Mini-vis : l’orthodontie de demain

Disjonction maxillaire rapide assistée par mini-implants palatins chez l’adolescent – Étude préliminaire

“…Seuls certains cas cliniques ont et e rapport es dans la litt erature [5,7]. Le principe de l'expansion maxillaire rapide à appui mixte, dentaire et osseux, pourrait limiter ces effets ind esirables.…”

“…A mapping study of adolescents performed in 2010 [4] indicated the most appropriate site, providing the necessary 5-6 mm of intra-osseal anchorage (paramedian at premolar level; 2-4 mm from the intermaxillary suture; mucosal thickness less than 2 mm [4][5][6][7]); (b) the head of the mini-screw must be sufficiently retentive (bracket or cruciform head for example); (c) a period of 2 months was left before loading of the miniimplants so as to obtain clearly differentiated robust bone around the implant (lamellar bone); (d) then the anchor bands for 16 and 26 were chosen and a silicon impression was obtained using the Wash Technic method. A mapping study of adolescents performed in 2010 [4] indicated the most appropriate site, providing the necessary 5-6 mm of intra-osseal anchorage (paramedian at premolar level; 2-4 mm from the intermaxillary suture; mucosal thickness less than 2 mm [4][5][6][7]); (b) the head of the mini-screw must be sufficiently retentive (bracket or cruciform head for example); (c) a period of 2 months was left before loading of the miniimplants so as to obtain clearly differentiated robust bone around the implant (lamellar bone); (d) then the anchor bands for 16 and 26 were chosen and a silicon impression was obtained using the Wash Technic method.…”

Disimpaction of maxillary canines using temporary bone anchorage and cantilever springs

“…TAD in the shape of orthodontic plates or screws offer the most appropriate solution. Technically speaking, the buccal position of TAD, as opposed to the palatal, is easier to achieve and offers a wider choice for the orientation of the traction [22]. TAD ensure consistency of the mechanical system; -good cantilever stability at the fixation points to limit mucosal injury and avoid occlusal interference.…”

“…L'ancrage temporaire osseux (ATO), sous la forme de plaques ou de vis orthodontiques, est la solution idoine. Le positionnement vestibulaire plutôt que palatin de l'ATO est techniquement plus ais e et offre un choix de la direction de la force de traction plus important [22]. L'utilisation d'ATO assure la coh erence du syst eme m ecanique, qu'il soit direct ou indirect ; -une bonne stabilit e du cantilever au(x) point(s) de fixation limitant toute blessure muqueuse et toute interf erence occlusale.…”

“…[18][19][20][21][22][23][24]. In addition to the impacted 23, the patient displayed a dental Class II,2 with no skeletal involvement, combined with pronounced maxillary incisor deep bite.…”