Combined treatment with headgear and the Frog appliance for maxillary molar distalization: a randomized controlled trial

Abstract

ObjectiveTo evaluate the efficiency of the Frog appliance (FA) alone or in combination with headgear for distalizing the maxillary molars.MethodsFifty patients (25 males and 25 females) aged 12.6 - 16.7 years who received treatment for Class II malocclusion at the Orthodontic Clinic of Al-Baath University were selected for this study and randomly divided into 2 equal groups. Maxillary molar distalization was achieved using the FA alone (group 1) or a combination of the FA with high-pull headgear worn at night (group 2). Lateral cephalograms were obtained before and after treatment.ResultsThe maxillary molars moved distally by 5.51 and 5.93 mm in groups 1 and 2, respectively. Distal movements were associated with axial tipping by 4.96° and 1.25°, and with loss of anchorage by mesial movement of the second maxillary premolars by 2.70 and 0.90 mm in groups 1 and 2, respectively. The combined use of the FA and nighttime high-pull headgear decreased the distalization time and improved the ratio of maxillary molar distalization movement relative to the overall opening space between the first maxillary molars and second premolars.ConclusionsThe FA can effectively distalize the maxillary molars, this distalization associates with some unfavorable changes. Nighttime use of high-pull headgear combined with the FA can reduce these unfavorable changes and improve treatment outcomes.

Skeletal and dental effects of molar distalization using a modified palatal anchorage plate in adolescents

“…Previous studies showed 6.4 and 3.9 mm of first molar distalization using TAD-anchored appliances, with distal tipping of 10.9u and 8.8u, respectively. 13,14 Meanwhile, Burhan 29 showed 5.5 mm of molar distalization, 4.9u of distal tipping, and 2.7 mm loss of anchorage with a Frog appliance; however, when combined with headgear, the values were 5.9 mm, 1.25u, and 0.9 mm, respectively, which increased bodily distalization with less anchorage loss.…”

Correction of severe bimaxillary protrusion with first premolar extractions and total arch distalization with palatal anchorage plates

“…Recently, the combination of the 2 modalities has been reported. 12 Although this decreased the unfavorable effects of the intraoral appliances, it still depended on the patient's cooperation. Several authors have reported the application of temporary skeletal anchorage devices to distalize the maxillary posterior teeth.…”

Sinif Ii Di̇vi̇zyon 1 Malokluzyona Sahi̇p Bi̇r Hastanin Servi̇kal Headgear Ve Sabi̇t Ortodonti̇k Apareyler İle Tedavi̇si̇: Olgu Sunumu

“…Ağız içi molar distalizasyonu yöntemlerinin, ağız dışı yöntemlere göre kullanımlarının daha rahat ve kolay olması, estetik açıdan daha kabul edilebilir olmaları ve devamlı kuvvet uyguladıkları için tedavi süresi-nin kısa olması gibi bazı avantajlara sahip olsa da anKraj kaybı, molar tipingi ve ekstrüzyonu sonucu oluşan bite açılması ve overjette artış gibi yan etkilere sahiptir 19 . Son yıllarda, ağız içi molar distalizasyonu yöntemlerinin avantajlarına sahip olduğu, ama dezavantajlarını taşımadığı düşünülerek ortodontik tedavilerde ankraj amacıyla implant ve mini plaklar yaygın olarak kullanılmaya başlanmıştır 11 .…”