Maxillary Anterior Teeth and Facial Index Parameters in Correlation With Recurring Esthetic Dental Proportion

NCT06812468 | Completed FDA Device

• 1 other identifier: RED proportion
• Study Type: observational
• Target: 20
• Locations: 1 country
• Sites: 2

Brief Summary

The goal of this cross-sectional study is to state the inter relation between anthropometric parameters of pristine maxillary anterior teeth and facial index and their correlation with recurring esthetic dental proportion (RED) using 3D digital software (Medit) with intra intraoral scanner.The study comprised of 20 adult out patients with an equal number of males and females who had 20-35 years old.

Conditions

There is no Disease the Study Focus on Facial Index in Relation to RED

Keywords

RED, Facial index, Teeth measurement

Outcome Measures

Primary Outcomes (1)

• parameters of pristine maxillary anterior teeth and facial index in correlation with recurring esthetic dental proportion (RED)

  Assessment of facial index and facial forms:the morphological face height (n-gn) was measured as the distance between the nasal root (n: nasion) and the lowest point of the lower border of mandible in the mid-sagittal plane, (gn: gnathion), while the maximum facial width was considered as bizygomatic width (zy-zy)which was measured from the left zygion to the right zygion.All measurements were performed by a 3D face scanning software (BELLUS 3D). the overall facial form was calculated according to the formula FI = FW / FH× 100. Assessment of Maxillary Anterior Teeth Dimensions:The dimensions of Maxillary anterior teeth were measured for each case as: width and length of central, lateral and canines, in both right and left segments and inter canine distance. All dimensions were measured using scans which were taken by MEDIT i700 intraoral scanner.Correlating the results with RED proportion :The formula for determining the ideal width of the central incisor is:CIW =ICW/2 (1+RED+RED2).

  20 years old to 35years old

Study Arms (2)

10 female patients

the facial index and the anterior teeth dimensions and the interrelation between them were assessed. Finally the results were correlated with recurring aesthetic dental proportion (RED). Moreover the results were statistically analyzed using the Independent t-test or an equivalent non-parametric test was used for comparison between the two groups, and the Pearson's correlation coefficient (r) test was used for correlating different parameters.

Device: Bellus 3D smart application; Device: Medit i-700 intraoral scanner

10 males patients

the facial index and the anterior teeth dimensions and the interrelation between them were assessed. Finally the results were correlated with recurring aesthetic dental proportion (RED). Moreover the results were statistically analyzed using the Independent t-test or an equivalent non-parametric test was used for comparison between the two groups, and the Pearson's correlation coefficient (r) test was used for correlating different parameters.

Device: Bellus 3D smart application; Device: Medit i-700 intraoral scanner

Interventions

Bellus 3D smart application DEVICE

Bellus3D is a modern multi-digital digicam, 3-D face scanning that captures in an expert grade, complete 3-D face scans with the pressing of an unmarried button in seconds. It takes 10 s to create an excessive decision 3-D face scan. Bellus3D's excessive precision scanning detects the soft tissue parameters and over a hundred facial andmarks. It uses two Infrared structured light VCSEL (vertical-cavity surface-emitting laser) projectors for high-resolution face scanning. The technique of facial scanning by (Bellus3D) and measuring facial index by (Medit) software was performed following manufacture instructions , The patient's head Stabilized and aligned with the center of the face scan software (Bellus 3D) to avoid scan distortion, The head was tilted towards right and then towards left along with the face analog in the scan software combined with upward and downward movement to ensure complete detection and record of facial landmarks. Then the obj 3D file exported to Medit Software.

10 female patients; 10 males patients

Medit i-700 intraoral scanner DEVICE

Medit i-700 intra oral scanner was used to measure the teeth dimensions , it has several advantages including that it can capture up to 70 FPS (FRAMES PER SECOND), which is significantly faster than the previous model. It delivers high image resolution for better quality. The Medit i700 offers a remote control mode and a built-in UV-C disinfection function. In this study a zigzage movement was used which more accurate rout for recording all anterior teeth dimensions and surrounding tissue while scanning. In agreement with a previous study, we started from the posterior left area by scanning the occlusal side, then it proceeded toward the posterior right area by following a zigzag movement when the anterior teeth were scanned. After the occlusal area, the palatal/lingual side was scanned from the right to the left area, and then the buccal side was scanned from the posterior left area to the posterior right one,Then the obj 3D file exported to Medit Software.

10 female patients; 10 males patients

Eligibility Criteria

• Age: 20 Years - 35 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

Egyption Population

You may qualify if:

• \. must be in the same age group (20-35). 2. free of systemically disease (GI, D.M., gastric influx). 3. Free of facial asymmetry. 4. Free of facial trauma or surgeries. 6.Normal Class 1 occlusion. 7. Free from any tooth wear disorder. 8.periodontally healthy without any previous orthodontic treatment. 9. Maxillary anterior teeth free from restoration

You may not qualify if:

• \. History of surgery in the anterior maxillary or mandibular region. 2. Restorations in anterior sextant. 3 pregnant or lactating females. 4. gingival hyperplasia. 5. orthodontic treatment. 6. Facial asymmetry and clefts 7.Smokers patient

Sponsors & Collaborators

• Al-Azhar University: lead

Study Sites (2)

Al Azhar University

Cairo, Egypt

Location

faculty of dentistry, Al azhar University for girls

Nasr City, Cairo, Egypt

Location

Related Publications (20)

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• Ahmed N, Halim MS, Aslam A, Ghani ZA, Safdar J, Alam MK. An Analysis of Maxillary Anterior Teeth Crown Width-Height Ratios: A Photographic, Three-Dimensional, and Standardized Plaster Model's Study. Biomed Res Int. 2022 Feb 7;2022:4695193. doi: 10.1155/2022/4695193. eCollection 2022.

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• Akl MA, Mansour DE, Mays K, Wee AG. Mathematical Tooth Proportions: A Systematic Review. J Prosthodont. 2022 Apr;31(4):289-298. doi: 10.1111/jopr.13420. Epub 2021 Sep 23.

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• Alaghbari SSA, Mohmmed BSA, Alalwani NNM, Sobhy MM, Qadi KA, Khawaji SA, Mhbob HO, Alsadi FM, Moaleem MMA. Analysis of the Facial Measurements and Dental Arch Dimensions for the Construction of Dental Prostheses among Adult Yemenis. J Contemp Dent Pract. 2023 Aug 1;24(8):595-604. doi: 10.5005/jp-journals-10024-3511.

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• Ward DH. Proportional Smile Design: Using the Recurring Esthetic Dental Proportion to Correlate the Widths and Lengths of the Maxillary Anterior Teeth with the Size of the Face. Dent Clin North Am. 2015 Jul;59(3):623-38. doi: 10.1016/j.cden.2015.03.006.

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• Jafri Z, Ahmad N, Sawai M, Sultan N, Bhardwaj A. Digital Smile Design-An innovative tool in aesthetic dentistry. J Oral Biol Craniofac Res. 2020 Apr-Jun;10(2):194-198. doi: 10.1016/j.jobcr.2020.04.010. Epub 2020 Apr 18.

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  PMID: 36277123 BACKGROUND

MeSH Terms

Conditions

Erythema

Condition Hierarchy (Ancestors)

Skin Diseases; Skin and Connective Tissue Diseases; Skin Manifestations; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Officials

• Heba A Head of oral and dental biology department, Professor of oral and dental

  Al-Azhar University

  STUDY DIRECTOR

• Seham I Lecturer of oral biology, PHD

  Al-Azhar University

  STUDY DIRECTOR

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: CROSS SECTIONAL
• Target Duration: 1 Day
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Demonstrator of oral and dental biology departement

Study Record Dates

• First Submitted: February 2, 2025
• First Posted: February 6, 2025
• Study Start: September 24, 2022
• Primary Completion: September 24, 2022
• Study Completion: September 24, 2022
• Last Updated: February 21, 2025

Record last verified: 2025-02

Data Sharing

• IPD Sharing: Will share
• Shared Documents: SAP, ICF, CSR
• Time Frame: Data requests can be submitted starting 9 months after article publication, and the data will be made accessible for up to 24 months.
• Access Criteria: Access to trial IPD can be requested by qualified researchers engaging in independent scientific research and will be provided following review and approval of a research proposal and Statistical Analysis Plan (SAP) and execution of a Data Sharing Agreement (DSA)

Locations

EG (2)