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Effect of Midline Discrepancy and Crown Width Disporportion on Esthetics

NCT06280027 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 180

Last updated 2024-02-28

No results posted yet for this study

Summary

In the web-based cross-sectional study 180 participants were included. Half of them (n = 90) were patients (laypeople) of the university clinic and the remaining half were restorative dentists and prosthodontists with similar levels of clinical experience (at least 3 years of academic training).

A frontal view full-face portrait image of a 25-year-old female was selected as a model for the study, with a smile exhibiting good dental alignment, a quite good midline position, and tooth size symmetry.

The original image was digitally modified by a single restorative instructor using Photoshop CC (Adobe, USA) software program. The modifications were divided into three parts. The first part was the generation of midline discrepancy at different levels. The midline was digitally moved to the right side of the patient 1 - 4 millimeters, gradually. The midline movement was performed together with the whole maxillary arch.

The second part was the generation of individual crown width disproportions. Accordingly, the mesiodistal width of the left central, lateral, and canine was digitally decreased one by one, gradually, while the width of the symmetrical teeth on the right side was simultaneously increased.

The third part was the generation of distributed crown width disproportions. Accordingly, the total mesiodistal width of the left central, lateral, and canine was equally decreased, gradually, while the total width of the symmetrical teeth on the right side was simultaneously increased.

In total, 15 images were displayed in random order to the participants including the original image. An online survey was generated to quantitatively evaluate the level of esthetic perception. Subsequently, the participants were asked to evaluate the level of smile esthetics of the presented random images, without being informed about the digital manipulations of the images. The participants were even not informed about the original image. They were expected to answer the question "How esthetic do you consider this smile?" The evaluation of each image was performed via a Visual analog scale VAS, ranging from point 0 (extremely not esthetic) to point 100 (extremely esthetic).

Conditions

  • Esthetics, Dental

Interventions

OTHER

survey

An online survey was generated to quantitatively evaluate the level of esthetic perception.

Sponsors & Collaborators

  • Marmara University

    lead OTHER

Principal Investigators

  • Bora Korkut, Dr. · Marmara University Faculty of Dentistry

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2023-06-05
Primary Completion
2023-06-12
Completion
2023-12-22

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06280027 on ClinicalTrials.gov