In order to apply the most accurate and efficient locoregional techniques, the knowledge of the anatomical characteristics of the oro-maxilo-facial territory becomes imperatively necessary, without which the installation and the effect of the locoregional anaesthetics may be poor. Due to the many advantages it presents, locoregional anaesthesia is considered as a current use method during routine dental care. A good local or locoregional anaesthetic must be harmless to the tissues, must have no local or general toxicity, must lead to a high quality and durable anaesthetic, must not cause lesions to nerve endings, to be subject to dental surgery or of oral surgery, can be satisfactorily solved by using locoregional anaesthesia techniques, which are used successfully in patients with balanced psychic, who are calm and cooperative. A good anaesthesia suppresses pain, prevents pain-induced shock, and allows the dentist to work in optimal conditions. Although modern anaesthesia techniques have greatly changed the working environment in dental surgeries or outpatient facilities of oral and maxillo-facial surgery, emotion and anxiety, fears continue to exist in patients who will have to undergo care treatments. In order to apply the most accurate and effective locoregional anaesthetic techniques, the knowledge of the anatomical characteristics of oro-maxilo-facial territory becomes imperatively necessary, without which the location and effect of locoregional anaesthetics may be poor. The study includes 114 patients studied in the period 2015-2017 on which we used Stabident system intraosseous anaesthesia of company Fairfax under two available systems: Stabident Regular and Stabident Alternative. Intraosseous anaesthesia reduces the amount of injected anaesthesia, thus reducing the toxicity of anaesthetic procedures; this technique allows the use of vasoconstrictors for the immediate delivery of anaesthesia to the teeth affected by pulpitis without the risk of necrosis. Intraosseous anaesthesia is an anaesthesia technique similar to the ideal anaesthesia technique.