The relationship between oral infections and systemic alterations has been increasingly explored in medical-dental research. The most prevalent oral infections shared by the overall population are endodontic infection and periodontal disease. However, infection of endodontic origin, its consequences for periapical tissues, and its systemic repercussions have not been scientifically explored, especially in association with some systemic disorders

This research assessed the amount and configuration of root canals in maxillary and mandibular third molars by means of four methods (radiographic, macroscopic, microscopic, and serial sections). A total of 100 third molars were selected, and the following exclusion criteria were applied: teeth with crowns completely destroyed by caries; incomplete root formation; root resorption or fractures. Healthy teeth or teeth with minor restorations were included. Samples were divided into two groups...

Objective: The aim of this case report was to describe the endodontic treatment of a mandibular first premolar with three canals. Case report: A 54-year-old male patient sought Federal University of Rio de Janeiro (UFRJ) emergency care with painful tooth #34. Clinical/radiographic examination revealed severe caries. Pulp sensibility tested positive and exacerbating, with no periapical symptoms at palpation and percussion. Therefore, the patient was diagnosed with irreversible pulpitis. He...

The presence of periapical bone alteration in the anterior maxilla, particularly between maxillary incisors, can be mistaken for apical periodontitis (AP) or nasopalatine duct cyst (NPDC) of which accurate differential diagnosis should be established to define the best treatment for endodontically untreated maxillary anterior teeth. The proper use of clinical sources of investigation, especially pulp sensibility tests, is of paramount importance, since it is tested negative in cases of apical...

Susceptibility to bacterial growth in gutta-percha (GP) cones and their decontamination by four different chemical substances were assessed. Six GP cones were selected from a clinical environment and taken to Brain Heart Infusion (BHI) growth medium with the aid of sterile tweezers to assess bacterial growth. Other twelve cones were divided into four groups of three cones each: Group 1 with 2.5% sodium hypochlorite; Group 2 with 70% alcohol; Group 3 with 2% chlorhexidine gel; and Group 4...

Introduction: Restoration of endodontically treated teeth is a factor that can significantly influence treatment success. In this context, simultaneous restoration of both root and crown represents a restorative possibility. An excellent alternative is the use of fiberglass posts combined with direct composite resin restorations, mainly due to the mechanical and aesthetic properties of fiber posts associated with current composite resins. Objective: The objective of this study is to present...

Introduction: The quality of crown restoration plays an important role in endodontic treatment success. Objective: This study aimed to analyze the presence and quality of crown restorations (CR) performed in patients subjected to endodontic treatment (ET) in a Dental Specialty Center DSC (DSC), in addition to assessing how effective health care provided to users of Brazilian Unified Public Health System (SUS) is. Methods: All patients who had completed ET in a DSC in northeastern Brazil from...

Introduction: Preparation and cleaning of root canals may have their effectiveness affected by factors such as root canal system anatomy and intracanal infection. Root canal shaping is a complex stage of the treatment and requires prudence and caution to be implemented. Single-file reciprocating systems have been recently used in Endodontics for preparation of root canals. The use of such systems should be guided by their performance, taking the following variables into account: less extrusion...

Introduction: Replacement of Portland cement by MTA has been recommended in clinical practice due to similarity between their composition, as well as mechanical and biological properties. Adding antibiotics to the cement would provide clinical advantages, provided the antibiotic drug be released before and after the setting of cement. Objective: The aim of this study was to assess antimicrobial activity by diffusion and minimum inhibitory concentration (MIC) of pure Portland cement and...

Introduction: Tooth avulsion is a severe injury. Management of teeth and soft tissues affected during and after replantation is important utmost importance to obtain a favorable prognosis. Objective: This study aimed to discuss the conduct of late replantation, based on a case report, and suggest other therapeutic approaches. Case report: Female 9-year-old patient suffered avulsion of tooth #11 which was kept dry for two hours. Replantation of tooth #11 was performed followed by flexible...

Objective: This study aimed to analyze the effectiveness of three filling techniques for experimental cavities with internal root resorption. Methods: A total of 30 artificial maxillary central incisors with a standardized simulated cavity with internal resorption in the middle third of the root canal were used. After preparation, the teeth were randomly divided into three experimental groups according to the filling technique used: McSpaddenTM compactor (group 1), ultrasound (group 2), and...

Introduction: Internal dental anatomy represents a great challenge in Endodontics. Diagnosing and delineating an accurate treatment plan is often a challenge. Objective: The objective of this case report was to describe a clinical case of endodontic intervention in mandibular premolar with complex anatomy, associated with cracked root after two and a half years. Case report: Female patient was referred for evaluation with painful symptoms. Clinical examination revealed tooth #44 provided...

Objective: The aim of this study was to assess effectiveness of 2% peracetic acid in rapid disinfection of gutta-percha and Resilon cones compared to sodium hypochlorite and chlorhexidine. Methods: Guttapercha and Resilon cones were immersed during five minutes for contamination with Enterococcus faecalis suspension. Subsequently, they were divided into groups (n = 10) to test the disinfection protocol: 2% peracetic acid (one and three minutes); 5.25% NaOCl (one and three minutes); 2%...

Introduction: Many factors relative to the characteristics of dental instruments, such as cross-section, tip design and taper, can enhance the action of wearing on root canal walls. Nevertheless, whether file length influences or not preparation quality remains unclear. Objective: To assess the influence of file length over quality of root canal preparation. Methods: Thirty simulated root canals (IM do Brasil) were divided into two groups and prepared with 21-mm and 25-mm FlexoFile...

Introduction: Precise diagnosis is essential for successful endodontic treatment. It is typically achieved based on patient’s first interview combined with physical examination and other complementary imaging examinations, including radiography. Endodontics is the dental specialty most often using diagnostic imaging techniques to obtain detailed information on teeth being assessed. Because of its two-dimensional nature, conventional radiographic images present limitations that hinder or...