World journal of orthodontics · 2009
Influence of straight-pull headgear on the eruption pattern of maxillary canines: a retrospective study.
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Fichera Grazia, Greco Mariagrazia, Caltabiano Mario, Leonardi Rosalia
Аннотация
AIM: To evaluate the effect of the straight-pull headgear and activator (Andresen type) treatment on the eruption pattern of impacted maxillary canines.
METHODS: Mesiodistal positional, angular, and vertical changes of impacted canines were evaluated and statistically analyzed in pre- and posttreatment panoramic radiographs of 22 patients (12 treated with combination headgear, 10 treated with an activator).
RESULTS: Eruption of the permanent canines in the group treated with straight-pull headgear was significantly more successful (88%) than in the group treated with an activator (62%).
CONCLUSION: Mesiodistal and vertical crown position, as well as angulation of canines, differ significantly between subjects treated with straight-pull headgear or an activator.
METHODS: Mesiodistal positional, angular, and vertical changes of impacted canines were evaluated and statistically analyzed in pre- and posttreatment panoramic radiographs of 22 patients (12 treated with combination headgear, 10 treated with an activator).
RESULTS: Eruption of the permanent canines in the group treated with straight-pull headgear was significantly more successful (88%) than in the group treated with an activator (62%).
CONCLUSION: Mesiodistal and vertical crown position, as well as angulation of canines, differ significantly between subjects treated with straight-pull headgear or an activator.