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Positioning Miniplates for Orthodontic Anchorage
J Oral Maxillofac Surg 69:2012-2013, 2011
Positioning Miniplates for Orthodontic Anchorage Eveline Gava, DDS,* José Augusto M. Miguel, DDS, MSD, PhD,† and Cátia C. A. Quintão, DDS, MSD, PhD‡ Titanium miniplates have been used in orthodontic treatment as stable anchorage devices.1-6 The pre-
cise height for miniplate placement is essential for effective orthodontic mechanics, and incorrect po-
FIGURE 1. A circle is drawn on the proposed site of the final position of the miniplate on a patient’s dental cast.
FIGURE 3. Acrylic resin is used to stabilize the wire to the teeth used as references.
Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011.
Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011.
FIGURE 2. A wire bend is supported on the occlusal surface of the posterior teeth and according to the drawing made previously.
FIGURE 4. Guide ready to be used during surgery.
Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011. Received from the Department of Orthodontics, Rio de Janeiro State University, Rio de Janeiro, Brazil. *Former Resident. †Professor. ‡Professor. Address correspondence and reprint requests to Dr Gava: Department of Orthodontics, Rio de Janeiro State University, Blvd 28
Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011.
de Setembro, 157, 2nd floor, Room 230, Vila Isabel, 20551-030 Rio de Janeiro, Rio de Janeiro, Brazil; e-mail: [email protected] © 2011 American Association of Oral and Maxillofacial Surgeons
0278-2391/11/6907-0037$36.00/0 doi:10.1016/j.joms.2010.12.010
2012
2013
GAVA, MIGUEL, AND QUINTÃO
segment supported on the occlusal surface of the posterior teeth can be bent to follow the drawing made with the pencil (Fig 2). With the wire segment correctly adapted on the separated cast, acrylic resin is used to stabilize it to the teeth used as a reference (Fig 3). Finishing and polishing may be necessary if there is any cutting edge or if any structure could interfere with surgery (Fig 4). After these steps, the guide is ready to be used through surgery, indicating exactly where the miniplate must be placed (Fig 5).
FIGURE 5. Guide being used through surgery, showing that the miniplate is positioned exactly where it was planned. Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011.
sitioning can make them useless for orthodontic movement. This article describes a simple and practical surgical guide developed to help surgeons and orthodontists in the determination of miniplate placement, making their communication easier. The first step is to define the ideal location for miniplate fixation based on the orthodontic treatment plan. Then, a pencil is used to draw a circle exactly on the place determined on a patient’s dental cast (Fig 1). A 0.028-inch stainless steel wire
References 1. Umemori M, Sugawara J, Mitani H, et al: Skeletal anchorage system for open-bite correction. Am J Orthod Dentofac Orthop 115:166, 1999 2. Daimaruya T, Nagasaka H, Umemori M, et al: The influences of molar intrusion on the inferior alveolar neurovascular bundle and root using the skeletal anchorage system in dogs. Angle Orthod 71:60, 2001 3. Clerck H, Geerinckx V, Siciliano S: The zygoma anchorage system. J Clin Orthod 36:455, 2002 4. Sherwood KH, Burch JG, Thompson WJ: Closing anterior open bite by intruding molars with titanium miniplate anchorage. Am J Orthod Dentofac Orthop 122:593, 2002 5. Miyawaki S, Koyama I, Inoue M, et al: Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage. Am J Orthod Dentofac Orthop 124:373, 2003 6. Sugawara J, Daimaruya T, Umemori M, et al: Distal movement of mandibular molars in adult patients with the skeletal anchorage system. Am J Orthod Dentofac Orthop 125:130, 2004
Positioning Miniplates for Orthodontic Anchorage Eveline Gava, DDS,* José Augusto M. Miguel, DDS, MSD, PhD,† and Cátia C. A. Quintão, DDS, MSD, PhD‡ Titanium miniplates have been used in orthodontic treatment as stable anchorage devices.1-6 The pre-
cise height for miniplate placement is essential for effective orthodontic mechanics, and incorrect po-
FIGURE 1. A circle is drawn on the proposed site of the final position of the miniplate on a patient’s dental cast.
FIGURE 3. Acrylic resin is used to stabilize the wire to the teeth used as references.
Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011.
Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011.
FIGURE 2. A wire bend is supported on the occlusal surface of the posterior teeth and according to the drawing made previously.
FIGURE 4. Guide ready to be used during surgery.
Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011. Received from the Department of Orthodontics, Rio de Janeiro State University, Rio de Janeiro, Brazil. *Former Resident. †Professor. ‡Professor. Address correspondence and reprint requests to Dr Gava: Department of Orthodontics, Rio de Janeiro State University, Blvd 28
Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011.
de Setembro, 157, 2nd floor, Room 230, Vila Isabel, 20551-030 Rio de Janeiro, Rio de Janeiro, Brazil; e-mail: [email protected] © 2011 American Association of Oral and Maxillofacial Surgeons
0278-2391/11/6907-0037$36.00/0 doi:10.1016/j.joms.2010.12.010
2012
2013
GAVA, MIGUEL, AND QUINTÃO
segment supported on the occlusal surface of the posterior teeth can be bent to follow the drawing made with the pencil (Fig 2). With the wire segment correctly adapted on the separated cast, acrylic resin is used to stabilize it to the teeth used as a reference (Fig 3). Finishing and polishing may be necessary if there is any cutting edge or if any structure could interfere with surgery (Fig 4). After these steps, the guide is ready to be used through surgery, indicating exactly where the miniplate must be placed (Fig 5).
FIGURE 5. Guide being used through surgery, showing that the miniplate is positioned exactly where it was planned. Gava, Miguel, and Quintão. Proper Positioning of Miniplates. J Oral Maxillofac Surg 2011.
sitioning can make them useless for orthodontic movement. This article describes a simple and practical surgical guide developed to help surgeons and orthodontists in the determination of miniplate placement, making their communication easier. The first step is to define the ideal location for miniplate fixation based on the orthodontic treatment plan. Then, a pencil is used to draw a circle exactly on the place determined on a patient’s dental cast (Fig 1). A 0.028-inch stainless steel wire
References 1. Umemori M, Sugawara J, Mitani H, et al: Skeletal anchorage system for open-bite correction. Am J Orthod Dentofac Orthop 115:166, 1999 2. Daimaruya T, Nagasaka H, Umemori M, et al: The influences of molar intrusion on the inferior alveolar neurovascular bundle and root using the skeletal anchorage system in dogs. Angle Orthod 71:60, 2001 3. Clerck H, Geerinckx V, Siciliano S: The zygoma anchorage system. J Clin Orthod 36:455, 2002 4. Sherwood KH, Burch JG, Thompson WJ: Closing anterior open bite by intruding molars with titanium miniplate anchorage. Am J Orthod Dentofac Orthop 122:593, 2002 5. Miyawaki S, Koyama I, Inoue M, et al: Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage. Am J Orthod Dentofac Orthop 124:373, 2003 6. Sugawara J, Daimaruya T, Umemori M, et al: Distal movement of mandibular molars in adult patients with the skeletal anchorage system. Am J Orthod Dentofac Orthop 125:130, 2004