Postoperative pain after root canal filling with bioceramic sealers: a systematic review and meta-analysis of randomized clinical trials
AbstractThe aim of this systematic review and meta-analysis (SRM) was to assess postoperative pain (PP) after endodontic treatment with bioceramic root canal sealer compared to AH Plus ® sealer. This SRM was carried out in accordance with the items on the PRISMA 2020 checklist and Cochrane guidelines and registered in PROSPERO (CRD42021259283). Only randomized clinical trials (RCTs) were included. Meta-analysis was conducted using R software, the standardized means difference (SM D) measure of effect was calculated for quantitative variables, and the odds ratio (OR) for binary variables. The Cochrane tool (RoB 2.0) was us...
Source: Odontology - September 9, 2023 Category: Dentistry Source Type: research
Can acid produced from probiotic bacteria alter the surface roughness, microhardness, and elemental composition of enamel? An in vitro study
AbstractProbiotics are live microorganisms that upon administration in adequate amounts provide various health benefits to the host. Probiotics are “lactic acid-producing bacteria” as they release large amounts of organic acids, particularly lactic acids, in their surrounding environment. Although the acids produced by probiotics are beneficial for gastrointestinal and vaginal health, the acidogenic nature of probiotics has raised concerns among dental professionals, especially concerning their effect on the enamel and dentin. Previous studies have found that probiotics can lower the pH of the saliva and cause essentia...
Source: Odontology - September 9, 2023 Category: Dentistry Source Type: research
Assessment of dentin mineral density of human teeth using micro-computed tomography in two kilovoltage levels
AbstractA significant advancement in micro-computed tomography ( μCT) translational application in endodontics has occurred. The purpose of the study was to assess the applications of a new method to measure dentin mineral density (DMD) and to compare between 2 levels of energy sources. Two sets of standardized porous solid hydroxyapatite (HA) phantoms, with min eral densities of 0.25 g/cm3 and 0.75 g/cm3, respectively were embedded in aluminum foil. The μCT homogeneity and noise in the HA phantoms were analyzed using 50 kV and 100 kV energy sources. DMD of 66 extracted human teeth was measured at the cemento-enamel...
Source: Odontology - September 9, 2023 Category: Dentistry Source Type: research
Relationships of physical constitution with occlusal force and masticatory performance in adults with natural dentition
This study aimed to clarify whether physical constitution affects masticatory function. A total of 251 healthy adults with completely natural dentition participated in this study. Height, weight, and body mass index (BMI) were used as parameters representing physical constitution, and the amount of glucose eluted from chewed gummy jelly and maximum occlusal force was used as parameter representing masticatory function. Handgrip strength was also measured. After comparing each parameter between male and female participants, the relationship between physical constitution and masticatory function was investigated in the combi...
Source: Odontology - September 9, 2023 Category: Dentistry Source Type: research
Sodium hypochlorite against Enterococcus faecalis biofilm in dentinal tubules: effect of concentration, temperature, and exposure time
This study aimed to evaluate the effectiveness of two sodium hypochlorite concentrations at different exposure times and temperatures againstEnterococcus faecalis biofilms of varying ages in human dentinal tubules. Dentin blocks were infected withE. faecalis for either 3 days or 3 weeks of incubation. Subsequently, the samples were exposed to sterile water, 2%, and 5.25% sodium hypochlorite for 3 and 10 min at 20 °C and 60 °C . Viability staining and confocal laser scanning microscopy were used to assess the proportion of killed bacteria in the dentinal tubules after exposure. There are no significant differences in ...
Source: Odontology - August 30, 2023 Category: Dentistry Source Type: research
Predictors of complications associated with unerupted maxillary canines: a cone beam computed tomography study
AbstractTo detect predictive factors for the occurrence of complications associated with unerupted maxillary canines (C). A total of 83 cone beam computed tomograms (CBCT), made from November 1, 2021 to October 31, 2022, have met the inclusion criteria, whereby 110 unerupted C were detected. Independent variables were: gender, age, and C position. Outcome variables were detected complications: external root resorption (ERR) and dilaceration of adjacent tooth, ERR and dilaceration of C, dentigerous cyst, canine ankylosis, and adjacent teeth malposition. Chi-square test and logistic regression analysis were used to examine t...
Source: Odontology - August 29, 2023 Category: Dentistry Source Type: research
Simulating porcelain firing effect on the structure, corrosion and mechanical properties of Co –Cr–Mo dental alloy fabricated by soft milling
This study aims at evaluating the effect of simulating porcelain firing on the microstructure, corrosion behavior and mechanical properties of a Co –Cr–Mo alloy fabricated by Metal Soft Milling (MSM). Two groups of Co-28Cr-5Mo specimens (25 × 20 × 3 mm) were prepared by MSM: The as-sintered (AS) specimens and the post-fired (PF) specimens that were subjected to 5 simulating porcelain firing cycles without applying the ceramic mas s onto their surface. Phase identification by X-ray Diffraction (XRD), microstructure examination by optical microscopy and Scanning Electron Microscopy combined with Energy-Dispers...
Source: Odontology - August 29, 2023 Category: Dentistry Source Type: research
Evaluation of changes in root canal length and accuracy of the electronic apex locator during different stages of endodontic treatment and retreatment
This study evaluated changes in the root canal length (RCL) and the accuracy of the electronic apex locator (EAL) during the different stages of endodontic treatment and retreatment. Fifty-six mesial root canals of mandibular molars were selected. The actual root canal length (AL) of the canals was obtained by inserting a size 15 hand file up to the apical foramen, under magnification. The electronic lengths were obtained at the “APEX” mark of Root ZX II, using an alginate model. Both measurements were performed at three different stages of the initial root canal treatment—unflared, flared, and concluded—and at two...
Source: Odontology - August 29, 2023 Category: Dentistry Source Type: research
Comparison of the sealing ability amongst orthograde apical plugs of mineral trioxide aggregate plus, mineral trioxide aggregate repair HP, and Biodentine after root resection: a bacterial leakage study
This study aimed to analyse the effect of root-end resection on the sealing ability of orthograde apical plugs of three root-end filling materials (MTA Repair HP, Biodentine, MTA Plus) using the bacterial leakage method and compare it with the retrograde root-end filling technique. Eighty-four extracted mandibular premolar teeth with single root and single straight canals were selected and randomly divided into two main experimental groups (n = 36) depending on the apical plug placement technique and a control: Group I: orthograde technique, followed by root-end resection; Group II: retrograde root-end filling techniqu...
Source: Odontology - August 26, 2023 Category: Dentistry Source Type: research
Effect of shade and opacity on color differences and translucency of resin composite veneers over lighter and darker substrates
AbstractTo evaluate color differences ( ΔE00) and translucency parameters (TP) from mono, bi, and trilayer resin composite veneers using different opacities and shades of resin composite over lighter and darker simulated tooth-colored substrates. Mono, bi, and trilayer veneers (1.5 mm) (n = 12) were made using two shades (A1 and A2) and three opacities (enamel, body, and dentin) of resin composite over simulated lighter (A1) and darker (C4, and C4+) tooth-colored substrates. CIEDE2000 formula was used to calculate ΔE00 considering simulated tooth-colored substrate versus opacities in distinct mono, bi, and trilayer...
Source: Odontology - August 17, 2023 Category: Dentistry Source Type: research
Effects of smoking on the salivary and GCF levels of IL-17 and IL-35 in periodontitis
AbstractPeriodontitis progression is associated with a host response in which anti-inflammatory and pro-inflammatory cytokine networks play a key role. Smoking is involved in the production of various mediators. The study aims to evaluate the levels of IL-17 and IL-35 in saliva and gingival crevicular fluid (GCF), to investigate the effects of smoking on these cytokines in smoker and non-smoker periodontitis patients. 19 smokers with periodontitis, 20 non-smokers with periodontitis, and 18 periodontally healthy subjects were included in the study. Periodontal clinical indexes were recorded and the levels of IL-17 and IL-35...
Source: Odontology - August 11, 2023 Category: Dentistry Source Type: research
Effectiveness of different supplementary protocols for remaining filling material removal in endodontic reintervention: an integrative review
AbstractThe aim of this study was to perform an integrative review to identify the most effective supplementary protocols used after filling material (FM) removal and root canal reinstrumentation, during endodontic reintervention. The literature search was performed on the electronic databases PubMed and Latin American and Caribbean Health Sciences Literature (LILACS), using a combination of specific scientific descriptors. Selection criteria accepted articles published in English, Spanish and Portuguese languages, up to August 2021, involving in vitro and ex vivo studies. After applying the eligibility criteria, 46 articl...
Source: Odontology - August 10, 2023 Category: Dentistry Source Type: research
Clinical performance comparison between lithium disilicate and hybrid resin nano-ceramic CAD/CAM onlay restorations: a two-year randomized clinical split-mouth study
AbstractA total of 20 lithium disilicate glass –ceramics (IPS e.max CAD, Ivoclar Vivadent) and 20 resin nano-ceramic (Voco Grandio Blocks) onlay restorations were performed in 20 patients using a split-mouth design to compare the two-year clinical performance of lithium disilicate and resin nano-ceramic onlay restorations. Both restorations we re evaluated at baseline, one-year, and two-year clinical follow-ups based on the modified United States Public Health Service (USPHS) criteria. Chi-square and Fisher’s exact tests showed no statistically significant difference between Voco Grandio and IPS e.max ceramic restorati...
Source: Odontology - August 5, 2023 Category: Dentistry Source Type: research
Salivary elemental signature of dental caries: a systematic review and meta-analysis of ionomics studies
AbstractTrace- and macro-chemical elements are crucial for cellular physiological functioning, and their alterations in biological fluids might be associated with an underlying pathological state. Hence, this study aimed to examine and summarize the published literature concerning the application of salivary ionomics for caries diagnosis. An extensive search of studies was conducted using PubMed, EMBASE, Web of Science, and Scopus, without any language and year restriction for answering the following PECO question: “In subjects (i.e., children, adolescents, or adults) with good systematic health, are there any variations...
Source: Odontology - August 1, 2023 Category: Dentistry Source Type: research
The effect of Par3 on the cellular junctions and biological functions of odontoblast-lineage cells
AbstractPerfect intercellular junctions are key for odontoblast barrier function. However, whether Partitioning defective-3 (Par3) is expressed in odontoblasts and its potential effects on odontoblast junctions are unknown. Herein, we investigated the effect of Par3 on cellular junctions and the biological behavior of odontoblast-lineage cells (OLCs). Whole-transcriptome sequencing was used to analyze the effects of Par3 on OLCs and the underlying molecular mechanism. Par3 was detected under physiological and inflammatory conditions in OLCs. To investigate the regulatory effect of Par3 on junctions between mouse OLCs, the ...
Source: Odontology - July 26, 2023 Category: Dentistry Source Type: research
