Deep Bite Correction Using Auxiliary Intrusion Cantilevers With Initial Archwires in Adolescents

NCT05654558 | Completed

• 1 other identifier: 0049-08/2019
• Study Type: interventional
• Target: 27
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study was to determine the effect of auxiliary intrusion cantilevers used with resilient archwires during the leveling and alignment phase in intruding lower incisors.

Conditions

Deep Overbite

Outcome Measures

Primary Outcomes (7)

• Overbite

  Distance between incisal edges of upper and lower incisors measured on lateral cephalometric x-rays

  six months

• True incisor intrusion

  Perpendicular distance between the center of resistance of mandibular central incisor and the mandibular plane measured on lateral cephalometric x-rays

  six months

• Proclination of lower incisors

  Angle formed by the long axis of mandibular central incisor and mandibular plane measured on lateral cephalometric x-rays

  six months

• Lower incisor intrusion and proclination

  Perpendicular distance between the incisal edge of the lower central incisor and mandibular plane measured on lateral cephalometric x-rays

  six months

• Lower incisor intrusion

  Perpendicular distance between the apex of the lower central incisor and mandibular plane measured on lateral cephalometric x-rays

  six months

• Extrusion of lower first molar

  Perpendicular distance between the mesio-buccal cusp tip of the lower first molar and mandibular plane measured on lateral cephalometric x-rays

  six months

• Distal tip of lower first molar

  Angle formed between the long axis of lower 1st molar and mandibular plane measured on lateral cephalometric x-rays

  six months

Secondary Outcomes (4)

• Depth of curve of Spee

  six months

• Depth of gingival sulcus

  six months

• Width of keratinized gingiva

  six months

• Root resorption of lower incisors

  six months

Study Arms (2)

Auxiliary intrusion cantilevers

EXPERIMENTAL

Patients received a full set of 0.022- inch slot brackets (Mini 2000, Ormco) with Roth prescription. Lower first molars received double tubed bands while 2nd molars received single bondable tubes. Leveling and alignment phase then started with 0.014 inch NiTi wires engaging all teeth and synched behind 2nd molars. Two 0.017" x 0.025" TMA (Ormco) sectional wires were attached to auxiliary tubes on 1st molars with tip back bends mesial to the molars and attached with hooks distal to lateral incisors on top of basal leveling arch wire. Amount of intrusive force was measured to range between 20 and 40 grams per side. Basal leveling arches were upgraded whenever needed. All patients were assessed after 6 months of treatment.

Device: Auxiliary cantilever intrusion arches on initial archwires

Routine leveling and alignment

ACTIVE COMPARATOR

Patients received a full set of 0.022- inch slot brackets (Mini 2000, Ormco) with Roth prescription, 1st and 2nd molars received tubes or bands according to each patient's further needs Lower arch was leveled and aligned with sequential wires starting with 14 NiTi and upgraded when needed. All patients were assessed after 6 months of treatment.

Device: Routine leveling and alignment

Interventions

Auxiliary cantilever intrusion arches on initial archwires DEVICE

Patients received a full set of 0.022- inch slot brackets (Mini 2000, Ormco) with Roth prescription. Lower first molars received double tubed bands while 2nd molars received single bondable tubes. Leveling and alignment phase then started with 0.014 inch NiTi wires engaging all teeth and synched behind 2nd molars. Two 0.017" x 0.025" TMA (Ormco) sectional wires were attached to auxiliary tubes on 1st molars with tip back bends mesial to the molars and attached with hooks distal to lateral incisors on top of basal leveling arch wire. Amount of intrusive force was measured to range between 20 and 40 grams per side. Basal leveling arches were upgraded whenever needed. All patients were assessed after 6 months of treatment.

Auxiliary intrusion cantilevers

Routine leveling and alignment DEVICE

Patients received a full set of 0.022- inch slot brackets (Mini 2000, Ormco) with Roth prescription, 1st and 2nd molars received tubes or bands according to each patient's further needs Lower arch was leveled and aligned with sequential wires starting with 14 NiTi and upgraded when needed. All patients were assessed after 6 months of treatment.

Also known as: Relative Intrusion

Routine leveling and alignment

Eligibility Criteria

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

You may qualify if:

• Permanent dentition present except for third molars
• No history of previous orthodontic treatment.
• Class I or II malocclusion with minimal or no lower anterior crowding (\<3 mm)
• Excessive overbite (\>3 mm).

You may not qualify if:

• Syndromic patients as well as individuals with skeletal asymmetry
• Endodontically treated or periodontally involved loweranterior teeth.
• Need for tooth extraction in the lower arch.
• Agenesis (except for third molars)
• Any kind of tooth/root shape anomaly

Sponsors & Collaborators

• Alexandria University: lead

Study Sites (1)

Faculty of Dentistry, Alexandria University

Alexandria, 21527, Egypt

Location

MeSH Terms

Conditions

Overbite

Condition Hierarchy (Ancestors)

Malocclusion, Angle Class II; Malocclusion; Tooth Diseases; Stomatognathic Diseases

Study Officials

• Mona Elmaghraby, BDS

  Faculty of Dentistry, Alexandria University, Egypt

  PRINCIPAL INVESTIGATOR

• Hanan Ismail, PhD

  Faculty of Dentistry, Alexandria University, Egypt

  STUDY CHAIR

• Hassan Kassem, PhD

  Faculty of Dentistry, Alexandria University, Egypt

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: MSc candidate, Orthodontics Department, Faculty of Dentistry, Alexandria University

Study Record Dates

• First Submitted: December 8, 2022
• First Posted: December 16, 2022
• Study Start: September 12, 2020
• Primary Completion: June 15, 2022
• Study Completion: June 30, 2022
• Last Updated: December 16, 2022

Record last verified: 2022-12

Locations

EG (1)