Search

Background: Endodontics increasingly uses finite element analysis (FEA) to evaluate stress distribution, fracture resistance, and temperature changes in treated teeth. FEA’s endodontic uses, benefits, and drawbacks are examined in this systematic review and meta‑analysis. Methods: A PubMed systematic search found relevant studies published up to January 2022. Original endodontic research articles utilizing FEA to quantify stress distribution, fracture resistance, or temperature changes in treated teeth were eligible. The systematic review comprised 30 publications, 15 of which were meta‑analyzed. Data were extracted using a standard form, and the “Newcastle‑Ottawa Scale (NOS)” for observational studies and the Cochrane risk of bias tool for randomized controlled trials assessed quality. Random‑effects models calculated pooled effect sizes and 95% confidence intervals in RevMan 5.4 meta‑analysis. Results: Meta‑analysis shows FEA‑guided endodontic treatment improves stress distribution (P < 0.001) and fracture resistance (P < 0.05) compared to conventional treatments. The temperature did not vary significantly (P = 0.12). Stress distribution had an effect size of 0.75 (95% CI: 0.65–0.85), fracture resistance 0.42 (95%: 0.12–0.72), and temperature variations ‑0.18. Conclusion: In conclusion, FEA is a valuable technique in endodontics for stress distribution study and fracture resistance testing. FEA models’ accuracy, dependability, and clinical applicability were questioned, underlining the need for more research and development to maximize their endodontics clinical use. [ABSTRACT FROM AUTHOR]

The optimal approach to access cavity preparation in anterior teeth requiring root canal treatment, especially those affected by traumatic injuries, remains contentious among endodontists. Minimally invasive techniques aim to preserve tooth structure while maintaining strength. The effect of different access cavity designs on stress concentration and distribution in necrotized anterior teeth needing root canal treatment is not well documented. This study aims to evaluate and compare the effect of various access cavity designs on stress distribution in anterior teeth using three-dimensional finite element analysis. Three-dimensional finite element models of maxillary central incisors were created. Three groups with different access cavity designs were analyzed: Group A (Cervical access), Group B (Middle access), and Group C (Incisal access). A load of 100 N was applied at a 45-degree angle to the tooth axis in each model, and stress distribution was analyzed. Maximum stress values (in MPa) were recorded for each design. Group A: Enamel (587.52), Dentin (163.97), Composite (65.11); Group B: Enamel (880.93), Dentin (132.32), Composite (81.27); Group C: Enamel (493.92), Dentin (126.99), Composite (42.39). The study found significant differences in stress distribution among different access cavity designs, with traditional middle access showing the highest stress concentration. These findings could inform clinical decisions to optimize outcomes in root canal treatments. [ABSTRACT FROM AUTHOR]

The elimination of necrotic and inflamed pulp tissue, dentin debris, and microorganisms is essential for the success of endodontic treatment. However, the root canal's complexity has led to incomplete cleaning and disinfection. This study aims to compare the efficacy of the penetrability of three different irrigation activating techniques to the apical third of the root canal. Sixty sound single-rooted human mandibular premolars are prepared with rotary instrumentation under continuous sodium hypochlorite irrigation. Three irrigation activation techniques are utilized: group 1 (n = 20), conventional needle irrigation (CN); group 2 (n = 20), side-vented endodontic needle irrigation (EN); and group 3 (n = 20), manual activation irrigation with gutta-percha cone (MA). The penetrability is assessed with the aid of a radiopaque irrigation solution using digital radiography in conjunction with cone-beam computed tomographic (CBCT) measurements. Data are analyzed using a statistical package for social sciences (SPSS), using multiple comparisons to compare the baseline and test values. One-way analysis of variance with post hoc analysis (Tukey honestly significant difference) is performed to detect the statistically significant differences between groups. Manual activation (MA) shows effective delivery of the irrigant into full WL, followed by endodontic needle (EN) and conventional (CN) methods of activation (p < 0.001). The results of the present study show that maximum penetrability of the irrigant is observed with manual activation (MA) using a gutta cone in comparison with the conventional needle (CN). [ABSTRACT FROM AUTHOR]

The outstanding development of NiTi rotary filing systems, has left a great effect on endodontic practicing, which may be mainly related to the superior characteristics of the material itself as well as the continuous innovations regarding its manufacturing process and heat treatments. The aim of this present study, was to compare and evaluate the shaping performance of two rotary Nickel Titanium files, namely; ProTaper Next, Dia-X Files in curved root canal preparation, regarding the extension of apical transportation and amount of canal angulation changes. Apical transportation as well as degree of canal curvature were measured using the Cone Beam Computed Tomographic scanning, then all the data were statistically analyzed by the aid of Chi-square test and paired Student's t test. Within the limited conditions of the present study, there was no significant difference in apical root canal transportation between both systems. Moreover, both systems tend to retain the original canal curvatures within the same degree. [ABSTRACT FROM AUTHOR]

Evolution of a highly qualified materials and techniques were recently innovated to ensure adequate cleaning and total disinfection of the root canal space during endodontic treatment. The exact aim of this study is to compare and contrast the ability of two irrigating systems, namely; EndoActivator system and EndoVac system in cleaning and debridement of the root canal space using either EDTA or QMixTM irrigation in conjunction with the basically used sodium hypochlorite solution. All the teeth under investigation were evaluated using scanning electron microscope with a magnification of X1500 and the collected data were scored then statistically analyzed using Paired, Student's t and Chi-square test. Regarding the irrigating and debridement quality, a significant difference was found to exist between both solutions with more tendency to clean and debride the canal walls when using the QMixTM for irrigation. However, no significant difference exists between EndoActivator and EndoVac systems when used with both irrigating solutions. [ABSTRACT FROM AUTHOR]

Background: Defective endodontic treatment is one of the most common causes of failure among dental patients. When conventional root canal treatment fails, endodontic retreatment is the most conservative method of choice. Therefore, the main goal of retreatment is to regain access to the apical foramen by complete removal of the root canal filling material. Aim and objectives: The aim of this study was to compare of the efficiency of newly introduced FKG Dentaire against ProTaper rotary retreatment files and conventional Gates Glidden + H hand files during root canal retreatment. Materials and methods: 36 extracted human maxillary anterior teeth with one single straight root canal were collected for the study. Teeth were prepared and obturated with gutta-percha points and AH 26 (silver-free) sealer and then divided randomly into 3 groups. (Group 1): the gutta-percha was removed using Gates Glidden and H hand files. (Group 2): the gutta-percha was removed using ProTaper universal retreatment. (Group 3): the gutta-percha was removed using Retreatment FKG Dentaire. The working time was recorded for each group and the sample was evaluated under the electron-scanning microscope. Results: There was significant difference in the total time required for retreatment group showed the least working time. However, under the electron scan microscope, it had been shown that the debris percentage for both FKG (47.5%) and Pro-taper (48%) were found to be significantly less than that observed with H-files group (63%). Conclusion: Teeth retreated using the FKG Dentaire and Protaper, have nearly similar remnant filling material was observed. However, the time required to remove gutta-percha + AH Plus was significantly less in FKG than that required for the ProTaper and H-files. The mean difference is significant at the 0.05 level. [ABSTRACT FROM AUTHOR]

Background: Condensing osteitis (CO) is a common radiopaque lesion observed in the jaws, often detected incidentally on panoramic radiographs. Understanding the prevalence and characteristics of CO is essential for early detection and appropriate management., Objective: To determine the prevalence and characteristics of condensing osteitis among the Saudi population in the Qassim region., Methods: A retrospective study was conducted using 876 digital panoramic radiographs. The presence of CO was identified based on specific radiographic features, and data were collected regarding gender, age, lesion localization, lesion shape, and associated dental status., Results: The prevalence of CO was found to be 2.3% (n = 20) in the study population, with a higher predilection in females (1.4%) compared to males (0.9%). The most commonly affected age group was 30-39 years for males and 10-19 and 30-39 years for females. The mandibular molar region was predominantly affected (90%), with a 'U' shape observed in 55% of the lesions. Root canal treatment was the most commonly associated dental status (75%), followed by deep caries (20%) and large restorations (5%)., Conclusion: The study highlights a 2.3% prevalence of CO in the Saudi population of the Qassim region, with a higher predilection in females and a predominant localization in the mandibular molar region. Dental practitioners should be vigilant in identifying CO, especially in at-risk populations, to facilitate timely diagnosis and appropriate management., Competing Interests: There are no conflicts of interest., (Copyright: © 2024 Journal of Pharmacy and Bioallied Sciences.)