Complications encountered during Forsus Fatigue Resistant Device therapy

Abstract

Introduction: Fixed functional appliances are non-compliant solutions to Class II malocclusion treatment. The clinician, however, should be careful of unexpected complications during the therapy. Methods: 58 female adolescents who presented with Class II malocclusion due to deficient mandible were treated with Forsus Fatigue Resistant Device (FFRD) therapy until an overcorrection to an edge to edge incisor relationship was achieved. Results: Incisor relationship and overjet were corrected successfully in all the subjects. Twenty-two patients had a complications-free treatment, while several complications were encountered with the remaining 36 subjects. In particular, mandibular canine rotation and development of posterior crossbites were the most common complications, with percentages of 51.7% and 25.9% respectively. Other complications included the breakage and shearing of the extraoral tubes of the first molar bands, and excessive intrusion of the upper first molars. Conclusions: FFRD is an efficient appliance for treatment of Class II malocclusion; however, different complications were encountered during the appliance therapy. A focus on taking precautions and applying preventive measures can help to avoid such problems, reducing the number of emergency appointments and enhancing the treatment experience with the appliance.

Composite Bite Blocks—An Indigenous, Simple, Fixed Class II Corrector

“…The most commonly encountered issues were breakage of bands or splints, breakage of telescoping mechanisms, loosening of bands or splints, trauma to buccal mucosa, rotated and/or intruded teeth, canting in the occlusal plane, and development of posterior cross bite. 4, 5…”

“…The most commonly encountered issues were breakage of bands or splints, breakage of telescoping mechanisms, loosening of bands or splints, trauma to buccal mucosa, rotated and/or intruded teeth, canting in the occlusal plane, and development of posterior cross bite. 4,5 This versatile appliance almost takes care of all the disadvantages encountered with routine FFA. As the upper and lower posterior teeth are all engaged to a rigid rectangular archwire there is no eruption of posteriors which causes and increase in lower anterior facial height.…”

Sabit fonksiyonel aygıtların bireylerin ağzıyla ilgili yaşam kalitesine etkisi

“…The authors used a different survey to assess overall impression of the appliance and advised clinicians to be vigilant about cheek irritations. Recently, Elkordy et al 35 demonstrated the clinical complications faced during the FFRD therapy and encountered complications of FFRD as breakage, separation of parts, spring fatigue, sheared molar tubes, soft tissue swelling, and severe cheek irritation. Subsequently, the authors advised to inform patients before the start of the FFRD therapy.…”