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loss occurs as anterior teeth move mesially, shown by 2mm increase in overjet and also 1st molars moving mesially. The authors also stated that presence of 2nd molars can exacerbate the loss of anchorage. Therefore, addition of finger springs can be added to the 2nd molars to move them distally also.
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can be used in conjunction with this appliance. As the ACCO appliance will move the crown of molar distally, headgear will act to move the molar roots distally. In order to avoid loss of anchorage, they also recommended to achieve "overcorrection" of the molar distalization by 2mm or more. Anchorage
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In this appliance, the fingers springs are the main component which act against the 1st molars to move them distally. These springs apply about 100 to 125g of force to the molars after they are activated posteriorly. The original appliance developed by
Margolis included helices next to the laterals
39:. This appliance is intended to be worn 24 hours a day except during meals. It is one of the few removable appliances made for distalization of molars and thus require patient compliance for the treatment to be successful.
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and canines for a straight pull or
Northwest headgear tubes to be inserted. This appliance is specifically indicated for adolescents or pre-adolescents patients who are in mixed dentition and are very compliant.
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Management of appliance includes measuring overjet every appointment to measure the anchorage loss of the appliance.
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Warren, David W. (1992-02-01). "Clinical application of the ACCO appliance. Part 1".
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Warren, David W. (1992). "Clinical application of the ACCO appliance. Part II".
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Dietz et al. recommended that to avoid tipping of molar teeth, a high pull
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35:. This appliance is a removable type of appliance which was developed by
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161:"Molar distalization with the acrylic cervical occipital appliance"
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American
Journal of Orthodontics and Dentofacial Orthopedics
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American
Journal of Orthodontics and Dentofacial Orthopedics
255:"The ACCO Appliance - Journal of Clinical Orthodontics"
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Dietz, Victor S.; Gianelly, Anthony A. (2000-06-01).
96:Tipping of molar teeth (instead of translation)
86:Possible asymmetric distalization of the molars
99:Loss of anchorage where the overjet increases
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118:List of Orthodontic Functional Appliances
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21:Acrylic Cervical Occipital Anchorage
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63:Finger springs against first molars
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48:Palatal Acrylic with bite plate
83:Continuous forces to the teeth
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241:10.1016/0889-5406(92)70088-R
206:10.1016/0889-5406(92)70001-Q
23:is an appliance in field of
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123:List of palatal expanders
51:Modified Adams clasps on
165:Seminars in Orthodontics
284:Orthodontic appliances
178:10.1053/od.2000.5896
138:Herbert I. Margolis
128:Molar distalization
37:Herbert I. Margolis
259:www.jco-online.com
133:Pendulum appliance
57:Labial bow across
27:which is used for
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80:Patient friendly
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91:Disadvantages
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29:distalization
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262:. Retrieved
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171:(2): 91–97.
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25:orthodontics
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264:2016-11-20
144:References
75:Advantages
43:Components
278:Category
112:See also
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59:incisors
214:1739064
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210:PMID
17:ACCO
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