PRZEGLĄD ELEKTROTECHNICZNY, ISSN 0033-2097, R. 93 NR 3/2017 121 Sergii V. PAVLOV 1 , Aleksandr T. KOZHUKHAR 2 , Sergiy V. TITKOV 2 , Olexander S. BARYLO 3 , Olena M. SOROCHAN 4 , Waldemar WÓJCIK 5 , Ryszard ROMANIUK 6 , Tomasz ZYSKA 5 , Azamat ANNABAEV 5 Vinnytsia National Technical University (1), Lviv Polytechnic National University (2), Vinnytsia National Medical University (3), Pryazovskyi State Technical University (4), Lublin University of Technology (5), Warsaw University of Technology (6) doi:10.15199/48.2017.03.28 Electro-optical system for the automated selection of dental implants according to their colour matching Abstract.. New and original approach towards implants selection in prosthetic dentistry according to the method of implants digital photographs comparison to digital photographs of own bio-objects reflection spectrums – patient’s dental prostheses and teeth, was suggested. On this basis, prosthetic objects scanner structure and model providing the possibility of information transfer to the PC have been developed and improved circuit software allows ensuring continuous automatic scanning of bio-objects and avoiding dependence of their digital photographs on external illumination. Streszczenie. W artykule przedstawiono nowe podejście do selekcji implantów w protetyce dentystycznej za pomocą cyfrowego porównania zdjęć fotograficznych - protez dentystycznych i zębów pacjenta. Na tej podstawie oparto konstrukcję skanera umożliwiającą przekazywania informacji do komputera. Przedstawiono również oprogramowanie pozwalające na zapewnienie ciągłości automatycznego skanowania obiektów biologicznych i eliminujące wpływ zewnętrznego oświetlenia na zdjęcia. (Elektro-optyczny system do automatycznego wyboru implantów według ich dopasowania kolorystycznego). Keywords: colour matching, scanning, ADC, digital photographs. Słowa kluczowe: dopasowanie kolorystyczne, skanowanie, przetwarzanie ADC, cyfrowe obrazowanie. Introduction The need for high-accurate, convenient, space effective, simple and cheap electro-optical medical systems (EOMS) of automated receiving of information through various types of probing scanners is arising with ever increasing frequency [1]. Creation of EOMS as a tool for the implants selection optimization in the so-called regenerative medicine is a vital task of the present day. Original materials for bacterial nanocellulose (BNC) are one of the recent developments in the field. For instance, CelMat – wet wound dressing made of native NC (BNC 5%, H 2 O 95%), CelMat MG – wound dressing made of BNC saturated with glycerol and methylnicotinamide (BNC 5%, H 2 O 90%, MNA 0,15%, gl 5%) [2, 3]. The biomimetic structure of BNC – mimicking a body’s own tissue is a good matrix for cells seeding. The biomimetic structure of BNC – mimicking a body’s own tissue is a good matrix for cells seeding, supports efficient cells adhesion and prevents dedifferentiation, the structure allows the mass transport of nutrients and oxygen to support the survival of cells, etc. BNC, synthesized by Gluconacelobacter strain, is a natural biopolimer already investigated in a wide range of applications, including clinical trials for wet wound dressing and as potential implant e.g. in vascular surgery, dental fillings, peripheral nerves regeneration. One of the principles of implants selection is a maximum ensuring of their colour matching in relation to the contiguous tissues. Such tasks are typical for a medical practice, particularly, in prosthetic dentistry, cutaneous surgery and cosmetology. Different types of prosthetic objects, particularly, teeth with diseases and various colour characteristics and healthy teeth, dental prostheses, membranes, skin cover and various materials, may be provided for implantation tasks in prosthetic dentistry. Availability of various peculiarities of prosthetic objects must be considered in the methods and means of automated evaluation. Such peculiarities may be even represented by the so-called intrusion effect (intrusion is defined as impacted luxation resulting from a trauma; anomaly characterized by complete or partial displacement of the tooth into the alveolar bone and its root into the jaw bone). Implantology, maxillo facial surgery and orthopedics pose high requirements to the electronic means of colour matching evaluation. 3D CT scan “GALILEOS”, which allows receiving high-quality evaluation accuracy, meets the majority of such requirements [5]. Three-dimensional reconstruction provides highly-informative support as it allows studying the research area under any angle, in all planes and on any section. However, the device is too costly and requires special (also costly) operation conditions, which is not always available for a doctor. Therefore, medical practice requires simple and cost- effective express evaluation devices, in particular, colour matching evaluation devices in case of implant selection. One of such devices operating according to the principle of colour matching, which was used in medical practice for skin diseases identification, is the one operating according to the principle of the examined skin surface scanning by means of seven-colour LED matrix [6]. The device structure is shown in Fig.1. The device consists of LED matrix of seven colours, which sequentially, by manual operation, illuminate bio-medical object; rays reflected from the objects are directed at photoreceiver input and its signals are shown on digital display meter. For information exchange, microcontroller had hardware-programmed synchronous serial port SPI, I 2 C and Universal Synchronous Asynchronous Receiver/Transmitter (USART) [7, 8]. Fig.1. Structure of the device based on the examined skin surface scanning by means of LED matrix. 1 – photoreceiver, 2 – bio- medical object, 3 – LED matrix element, 4 – photoreceiver signal meter with digital display