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NCT Number: NCT07253337

Analysis of Bite Force Distribution After Premolars Extraction by Using T-scan Analysis System

This study aims to assess the effect of first premolars extraction during orthodontic treatment bite force during the excursive mandibular movements using a digital occlusal analysis system.

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This study is active but is not currently recruiting participants.

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Key information

Conditions

Effect of Premolars Extraction on Bite Force

Age range

14 year–25 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Suez Canal University

Ismailia, Egypt

About this study

The study sample consists of 16 patients, aged 14-25 years-old, who will be presented at the outpatient dental clinics and are seeking orthodontic treatment to relief crowding or to treat their proclined teeth. A written consent will be signed by them or their parents or caregivers after their approval to participate in this research study. The inclusion criteria are : age group from14 to 25 years, full complement of permanent teeth (excluding third molars) and the case analysis revealed extraction of their first premolars to relieve the malocclusion problem. As for the exclusion criteria; they include patients with previous Orthodontic/ Orthopedic/ Orthognathic surgical treatment, patients with history of trauma or obvious/ gross facial asymmetry.

Patients sampling:

Patients will be divided into two groups , each group includes eight patients according to the proposed treatment plan:

  • Group I : Patients who will be treated with the extraction of their upper and lower first premolars .
  • Group II : Patients who will be treated with extraction of their upper first premolars.

Methods:

Records will be taken on patients selected before initiating any orthodontic treatment to register the occlusal force distribution on teeth during the different excursive mandibular movements (right, left and protrusive mandibular movements) using the T-scan III system before orthodontic treatment and extraction of teeth .

  • Orthodontic treatment of patients will be undertaken.
  • After finishing the patients' treatment , the T-scan III system is used to measure the bite force distribution during mandibular excursive movements immediately after brackets debonding .
  • The bite force measurements taken before and after treatment will be compared with each other .

Statistical Analysis:

In the current study, observations and all numerical data will be collected for statistical analysis using SPSS version 29 for Windows.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age group from14 to 25 years
  • Full complement of permanent teeth (excluding third molars)
  • The case analysis revealed extraction of their first premolars to relieve the malocclusion problem

Exclusion criteria

  • Patients with previous Orthodontic/ Orthopedic/ Orthognathic surgical treatment
  • Patients with history of trauma or obvious/ gross facial asymmetry.

Treatment and study plan

T-scan analysis for bite force distribution

Other

T-scan analysis for bite force distribution for patients before and after the end of the orthodontic treatment

Primary outcomes

  1. Distribution of bite force during excursive mandibular movements

    Time frame: 12-18 months

    Distribution of bite force during excursive mandibular movements before and after the end of the orthodontic treatment

Secondary outcomes

  1. Effect of premolars extraction on distribution of bite force during mandibular excursive movements

    Time frame: 12-18 months

    Effect of first premolars extraction on distribution of bite force during mandibular excursive movements using T-scan occlusal analysis system and if the extraction pattern is acontributing factor in the bite force

Sponsors and collaborators

Lead sponsor

Suez Canal University

Other

Registry information

Official study title

Effect of First Premolars Extraction During Orthodontic Treatment on Distribution of Bite Force During the Mandibular Excursive Movements: A Prospective Clinical Trial Using T-scan Occlusal Analysis System.

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Nov 28, 2025
Registry last updated
Nov 28, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.