CompuShade
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Date
2025
Authors
Nagham Hanani
Marah Dwikat
Journal Title
Journal ISSN
Volume Title
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Abstract
In restorative dentistry, accurate shade selection of composite materials is critical for achieving
aesthetic and natural-looking results. Traditionally, this process relies on manual comparison
with visual shade guides, making it time-consuming and prone to inconsistency due to lighting
conditions and human error. This project presents the design and implementation of an
automated dental composite shade selection and dispensing device aimed at improving efficiency
and precision in clinical settings.
The system captures an image of the patient’s tooth using a Raspberry Pi camera, processes it
using Python-based image analysis, and compares it against stored images of VITA shade
samples taken under identical conditions. Once the closest matching shade is identified, the
result is sent to an Arduino-controlled dispenser. The dispenser selects the appropriate composite
tube, precisely dispenses the material into a hygienic disposable cup, and notifies the dentist via
an LCD and buzzer. With implemented notification system to notify the doctor when the device
is out of cups or if one of the fillings is empty. The system also features a mobile application for
remote interaction, such as requesting additional material or resetting tube counters.
Testing demonstrated consistent performance in color matching, accurate material dispensing,
and successful integration of all hardware modules. The prototype offers a cost-effective and
clinically practical solution, reducing manual effort and material waste while enhancing the
overall workflow for dentists. The project paves the way for smarter, more efficient dental tools
through embedded automation and image-based decision-making.