Severe anterior open-bite case treated using titanium screw anchorage

Shingo Kuroda, Akira Katayama, Teruko Takano-Yamamoto

Research output: Contribution to journalArticlepeer-review

166 Citations (Scopus)


Anterior open bite is often caused by a downward rotation of the mandible and/or by excessive eruption of the posterior teeth. In such cases, it is difficult to establish absolute anchorage for molar intrusion by traditional orthodontic mechanics. This article reports the successful treatment of a severe skeletal anterior open-bite case using titanium screw anchorage. A female patient 33 years eight months of age had open bite of -7.0 mm and increased facial height. The titanium screws were implanted in both the maxilla and the mandible, and an intrusion force was provided with elastic chains for 13 months. After active treatment of 19 months, her upper and lower first molars were intruded about 3.0 mm each, and good occlusion was achieved. Her retrognathic chin and convex profiles were improved by an upward rotation of the mandible. Our results suggest that titanium screws are useful for intrusion of molars in anterior open-bite cases.

Original languageEnglish
Pages (from-to)558-567
Number of pages10
JournalAngle Orthodontist
Issue number4
Publication statusPublished - 2004 Aug


  • Anterior open bite
  • Congenital missing tooth
  • Implant anchor
  • Titanium screw

ASJC Scopus subject areas

  • Orthodontics


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