Combined treatment with headgear and the Frog appliance for maxillary molar distalization: a randomized controlled trial
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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 4.96o and 1.25o, 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 highpull headgear combined with the FA can reduce these unfavorable changes and improve treatment outcomes.
Abstract
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 4.96o and 1.25o, 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 highpull headgear combined with the FA can reduce these unfavorable changes and improve treatment outcomes.
참고문헌 (27)
- Bolla E, "Evaluation of maxillary molar distalization with the distal jet: a comparison with other contemporary methods", Angle Orthod, 72, pp.481~494 (2002)
- Bondemark L, "Extraoral vs intraoral appliance for distal movement of maxillary first molars: a randomized controlled trial", Angle Orthod, 75, pp.699~706 (2005)
- Haydar S, "Comparison of Jones jig molar distalization appliance with extraoral traction", Am J Orthod Dentofacial Orthop, 117, pp.49~53 (2000)
- Angelieri F, "Comparison of the effects produced by headgear and pendulum appliances followed by fixed orthodontic treatment", Eur J Orthod, 30, pp.572~579 (2008)
- El-Mangoury NH, "Orthodontic cooperation", Am J Orthod, 80, pp.604~622 (1981)
- Egolf RJ, "Factors associated with orthodontic patient compliance with intraoral elastic and headgear wear", Am J Orthod Dentofacial Orthop, 97, pp.336~348 (1990)
- Koltun A, "Past and current trends in patient noncompliance research: focus on diseases, regimens-programs, and provider-disciplines", J Compliance Health Care, 1, pp.21~32 (1986)
- Nanda RS, "Prediction of cooperation in orthodontic treatment", Am J Orthod Dentofacial Orthop, 102, pp.15~21 (1992)
- Cureton SL, "Clinical versus quantitative assessment of headgear compliance", Am J Orthod Dentofacial Orthop, 104, pp.277~284 (1993)
- Itoh T, "Molar distalization with repelling magnets", J Clin Orthod, 25, pp.611~617 (1991)
- Gianelly AA, "Japanese NiTi coils used to move molars distally", Am J Orthod Dentofacial Orthop, 99, pp.564~566 (1991)
- Ghosh J, "Evaluation of an intraoral maxillary molar distalization technique", Am J Orthod Dentofacial Orthop, 110, pp.639~646 (1996)
- Carano A, "The distal jet simplified and updated", J Clin Orthod, 36, pp.586~590 (2002)
- Locatelli R, "Molar distalization with superelastic NiTi wire", J Clin Orthod, 26, pp.277~279 (1992)
- Kalra V, "The K-loop molar distalizing appliance", J Clin Orthod, 29, pp.298~301 (1995)
- Ludwig B, "The skeletal frog appliance for maxillary molar distalization", J Clin Orthod, 45, pp.77~84 (2011)
- Orton HS, "Distal movement of buccal segments with the “enmasse” removable appliance-its value in treating patients with mild Class II, Division 1 malocclusions: Part I, clinical techniques (how to do it)", Am J Orthod Dentofacial Orthop, 109, pp.234~243 (1996)
- Polat-Ozsoy O, "Soft tissue profile after distal molar movement with a pendulum K-loop appliance versus cervical headgear", Angle Orthod, 78, pp.317~323 (2008)
- Ricketts RM, "Bioprogressive therapy", pp.249~254 (1979), Rocky Mountain Orthodontics Inc
- Dahlberg G, "Statistical methods for medical and biological students" (1940), Interscience Publications
- Mehmet Bayram, "The frog appliance for upper molar distalization: a case report", 대한치과교정학회지, 40(1), pp.50~60 (2010), 대한치과교정학회
- Chiu PP, "A comparison of two intraoral molar distalization appliances: distal jet versus pendulum", Am J Orthod Dentofacial Orthop, 128, pp.353~365 (2005)
- Bussick TJ, "Dentoalveolar and skeletal changes associated with the pendulum appliance", Am J Orthod Dentofacial Orthop, 117, pp.333~343 (2000)
- Patel MP, "Comparative distalization effects of Jones jig and pendulum appliances", Am J Orthod Dentofacial Orthop, 135, pp.336~342 (2009)
- Kinzinger GS, "Anchorage quality of deciduous molars versus premolars for molar distalization with a pendulum appliance", Am J Orthod Dentofacial Orthop, 127, pp.314~323 (2005)
- Brickman CD, "Evaluation of the Jones jig appliance for distal molar movement", Am J Orthod Dentofacial Orthop, 118, pp.526~534 (2000)
- Ngantung V, "Posttreatment evaluation of the distal jet appliance", Am J Orthod Dentofacial Orthop, 120, pp.178~185 (2001)