Sagittal skeletal correction using symphyseal miniplate anchorage systems : Success rates and complications.

OBJECTIVES: Aim of this study is to evaluate success rates and complications related with symphyseal miniplate anchorage systems used for treatment of Class 2 and Class 3 deformities.

METHODS: A total of 58 miniplates applied to 29 growing patients were evaluated. The first group comprised 24 symphyseal miniplates applied to 12 patients and Forsus Fatigue Resistant Devices were attached to the head of the miniplates for mandibular advancement. The second group consisted of 34 symphyseal miniplates applied to 17 patients and intermaxillary elastics were applied between acrylic appliances placed on the maxillary dental arch and the symphyseal miniplates for maxillary protraction. Success rate and complications of the symphyseal plate-screw anchorage system were evaluated.

RESULTS: The overall success rate of symphseal miniplates was 87.9%. Six miniplates showed severe mobility and 2 miniplates broke during orthodontic treatment. Infection, miniplate mobility and mucosal hypertrophy were statistically different between the two groups.

CONCLUSIONS: Symphyseal miniplates were generally used as successful anchorage units in most patients. Infection, mobility, and mucosal hypertrophy occurred more frequently in Class 2 deformity correction. However, the success rates regarding the two treatment modalities were comparable.