Clinical Trial: The Effect of Timing on Orthodontic Treatment
Study Status: Active, not recruiting
Recruit Status: Active, not recruiting
Study Type: Interventional
Official Title: The Effect of Timing on Orthodontic Treatment - Studied by Randomized Clinical Settings
Brief Summary:
The aim of this longitudinal randomized investigation is to determine the long-term effects of early headgear treatment on craniofacial structures and dental arches, compared to treatment started later, during the most active growth period in Class II patients.
The aim was further to find out the possible benefits and the burden of early treatment to the patients and parents of these common malocclusions, when compared to groups treated later, but with the same methods as much as possible.
The hypothesis is that the timing of treatment has significant effects on orthodontic treatment total time, the general outcome of the treatment, and the compliance of the patient.
Detailed Summary:
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Background In spite of the fact that about 30 to 50% of the children in Europe undergo orthodontic treatment during growth, negligible amount of evidence based data is available concerning these treatments.
The most used treatment method in Finland, and one of the most popular in the world, is to treat dental crowding and class II malocclusion with the headgear (Mäntysaari et al., 2004; Pirttiniemi et al., 2005; Pietilä et al., 2008).
The goal of the HG treatment is variously listed as to inhibit maxillary growth, to stimulate mandibular growth, or to ease the crowding. During the recent years McNamara (2002) and Fenderson et al (2004) have emphasized the advantages of the lateral expansion of dental arches in the treatment of crowding, especially stressing the stability of the results.
The views of the effects of cervical headgear (HG) are to some extent obscure, at least when the long-term effects are concerned. Most reports that are based on a short-term follow-up, describe a restricted maxillary anterior growth. During the later growth, it is not clear what is the general association of early orthodontic treatment on crowding, but our earlier results show that in the final outcome there is no significant difference in stability of the treatment if crowding is treated with early headgear or later with fixed appliances only, at least when the long-term effects of the treatment are concerned (Krusinkiene et al., 2008).
A valid evidence based data is rare and the thus exact conclusions are very difficult to be set (Petrén and Bondemark, 2008).
- Preliminary Studies We conducted a randomized clin
Sponsor: University of Oulu
Current Primary Outcome: Normal occlusion, short treatment time [ Time Frame: 10 years ]
Normal occlusion is measure as occusal contacts and overbite/overjet, but also on x-rays.
Original Primary Outcome: Same as current
Current Secondary Outcome: Patient compliance [ Time Frame: 10 years ]
There may be differences in patient compliance when the treatment is done at different ages. Also the comparison of behavioral issues is important here.
Original Secondary Outcome: Same as current
Information By: University of Oulu
Dates:
Date Received: December 9, 2013
Date Started: January 2005
Date Completion: December 2018
Last Updated: March 13, 2017
Last Verified: March 2017
