Dental Photography and Numeric Shade Quantification as a Substitute to Conventional and Instrumental Shade Matching Techniques in the Esthetic Zone

NCT ID: NCT04817579

Last Updated: 2024-06-25

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 10 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-07-31
• Study Completion Date: 2024-12-31

Brief Summary

Visual shade matching is the most common method, in which a color standard from a commercially available dental shade guide is compared to and matched with the target tooth. However, several factors can contribute to perception errors including: different lighting variables, multiple shade systems available in the market with lack of standardization in color systems and corresponding porcelain systems, individual human variables in color perception and lack of understanding of color science.

Therefore, in order to eliminate the uncontrolled variables during the color matching process, instrumental methods have been developed. Spectrophotometric measurement methods employing computer calculations, based on color science and theories, allow quantitative evaluation which is objective and appears to be more accurate. However, extremely high costs, relatively low performance with respect to agreements of the computer-aided devices, and edge loss error make it less acceptable.

One of the most powerful tools in communicating with both patients and dental ceramists is digital photography. Hence, this study is designed to explore the possibilities of a novel approach to shade management (eLABor_aid) utilizing a photocolorimetric (PCM) method and subsequent shade formulation without the use of stock shade guides in comparison to well-known visual and instrumental methods.

The aim of the study is to evaluate the accuracy of digital photography combined with shade analyzing software (eLAB) in optimizing shade matching when compared to conventional and instrumental methods of shade selection.

A Null Hypothesis is suggested where no significant difference regarding shade selection between eLAB protocol, conventional and instrumental methods will be found.

Conditions

Discoloration, Tooth; Chip Tooth; Non Vital Teeth; Trauma Dental

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

Conventional visual shade matching

Patients requiring single crown in the esthetic zone treated with Conventional visual shade matching (Ivoclar Classic shade guide)

Group Type: ACTIVE_COMPARATOR

Conventional visual shade matching

Intervention Type: DEVICE

Visual shade matching is the most common method, in which a color standard from a commercially available dental shade guide is compared to and matched with the target tooth.

Spectrophotometer

Patients requiring single crown in the esthetic zone treated with Spectrophotometer (Vita Easy Shade)

Group Type: EXPERIMENTAL

Spectrophotometer

Intervention Type: DEVICE

Spectrophotometric measurement methods employing computer calculations, based on color science and theories, allow quantitative evaluation which is objective and appears to be more accurate.

Digital photography combined with eLABor_aid shade analyzing software.

Patients requiring single crown in the esthetic zone treated with Digital photography combined with eLABor\_aid shade analyzing software.

Group Type: EXPERIMENTAL

Digital photography combined with eLABor_aid shade analyzing software

Intervention Type: DEVICE

ELABor\_aid is a new approach to objective shade communication and shade reproduction in dentistry, based on numeric quantification obtained from standardized RGB (red-green-blue) images, and the formulation of a patient personal shade recipe using trichromatic subtractive color mixing laws, thus abandoning the use of visual assessment and shade guides entirely. This approach is currently enjoying increasing popularity for its ease of use, reliability as well as for its practically oriented features like its imaging ability or the digital try-in.

Interventions

Digital photography combined with eLABor_aid shade analyzing software

ELABor\_aid is a new approach to objective shade communication and shade reproduction in dentistry, based on numeric quantification obtained from standardized RGB (red-green-blue) images, and the formulation of a patient personal shade recipe using trichromatic subtractive color mixing laws, thus abandoning the use of visual assessment and shade guides entirely. This approach is currently enjoying increasing popularity for its ease of use, reliability as well as for its practically oriented features like its imaging ability or the digital try-in.

Intervention Type: DEVICE

Spectrophotometer

Spectrophotometric measurement methods employing computer calculations, based on color science and theories, allow quantitative evaluation which is objective and appears to be more accurate.

Intervention Type: DEVICE

Conventional visual shade matching

Visual shade matching is the most common method, in which a color standard from a commercially available dental shade guide is compared to and matched with the target tooth.

Intervention Type: DEVICE

Other Intervention Names

eLAB protocol; Vita Easy-shade; Ivoclar classic shade guide

Eligibility Criteria

Inclusion Criteria

1. Age range of the patients from 20-50 years old; able to read and sign the informed consent document.

2. Patients able physically and psychologically to tolerate conventional restorative procedures.

3. Patients with no active periodontal or pulpal diseases, having teeth with good restorations.

4. Patients with teeth problems indicated for full coverage restoration (e.g. moderate discoloration, coronal fracture where partial coverage would lack retention, mal-posed or malformed teeth, esthetics enhancement of previously placed crown) where the contralateral/adjacent tooth is present.

5. Patients with root canal treated teeth requiring full coverage restorations even if they need fiber post and core fabrication first.

Exclusion Criteria

1. Patients with poor oral hygiene and motivation.

2. Patients with teeth with increased incisal translucency.

3. Patients with severe discolored teeth.

4. Patients with smoking habits.

5. Patients with excessive consumption of coffee or tea.

6. Pregnant women to avoid any complication that may occur in dental office due to pregnancy or due to injected anesthetic solution.

7. Patients with psychiatric problems or unrealistic expectation (patient that has phobia from dental treatments or needle injection).

8. Patients suffer from para-functional habits.

• Minimum Eligible Age: 20 Years
• Maximum Eligible Age: 50 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Cairo University

OTHER

Sponsor Role: lead

Responsible Party

Nada Ahmed Farid Zaki Shehab

Assistant lecturer, Fixed Prosthodontics Department

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Faculty of dentistry, Cairo University

Cairo, , Egypt

Site Status: RECRUITING

Countries

Egypt

Central Contacts

Nada F Shehab

Role: CONTACT

nada.farid@dentistry.cu.edu.eg

+201223402909

Facility Contacts

Reham El basty, Ass. Prof.

Role: primary

Other Identifiers

39920

Identifier Type: -

Identifier Source: org_study_id