NiTi plays a major role in the advancement in this specialty, which promotes the quality of the endodontic treatment. With the invention of NiTi, various modifications in the design and flexibility of the endodontic instruments were improved by the surface treatment and thermal treatments. In addition to the advancements in the field of dentistry newer movements of the instruments were incorporated offering greater safety and efficiency during root canal treatment. A better understanding of the mechanical properties of these new NiTi instruments and the efficacy of the instruments on the clinical performance is essential if dental practitioners are to select the instruments that provide optimal clinical outcomes, especially in curved or flattened canals. The objective of this literature review is to discuss the characteristics of the NiTi alloys used in the manufacturing of the endodontic instruments as well as an overall view on the metallurgical and mechanical properties of NiTi instruments used in dentistry.

Inflammatory bowel diseases (IBD) are known as chronic disorders of the digestive tract with uncertain aetiology. They include Crohn’s disease (CD), Gardner’s syndrome (GS) and ulcerative colitis (UC). Although IBDs involve primarily the gastrointestinal tract, important extraintestinal manifestations have been reported, notably in the oral cavity. In the last 10 years these diseases have had 20 times more representation among the population, affecting 200.000 people per year in Italy only. Oral manifestations can and must be acknowledged in the dental field using both clinical examination and radiographic techniques. This review’s objective is to investigate how the use of radiographic analysis can be a helpful tool in order to highlight the strong correlation between IBD symptoms and oral lesions and, under certain circumstances, enable an early diagnosis.

The clinical case described in this article represents a case of a 22 years old patient with impacted canine complicated by transversal alveolar deficit, an anterior open bite with a tendency to skeletal Class III and concave profile. This case was treated in the orthodontic department at the Monastir Dental Clinic. The delicate management of space constituted the major difficulty of this case, as the patient had a big crowding and a high risk profile eliminating any extraction option to create the space needed. This malocclusion led to severe consequences on both esthetic but most importantly functional levels. Close collaboration between orthodontist, parodontologist and occlusodontist was necessary in order to successfully handle this case and it had significantly improved the life quality of this patient.