Keywords: Extra-radicular, Infrazygomatic screws crest, Infrazygomatic screws Total arch distalization.
Introduction:
Invention of mini-plates and mini-screw implants as anchoring in orthodontic treatment allows for distal translation of anterior or posterior teeth (or both) without anchorage compromise which was a challenge before by using traditional dental anchorage unit. As a result of the necessity for maximum anchoring control, while requiring little patient participation, implant-aided orthodontic therapy has seen widespread use and development. In spite of being frequently inserted in portions of the alveolar process situated between the roots of consecutive teeth, referred to as Inter-radicular sites, newer locations referred to as Extra-radicular sites such as Infra-zygomatic Crest have following advantages which led a number of researchers to suggest the infrazygomatic crest area as potential locations for establishing an effective and secure anchoring system, and improving therapeutic boundaries:
1. Reduces the possibility of unintentional root injury.
2. More cortical bone with denser quality.
3. No obstruction of a tooth or a set of teeth’s mesiodistal movement.
4. The acquired anchoring allows for retraction or mesialization of the complete dental arch as well as dentition.
5. Lower failure rate.
6. Requires fewer implants to tackle difficult problems.
The objective of this presentation is to encompass and discuss the development, usability, efficacy, biomechanics and scope of implant-assisted orthodontics, specifically Infra-zygomatic crest (IZC) implants in the contemporary orthodontic treatment modalities focusing on the distalization of whole maxillary arch in class II maxillary prognathic cases and also distalization of maxillary arch in presurgical orthognathic decompensation procedure of class III surgical cases in order to avoid premolars extraction including case reports.
Biography:
Hamid Ghasemi; FODD, FOS, MSD, DMD
* Board member of Iranian Board of Orthodontics 2015
* Fellow in orthodontics and Dentofacial Deformity: 2014, Department of Orthodontics, College of Dentistry, University of Kanagawa, Japan
* Craniofacial Fellowship in Orthognathic Surgery 2014, Chan Gung Memorial Hospital, Taipei, Taiwan
* Master of Science in Dentistry, Ms. Orthodontics: 2013, Department of Orthodontics, College of Dentistry, University of the Philippines, Manila
* Doctor of Dental Medicine: 2009, College of Dentistry, University of the Philippines, Manila
* Former member of Advanced Orthodontic Course in MEAW Philosophy & Treatment Mechanics, MEAW Study Club, Manila, Under Supervision of Kanagawa Orthodontic Department 2012 -2015
* Private orthodontic practice in Karaj & Tehran, Iran: since 2015
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