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Evaluation of Occlusal Force Following Rapid Maxillary Expansion Assisted by Piezocision in Different Age Groups

3 september 2026 bijgewerkt door: Abdulmalek Tawfik Saad, Al-Azhar University

Evaluation of Occlusal Force Following Rapid Maxillary Expansion Assisted by Piezocision in Adolescent Versus Young Adult Orthodontic Patients: A Prospective Clinical Study.

The aim of this prospective clinical study is to evaluate and compare the changes in occlusal force distribution using a quantitative digital occlusal analysis system following piezocision-assisted rapid maxillary expansion (RME) in adolescent versus young adult orthodontic patients. The study hypothesis is that piezocision-assisted RME will result in significant changes in occlusal force distribution and that these outcomes may differ between age groups over a 3-month follow-up period.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

This prospective clinical study evaluates the changes in occlusal force distribution in patients with maxillary transverse deficiency undergoing piezocision-assisted rapid maxillary expansion (RME).

Participants aged 14-22 years with permanent dentition requiring rapid maxillary expansion are allocated into two age-based study groups:

Group I (Adolescents): Patients aged 14-16 years. Group II (Young Adults): Patients aged 18-22 years. All participants undergo piezocision-assisted RME. Under local anesthesia, selective vertical micro-incisions are made interproximally on the buccal alveolar bone distal to the canines, first premolars, and second premolars. Corticotomy cuts to a depth of 3 mm into cortical bone are performed using a piezoelectric surgical device. A bonded tooth-borne Hyrax expander is then cemented and activated two quarters per day (0.5 mm of expansion per day) for 11 days. The expander is maintained as a passive retainer for 3 months to allow stabilization and midpalatal suture remodeling. Primary outcomes evaluate percentage changes in occlusal force distribution at maximum intercuspation across dental arch segments (Anterior vs. Posterior and Right vs. Left), as well as occlusion time and disclusion time during excursive movements, using quantitative digital occlusal force analysis(T-Scan III, Tekscan Inc., Norwood, MA, USA)). Secondary outcomes assess patient-reported pain and discomfort levels at defined time intervals.

Studietype

Ingrijpend

Inschrijving (Geschat)

16

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Egypte
    • Naser City
      • Cairo, Naser City, Egypte, 11751
        • Department of Orthodontics, Faculty of Dental Medicine, Al-Azhar University
        • Contact:
        • Contact:
          • Akram Alqadami, Ph.D. Holder
          • Telefoonnummer: +966561010654

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Kind
  • Volwassen

Accepteert gezonde vrijwilligers

Nee

Beschrijving

Inclusion Criteria:

1 - Patients with transverse maxillary deficiency. 2. Age range 14-22 years 3. Permanent dentition stage. 4. Good general and oral health.

Exclusion Criteria:

  1. Craniofacial anomalies or syndromes.
  2. History of orthognathic surgery.
  3. Periodontal disease or significant bone loss.
  4. Systemic diseases affecting bone metabolism.
  5. Previous orthodontic treatment.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Group I: Adolescents
Adolescent patients aged 14-16 years with maxillary transverse deficiency receiving piezocision-assisted rapid maxillary expansion (RME).
Procedure: Piezocision-Assisted Rapid Maxillary Expansion
Under local anesthesia using Articaine with 1:100,000 Epinephrine, selective vertical micro-incisions are made interproximally through the attached gingiva to the maximum extent possible using a 15c scalpel blade via a flapless technique, extending through the periosteum to reach the alveolar bone. Corticotomy cuts are performed using a piezoelectric surgical device with a BS1 Slim II tip to a depth of 3 mm into cortical bone, initiated 2 mm apical to alveolar crest and safely positioned between adjacent tooth roots to avoid iatrogenic injury. Immediately following surgery, activation of a bonded tooth-borne Hyrax expander commences at a rate of one activation (quarter turn) twice daily (0.5 mm/day) for 11 days, followed by a 3-month passive retention phase for suture remodeling.
Andere namen:
  • Piezocision-Assisted RME
  • Piezoelectric Corticotomy
  • Piezo-Assisted Maxillary Expansion
  • Piezocision-Assisted Rapid Palatal Expansion
Diagnostische toets: T-Scan Quantitative Digital Occlusal Force Analysis
Quantitative digital measurement of occlusal force parameters using the T-Scan III system (Tekscan, Inc., Norwood, MA, USA) with HD sensors. Static parameters assessed at Maximum Intercuspation (MIC) include: (1) percentage of force distribution between anterior and posterior teeth, and (2) percentage of force symmetry between right and left arch sides. Dynamic parameters assessed include: (1) Occlusion Time (OT) measured from initial tooth contact to MIC, and (2) Disclusion Time (DT) recorded during right, left, and protrusive excursive movements.
Andere namen:
  • T-Scan Digital Occlusal System
  • Tekscan Occlusal Force Analysis
  • Digital Occlusal Analysis
  • Digital Occlusal Force Measurement
Actieve vergelijker: Group II: Young Adults
Young adult patients aged 18-22 years with maxillary transverse deficiency receiving piezocision-assisted rapid maxillary expansion (RME).
Procedure: Piezocision-Assisted Rapid Maxillary Expansion
Under local anesthesia using Articaine with 1:100,000 Epinephrine, selective vertical micro-incisions are made interproximally through the attached gingiva to the maximum extent possible using a 15c scalpel blade via a flapless technique, extending through the periosteum to reach the alveolar bone. Corticotomy cuts are performed using a piezoelectric surgical device with a BS1 Slim II tip to a depth of 3 mm into cortical bone, initiated 2 mm apical to alveolar crest and safely positioned between adjacent tooth roots to avoid iatrogenic injury. Immediately following surgery, activation of a bonded tooth-borne Hyrax expander commences at a rate of one activation (quarter turn) twice daily (0.5 mm/day) for 11 days, followed by a 3-month passive retention phase for suture remodeling.
Andere namen:
  • Piezocision-Assisted RME
  • Piezoelectric Corticotomy
  • Piezo-Assisted Maxillary Expansion
  • Piezocision-Assisted Rapid Palatal Expansion
Diagnostische toets: T-Scan Quantitative Digital Occlusal Force Analysis
Quantitative digital measurement of occlusal force parameters using the T-Scan III system (Tekscan, Inc., Norwood, MA, USA) with HD sensors. Static parameters assessed at Maximum Intercuspation (MIC) include: (1) percentage of force distribution between anterior and posterior teeth, and (2) percentage of force symmetry between right and left arch sides. Dynamic parameters assessed include: (1) Occlusion Time (OT) measured from initial tooth contact to MIC, and (2) Disclusion Time (DT) recorded during right, left, and protrusive excursive movements.
Andere namen:
  • T-Scan Digital Occlusal System
  • Tekscan Occlusal Force Analysis
  • Digital Occlusal Analysis
  • Digital Occlusal Force Measurement

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Static Occlusal Force Distribution and Symmetry
Tijdsspanne: Baseline (T0: Pre-expansion) and 3-month post-expansion (T1).
Percentage of occlusal force distribution between anterior/posterior segments and percentage of force symmetry between right and left sides measured at Maximum Intercuspation (MIC) using T-Scan III.
Baseline (T0: Pre-expansion) and 3-month post-expansion (T1).
Dynamic Occlusal Parameters (Occlusion and Disclusion Times)
Tijdsspanne: Baseline (T0: Pre-expansion) and 3-month post-expansion (T1).
Occlusion Time (OT in seconds, measured from initial tooth contact to Maximum Intercuspation [MIC]) and Disclusion Time (DT in seconds, measured from MIC during lateral and protrusive excursive movements until all posterior teeth completely disclude).
Baseline (T0: Pre-expansion) and 3-month post-expansion (T1).

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Postoperative Pain and Discomfort
Tijdsspanne: Day 3 (first follow-up), Day 7 (second follow-up), and Day 11 (end of active expansion phase).
Self-reported pain intensity evaluated using a 10-point Visual Analog Scale (VAS), ranging from 0 (no pain) to 10 (worst imaginable pain).
Day 3 (first follow-up), Day 7 (second follow-up), and Day 11 (end of active expansion phase).

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Al-Azhar University

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

1 oktober 2026

Primaire voltooiing (Geschat)

1 december 2027

Studie voltooiing (Geschat)

1 juni 2028

Studieregistratiedata

Eerst ingediend

3 september 2026

Eerst ingediend dat voldeed aan de QC-criteria

3 september 2026

Eerst geplaatst (Werkelijk)

9 september 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

9 september 2026

Laatste update ingediend die voldeed aan QC-criteria

3 september 2026

Laatst geverifieerd

1 september 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Andere studie-ID-nummers

  • 1596/588

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Beschrijving IPD-plan

Individual participant data will not be made publicly available to protect participant privacy and confidentiality.

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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