ABSTRACT
CONTEXT: The use of intracanal medication aims to provide antimicrobial activity in the root canal system, leading to a more satisfactory condition for root canal obturation. However, it is important to evaluate whether such medication would affect the sealing-off from the main root canal of ramifications such as lateral canals. AIM: Evaluate the influence of calcium hydroxide [Ca(OH)2] paste on the filling of lateral canals. SETTINGS AND DESIGN: Ex vivo quantitative laboratory study. MATERIALS AND METHODS: Sixty single-rooted teeth with lateral canals created were used, 10 teeth per group. Group A was described respectively as lateral condensation technique (subgroup 1), thermomechanical compaction (subgroup 2), and continuous wave of condensation (subgroup 3). In Group B, subgroups 4, 5, and 6 were filled with Ca(OH)2 for 7 days before filling using the techniques applied in subgroups 1, 2, and 3. Radiographic evaluation was performed to count the number of filled lateral canals in each group. The teeth were cross-sectioned over the lateral canals; thus, 180 specimens were obtained. Each specimen was immersed in a polyester resin. Digital images were obtained and specific software (Image Tool; ) was used to evaluate the number of obturated lateral canals and the filling length in each lateral canal of groups. STATISTICAL ANALYSIS USED: Data were statistically analyzed using SPSS 12.0 for Windows (Descriptive statistical analysis and Newman-Keuls test). RESULTS: A greater number of simulated lateral canals were filled in Group A (91.1%). Group B had less filled lateral canals (33.3%). The sealing of lateral canals was statistically different between Group B (26.15%) and Group A (74.43%). CONCLUSIONS: According to the radiographic analysis and the linear filling measurement, the use of Ca(OH)2 decreased the number and the length of sealed lateral canals.
Subject(s)
Calcium Hydroxide/administration & dosage , Root Canal Filling Materials , HumansABSTRACT
In this study, endodontic treatments of maxillary second premolars with unusual anatomical configuration were presented. Maxillary second premolars usually have one root with one or two root canals. The occurrence of variations in anatomical configuration is also common; therefore, it must be taken into account in clinical and radiographic evaluation during the endodontic treatment. These teeth may also require special shaping and filling techniques. This article reports and discusses the treatment recommendations for unusual occurrences of anatomical configurations in four different maxillary second premolars.
ABSTRACT
Success in root canal treatment is achieved after thought cleaning and shaping followed by the complete obturation of root canal system. Such treatment may be performed in root canal systems that do not comply with the normal anatomical features described in standard textbooks. This article describes the conventional root canal treatment on an unusual mandibular second molar with four root-canals.
ABSTRACT
Mandibular premolars usually have a single root and canal; however, during clinical and radiographic evaluation as part of endodontic treatment it must be noted that variations in anatomical configuration are not uncommon. These teeth may require special canal preparation and filling techniques. This article discusses the treatment recommendations for unusual anatomical configurations in two different mandibular premolars and reports the treatment carried out on these teeth.
