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Study Protocol

Comparative analysis for variation of skeletal and dental parameters in bilateral cleft palate in central India population – A Nemoceph study

[version 1; peer review: 2 approved with reservations, 1 not approved]
PUBLISHED 21 Aug 2023
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This article is included in the Datta Meghe Institute of Higher Education and Research collection.

Abstract

Introduction: An area of dentistry called orthodontics focuses on repositioning crooked teeth and regulating facial development. Orthodontists and oral surgeons use cephalometric analysis as a planning tool for their patient care. Conventional film-based radiography equipment has been replaced with direct digital devices, which have advantages such as reduced patient radiation exposure, immediate radiographic image generation, the removal of the need for darkrooms, and simple image sharing. The second-most typical craniofacial abnormality that results in birth abnormalities is cleft lip and palate. Such patients frequently do not receive cephalometric testing because of their hypoplastic growth and limited development. Research is needed to help plan a standard treatment regimen, perform orthognathic operations, and use a low-radiation analysis technique.
Objectives: To evaluate skeletal and dental parameters for cleft lip and palate using Down analysis, Steiner's analysis, and Tweed's analysis using Nemoceph.
Methods: Around 50 cases from cleft lip and palate and non-cleft lip and palate will be selected from the orthodontics department of Sharad Pawar Dental College and Hospital. Steiner's, Down's, and Tweed's analyses will be evaluated using Nemoceph. Further analysis will be conducted using the observational data from the readings. There will be millimetre-based measurements made. Comparative analysis will be done with one-way ANOVA and post hoc statistics and regression analysis will be done for association of demographic variables.
Expected outcomes: This study will use the nasion as a stable landmark to evaluate point A in cleft lip and palate patients, making it easier to perform normal cephalometric analysis. This will enable the evaluation of the probable position of point A for performing cephalometric analysis in orthodontics.

Keywords

Cleft Lip & Palate, Cephalometric analysis, Down’s analysis, Steiner’s analysis, Tweed’s analysis, Nemoceph, Orthognathic surgery, Point A

Introduction

Orthodontics is a branch of dentistry that not only deals with correcting misaligned teeth but also modifying facial growth and is a guide to reconstructing the architecture of the face.1

Orthodontists and oral surgeons can also use cephalometric analysis as a tool for arranging their patient’s care.

One of the primary procedures in every orthodontic facility is the acquisition, tracing, and interpretation of cephalometric head films or radiographs. Cephalometry is a tool that orthodontics utilizes to aid in diagnostics and comprehensive treatment planning. In comparison to conventional film-based equipment, these devices have several benefits, which involve less radiation exposure to the patient, immediate production of radiographic images, the removal of the need for darkrooms, associated costs and time for development, storage, and handling, and ease of image sharing with the appropriate professionals.2

The Steiner analysis and the Downs analysis are two of the more widely utilized methods of analysis in orthodontics.3

The second-most common type of craniofacial defect known to cause birth deformities is cleft lip and palate (CLP) which is known to be brought about by varying factors, including smoking, and alcohol consumption during pregnancy. Feeding issues, speech issues, hearing issues and recurrent ear infections can arise from such illnesses.4,5

Maxillae abnormalities are among the abnormal characteristics present in people with craniofacial malformations such as CLP. This reduces the precision of the data because it is challenging to locate specific landmarks on cephalometric radiography. Finding the “Gonion,” “point A,” or points connected to the maxillary incisor pairs of landmarks can be particularly challenging.68

Patients with CLP frequently do not undergo cephalometric analysis since it is challenging to quantify the landmarks due to their hypoplastic maxillae and constrained growth. It has been found that patients who inquire about the necessity of a cephalogram are unable to get such an analysis.9

Very few studies have used cephalometric analysis due to the limited availability of sample data, prospective data, difficult treatment protocols, lack of comprehension, and lack of system development for cleft patients. Therefore, research is essential because it will aid in developing a standard treatment plan, carrying out orthognathic procedures, and employing a low-radiation analysis method.

Aim

To assess the reliability of Down’s analysis, Steiner’s analysis, and Tweed’s analysis in bilateral CLP in a central Indian population using lateral cephalogram.

Objectives

  • 1. To evaluate skeletal and dental parameters for CLP using Down’s analysis, Steiner’s analysis, and Tweed’s analysis using Nemoceph.

  • 2. To compare skeletal and dental parameters for CLP using Down’s analysis, Steiner’s analysis, and Tweed’s analysis with non-CLCP patients using Nemoceph.

Methods

The study design is a simple cross-sectional study and analytical study. The patients for the study will be selected from randomized control trails. A complete clinical examination will be done followed by case history, impression taking, model analysis, and radiographs such as lateral cephalograms. We are able to categorise the malocclusion into classes I, II, and III based on Angle’s malocclusion.

This study will employ nasion as one of the few consistent landmarks to establish the value for point A. This will support cephalometric study in patients with cleft lip and palate. On the contrary, the following mentioned modifiers can influence the outcomes of the study which are: patients with vertical and horizontal development patterns, non-syndromic instances such as isolated cleft lips, and patients with Angle’s class II and III subdivision. Patients undergoing presurgical nasoalveolar moulding (PNAM) (a non-surgical method of reshaping the alveolus, lips, and nostrils before primary cleft lip and palate surgery), and patients using chin cup facemask and headgear therapy during mixed dentition period are potential confounders of the study.

Ethical considerations

  • 1. The research proposal has been approved by the ‘Institutional Research Ethics Committee of Datta Meghe Institute of Higher Education and Research, Deemed University’ Ref No- DMIHER (DU)/IEC/2023/705 approved on 15/02/2023.

  • 2. Informed written consent will be obtained from all the participants.

Setting and study design

The study will be carried out at Sharad Pawar DMIHER, Sawangi (M), Wardha, following approval from the ‘Institutional Research Ethics Committee of Datta Meghe Institute of Higher Education and Research, Deemed University’. Informed written consent will be obtained from all the participants.

The patients will be chosen using random sampling method from the Orthodontic Department’s Smile Train Outpatient Department (OPD). Around 50 patients will be invited to participate in the study based on the inclusion and exclusion criteria.

The cephalometric analysis and landmark recognition will be performed on a laptop using a mouse-controlled cursor. The landmarks will be notes and Down’s analysis, Steiner’s analysis, and Tweed’s analysis will be traced and measured by the same investigation to avoid interobserver errors. For examination, a proprietary programme called Nemoceph (version no. 8) will be employed. Open-access alternatives that can perform the equivalent function include Cephalopoint, Cephninja, and Oneceph. The photos will be saved in JPEG and PDF formats with a maximum resolution setting of 200 dpi.10

Further analysis will be conducted using the observational data from the readings. There will be millimeter-based measurements made. Once entered, these readings will appear on a Microsoft Excel page (version 2019 16.0.6742.2048).

The magnitude of competence and social support will be expressed in percentages along with a 95% confidence interval. Comparative analysis will be done with one-way ANOVA and post hoc statistics and regression analysis will be done for association of demographic variables.

Inclusion criteria

  • 1. Data regarding the cases will be evaluated for the age group 10–18 years.

  • 2. Patients with maxillary deficiency in class I and III skeletal patients.

Exclusion criteria

  • 1. Orthodontic treatment used in CLP instances.

  • 2. Syndromic cases.

Data sources/measurement

To conduct the study, 50 digital lateral cephalograms of prospective orthodontic patients who reported to the outpatient department (OPD) of the Department of Orthodontics were taken. The cases that have visited the departmental OPD and smile train unit will be chosen based on the criteria for inclusion.

Digital cephalograms were taken on Cephalostat machine (Planmeca Proline CC panoramic Xay, Planmeca OY Helsinki Finland). Kodak film size 8×10 inches (18×24 cms) and cassettes with in-built intensifying screen speed 400 were used.

Bias

To reduce measurement error and provide an unbiased assessment will be done by the same examiner every two weeks.

Study size

Using Fisher’s arctanh transformation

Cr=12loge1+r1r
Cr=12loge1+r1r
N=Z1α2+Z1β12loge1+r1r2+3

ANS-PNSC3VSNUNGL

0.128=12log1+0.9010.90=0.6393
Zα=1.96
Zβ=0.84
N=1.96+0.840.63932+3=22.17

N = 25 samples needed in the study

Statistical methods

The statistical methods employed in this study include the Student’s t-test and correlation analysis. These techniques will be used to analyze the data and uncover a pattern between cleft lip and palate patients and non-cleft lip and palate patients. The study’s approach is influenced by the research conducted by Philine H. Doberschutz.11 The formula for analysis is referenced from Lachin (1981), as documented in Controlled Clinical Trials.12 For the purpose of data analysis, the study will utilize SPSS version 27.0 (RRID: SCR_002865), a widely recognized software tool in the field of statistics. This software will aid in processing and interpreting the collected data effectively.

Dissemination

Due to the abnormal anatomy of the patients with bilateral cleft lip and palate it is difficult to locate anatomic landmarks to study skeletal and dental parameters, and hence with this study, we will be able to evaluate point A with the help of stable landmarks which will be evaluated from the nasion. We will be able to determine the likely position of point A for performing cephalometric analysis in orthodontics. Evaluation of point A in CLP patients is challenging due to growth deformity in the maxilla, making it difficult to perform the normal cephalometric analysis.

Discussion

Cephalometry plays a vital role in deciding the diagnosis for the patient.13

Due to restrictions in the utility of 2D cephalometry, the world is shifting to a digital mode of intervention. Digital cephalometry reduces intra and interobserver variations giving more accurate data for the study. CLP patients have an underdeveloped maxilla and due to this, we are not able to locate landmarks for determining the analysis.14 Ege Doğan et al. (2020), stated that the objective of his study’s was to assess the preciseness of cephalometric measurement data using lateral cephalometry in individuals with CLP present unilaterally.15 It is crucial to pay close attention to the marking of the anterior nasal spine, point A, nasion, sub nasal, and upper 1 points that are present in cleft regions. Reliability restrictions are essential in cephalometric studies of patients with CLP to guide doctors.16 Due to hypoplastic maxilla, we are unable to locate point A and the anterior nasal spine, and these points aid in assessing the growth pattern and malocclusion of the patients.17

Catharina A.M. Bongaarts et al. stated that the landmarks point A, anterior nasal spine, and posterior nasal spine can be difficult to identify in unilateral cleft lip and palate patients with embryonic germs in the anterior maxilla, but no more accurate anatomical points were identified in this investigation. Caution should be used when interpreting cephalometric tests in unilateral CLP patients that use anterior nasal spine, posterior nasal spine, and point A.18

Manual Yudovich et al. (2015) described the importance of the cephalometric study as that it can help to optimize future treatment protocols, which helps to achieve the greatest potential function and aesthetics to raise the patient’s quality of life.19

As a result, a study was developed to evaluate the dental and skeletal characteristics of people with and without clefts to relocate to point A.

Study status

Not started yet.

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Rawat S, Jadhav V, Madhu PP et al. Comparative analysis for variation of skeletal and dental parameters in bilateral cleft palate in central India population – A Nemoceph study [version 1; peer review: 2 approved with reservations, 1 not approved]. F1000Research 2023, 12:1009 (https://doi.org/10.12688/f1000research.135116.1)
NOTE: If applicable, it is important to ensure the information in square brackets after the title is included in all citations of this article.
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Open Peer Review

Current Reviewer Status: ?
Key to Reviewer Statuses VIEW
ApprovedThe paper is scientifically sound in its current form and only minor, if any, improvements are suggested
Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit.
Not approvedFundamental flaws in the paper seriously undermine the findings and conclusions
Version 1
VERSION 1
PUBLISHED 21 Aug 2023
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Reviewer Report 30 Sep 2024
Shreyasi Tiwari, Meenakshi Mission Hospital & Research Centre, Madurai, India 
Approved with Reservations
VIEWS 6
STUDY TITLE: Are the study subjects bilateral cleft palate or bilateral cleft lip & palate patients?

ABSTRACT:
  • The first sentence in the abstract introduction can be better framed. Please refrain from using
... Continue reading
CITE
CITE
HOW TO CITE THIS REPORT
Tiwari S. Reviewer Report For: Comparative analysis for variation of skeletal and dental parameters in bilateral cleft palate in central India population – A Nemoceph study [version 1; peer review: 2 approved with reservations, 1 not approved]. F1000Research 2023, 12:1009 (https://doi.org/10.5256/f1000research.148219.r321968)
NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article.
Views
5
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Reviewer Report 25 Sep 2024
Marcela Scarpa, Plastic Surgery, Faculdade de Medicina do ABC, Santo André, São Paulo, Brazil 
Not Approved
VIEWS 5
1. In the received work, there are some conceptual errors:
  - Cleft lip and palate are the most common congenital facial defects (present in 1:650 live births) and the second most prevalent congenital defect (only less common than ... Continue reading
CITE
CITE
HOW TO CITE THIS REPORT
Scarpa M. Reviewer Report For: Comparative analysis for variation of skeletal and dental parameters in bilateral cleft palate in central India population – A Nemoceph study [version 1; peer review: 2 approved with reservations, 1 not approved]. F1000Research 2023, 12:1009 (https://doi.org/10.5256/f1000research.148219.r321965)
NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article.
Views
28
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Reviewer Report 22 Feb 2024
Mohammad Abdelhamid, Department of Oral and Maxillofacial Surgery, Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Mansoura, Dakahlia, Egypt 
Approved with Reservations
VIEWS 28
Dear authors,
Thanks for submitting this study protocol to F1000Research.
The study within hands is a cross-sectional analytical study that is proposed to assess the reliability of a software program; Nemoceph, in assessing the variation of skeletal and ... Continue reading
CITE
CITE
HOW TO CITE THIS REPORT
Abdelhamid M. Reviewer Report For: Comparative analysis for variation of skeletal and dental parameters in bilateral cleft palate in central India population – A Nemoceph study [version 1; peer review: 2 approved with reservations, 1 not approved]. F1000Research 2023, 12:1009 (https://doi.org/10.5256/f1000research.148219.r248256)
NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article.

Comments on this article Comments (0)

Version 1
VERSION 1 PUBLISHED 21 Aug 2023
Comment
Alongside their report, reviewers assign a status to the article:
Approved - the paper is scientifically sound in its current form and only minor, if any, improvements are suggested
Approved with reservations - A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit.
Not approved - fundamental flaws in the paper seriously undermine the findings and conclusions
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