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. 2013 Mar;83(2):327-33.
doi: 10.2319/052912-449. Epub 2012 Sep 28.

Class II subdivision treatment with the Herbst appliance

Niko C Bock  1 , Benjamin Reiser, Sabine Ruf
Affiliations

Class II subdivision treatment with the Herbst appliance

Niko C Bock et al. Angle Orthod. 2013 Mar.

Abstract

Objective: To assess the effectiveness of Class II subdivision Herbst nonextraction treatment and its short-term stability retrospectively.

Materials and methods: Twenty-two Class II subdivision (SUB: right-left molar difference ≥0.75 cusp width) and 22 symmetric Class II patients (SYM: ≥0.75 cusp width bilaterally) were matched according to gender and pretreatment handwrist radiographic stage. The mean treatment duration of the Herbst and subsequent multibracket phase was 8 months and 14 months, respectively. The mean retention period amounted to 36 months. Dental casts from before treatment (T1), after Herbst treatment (T2), after Multibracket treatment (T3), and after retention (T4) were evaluated.

Results: A bilateral Class I or super Class I molar relationship was seen in 72.7% (SUB) and 77.3% (SYM) at T3. The corresponding values at T4 were 63.7% (SUB) and 72.7% (SYM). A unilateral or bilateral Class III molar relationship was more frequent in the SUB group (T3: +4.6%; T4: +13.6%). For overjet, similar mean values were seen in both groups after treatment (T3: SUB, 2.7 mm; SYM, 2.3 mm) and after retention (T4: SUB, 3.0 mm; SYM, 3.4 mm). This was also true for the midline shift (T3: SUB, -0.4 mm; SYM, 0.0 mm; T4: SUB, -0.3 mm; SYM, 0.0 mm).

Conclusion: Class II subdivision Herbst treatment was successful similarly to symmetric Class II Herbst treatment. However, a slight overcompensation of the molar relationship (Class III tendency) was more frequent in the subdivision patients (original Class I side).

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Figures

Figure 1.
Figure 1.
(a) Individual molar relationship (right side) in the subdivision (SUB) and symmetric (SYM) Class II groups at T1 (before treatment), T2 (after Herbst treatment), T3 (after MB treatment) and T4 (after retention).
Figure 1.
Figure 1.
Continued. (b) Individual molar relationship (left side) in the subdivision (SUB) and symmetric (SYM) Class II groups at T1 (before treatment), T2 (after Herbst treatment), T3 (after MB treatment), and T4 (after retention).
See this image and copyright information in PMC

References

    1. Angle EH. Classifications of malocclusions. Dent Cosmos. 1899;41:248–264.
    1. Alavi DG, Begole EA, Schneider BJ. Facial and dental arch asymmetries in Class II subdivision malocclusion. Am J Orthod Dentofacial Orthop. 1988;93:38–46. - PubMed
    1. Azevedo ARP, Janson G, Henriques JFC, De Freitas MR. Evaluation of asymmetries between subjects with Class II subdivision and apparent facial asymmetry and those with normal occlusion. Am J Orthod Dentofacial Orthop. 2006;129:376–383. - PubMed
    1. Jäger A, Gripp L, Lorch V. Kieferorthopädische Befunde bei Patienten mit einseitiger Angle-Klasse II. Fortschr Kieferorthop. 1993;54:196–202. - PubMed
    1. Janson G, De Lima KJRS, Woodside DG, Metaxas A, De Freitas MR, Henriques JFC. Class II subdivision malocclusion types and evaluation of their asymmetries. Am J Orthod Dentofacial Orthop. 2007;131:57–66. - PubMed

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