysis will involve the relevant multi-variate statistical modeling.

Study Design

Allocation: Randomized, Control: Uncontrolled, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Investigator), Primary Purpose: Treatment

Conditions

Malocclusion

Intervention

Extraoral anchorage, Intraoral skeletal anchorage - Temporary anchorage device, Intraoral dental anchorage

Location

Chesterfield Royal Hospital
Chesterfield
Derbyshire
United Kingdom
S445BL

Status

Enrolling by invitation

Source

Chesterfield and North Derbyshire Royal Hospital

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-07-23T21:12:27-0400

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Medical and Biotech [MESH] Definitions

Extraoral devices for applying force to the dentition in order to avoid some of the problems in anchorage control met with in intermaxillary traction and to apply force in directions not otherwise possible.

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Devices used for influencing tooth position. Orthodontic appliances may be classified as fixed or removable, active or retaining, and intraoral or extraoral. (Boucher's Clinical Dental Terminology, 4th ed, p19)

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