There is no Disease the Study Focus on Facial Index in Relation to REDREDNCT06812468
Maxillary Anterior Teeth and Facial Index Parameters in Correlation With Recurring Esthetic Dental Proportion
An observational study of There is no Disease the Study Focus on Facial Index in Relation to RED, run by Al-Azhar University at 2 sites in Egypt.
Trial 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… Read more about this study
- Who is it for?
- Ages 20 to 35 years
- Conditions the study is for
- There is no Disease the Study Focus on Facial Index in Relation to RED
- What is being tested?
- Bellus 3D smart application and Medit i-700 intraoral scanner
- Type of treatment
- Pill or oral medicine, Medical device
- How many people
- 20 participants
- Where
- 2 sitesEgypt
- Study dates
- 24 Sep 2022to 24 Sep 2022
- How long will I take part?
- 1 Day
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 to 35 years
- All sexes
- No healthy volunteers
- Adult
Study population: Egyption Population
Who may be able to join
- 1. 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
- -
Who cannot join
- 1. 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
- -
Trial locations and contacts
2 sites in 1 country.
Egypt2 sites
Al Azhar University
Cairo
faculty of dentistry, Al azhar University for girls
Nasr City, Cairo
About this study
Official title: Anthropometric Parameters of Pristine Maxillary Anterior Teeth and Facial Index in Correlation With Recurring Esthetic Dental Proportion (RED) by 3D Digital Software
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.
Read the detailed description
The research focuses on analyzing the proportions of maxillary anterior teeth in relation to facial measurements, particularly within the Egyptian population. It evaluates how closely these dimensions align with the Recurring Esthetic Dental (RED) proportions, which suggest that the width of anterior teeth should decrease by a constant ratio moving distally. Using advanced digital tools such as the BELLUS 3D face scanner and MEDIT i700 intraoral scanner, the study collected detailed facial and dental measurements from participants to explore the correlation between facial index and tooth dimensions. The sample consisted of 20 participants (10 males and 10 females), with data analyzed using statistical methods to assess symmetry and gender variations in these proportions.). 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.
- Being tested
- Bellus 3D smart application, Medit i-700 intraoral scanner
- Keywords
- RED, Facial index, Teeth measurement
- Medical subject headings
- Erythema
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Bellus 3D smart applicationDevice
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.
Medit i-700 intraoral scannerDevice
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.
| Study group | Role | What they receive |
|---|---|---|
| 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. Receives: 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. Receives: Device: Bellus 3D smart application; Device: Medit i-700 intraoral scanner |
What is being measured
The primary outcome is the main question the study is designed to answer.
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).
Measured: 20 years old to 35years old
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Feb 2025
- Study start24 Sep 2022
- Primary completion24 Sep 2022
- Study completion24 Sep 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (20)Papers the sponsor has linked to this study.
- Other trials for There is no Disease the Study Focus on Facial Index in Relation to REDStudies of the same condition, open and under way.
- More trials run by Al-Azhar UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Cross-sectional
- Enrolment
- 20 participants (actual)
- Target duration
- 1 Day
Sponsor and investigators
- Lead sponsor
- Al-Azhar University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Souad Mohamed, Al-Azhar University
- Investigators
- Heba A Head of oral and dental biology department, Professor of oral and dental, Study director, Al-Azhar UniversitySeham I Lecturer of oral biology, PHD, Study director, Al-Azhar University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06812468
- Sponsor's protocol ID
- RED proportion
- Acronym
- RED
- Status last verified
- Feb 2025
- First submitted
- 2 Feb 2025
- Last updated
- 21 Feb 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- Yes: Data obtained through this study may be provided to qualified researchers with academic interest in RED proportion. Data shared will be coded, with no PHI included. Approval of the request and execution of all applicable agreements are prerequisites to the sharing of data with the requesting party.
Publications
Gadallah MA, Khamis MM, Abdelhamid AM, Ezzelarab S. Evaluation of the use of different intraoral scanners for auricular prosthetic reconstruction. J Prosthet Dent. 2025 Aug;134(2):513-519. doi: 10.1016/j.prosdent.2023.09.028. Epub 2023 Oct 27.
PubMed 39492256Dag OD, Dagli I, Kurt A. The influence of different tooth proportions obtained using digital smile design on the perception of smile esthetics. J Esthet Restor Dent. 2024 Mar;36(3):494-502. doi: 10.1111/jerd.13164. Epub 2023 Nov 11.
PubMed 37950584Fung L, Brisebois P. Implementing Digital Dentistry into Your Esthetic Dental Practice. Dent Clin North Am. 2020 Oct;64(4):645-657. doi: 10.1016/j.cden.2020.07.003. Epub 2020 Aug 12.
PubMed 32888514Al-Kaisy N, Garib BT. Analysis of the golden proportion and width/height ratios of maxillary anterior teeth in Arab and Kurdish populations. J Prosthet Dent. 2018 Jun;119(6):981-986. doi: 10.1016/j.prosdent.2017.08.017. Epub 2017 Nov 15.
PubMed 29153745Ahmed 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.
PubMed 35229002Liao P, Fan Y, Nathanson D. Evaluation of maxillary anterior teeth width: A systematic review. J Prosthet Dent. 2019 Sep;122(3):275-281.e7. doi: 10.1016/j.prosdent.2018.10.015. Epub 2019 Apr 5.
PubMed 30955941Akl 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.
PubMed 34463403Alaghbari 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.
PubMed 38193184Wang Y, Song Y, Zhong Q, Xu C. Evaluation of influence factors on the width, length, and width to length ratio of the maxillary central incisor: A systematic review and meta-analysis. J Esthet Restor Dent. 2021 Mar;33(2):351-363. doi: 10.1111/jerd.12606. Epub 2020 Jul 8.
PubMed 32643266Cinelli F, Piva F, Bertini F, Russo DS, Giachetti L. Maxillary Anterior Teeth Dimensions and Relative Width Proportions: A Narrative Literature Review. Dent J (Basel). 2023 Dec 25;12(1):3. doi: 10.3390/dj12010003.
PubMed 38248211Radia S, Sherriff M, McDonald F, Naini FB. Relationship between maxillary central incisor proportions and facial proportions. J Prosthet Dent. 2016 Jun;115(6):741-8. doi: 10.1016/j.prosdent.2015.10.019. Epub 2016 Jan 13.
PubMed 26794701Ward 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.
PubMed 26140969Jafri 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.
PubMed 32373450Tsuchida Y, Shiozawa M, Handa K, Takahashi H, Nikawa H. Comparison of the accuracy of different handheld-type scanners in three-dimensional facial image recognition. J Prosthodont Res. 2023 Apr 12;67(2):222-230. doi: 10.2186/jpr.JPR_D_22_00001. Epub 2022 Jun 29.
PubMed 35768278Ellakwa A, McNamara K, Sandhu J, James K, Arora A, Klineberg I, El-Sheikh A, Martin FE. Quantifying the selection of maxillary anterior teeth using intraoral and extraoral anatomical landmarks. J Contemp Dent Pract. 2011 Nov 1;12(6):414-21. doi: 10.5005/jp-journals-10024-1069.
PubMed 22269230
Study at a glance
From the registry record, last updated by the sponsor on 21 Feb 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Anthropometric Parameters of Pristine Maxillary Anterior Teeth and Facial Index in Correlation With Recurring Esthetic Dental Proportion (RED) by 3D Digital Software
- ClinicalTrials.gov ID
- NCT06812468
- Acronym / sponsor ID
- RED / RED proportion
- Keywords
- RED, Facial index, Teeth measurement
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- Al-Azhar UniversityUniversity, hospital or other
- Study start
- 24 Sep 2022 (actual)
- Primary completion
- 24 Sep 2022 (actual)
- Study completion
- 24 Sep 2022 (actual)
- First posted
- 6 Feb 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Detailed description
The research focuses on analyzing the proportions of maxillary anterior teeth in relation to facial measurements, particularly within the Egyptian population. It evaluates how closely these dimensions align with the Recurring Esthetic Dental (RED) proportions, which suggest that the width of anterior teeth should decrease by a constant ratio moving distally. Using advanced digital tools such as the BELLUS 3D face scanner and MEDIT i700 intraoral scanner, the study collected detailed facial and dental measurements from participants to explore the correlation between facial index and tooth dimensions. The sample consisted of 20 participants (10 males and 10 females), with data analyzed using statistical methods to assess symmetry and gender variations in these proportions.). 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.
Study design
- Observational model
- Case-control
- Time perspective
- Cross-sectional
- Target follow-up
- 1 Day
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 10 female patients | – | Device: Bellus 3D smart application, Device: Medit i-700 intraoral scannerthe 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. |
| 10 males patients | – | Device: Bellus 3D smart application, Device: Medit i-700 intraoral scannerthe 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. |
Who may qualify
- Ages
- 20 to 35 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
- Study population
- Egyption Population
Key inclusion criteria (2 listed)
- 1. 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
- -
Key exclusion criteria (2 listed)
- 1. 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
- -
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Bellus 3D smart applicationBellus3D 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. | Device | 10 female patients, 10 males patients |
| Medit i-700 intraoral scannerMedit 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. | Device | 10 female patients, 10 males patients |
Primary outcome
parameters of pristine maxillary anterior teeth and facial index in correlation with recurring esthetic dental proportion (RED)
Time frame: 20 years old to 35years old
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).
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Feb 2025.
- Results publication: PubMed 39492256Gadallah MA, Khamis MM, Abdelhamid AM, Ezzelarab S. Evaluation of the use of different intraoral scanners for auricular prosthetic reconstruction. J Prosthet Dent. 2025 Aug;134(2):513-519. doi: 10.1016/j.prosdent.2023.09.028. Epub 2023 Oct 27.
- Results publication: PubMed 37950584Dag OD, Dagli I, Kurt A. The influence of different tooth proportions obtained using digital smile design on the perception of smile esthetics. J Esthet Restor Dent. 2024 Mar;36(3):494-502. doi: 10.1111/jerd.13164. Epub 2023 Nov 11.
- Results publication: PubMed 32888514Fung L, Brisebois P. Implementing Digital Dentistry into Your Esthetic Dental Practice. Dent Clin North Am. 2020 Oct;64(4):645-657. doi: 10.1016/j.cden.2020.07.003. Epub 2020 Aug 12.
- Results publication: PubMed 29153745Al-Kaisy N, Garib BT. Analysis of the golden proportion and width/height ratios of maxillary anterior teeth in Arab and Kurdish populations. J Prosthet Dent. 2018 Jun;119(6):981-986. doi: 10.1016/j.prosdent.2017.08.017. Epub 2017 Nov 15.
- Results publication: PubMed 35229002Ahmed 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.
- Results publication: PubMed 30955941Liao P, Fan Y, Nathanson D. Evaluation of maxillary anterior teeth width: A systematic review. J Prosthet Dent. 2019 Sep;122(3):275-281.e7. doi: 10.1016/j.prosdent.2018.10.015. Epub 2019 Apr 5.
- Results publication: PubMed 34463403Akl 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.
- Results publication: PubMed 38193184Alaghbari 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.
- Results publication: PubMed 32643266Wang Y, Song Y, Zhong Q, Xu C. Evaluation of influence factors on the width, length, and width to length ratio of the maxillary central incisor: A systematic review and meta-analysis. J Esthet Restor Dent. 2021 Mar;33(2):351-363. doi: 10.1111/jerd.12606. Epub 2020 Jul 8.
- Results publication: PubMed 38248211Cinelli F, Piva F, Bertini F, Russo DS, Giachetti L. Maxillary Anterior Teeth Dimensions and Relative Width Proportions: A Narrative Literature Review. Dent J (Basel). 2023 Dec 25;12(1):3. doi: 10.3390/dj12010003.
- Results publication: PubMed 26794701Radia S, Sherriff M, McDonald F, Naini FB. Relationship between maxillary central incisor proportions and facial proportions. J Prosthet Dent. 2016 Jun;115(6):741-8. doi: 10.1016/j.prosdent.2015.10.019. Epub 2016 Jan 13.
- Results publication: PubMed 26140969Ward 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.
- Individual participant dataSharing planned: Yes. Data obtained through this study may be provided to qualified researchers with academic interest in RED proportion. Data shared will be coded, with no PHI included. Approval of the request and execution of all applicable agreements are prerequisites to the sharing of data with the requesting party.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Heba A Head of oral and dental biology department, Professor of oral and dental study director
Al-Azhar University
Seham I Lecturer of oral biology, PHD study director
Al-Azhar University
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of There is no Disease the Study Focus on Facial Index in Relation to RED, run by Al-Azhar University at 2 sites in Egypt.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 21 Feb 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
parameters of pristine maxillary anterior teeth and facial index in correlation with recurring esthetic dental proportion (RED) (time frame: 20 years old to 35years old). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06812468, which also lists 20 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Feb 2025.