Stability of Anterior Open Bite Treatment Using Extrusion Arches

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

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

Study Overview

• Status: Completed
• Conditions: Anterior Open Bite Malocclusion
• Intervention / Treatment: Device: extrusion arch

• Study Type: Interventional
• Enrollment (Actual): 23
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Egypt
  • Alexandria, Egypt, 21589
    • Alexandria Faculty of Dentistry

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 40 years (ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

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

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: NA
• Interventional Model: SINGLE_GROUP
• Masking: NONE

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: AOB adults; adult patients over 18 years having an anterior open bite of more than 2 mm, requiring incisors extrusion	Device: extrusion arch; 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

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
SNA angle	The anteroposterior position of maxillary base to the anterior cranial base.	18 months
SNB angle	The anteroposterior position of mandibular base to the anterior cranial base.	18 months
ANB angle	The anteroposterior position of maxillary base to the mandibular base.	18 months
SN-MP angle	Mandibular plane angle, the angle between the mandibular plane (Go-Me) and anterior cranial base plane (SN).	18 months
PP-MP angle	The angle between palatal plane (ANS-PNS) and mandibular plane.	18 months
AFH	Anterior facial height, the measurement between Nasion (N) and Menton (Me).	18 months
interincisal angle	- The inner angle between the long axis of the maxillary central incisor and long axis of mandibular central incisor.	18 months
L1 to MP in mm	- The perpendicular distance between the most anterior mandibular central incisor and mandibular plane.	18 months
L1 to MP angle	The angle between long axis of the most anterior central incisor and the mandibular plane.	18 months
overbite	Vertical distances between the incisal edges of the maxillary and mandibular central incisors, perpendicular to N-Me.	18 months
U1 to PP angular and linear measurements	-The angle and perpendicular distance between long axis of the most anterior upper central incisor and the Palatal plane (ANS-PNS).	18 months
u6 to pp angle	-The angle between the axis between mesial cusp tip and mesiobuccal root apex of the upper first molar and the palatal plane.	18 months
U6 to PP in mm	-The perpendicular distance between the mesial cusp tip of the upper first maxillary molar and the palatal plane.	18 months
L6 to MP angle	The angle between the axis between mesial cusp tip and mesial root apex of the lower first molar and the mandibular plane.	18 months
L6 to MP in mm	The perpendicular distance between mesial cusp tip of the lower first molar and the mandibular plane.	18 months

Collaborators and Investigators

• Sponsor: Alexandria University
• Investigators: Principal Investigator: tasneem hammad, BDS, Alexandria University; Study Director: Hanan Ismail, PHD, Alexandria University

Study record dates

Study Major Dates

• Study Start (ACTUAL): April 1, 2019
• Primary Completion (ACTUAL): May 1, 2022
• Study Completion (ACTUAL): May 1, 2022

Study Registration Dates

• First Submitted: October 18, 2022
• First Submitted That Met QC Criteria: October 25, 2022
• First Posted (ACTUAL): October 31, 2022

Study Record Updates

• Last Update Posted (ACTUAL): November 9, 2022
• Last Update Submitted That Met QC Criteria: November 5, 2022
• Last Verified: November 1, 2022

More Information

Terms related to this study

• Keywords: stability; extrusion; extrusion arches; anterior open bite; intrusion
• Additional Relevant MeSH Terms: Stomatognathic Diseases; Tooth Diseases; Malocclusion; Open Bite
• Other Study ID Numbers: AOBtreatmentinadults

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No