Evaluation of skeletal Class 2 patients with different vertical growth patterns

Year 2012, Volume: 39 Issue: 1 - Volume: 39 Issue: 1, 17 - 21, 01.02.2012

Çağrı Türköz Çağrı Ulusoy Burcu Baloş Tuncer Cumhur Tuncer Selin Kale Varlık

Abstract

The aim of this study was to evaluate the cephalometric changes of untreated skeletal Class 2 patients with different vertical growth patterns. First group contains 17 patients,11 girls and 6 boys, who has optimum vertical growth pattern SN/GoGn 32±6˚ and 2nd group contains 17 patients, 9 girls and 8 boys, who has vertical growth pattern SN/GoGn > 38˚ . No statistical significant changes were observed in neither intragroup nor intergroup evaluation. In longitudinal studies which evaluate the changes in craniofacial structures of treated skeletal Class 2 malocclusions, there may be no need to classify the groups according to vertical growth pattern.

Keywords

Skeletal class 2, Vertical growth pattern

Değişik dik yön yüz büyüme paternine sahip iskeletsel sınıf 2 vakaların incelenmesi

Abstract

Bu çalışmanın amacı, tedavi görmemiş farklı dik yön yüz büyüme paternine sahip iskeletsel Sınıf 2 bireylerin çeşitli sefalometrik değerlerinin gözlem süresinde değerlendirilmesi ve farklılıklarının tesbitidir. Çalışmaya, mandibular retrognatiyle karakterize iskeletsel Sınıf 2, Angle sınıf II bölüm 1 dişsel ilişkide olan 34 birey dahil edildi. Birinci grup, optimum SN/GoGn 32±6˚ 11 kız, 6 erkek 17 bireyden oluşurken, 2. Grup SN/GoGn açısı 38˚ den büyük olan, 9’ u kız 8’ i erkek toplam 17 yüksek açılı bireyden oluşmaktadır. Her iki grupta da, gözlem dönemi süresince hem grup içi, hem de gruplararası görülen değişimler istatistiksel olarak önem arz etmemiştir. İskeletsel Sınıf 2 fonksiyonel tedavilerin kraniyofasiyal yapıda oluşturduğu değişimlerin inceleneceği longitudinal çalışmalarda farklı dik yön yüz boyutlarına sahip bireylerin ayrı ayrı kontrol grupları altında toplanmasına gerek kalmadığı sonucuna ulaşılabilir

Keywords

İskeletsel sınıf 2, Dik yön yüz büyümesi

References

• 1) Baccetti T, Franchi L, McNamara JA Jr, Tollaro I. Early dentofacial features of Class II malocclusion: a longitudinal study from the deciduous through the mixed dentition. Am J Orthod Dentofacial Orthop 1997;111:502-9.
• 2) Baccetti T, Franchi L. In search of the philosopher’s stone: a preliminary study of growth in Class III malocclusion. In: McNamara JA Jr, editor. Growth and treatment: a meeting of the minds. Volume 41. Craniofacial Growth Series. Ann Arbor: Center for Human Growth and Development; University of Michigan; 2005. p. 123-37.
• 3) Ngan PW, Byczek E, Scheick J. Longitudinal evaluation of growth changes in Class II division 1 subjects. Semin Orthod 1997;3:222-31.
• 4) Reyes BC, Baccetti T, McNamara JA Jr. An estimate of craniofacial growth in Class III malocclusion. Angle Orthod 2006;76:577- 84.
• 5) Stahl F, Baccetti T, Franchi L, McNamara JA Jr. Longitudinal growth changes in untreated subjects with Class II Division 1 malocclusion. Am J Orthod Dentofacial Orthop 2008;134:125-37.
• 6) Nelson C, Harkness M, Herbison P. Mandibular changes during functional appliance treatment. Am J Orthod Dentofacial Orthop 1993;104:153-161.
• 7) Nanda SK. Pattern of vertical growth in face. Am J Orthod 1988; 93: 103-16.
• 8) Van Spronsen PH, Weijs WA, Van Ginkel FC, Prahl-Andersen B. Jaw muscle orientation and moment arms of long-face and normal adults. J Dent Res 1996; 75: 1372-80.
• 9) Kinzinger G, Dietrich P. Skeletal effects in class II treatment with the functional mandibular advancer (FMA)?. J Orofac Orthop 2005;66:469-90.
• 10) Nalbantgil D, Arun T, Sayınsu K, Fulya I. Skeletal, dental and soft tissue changes induced by the jasper jumper appliance in late adolascence. Angle Orthod 2005;75:426-36
• 11) Ruf S, Pancherz H. Herbst/Multibracket appliance treatment of Class II Division 1 malocclusions in early and late adulthood: A prospective ephalometric study of consecutively treated subjects. Eur J Orthod 2006;28:352-60.)
• 12) O’Brien K, Wright J, Conboy F, Sanjie Y, Mandall N, Chadwick S et al. Effectiveness of early orthodontic treatment with the twin-block appliance: A multicenter randomized controlled trial Part 1: Dental and skeletal effects. Am J Orthod Dentofacial Orthop 2003;124:234-43.
• 13) Chen JY, Will LA, Niedermann R. Analysis of eficacy of functional appliances on mandibular growth. Am J Orthod Dentofacial Orthop 2002;122:470-6.
• 14) Proffitt WR, Fields HW, Moray LJ. Prevalence of maloclusion and orthodontic treatment need in the United States: Estimates from the NHANES III survey. Int J Adult Orthod Orthognath Surg 1998; 13:97-106.
• 15) Bishara SE, Jakobsen JR, Vorhies B, Bayati P. Changes in dentofacial structures in untrated class II division 1 and normal subjets: A longitudinal study. Angle Orthod 1997;67:55-66.
• 16) Türkkahraman H, Sayın Ö. Effects of activator and activator headgear treatment: comparison with untreated Class II subjects. Eur J Orthod 2006;28:27-34.