Molar Intrusion in Open Bite Treatment

NCT02865213 | Completed DMC

• 1 other identifier: UDDS-Ortho-01-2016
• Study Type: interventional
• Target: 45
• Locations: 1 country
• Sites: 1

Brief Summary

This experimental study will evaluate the effect of different methods for the molar intrusion (compared with the control group) in adolescent and adult patients with open bite malocclusion. The study sample will consist of 45 patients with anterior open bite. The sample will be randomly allocated into two experimental groups, in addition to a control group. The investigators will apply a modified version of the Open Bite Appliance (OBA), by Erverdi and Usumez, for all patients in upper posterior teeth. For this purpose, miniplates will be used in the first treatment group, while miniscrews will be used in the second treatment group. In the control group, only OBA will be used. The skeletal and dentoalveolar changes occurring after intrusion of posterior teeth will be assessed by using posteroanterior and lateral cephalometric radiographs. Pre- and post- treatment changes for each group will be evaluated, in addition to the comparison of the post-treatment skeletal and dental changes that occurs between groups.

Conditions

Anterior Open Bite

Keywords

Open bite; Molar intrusion; Temporary anchorage devices

Outcome Measures

Primary Outcomes (1)

• Overbite

  The distance between the incisal edges of upper incisors and the incisal edges of the lower incisors, measured in mm

  This variable will be evaluated twice; T0 before treatment, and T1 at the end of molar intrusion which will be approximately after 7 months

Secondary Outcomes (4)

• Molar intrusion

  This variable will be evaluated twice; T0 before treatment, and T1 at the end of molar intrusion which will be approximately after 7 months

• Mandibular autorotation

  This variable will be evaluated twice; T0 before treatment, and T1 at the end of molar intrusion which will be approximately after 7 months

• Anterior facial height

  This variable will be evaluated twice; T0 before treatment, and T1 at the end of molar intrusion which will be approximately after 7 months

• Change in the anteroposterior position of the point "B"

  This variable will be evaluated twice; T0 before treatment, and T1 at the end of molar intrusion which will be approximately after 7 months

Study Arms (3)

Miniplates + OBA

EXPERIMENTAL

The intrusion of posterior teeth using Miniplates + OBA will be performed. The investigators will apply a modified version of the OBA (Open Bite Appliance), by Erverdi and Usumez, for all patients in upper posterior teeth and miniplates. The miniplates are for Jeil Dual top® anchor system, Jeil medical corporation, #702,kolon science valley 2nd, 811, Guro-Dong, Guro-Gu, Seoul, 152-050, Korea. Tel: 82.2.850.3500. Fax: 82.2.850.3537. homepage: www.jeilmed.co.kr/ E-mail: mktg@jeilmed.co.kr

Device: OBA; Device: Miniplates

Miniscrews + OBA

EXPERIMENTAL

The intrusion of posterior teeth using Miniscrews + OBA will be performed. The investigators will apply a modified version of the OBA (Open Bite Appliance), by Erverdi and Usumez, for all patients in upper posterior teeth and miniscrews. The miniscrews are for Denxy ® dental orthodontic products, Denxy technology co, limited . 404,Lihuabuilding,Furongroad, Changsha, Hunan, China. Tel: 0086-731-89717339. Fax: 0086-731-82237315. Homepage: www.denxy-orthodontic.com/email: DENXYDENTALBOSS@126.COM

Device: OBA; Device: Miniscrews

Only OBA

EXPERIMENTAL

The intrusion of posterior teeth using OBA only will be performed. The investigators will apply a modified version of the OBA (Open Bite Appliance), by Erverdi and Usumez, for all patients in upper posterior teeth only.

Device: OBA

Interventions

OBA DEVICE

The intrusion of posterior teeth using removable appliance "OBA".

Miniplates + OBA; Miniscrews + OBA; Only OBA

Miniplates DEVICE

The intrusion of posterior teeth using temporary anchorage "Miniplates".

Miniplates + OBA

Miniscrews DEVICE

The intrusion of posterior teeth using temporary anchorage "Miniscrews".

Miniscrews + OBA

Eligibility Criteria

• Age: 12 Years - 18 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• Patients with skeletal open bite determined by an increased B angle (angle between the maxillary plane and mandibular plane), the Sum of Bjork and the mandibular plane angle (angle between SN plane and mandibular plane).
• Patients between 12 and 18 years old in permanent dentition stage.
• Negative over-bite of more than a mm
• Class I or Class II skeletal anteroposterior relationship.

You may not qualify if:

• Previous orthodontic treatment.
• Patients with syndromes, clefts, or craniofacial abnormalities.
• Class III skeletal anteroposterior relationship.

Sponsors & Collaborators

• Damascus University: lead

Study Sites (1)

Damascus University

Damascus, 00963, Syria

Location

Related Publications (8)

• Ng J, Major PW, Flores-Mir C. True molar intrusion attained during orthodontic treatment: a systematic review. Am J Orthod Dentofacial Orthop. 2006 Dec;130(6):709-14. doi: 10.1016/j.ajodo.2005.05.049.

  PMID: 17169732 BACKGROUND

• Sugawara J, Baik UB, Umemori M, Takahashi I, Nagasaka H, Kawamura H, Mitani H. Treatment and posttreatment dentoalveolar changes following intrusion of mandibular molars with application of a skeletal anchorage system (SAS) for open bite correction. Int J Adult Orthodon Orthognath Surg. 2002;17(4):243-53.

  PMID: 12592995 BACKGROUND

• Deguchi T, Kurosaka H, Oikawa H, Kuroda S, Takahashi I, Yamashiro T, Takano-Yamamoto T. Comparison of orthodontic treatment outcomes in adults with skeletal open bite between conventional edgewise treatment and implant-anchored orthodontics. Am J Orthod Dentofacial Orthop. 2011 Apr;139(4 Suppl):S60-8. doi: 10.1016/j.ajodo.2009.04.029.

  PMID: 21435540 BACKGROUND

• Akan S, Kocadereli I, Aktas A, Tasar F. Effects of maxillary molar intrusion with zygomatic anchorage on the stomatognathic system in anterior open bite patients. Eur J Orthod. 2013 Feb;35(1):93-102. doi: 10.1093/ejo/cjr081. Epub 2011 Aug 9.

  PMID: 21828357 BACKGROUND

• Xun C, Zeng X, Wang X. Microscrew anchorage in skeletal anterior open-bite treatment. Angle Orthod. 2007 Jan;77(1):47-56. doi: 10.2319/010906-14R.1.

  PMID: 17029531 BACKGROUND

• Erverdi N, Keles A, Nanda R. The use of skeletal anchorage in open bite treatment: a cephalometric evaluation. Angle Orthod. 2004 Jun;74(3):381-90. doi: 10.1043/0003-3219(2004)0742.0.CO;2.

  PMID: 15264651 BACKGROUND

• Hart TR, Cousley RR, Fishman LS, Tallents RH. Dentoskeletal changes following mini-implant molar intrusion in anterior open bite patients. Angle Orthod. 2015 Nov;85(6):941-8. doi: 10.2319/090514-625.1. Epub 2014 Dec 22.

  PMID: 25531420 BACKGROUND

• Kuroda S, Katayama A, Takano-Yamamoto T. Severe anterior open-bite case treated using titanium screw anchorage. Angle Orthod. 2004 Aug;74(4):558-67. doi: 10.1043/0003-3219(2004)0742.0.CO;2.

  PMID: 15387036 BACKGROUND

MeSH Terms

Conditions

Open Bite

Condition Hierarchy (Ancestors)

Malocclusion; Tooth Diseases; Stomatognathic Diseases

Study Officials

• Mohamad Yousef, DDS MSc PhD

  Damascus University

  STUDY CHAIR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 22, 2016
• First Posted: August 12, 2016
• Study Start: January 1, 2016
• Primary Completion: August 1, 2017
• Study Completion: November 1, 2017
• Last Updated: January 3, 2018

Record last verified: 2017-12

Data Sharing

• IPD Sharing: Will not share

Locations

SY (1)