Değişik dik yön yüz büyüme paternine sahip iskeletsel sınıf 2 vakaların incelenmesi
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
Evaluation of skeletal Class 2 patients with different vertical growth patterns
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.
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- 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.