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ORIGINAL ARTICLE
Year : 2018  |  Volume : 7  |  Issue : 1  |  Page : 5

Dentoskeletal effects of the forsusTM fatigue resistance device in the treatment of class II malocclusion: A systematic review and meta-analysis


1 Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
2 Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia; Alexandria University, Alexandria, Egypt

Correspondence Address:
Dr. Mona A Abbassy
Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah

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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jos.JOS_80_17

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OBJECTIVE: The aim of this systematic review and meta-analysis is to quantitatively compare previous studies that evaluated skeletal and dentoalveolar effects of the ForsusTM Fatigue Resistance Device (FRD) in the treatment of Class II malocclusion with a matched untreated control group. MATERIALS AND METHODS: Four electronic searches PubMed, Web of Science, Cochrane Library, and Science Direct that were limited to articles on human studies comparing the effect of Forsus appliance with a matched control group in the treatment of Class II malocclusion from the year (2000–2017). An additional manual search was carried out by examining the references of the included articles, SEARCH terms included; Forsus and Class II malocclusion. The quality of the included studies was assessed using the modified methodological score for clinical trials. The data were analyzed using Michael Borenstein's Comprehensive Meta-Analysis Software (V3.3.070, Biostat, Inc., US). RESULTS: Seven studies were included comprising 273 participants (Forsus group = 142; control group = 131). The results indicated a statistical significant skeletal effect of the Forsus appliance on increasing the occlusal plane only (P < 0.001). The results also indicated a statistical significant (P < 0.001) dentoalveolar effects of the Forsus appliance on the following outcomes; protruding, proclining, and intruding lower incisors; retroclining upper incisors, distalizing and intruding upper molars, as well as reducing overjet and overbite. CONCLUSIONS: The ForsusTM showed positive effects on the maxillary incisors and first molars as well as overjet and overbite. However, multiple negative effects were reported on the occlusal plane and lower incisors that need to be considered when using such appliance in treating Class II malocclusion.


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