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

3. september 2026 opdateret af: 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.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

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.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

16

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

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

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Barn
  • Voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

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.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Group I: Adolescents
Adolescent patients aged 14-16 years with maxillary transverse deficiency receiving piezocision-assisted rapid maxillary expansion (RME).
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.
Andre navne:
  • Piezocision-Assisted RME
  • Piezoelectric Corticotomy
  • Piezo-Assisted Maxillary Expansion
  • Piezocision-Assisted Rapid Palatal Expansion
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.
Andre navne:
  • T-Scan Digital Occlusal System
  • Tekscan Occlusal Force Analysis
  • Digital Occlusal Analysis
  • Digital Occlusal Force Measurement
Aktiv komparator: Group II: Young Adults
Young adult patients aged 18-22 years with maxillary transverse deficiency receiving piezocision-assisted rapid maxillary expansion (RME).
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.
Andre navne:
  • Piezocision-Assisted RME
  • Piezoelectric Corticotomy
  • Piezo-Assisted Maxillary Expansion
  • Piezocision-Assisted Rapid Palatal Expansion
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.
Andre navne:
  • T-Scan Digital Occlusal System
  • Tekscan Occlusal Force Analysis
  • Digital Occlusal Analysis
  • Digital Occlusal Force Measurement

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Static Occlusal Force Distribution and Symmetry
Tidsramme: 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)
Tidsramme: 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).

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Postoperative Pain and Discomfort
Tidsramme: 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).

Samarbejdspartnere og efterforskere

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Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. oktober 2026

Primær færdiggørelse (Anslået)

1. december 2027

Studieafslutning (Anslået)

1. juni 2028

Datoer for studieregistrering

Først indsendt

3. september 2026

Først indsendt, der opfyldte QC-kriterier

3. september 2026

Først opslået (Faktiske)

9. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

9. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

3. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 1596/588

Plan for individuelle deltagerdata (IPD)

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IPD-planbeskrivelse

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

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