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

NCT ID: NCT07253337

Last Updated: 2025-11-28

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 16 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-01-01
• Study Completion Date: 2026-07-01

Brief Summary

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.

Detailed Description

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.

Conditions

Effect of Premolars Extraction on Bite Force

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: OTHER
• Blinding Strategy: NONE

Study Groups

Patients with premoalrs extraction

Patients who will undergo 4 first premolars extraction Patients who will undergo upper first premolars extraction

Group Type: EXPERIMENTAL

T-scan analysis for bite force distribution

Intervention Type: OTHER

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

Interventions

T-scan analysis for bite force distribution

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

Intervention Type: OTHER

Eligibility Criteria

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.

• Minimum Eligible Age: 14 Years
• Maximum Eligible Age: 25 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Suez Canal University

OTHER

Sponsor Role: lead

Responsible Party

rim fathalla

Rim Mohamed Fathalla Eissa

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Rim M Fathalla, PhD of Orthodontics

Role: PRINCIPAL_INVESTIGATOR

Suez Canal University

Locations

Suez Canal University

Ismailia, , Egypt

Countries

Egypt

References

Rohrle O, Saini H, Ackland DC. Occlusal loading during biting from an experimental and simulation point of view. Dent Mater. 2018 Jan;34(1):58-68. doi: 10.1016/j.dental.2017.09.005. Epub 2017 Oct 7.

Reference Type: RESULT

PMID: 29017762 (View on PubMed)

Sharma A, Rahul GR, Poduval ST, Shetty K, Gupta B, Rajora V. History of materials used for recording static and dynamic occlusal contact marks: a literature review. J Clin Exp Dent. 2013 Feb 1;5(1):e48-53. doi: 10.4317/jced.50680. eCollection 2013 Feb 1.

Reference Type: RESULT

PMID: 24455051 (View on PubMed)

Haydar B, Ciger S, Saatci P. Occlusal contact changes after the active phase of orthodontic treatment. Am J Orthod Dentofacial Orthop. 1992 Jul;102(1):22-8. doi: 10.1016/0889-5406(92)70011-x.

Reference Type: RESULT

PMID: 1626529 (View on PubMed)

Sultana MH, Yamada K, Hanada K. Changes in occlusal force and occlusal contact area after active orthodontic treatment: a pilot study using pressure-sensitive sheets. J Oral Rehabil. 2002 May;29(5):484-91. doi: 10.1046/j.1365-2842.2002.00849.x.

Reference Type: RESULT

PMID: 12028498 (View on PubMed)

Bottger H, Borgstedt T. [Computer-supported analysis of occlusion using T-Scan system. First report]. ZWR. 1989 Jul;98(7):584-5. German.

Reference Type: RESULT

PMID: 2700857 (View on PubMed)

Floystrand F, Kleven E, Oilo G. A novel miniature bite force recorder and its clinical application. Acta Odontol Scand. 1982;40(4):209-14. doi: 10.3109/00016358209019814.

Reference Type: RESULT

PMID: 6958166 (View on PubMed)

Helkimo E, Carlsson GE, Helkimo M. Bite force and state of dentition. Acta Odontol Scand. 1977;35(6):297-303. doi: 10.3109/00016357709064128.

Reference Type: RESULT

PMID: 271452 (View on PubMed)

Other Identifiers

1041/2025

Identifier Type: -

Identifier Source: org_study_id