The objective was to compare the color match and color stability behavior of single- and multi-shade resin-based composites (RBCs) used for direct restorations. This review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Randomized clinical trials evaluating the shade performance of single-shade RBCs in direct restorations were included. A search of the scientific literature was performed in five databases (April 2024). The meta-analysis was performed using RevMan 5.4, calculating the risk difference (RD) and 95% confidence interval (CI) of the dichotomous outcome using a random effects model. Bias was assessed using the RoB 2.0 tool, and certainty of evidence was assessed using the GRADEpro tool. Four studies were selected, with 263 restorations analyzed. The results showed comparable performance between single-shade RBCs and multi-shade RBCs in terms of color match and color stability over 12 months. Three studies had a low risk of bias with all expected results, and one study had some concerns. The certainty of evidence for color stability was considered low for all follow-up periods due to the small number of events and sample size. According to the United States Public Health Service Evaluation (USPHS) and the World Dental Federation (FDI), there is comparable clinical color performance between single-shade and multi-shade RBCs over 12 months.

Objectives: The aim of this study was to evaluate, by microcomputed tomography (micro‐CT), the shaping ability and reduction of dentin thickness in mesial and distal surfaces of the ProTaper Gold (PTG; Dentsply Sirona, Ballaigues, Switzerland) and R‐Motion (RM; FKG Dentaire, La Chaux‐de‐Fonds, Switzerland) systems in long‐oval canals of lower incisors. Materials and Methods: Twenty long‐oval lower incisors were selected, compared anatomically, and scanned by micro‐CT (SkyScan 1172, Bruker Micro‐CT, Kontich, Belgium). The teeth were divided into two groups ( n = 10) according to instrumentation technique: PTG and RM. The following morphometric measurements were made on images recorded before and after preparation: volume, surface area, structure model index (SMI), unprepared walls, and dentin thickness parameters were calculated. The Shapiro–Wilk test and Student t ‐test were used for comparison of the data between the two groups at a significance level of 5%. Results: Significant differences were found in volume (127.60% vs. 69.22%) and reduction in dentin thickness on the distal surface of the root canal, with higher values for PTG compared to RM, respectively ( p < 0.05). There was no significant difference in surface area (34.79% vs. 26.93%), SMI, and the percentage of unprepared areas (9.43% vs. 12.22%). Conclusion: Although GTP resulted in a greater reduction in dentin thickness on the distal surface and volume, there was no difference in the percentage of contact surface and unprepared areas between the two systems, confirming that neither technique was able to completely prepare the long‐oval canals of the lower incisors. Clinical Relevance: Despite the technological advances in instruments launched on the market, exhibiting greater flexibility due to their metallurgical properties and short sequences, there is little scientific evidence regarding the new RM instrument, manufactured by FKG Dentaire, and its root canal modeling capacity.

The objective was to compare the color match and color stability behavior of single and multishade resin-based composites (RBCs) used for direct restorations. This review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Randomized clinical trials evaluating the shade performance of single-shade RBCs in direct restorations were included. A search of the scientific literature was performed in 5 databases (April 2024). The meta-analysis was performed using RevMan 5.4, calculating the risk difference (RD) and 95% confidence interval (CI) of the dichotomous outcome using a random effects model. Bias was assessed using the RoB 2.0 tool, and certainty of evidence was assessed using the GRADE tool. Four studies with 263 restorations analyzed were selected. The results showed comparable performance between single-shade RBCs and multishade RBCs in terms of color match and color stability over 12 months. Three studies had a low risk of bias with all expected results, and one study had some concerns. The certainty of evidence for color stability was considered low for all follow-up periods due to the small number of events and sample size. According to the United States Public Health Service Evaluation (USPHS) and the World Dental Federation (FDI), there is comparable clinical color performance between single-shade and multishade RBCs over 12 months.

A cirurgia parendodôntica constitui um conjunto de procedimentos que têm como objetivo reparar complicações que não puderam ser solucionados através da endodontia convencional, ou quando essa não é passível de execução. Este estudo teve como objetivo descrever o caso clínico de uma cirurgia parendodôntica associada a terapia fotodinâmica no elemento dental 11. O caso foi conduzido realizando o acesso ao sistema de canais radiculares de forma retrograda. Foram realizadas: antissepsia intra/ extra bucal, anestesia infiltrativa, retalho para acesso, confecção da loja óssea, apicectomia, retroinstrumentação, terapia fotodinâmica, retrobturação, preenchimento da loja óssea, reposicionamento do retalho e sutura com acompanhamento tomográfico de feixe cônico de 4 anos. Concluímos que, a associação do ato cirúrgico com a aplicação de laser de baixa potência através da terapia fotodinâmica potencializou a desinfecção e a eliminação de bactérias persistentes ao fracasso do tratamento endodôntico anterior, propiciando benefícios adicionais ao paciente quando comparado à técnicas cirúrgicas convencionais.

Introduction: Cannabidiol (CBD), a nonpsychoactive compound derived from Cannabis sativa , has shown potential to influence cellular processes that are important for dental tissue repair. The aim of this scoping review was to map in vitro studies evaluating the influence of CBD on the osteogenic/odontogenic differentiation of human dental pulp stem cells (hDPSCs) in order to contribute to a better understanding of its therapeutic potential. Methods: The review followed the Arksey and O′Malley framework, supported by the JBI Manual and PRISMA‐ScR guidelines. The protocol was registered on OSF (osf.io/zfhca/). Comprehensive searches were conducted from January to June 2025 in PubMed, EMBASE, BVS, Scopus, Web of Science, ScienceDirect, and SciELO. Only studies published in English were included. Results: Thirty articles were identified, and three in vitro studies met the eligibility criteria. At low concentrations (0.1–5 μ M), CBD improved hDPSC viability, proliferation, migration, and differentiation. CBD also activated the mitogen‐activated protein kinase (MAPK) and wingless‐related integration site/beta‐catenin signaling (WNT/ β ‐catenin) pathways and increased the expression of odontogenic markers such as Sialophosphoprotein (DSPP), Runt‐related transcription Factor 2 (RUNX2), and osteocalcin. Conclusion: CBD shows promise as a bioactive molecule in regenerative endodontics, supporting mineralization, regulating inflammatory mediators, and promoting critical cellular activities in hDPSCs. Nevertheless, the available evidence is limited and further preclinical and clinical studies are essential to develop therapeutic protocols and assess long‐term safety. These preliminary findings indicate CBD as a novel candidate for regenerative strategies in endodontics.

Endodontics aims to contain changes in the pulp and periapex, through biomechanical preparation, which, using instruments and irrigating solutions, disinfects the root canals. This work aims to contain a clinical case of endodontic treatment on an upper first premolar with three root canals. The patient came to the clinic complaining of spontaneous pain in the region of tooth 24. In the clinical and radiographic examination, an unsatisfactory restoration and the existence of infiltration were found. After performing the thermal and percussion test, the diagnosis of symptomatic irreversible pulpitis was made. In the first session, coronary access was made, exposing all channels and being able to observe the third channel. After neutralizing the pulp chamber, intracanal medication and provisional medication were placed. In the second session, the root canals were instrumented, obtaining the #35 file and #40 palatal file as a memory instrument for the vestibular canals, as well as the filling of all canals. The existence of three root canals in the upper first premolar is not very prevalent, but it is important that the professional knows about the likely changes in the anatomy, even though these are not constant, as they can alter the success of the pulpectomy. The efficient way to manage this case is based on prior knowledge of the internal anatomy of the teeth and their possible changes, followed by assertive coronary access and contour/convenience, allowing the location of the canals presente.