419844

Effect of Therapeutic Extraction on the Skeletal, Dental and Soft Tissue Relations. A Retrospective Cohort Study.

Article

Last updated: 09 Apr 2025

Subjects

-

Tags

Oral and Maxillofacial Radiology
Orthodontics

Abstract

Objective: Therapeutic extraction to treat various malocclusion cases is frequently used in orthodontic treatment plans. The aim of this retrospective study was to assess and compare the effects of four first premolar extraction, upper first premolar extraction and non-extraction treatment plans on the anteroposterior and vertical skeletal relations, as well as their effects on the facial soft tissues. Materials and Methods: Lateral cephalograms of 75 patients who received a non-extraction treatment plan (GP I), four first premolar extractions plan (GP II) and upper first premolar extraction plan (GP III) were selected. Each group comprised 25 pre and post lateral cephalograms of skeletal class 2 hyperdivergent cases. A number of skeletal and dental anteroposterior, vertical and soft tissue parameters were measured using WebCeph online software. Comparison between the three groups was done using Kruskal-Wallis test followed by Dunn's multiple comparisons test. Results: There was insignificant change in the mandibular plane inclination and nasolabial angle across the three groups. In GP III, a significant decrease was recorded in SNA and ANB angles of 1.970 ± 3.74 and 1.10± 2.17 respectively. Sagitally, insignificant differences were found in the SNA and SNB angles across the three groups, with similar change (1.50 ± 0.57) in ANB angle in both GP I and GP III. Both extraction groups showed more flattening of the upper and lower lips compared to the non-extraction group. Conclusions: Therapeutic extraction of the first premolars had limited effects on the sagittal, anteroposterior and soft tissue relations.

DOI

10.21608/edj.2024.337454.3266

Keywords

therapeutic extraction, premolars, Lateral cephalometry, vertical dimension

Authors

First Name

Nouran

Last Name

Seifeldin

MiddleName

Fouad

Affiliation

Lecturer of Orthodontics, Department of Orthodontics, Faculty of Dentistry, Cairo University.

Email

nouran.fouad@dentistry.cu.edu.eg

City

Cairo

Orcid

0000-0003-2331-1963

First Name

Ahmed

Last Name

Eltimamy

MiddleName

M

Affiliation

Lecturer of Radiology, Department of Radiology, Faculty of Dentistry, Cairo University

Email

ahmed.medhat@dentistry.cu.edu.eg

City

-

Orcid

0009-0001-1121-0703

First Name

Nada

Last Name

Elzawahry

MiddleName

Omar

Affiliation

Lecturer of Orthodontics, Department of Orthodontics, Faculty of Dentistry, Cairo University.

Email

nada.elzawahry@dentistry.cu.edu.eg

City

cairo

Orcid

0000-0001-7764-8225

First Name

Nora

Last Name

Al Abbady

MiddleName

Aly

Affiliation

Lecturer of Radiology, Department of Radiology, Faculty of Dentistry, Cairo University

Email

nora.alabady@dentistry.cu.edu.eg

City

cairo

Orcid

0000-0001-8757-8152

Volume

71

Article Issue

2

Related Issue

54779

Issue Date

2025-04-01

Receive Date

2024-11-18

Publish Date

2025-04-01

Page Start

985

Page End

996

Print ISSN

0070-9484

Online ISSN

2090-2360

Link

https://edj.journals.ekb.eg/article_419844.html

Detail API

http://journals.ekb.eg?_action=service&article_code=419844

Order

419,844

Type

Original Article

Type Code

254

Publication Type

Journal

Publication Title

Egyptian Dental Journal

Publication Link

https://edj.journals.ekb.eg/

MainTitle

Effect of Therapeutic Extraction on the Skeletal, Dental and Soft Tissue Relations. A Retrospective Cohort Study.

Details

Type

Article

Created At

09 Apr 2025