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June 19, 2023Egyptian Dental Journal /Egyptian Dental JournalOpen Access

One Phase versus Two Phase Treatment in Management of Growing Class II patients: A Retrospective study

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Authors

EEEman ElabbassyAin Shams UniversityRARamy AbdeldayemAin Shams University

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Overview

Retrospective study demonstrates greater mandibular growth and profile improvement with two-phase therapy in growing Class II patients, indicating clear skeletal benefits over single-phase care.

Key Points

  • To compare the skeletal, dental, and soft tissue effects of one-phase fixed appliance treatment using Class II elastics versus two-phase treatment using a Twin-block appliance followed by fixed appliances in late growing Class II patients.
  • Retrospective cephalometric analysis of 20 adolescent female patients presenting with skeletal Class II malocclusion due to mandibular deficiency.
  • Patients received either one-phase fixed orthodontic treatment with Class II intermaxillary elastics (n=10; mean age 12.55±0.88 years) or two-phase therapy with a Twin-block appliance followed by fixed braces (n=10; mean age 11.57±1.03 years).
  • Two-phase treatment produced significant skeletal changes, showing an increased SNB angle (1.91±0.72°), increased mandibular length (Co-Gn = 3.66±2.04 mm), and decreased ANB angle (-1.91±0.49°).
  • One-phase treatment produced no statistically significant skeletal changes, but led to significantly more mandibular incisor proclination and incisor intrusion.
  • Soft tissue facial convexity significantly improved only in the two-phase cohort, with both upper and lower lips moving forward more significantly than in the one-phase group.

Cite This Study

Elabbassy et al. (2023) studied this question.

synapsesocial.com/papers/6a9bd0e18680cd2c758505fchttps://doi.org/10.21608/edj.2023.198366.2476
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Also Consider

Synapse has enriched one closely related paper. Consider it for comparative context:

  1. 1A prospective evaluation of bass, bionator and twin block appliances. Part I - the hard tissues1998 · 251 citations