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Completed

NCT Number: NCT05599074

Stability of Anterior Open Bite Treatment Using Extrusion Arches

This study investigated treatment effects and stability of anterior open bite cases using extrusion arches

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Key information

Conditions

Anterior Open Bite Malocclusion

Age range

18 year–40 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Alexandria faculty of Dentistry

Alexandria, 21589, Egypt

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • adult patients above 18 years anterior open bite 2-6 mm full permanent dentition incisors requiring extrusion

Exclusion criteria

  • increased incisal show at rest
  • gum show at smiling cleft patients patient with tempro-mandibular joint problems FMA angle above 45

Treatment and study plan

Extrusion arch

Device

A stainless steel pre-formed arch wire custom made by placing V-bends 3-5 mm mesial to the molar tubes, placed into the auxiliary molar tubes after leveling phase and tied over the main arch wire distal to the lateral incisors

Primary outcomes

  1. SNA angle

    Time frame: 18 months

    The anteroposterior position of maxillary base to the anterior cranial base.

  2. SNB angle

    Time frame: 18 months

    The anteroposterior position of mandibular base to the anterior cranial base.

  3. ANB angle

    Time frame: 18 months

    The anteroposterior position of maxillary base to the mandibular base.

  4. SN-MP angle

    Time frame: 18 months

    Mandibular plane angle, the angle between the mandibular plane (Go-Me) and anterior cranial base plane (SN).

  5. PP-MP angle

    Time frame: 18 months

    The angle between palatal plane (ANS-PNS) and mandibular plane.

  6. AFH

    Time frame: 18 months

    Anterior facial height, the measurement between Nasion (N) and Menton (Me).

  7. interincisal angle

    Time frame: 18 months

    • The inner angle between the long axis of the maxillary central incisor and long axis of mandibular central incisor.

  8. L1 to MP in mm

    Time frame: 18 months

    • The perpendicular distance between the most anterior mandibular central incisor and mandibular plane.

  9. L1 to MP angle

    Time frame: 18 months

    The angle between long axis of the most anterior central incisor and the mandibular plane.

  10. overbite

    Time frame: 18 months

    Vertical distances between the incisal edges of the maxillary and mandibular central incisors, perpendicular to N-Me.

  11. U1 to PP angular and linear measurements

    Time frame: 18 months

    -The angle and perpendicular distance between long axis of the most anterior upper central incisor and the Palatal plane (ANS-PNS).

  12. u6 to pp angle

    Time frame: 18 months

    -The angle between the axis between mesial cusp tip and mesiobuccal root apex of the upper first molar and the palatal plane.

  13. U6 to PP in mm

    Time frame: 18 months

    -The perpendicular distance between the mesial cusp tip of the upper first maxillary molar and the palatal plane.

  14. L6 to MP angle

    Time frame: 18 months

    The angle between the axis between mesial cusp tip and mesial root apex of the lower first molar and the mandibular plane.

  15. L6 to MP in mm

    Time frame: 18 months

    The perpendicular distance between mesial cusp tip of the lower first molar and the mandibular plane.

Sponsors and collaborators

Lead sponsor

Alexandria University

Other

Registry information

Official study title

Treatment Results and Stability of Anterior Open Bite Cases Treated Using Extrusion Arches in Adults

Important dates

Study start
2019
Primary completion
2022
Study completion
2022
First posted
Oct 31, 2022
Registry last updated
Nov 9, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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