Introduction. Cone-beam computed tomography (CBCT) is considered to be the most informative radiographic method for pre- and postoperative analysis of the maxillary anatomy and for avoiding further complication. Canalis sinuosus is one of such structures that damage can go along with bleeding and neurological symptomatology. The aim of the study was to investigate radiological and morphometric features of the canalis sinuosus in Russian population using CBCT technique. Materials and Methods. 150 CBCT scans of 61 males and 89 females aged from 24 to 80 years were retrospectively studied with different slice thickness and evaluated with regards to prevalence and diameter among age and gender groups in Russia. Results. CS prevalence in this study was 67%, and CS was most frequently presented in the lateral incisor region (33.5%). Women showed statistically higher CS prevalence (p<0.01) than the male group, and there was no statistically significant difference observed between occurrence and localization of CS and age groups. Conclusion. CBCT examination demonstrated good diagnostic efficiency in CS visualization, and the CS may have variations on its location and prevalence with statistically significant differences between the gender group and without significant differences among age groups and can depend on the population.

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РЕЗЮМЕ Цель исследования-обзор литературы о параметрах язычных поднутрений в боковом отделе нижней челюсти на основе конусно-лучевой компьютерной томографии (КЛКТ) для предотвращения осложнения в виде перфорации во время проведения дентальной имплантации. Материал и методы. Проведен электронный поиск полнотекстовых статей об исследованиях язычных поднутрений с помощью КЛКТ. Анализировались их распространенность, глубина и угол. Результаты. Из 89 представленных публикаций было отобрано 5 исследований, выполненных с помощью КЛКТ с 2011 по 2016 г. Всего обследовано 1713 зон поднутрений у 1232 пациентов. Распространенность язычных поднутрений составила 46,7-68%. Средняя глубина поднутрений варьировала от 2,4 до 5,4 мм, угол-от 143 до 156,6°. Вывод. Несмотря на то что морфологические показатели язычных поднутрений находятся в одном диапазоне, необходимо проводить КЛКТ-обследование для оценки количества и морфологии доступной костной ткани. При выраженности данного образования (U-тип) рекомендуется применение навигационной хирургии в виде использования хирургического шаблона.

One of the treatments of patients with severe bone atrophy is short implants. It is important to position short implants taking into account the prosthetic loading and right position according to vital anatomical structures. In the presented case report, a seventy-one-year-old female patient underwent the rehabilitation with four short dental implants placed in the anterior mandibula with fully guided surgery to avoid mandibular incisive canal. It solves all the problems in the planning stage when you determine the osteotomy protocol in advance and the prognosis of future restoration according to patient requirements. This clinical case demonstrates the efficiency of patient rehabilitation with the use of short implants in difficult clinical situations.

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Conduction of any surgical operation requires the knowledge of anatomy of this area, the installation of dental implants can cause some complications, including sensorineural disorders and bleeding. One of the causes for this is the lack of awareness of dentists regarding clinically significant structures. The aim of this work was to analyze the awareness of dentists regarding anatomical risk factors.

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