대한치과교정학회지 (The korean journal of orthodontics)

  • 제43권2호
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  • Pages.101-109
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  • 2013
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  • 2234-7518(pISSN)
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  • 2005-372X(eISSN)
대한치과교정학회 (The Korean Association Of Orthodontists)
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Combined treatment with headgear and the Frog appliance for maxillary molar distalization: a randomized controlled trial

  • 투고 : 2012.09.23
  • 심사 : 2012.10.31
  • 발행 : 2013.04.25
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초록

Objective: To evaluate the efficiency of the Frog appliance (FA) alone or in combination with headgear for distalizing the maxillary molars. Methods: Fifty 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. Results: The 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 $4.96^{\circ}$ and $1.25^{\circ}$, 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. Conclusions: The 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.

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참고문헌

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피인용 문헌

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  2. A New Orthodontic Appliance with a Mini Screw for Upper Molar Distalization vol.2016, pp.None, 2013, https://doi.org/10.1155/2016/5728382
  3. Evaluation of Palatal Bone Thickness for Insertion of Orthodontic Mini-Implants in Adults and Adolescents vol.28, pp.6, 2017, https://doi.org/10.1097/scs.0000000000003906
  4. Comparison of Treatment Effects with Modified C-Palatal Plates vs Greenfield Molar Distalizer Appliances in Adolescents vol.44, pp.3, 2020, https://doi.org/10.17796/1053-4625-44.3.12
  5. New Method for Analysis of the Temporomandibular Joint Using Cone Beam Computed Tomography vol.21, pp.9, 2013, https://doi.org/10.3390/s21093070