Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Video

Updated: Apr 5, 2026

Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry

Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry

Published on: December 9, 2025

Social smile reproducibility using 3-D stereophotogrammetry and reverse engineering technology.

Furkan Dindaroğlu¹, Gökhan Serhat Duran², Serkan Görgülü³

¹a Research Assistant, Department of Orthodontics, Dental Sciences Center, Gülhane Military Medical Academy, Ankara, Turkey.

The Angle Orthodontist

|August 7, 2015

Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Evaluation of mandibular ramus asymmetry in patients with unilateral congenital tooth agenesis.

BMC oral health·2026

Same author

Aesthetic Component of the Index of Orthodontic Treatment Need (IOTN): Can large language models match the performance of orthodontists?

Korean journal of orthodontics·2026

Same author

Mechanical Performance of a Monolithic 3D-Printed Orthodontic Bracket-Crown System: An In-Vitro Study.

Materials (Basel, Switzerland)·2026

Same author

Can household ultrasonic cleaners enhance the stain removal efficacy of chemical agents on orthodontic aligners?

BMC oral health·2026

Same author

Color improvement and stability of orthodontic clear aligners following different cleaning protocols.

Clinical oral investigations·2026

Same author

3D Gaussian Splatting vs. 2D Photogrammetry and Direct Anthropometry for Facial Measurements.

Orthodontics & craniofacial research·2026

Social smile reproducibility was assessed using 3-D stereophotogrammetry. While individual variations exist, the range of social smile reproducibility is not clinically significant for routine observation.

Area of Science:

Orthodontics and Dentofacial Orthopedics
Biomedical Engineering
Facial Aesthetics

Background:

Assessing the reproducibility of facial expressions like the social smile is crucial for quantitative analysis in orthodontics and facial aesthetics.
3-D stereophotogrammetry offers a precise method for capturing and analyzing facial morphology and dynamic changes.

Purpose of the Study:

To evaluate the range of reproducibility of the social smile using 3-D stereophotogrammetry and reverse engineering technology.
To determine if variations in social smile reproducibility are clinically significant.

Main Methods:

15 white adolescents (14-17 years) had 16 social smile images captured using 3dMDFlex.
Images were aligned, and smile areas segmented using Geomagic Control software for 3-D deviation analysis.

Keywords:

Reproducibility Reverse engineering Social smile

More Related Videos

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

Published on: January 28, 2020

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Published on: February 23, 2024

Related Experiment Videos

Last Updated: Apr 5, 2026

Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry

Quantitative Assessment Protocol for Facial Soft Tissue Volumetric Changes with Stereophotogrammetry

Published on: December 9, 2025

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

Published on: January 28, 2020

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Published on: February 23, 2024

Bland-Altman plots were used to assess deviations between images, with one image serving as a reference.

Main Results:

Individual image deviations from the reference ranged from 0.34 to 2.69 mm.
Mean deviations among participants ranged from 0.96 ± 0.21 mm to 1.53 ± 0.46 mm.
Intra-patient mean deviations were between 0.32 ± 0.10 mm and 0.59 ± 0.24 mm.

Conclusions:

The social smile exhibits individual variability in reproducibility.
This variability, however, falls below the threshold for clinical significance in standard clinical assessments.
3-D stereophotogrammetry provides reliable data on social smile reproducibility.