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Functional appliance treatment outcome and need for additional orthodontic treatment with fixed appliance.

Artikel i vetenskaplig tidskrift
Författare Sara Rizell
Bengt Svensson
Christina Tengström
Heidrun Kjellberg
Publicerad i Swedish dental journal
Volym 30
Nummer/häfte 2
Sidor 61-8
ISSN 0347-9994
Publiceringsår 2006
Publicerad vid Institutionen för odontologi
Sidor 61-8
Språk en
Länkar www.ncbi.nlm.nih.gov/entrez/query.f...
Ämnesord Activator Appliances, Adolescent, Child, Cross-Sectional Studies, Dentition, Mixed, Female, Humans, Male, Malocclusion, Angle Class II, therapy, Orthodontic Appliance Design, Orthodontic Appliances, Functional, Orthodontics, Corrective, Retrospective Studies, Treatment Outcome
Ämneskategorier Odontologi, Ortodonti

Sammanfattning

The objectives of this study were to investigate (1) the results of treatment with functional appliances in mixed dentition run by general practitioners, (2) factors associated with a final treatment result of overjet of > or = 5 mm and (3) the need of additional treatment with fixed appliances. The study was designed as a retrospective, cross sectional survey and conducted in one of the Public Dental Clinics and the Orthodontic Clinic in Lidk?ping, Sweden. 122 patients (aged 7.6 -13.2 years) with an overjet of > or = 7 mm and consecutively collected for treatment with functional appliance therapy. Patient files were analysed with regard to gender, age, initial class II severity, type of functional appliance, co-operation, overall growth, number of missed appointments and treatment time. The treatment results were studied and correlated with the above-mentioned variables. The need for additional treatment with fixed appliances was evaluated. A final overjet of < or = 5 mm was observed in 61.5% of the patients, 48.4% interrupted treatment prematurely and 33.6% received additional treatment with fixed appliances. Good co-operation and extended treatment time was found to be correlated with a final overjet of < or = 5 mm. Other factors not associated with treatment outcome were age, gender, overjet, overbite, molar relation, type of functional appliance, overall growth and number of missed appointments. Activator treatment was successful in reducing overjet to 5 mm or less in almost two thirds of the treated patients. Mainly because of poor functional appliance treatment results or relapse, one third of the patients were retreated with fixed appliance. Since good co-operation is one of the main factors for successful treatment outcome, evaluation of the motivational level of both the parents and the patient before treatment start is crucial.

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