Mini screws - mini implants in orthodontics

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MINI-SCREWS - MINI IMPLANTS IN ORTHODONTICS WWW.ORTHOFREE.COM

MINI-SCREWS - MINI IMPLANTS IN ORTHODONTICSWWW.ORTHOFREE.COM

L. Massif, L. Frapier

Eliakim Mizrahi, Basil Mizrahi

Pre-operative radiograph with 2 mm inter-radicular space. Post-operative radiograph with 1.5 mm mini implant

Radiographic image of implant touching tooth root. Implant repositioned to avoid tooth root

- Second molars have been extracted and a lingual appliance fitted. - Mini-screw implants placed distal to the first molars

and elastomeric threads used to distalize the molars and premolars in stages

BIRTE MELSEN

Maxillary mini-implant locations. A. Below nasal spine.B. B. In the palate.

C. C. Infrazygomatic crest.

BIRTE MELSEN

Mandibular mini-implant locations. A. Retromolar area and molar region.

B. Alveolar process. C. Symphysis.

BIRTE MELSEN

Template bent from rectangular wire and affixed with light-cured acrylic. B. Periapical radiograph of template. C. Mini-implant insertion.

Traction force and tooth movement. : Center of resistance (CR) of the dental arch. Red ★arrow: orthodontic traction force; Black arrows: direction of tooth movement. Parallel

translation in the posterior direction is seen when the force vector is directed through the CR and remains parallel to the occlusal plane.

Mitsuru Motoyoshi

Parallel translation in the posterosuperior direction is seen when the forcevector passes through the CR and is directed in a posterosuperior direction.

Mitsuru Motoyoshi

Depression of molars and distal movement of the anterior teeth is expectedwhen the force vector is directed inferior to the CR

Second premolar needs to be uprighted and moved mesially. Mini-screw implant placed between the canine and first premolar

Vertical arm soldered to buccal tube of the first molar. Direct traction to a mini-screw placed between the canine and lateral incisor

Elastomeric chain from the mini-screw to the archwire. Direct anchorage, Spacesclosed and overjet reduced

Mini screws - mini implants in orthodontics

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