The effect of diabetes mellitus on the shear bond strength of composite resin to dentin and enamel
This study aimed to determine the effect of two types of diabetes on the shear bond strength of enamel and dentin, by  using the single bond universal bonding system. Sixty specimens [from 15 teeth; 5 from each group—non-diabetic (ND), Diabetic type I (D1), and Diabetic type II (D2)], were prepared with equal amounts of dentin (n = 5) and enamel (n = 5). Enamel specimens (E20) were etched with 37% phosphoric acid, for 20 s, and dentin specimens (D15) were etched for 15 s. A standard shear bond strength test was performed on all specimens. Their failure modes were also studie...
Source: Odontology - July 27, 2021 Category: Dentistry Source Type: research

Inter-measurement variation of masticatory performance test using gummy jelly
AbstractThe purpose of this study was to clarify the inter-measurement variation of the masticatory performance test. Forty healthy adults were divided into group A (10 males and 10 females), who did not chew the test food before experiment, and group B (10 males and 10 females) who chewed the test food before the experiment. Subjects were asked to chew a gummy jelly for 20  s on the habitual chewing side, and the amount of glucose extraction was measured. The test was repeated three times with an interval of 1 min in both groups (Group A: A1, A2, A3; Group B: B1, B2, B3). In both groups A and B, the difference b...
Source: Odontology - July 20, 2021 Category: Dentistry Source Type: research

Influence of two carbodiimides on the bond strength of universal adhesives to dentin
AbstractThe pretreatment of dentin with cross-linking agents during bonding procedures has been proposed to improve the mechanical properties of the collagen in the hybrid layer and reduce the biodegradation of the adhesive interface. The aim of this study was to evaluate the influence of pretreatment with two carbodiimides on the dentin bond strength of universal adhesives, after thermocycling. Three universal adhesives in the self-etching mode were used (Single Bond Universal —SBU, Clearfil Universal—CLU and Ambar Universal—ABU). A self-etching adhesive system (Clearfil SE Bond—CSB) was used as co...
Source: Odontology - July 19, 2021 Category: Dentistry Source Type: research

Peri-implant tissue augmentation by volume-stable collagen matrix transplantation: a study of dog mandibles
AbstractThe aim of this study was to investigate histologically the amount of peri-implant tissue augmentation after volume-stable porcine collagen matrix transplantation. Six male beagle dogs were used in the experiment. P2, P4, and M1 distal roots were extracted under general anesthesia. After 6  months, implants were placed in the same sites, and volume-stable porcine collagen matrix transplantation was performed. Impressions were taken at 1 and 2 weeks and at 1, 2, and 3 months after transplantation. The dogs were euthanized at 3 months, and their mandibles were removed and scanned us ing micro-comp...
Source: Odontology - July 19, 2021 Category: Dentistry Source Type: research

Vertical root fracture resistance and dentinal crack formation of root canal-treated teeth instrumented with different nickel –titanium rotary systems: an in-vitro study
AbstractTo compare the vertical root fracture (VRF) resistance of root canal-treated teeth instrumented with four different nickel –titanium (NiTi) rotary file systems and examine the dentinal crack pattern and direction using a new classification. Eighty mature mandibular premolars were selected and decoronated, leaving 13 mm of the root. The root samples were mounted in acrylic resin and divided randomly into five groups o f different NiTi file systems: Group 1—control, Group 2—T-Pro, Group 3—HyFlex CM, Group 4—TG6 and lastly Group 5—ZenFlex. Samples in Group 2 and Group 3 were in...
Source: Odontology - July 16, 2021 Category: Dentistry Source Type: research

Effect of sandblasting and/or priming treatment on the shear bond strength of self-adhesive resin cement to CAD/CAM blocks
AbstractThe aim of this study was to investigate the effect of two different priming agents and/or sandblasting on the shear bond strength of self-adhesive resin cement to the resin composite for core build-up to CAD/CAM blocks. A CAD/CAM ceramic block (GN I CERAMIC BLOCK, GC) and a CAD/CAM resin composite block (CERASMART 270, GC), a self-adhesive resin cement (G-CEM ONE, GC) and two different primers, i.e., a multipurpose primer (MP; G-Multi Primer, GC) and a ceramic primer (CP; Ceramic Primer II, GC), were examined. Five different surface treatments with priming and/or sandblasting and no surface treatment (control) wer...
Source: Odontology - July 16, 2021 Category: Dentistry Source Type: research

Prevalence of bifid and trifid mandibular canals with unusual patterns of nerve branching using cone beam computed tomography
This study reported a high prevalence (54%) of canal branching, which reinforces the importance of cone beam CT in pre-surgical planning. (Source: Odontology)
Source: Odontology - July 15, 2021 Category: Dentistry Source Type: research

Arrest of root caries with an adjuvant chlorhexidine –fluoride varnish over a 12-months observation period: a QLF-analyzed, placebo-controlled, randomized, clinical trial (RCT)
This study aimed at evaluating the effectiveness of an adjuvant chlorhexidine –fluoride varnish (Cervitec F) for prevention and arrest of root caries on elderly participants using quantitative light-induced fluorescence (QLF). 23 participants with two or three non-cavitated root carious lesions were included and assigned to three groups of different varnishes (CF: Cervitec F, P: placebo, DP: Duraphate). Agents were applied once to root surface at baseline and in follow-up after 3, 6 and 9 months. The lesions were assessed clinically and with QLF. QLF-images were analyzed regarding fluorescence loss (ΔF), l...
Source: Odontology - July 13, 2021 Category: Dentistry Source Type: research

Clinical, radiographic and restorative parameters for short tuberosity implants placed in smokers: a retrospective study with 5  year follow-up
This study aimed to estimate and compare the clinical, radiographic, and restorative parameters around short tuberosity implants (STIs) placed in cigarette smokers (CS) and never smokers (NS). In this 60-month follow-up retrospective study, a total of 50 (37 males  + 13 females) individuals who had received 82 dental implants were included. These participants were categorized into two groups as follows: (i) Group-1: 25 self-reported systemically healthy CS with 43 STIs; and (ii) Group-2: 25 self-reported systemically healthy NS with 39 STIs. In both group s, peri-implant plaque index (PI), probing depth (PD),...
Source: Odontology - July 9, 2021 Category: Dentistry Source Type: research

Evolution of endodontic medicine: a critical narrative review of the interrelationship between endodontics and systemic pathological conditions
AbstractEndodontics has gained emphasis in the scientific community in recent years due to the increase in clinical and in animal models studies focused on endodontic medicine, which aims to evaluate the interrelationship between systemic and periapical tissues pathological conditions. These studies have shown that systemic changes can boost the pathogenesis of endodontic infection, favoring its development and progression. A contrary relationship is reported in numerous studies that affirm the potential of endodontic infection to trigger systemic damage and may lead to the worsening of pre-existing pathologies. Recently, ...
Source: Odontology - July 8, 2021 Category: Dentistry Source Type: research

Consecutive tooth agenesis patterns in non-syndromic oligodontia
AbstractAgenesis of two or more consecutive adjacent permanent teeth (consecutive tooth agenesis, CTA) is a serious manifestation of oligodontia requiring long-term, multi-disciplinary treatment. Therefore, the present study investigated the characteristics of the CTA pattern in orthodontic patients with non-syndromic oligodontia. Using panoramic radiographs, the number of agenetic permanent teeth excluding third molars in non-syndromic orthodontic patients was evaluated, and patients with six or more agenetic teeth (oligodontia group,n = 97) and with one to five agenetic teeth (hypodontia group,n =&th...
Source: Odontology - July 8, 2021 Category: Dentistry Source Type: research

Gender differences in masticatory function in elderly adults with natural dentition
AbstractThe purpose of this study was to clarify the presence or absence of gender differences in masticatory function in elderly adults with completely natural dentition. Fifty-six elderly adults aged 65  years and older (elderly group) and 60 young adults in their 20–40 s (young group) with natural dentition participated in this study. The maximum occlusal force on the habitual chewing side was measured using dental prescale. Next, the amount of glucose extraction when subjects chewed a gummy j elly on their habitual chewing side for 20 s was measured. The maximum occlusal force and masticatory perfo...
Source: Odontology - July 6, 2021 Category: Dentistry Source Type: research

Universal adhesive: the effect of different simulated pulpal pressure fluids and bonding modes to dentin
AbstractThe aim of this study was to evaluate the effect of SPP with either fetal bovine serum (FBS) or deionized water (DW) on the bond strength ( μTBS) of a Universal adhesive to dentin, in both etch-and-rinse (ER) and self-etch (SE) modes. The kinematic viscosity (cSt) of FBS and DW was measured at 25 °C ± 0.1 ºC. Seventy-two sound human molars were sectioned and randomly divided into three groups according to the SPP conditions: ( 1) Control (0 cm H2O), (2) SPP (15  cm H2O) with FBS, (3) SPP (15  cm H2O) with DW. Each group was subdivided (n = 10) ...
Source: Odontology - July 2, 2021 Category: Dentistry Source Type: research

Effects of porcelain veneering methods on conformity of the marginal and internal fit of three-unit zirconia framework
AbstractThe purpose of this study is to investigate the effects of porcelain veneering methods on the marginal and internal fit of a three-unit zirconia framework. A zirconia master model, in which the lower-left second premolar and the second left molar were used as the abutment, was obtained using an intraoral scanner. Based on the data, three-unit zirconia frameworks for fabricating all-ceramic bridges were designed and milled (FW group). Two types of all-ceramic bridge were fabricated by veneering porcelain onto these frameworks using the press-over technique (P group) and the layering technique (L group). The replica ...
Source: Odontology - June 4, 2021 Category: Dentistry Source Type: research

Evaluation of C-shaped canals in mandibular second molars of a selected patient group using cone beam computed tomography: prevalence, configuration and radicular groove types
AbstractThe aim of the present study was to examine the prevalence, symmetry and configurations of C-shaped canals and radicular groove types in mandibular second molars according to age and sex in a Turkish sub-population using cone beam computed tomography (CBCT). In total, 674 CBCT images (368 females and 306 males, aged 18 –76 years) of 1348 mandibular second molars were evaluated. The symmetry, configuration of C-shaped root canals, radicular groove types with age and sex were noted. One sample chi-square test and chi-square test were used to determine statistically significant differences. The statistical signi...
Source: Odontology - June 3, 2021 Category: Dentistry Source Type: research

Can transfer type and implant angulation affect impression accuracy? A 3D in vitro evaluation
AbstractImpression accuracy is fundamental to achieve a passive fit between implants and the superstructure. Three transfer types were tested to evaluate the differences in impression accuracy and their efficiency in case of different implant angles. A master model with four implant analogues placed at 0 °, 15° and 35° was used. 27 impressions were taken with three different types of impression coping: closed tray technique coping (CT), open tray technique coping (COT) and telescopic open tray coping (TOT). The impressions were poured. Analogues were matched with scan bodies to be scanned and exp orted in STL. ...
Source: Odontology - June 1, 2021 Category: Dentistry Source Type: research

Antibacterial effect of silver nanoparticles mixed with calcium hydroxide or chlorhexidine on multispecies biofilms
AbstractThe purpose is to evaluate the antibacterial effects of the silver nanoparticles (AgNPs) (Nanografi, METU Teknokent, Ankara, Turkey) mixed with calcium hydroxide (Ca(OH)2) (Ultracal XS, Ultradent, St Louis, US) or chlorhexidine gel (CHX) (Gluco-Chex, Cerkamed, Stalowa Wola, Poland) against a multispecies biofilm, by confocal laser scanning microscopy (CLSM) and culture-based analysis. Dentine blocks were inoculated withEnterococcus faecalis,Streptococcus mutans,Lactobacillus acidophilus andActinomyces naeslundii for 1  week. Infected dentine blocks were randomly divided into groups according to medication; sal...
Source: Odontology - May 28, 2021 Category: Dentistry Source Type: research

Odontology prize 2021
(Source: Odontology)
Source: Odontology - May 25, 2021 Category: Dentistry Source Type: research

A deep transfer learning approach for the detection and diagnosis of maxillary sinusitis on panoramic radiographs
This study serves as a reference when adapting source models to other institutions. (Source: Odontology)
Source: Odontology - May 23, 2021 Category: Dentistry Source Type: research

Periodontal therapy on the oral health-related quality of life of obese and non-obese individuals
The objective of the present study was to assess the impact of one-stage full-mouth disinfection (OSFMD) therapy on the oral health-related quality of life (OHRQL) of obese and non-obese individuals with periodontitis. Fifty-five obese and thirty-nine non-obese patients were evaluated. The questionnaires oral impacts on daily performance (OIDP) and oral health and quality of life (OHQoL) were given to all patients at baseline and 6  months after periodontal treatment by the OSFMD protocol. For statistical analysis, Chi-square, the two-factor repeated-measures ANOVA, and correlation tests were used. At baseline, mean g...
Source: Odontology - May 23, 2021 Category: Dentistry Source Type: research

Light and viscosity effects on the curing potential of bulk-fill composites placed in deep cavities
AbstractTo determine the influence of light curing units (LCUs) and material viscosity on the degree of conversion (DC) of bulk-fill (BF) resin-based composites (RBCs) placed in deep cavity preparations. Four LCUs were tested: Valo cordless, Bluephase-G2, Poly wireless and Radii-cal. Light irradiance was determined at 0  mm and 6 mm distance to the reading sensor. The following RBCs were considered: Filtek BF, Filtek BF Flow, Opus BF, Opus BF Flow, Tetric N-Ceram BF and Surefil SDR Flow. Sirius-Z was used with the incremental technique. DC (n = 3) was evaluated by spectroscopy both at top and bottom...
Source: Odontology - May 23, 2021 Category: Dentistry Source Type: research

Effect of photo-thermal acceleration on in-office bleaching
AbstractThe purpose is to evaluate the effect of photo-thermal acceleration on in-office bleaching efficiency using a bleaching agent without photocatalysts in vitro. Artificially discolored bovine lower incisors were prepared, and the mixed in-office bleaching material contained hydrogen peroxide 23% was applied by following treatment for 10  min: high-(HI group) and low-intensity LED lights (LI group), oven at 38 °C (OV group), and room temperature at 23 °C (RT group). Color was measured before and after bleaching and color difference (∆E*) was calculated. The data were statistically analyzed usi...
Source: Odontology - May 15, 2021 Category: Dentistry Source Type: research

Antibacterial efficacy of copper-added chitosan nanoparticles: a confocal laser scanning microscopy analysis
AbstractThe aim of this study was to evaluate the antibacterial efficacy of copper added chitosan nanoparticles (CU-CNPs) as an irrigation solution with different irrigants in terms of eliminatingEnterococcus Faecalis (E. faecalis) from the root canals. Fifty mandibular premolar teeth were prepared and infected withE. faecalis for 21  days. After the incubation period, samples were randomly divided into a control group irrigated with distilled water and 4 experimental groups (n = 10) irrigated with as follows, %6 NaOCl, %6 NaOCl + %9 editronate (HEBP), Chitosan nanoparticles (CNPs), and CU-...
Source: Odontology - May 14, 2021 Category: Dentistry Source Type: research

Effect of epigallocatechin-3-gallate and thermal cycling on the bond strength of resin cements to the root dentin
This study evaluated the effect of epigallocatechin-3-gallate (EGCG) solution and thermal cycling on the bond strength (BS) of fiber posts to the root dentin using two different resin cements (conventional or self-adhesive). One hundred and forty-four bovine roots were endodontically treated. After post space preparation, specimens were randomly divided into six groups (n = 24) according to dentin pretreatment [distilled water, 0.05% EGCG solution or 2% chlorhexidine (CHX) solution] and resin luting agent used for fiber post cementation (RelyX ARC or RelyX U200-3 M ESPE). Then, the samples were separated into...
Source: Odontology - May 8, 2021 Category: Dentistry Source Type: research

Effect of green tea-loaded chitosan nanoparticles on leathery dentin microhardness
AbstractThe purpose of this study was to assess the effect of a chitosan-based  nanoformulation containing green tea on leathery (remaining) dentin subsurface microhardness. Size distribution, polydispersity index (PDI) and zeta potential (mV) of nanoformulations were previously determined by dynamic light scattering (DLS). Human dentin specimens were exposed to Streptococcus mutans for 14 d. Soft dentin were selectively removed by Er:YAG laser (n = 30) or bur (n = 30). Remaining dentin was biomodified with chitosan nanoparticles (Nchi,n = 10) or green tea-loade...
Source: Odontology - May 8, 2021 Category: Dentistry Source Type: research

Effects of laser modalities on shear bond strengths of composite superstructure to zirconia and PEEK infrastructures: an in vitro study
We examined the effects of erbium-doped yttrium aluminum garnet (Er:YAG), neodymium-doped yttrium aluminum garnet (Nd:YAG), and potassium titanyl phosphate (KTP) laser applications on the shear bond strength (SBS) of nanohybrid composite superstructures to zirconia and PEEK infrastructures. Zirconia and PEEK specimens were prepared with CAD/CAM technology in accordance with ISO 11405 standards. The disc-shaped samples were randomly separated into four groups (n = 8) according to applied laser type: no treatment and Er:YAG, Nd:YAG, and KTP lasers. Nanohybrid composite resin was applied as a veneering material ...
Source: Odontology - May 1, 2021 Category: Dentistry Source Type: research

Pulpal outcomes in orthodontic tooth movement in diabetes mellitus
AbstractDiabetes mellitus impairs angiogenesis and tissue reorganization during orthodontic tooth movement (OTM). Thus, this study evaluated pulpal outcomes in orthodontic tooth movement through metabolic changes in diabetes. Male Wistar rats were used, and the in vivo study design consisted of four groups (n = 10/group): C—non-diabetic animals not subjected to orthodontic tooth movement; D—diabetic animals not subjected to orthodontic tooth movement; OTM—non-diabetic animals subjected to orthodontic tooth movement; and D + OTM—diabetic animals subjected to orthodontic to...
Source: Odontology - April 29, 2021 Category: Dentistry Source Type: research

Effects of the prevention of medication-related osteonecrosis of the jaw by local administration of a dental pulp stem cell-conditioned medium to the rat tooth extraction socket
AbstractThe onset of osteonecrosis of the jaw, which is a side effect of bisphosphonates, often develops after tooth extraction; measures for its prevention have not yet been established. While treatment with systemic administration of bone marrow stem cell-derived conditioned medium for medication-related osteonecrosis of the jaw (MRONJ) has been reported, its preventive effects have not been clarified yet, and the high degree of invasiveness of bone marrow fluid collection remains an issue. Therefore, we created a rat model of MRONJ using BP zoledronic acid, used a dental pulp stem cell-conditioned medium (DPSC-CM), whic...
Source: Odontology - April 27, 2021 Category: Dentistry Source Type: research

Six-year clinical outcomes of implant-supported acrylic vs. ceramic superstructures according to the All-on-4 treatment concept for the rehabilitation of the edentulous maxilla
AbstractThe aim of the current study was to document the long-term clinical results of the use of two prosthetic techniques for the rehabilitation of completely edentulous maxillae according to the “All-on-Four” concept: Fixed, screw-retained prosthesis mounted on a chrome-molybdenum framework with (1) metal-ceramic veneers and (2) Acrylic prosthesis with acrylic resin prosthetic teeth. A total of 34 patients were assigned to subgroups according to their own preference of the superstructur e type (ceramics [n: 17] or acrylic resin [n: 17]). Prosthetic complications, marginal bone loss, plaque accumulation, blee...
Source: Odontology - April 10, 2021 Category: Dentistry Source Type: research

Effects of toothbrush abrasion on surface and antibacterial properties of hydroxyapatite –tryptophan complex with gray titania
AbstractPhotocatalysts have attracted attention in the medical field for their antibacterial effects. However, typical photocatalysts are activated by ultraviolet rays, which may have adverse effects. Therefore, we focused on a new photocatalyst that is activated by visible light, hydroxyapatite (HAp), and amino acid complex with gray titania, and evaluated its antibacterial effects againstPorphyromonas gingivalis and effect by toothbrushing. The test sample was a titanium alloy substrate, and four surface treatments were applied: (1) substrate only, (2) substrate with HAp complex, (3) substrate with HAp complex with gray ...
Source: Odontology - April 9, 2021 Category: Dentistry Source Type: research

Correction to: Microabrasion effect on enamel susceptibility to penetration of hydrogen peroxide: an experimental and computational study
In the original publication of the article, Eq.  1 was published incorrectly. (Source: Odontology)
Source: Odontology - April 8, 2021 Category: Dentistry Source Type: research

Adjunctive procedure with solvent mixtures in non-surgical endodontic retreatment: does it affect root dentin hardness?
AbstractThe aim of this study was to compare the effects of new irrigation solvent mixtures with Methyl ethyl ketone (MEK)/Tetrachloroethylene (TCE) and MEK/Orange oil (OOil), and different agitation techniques on dentin hardness. One hundred forty-four mandibular teeth were prepared and standardized, with each root ’s middle part transversely sectioned. Initial hardness was measured using a Vickers microhardness tester. Specimens were divided into four groups of agitation techniques (n = 36): no agitation; EndoActivator; IrriSafe; and XP-endo Finisher R. Each group was subdivided into six subgroups of ...
Source: Odontology - April 2, 2021 Category: Dentistry Source Type: research

MiR-200b suppresses TNF- α-induced AMTN production in human gingival epithelial cells
In this study, we have analyzed the effects of miR-200b on the expression of AMTN in human gingival epithelial (Ca9-22) cells. Total RNAs and proteins were extracted from Ca9-22 cells transfected with miR-200b expression plasmid or miR-200b inhibit or and stimulated by TNF-α (10 ng/ml, 12 h). AMTN and inhibitor of kappa-B kinase beta (IKKβ) mRNA and protein levels were measured by qPCR and Western blot. Human AMTN 3′-UTR that contains putative miR-200b target sites were cloned downstream of -353AMTN luciferase (LUC) plasmid. Ca9-22 cells were transfected with -353AMTN 3′-UTR LUC constructs ...
Source: Odontology - March 12, 2021 Category: Dentistry Source Type: research

Methylphenidate effects on mice odontogenesis and connections with human odontogenesis
AbstractThe purpose of this study is to evaluate the effects of Methylphenidate exposure on mice odontogenesis and connect them by bioinformatics with human odontogenesis. Thirty-two pregnant Swiss mice were divided into treated group and control group, which received, respectively, 5  mg/kg of Methylphenidate and saline solution from the 5th to the 17th day of pregnancy. The mouse embryos tooth germs were analyzed through optical microscopy, and the data collected were analyzed statistically by Fisher’s exact test. The presence and similarity of Methylphenidate-associated gen es (Pharmgkb database) in both orga...
Source: Odontology - March 12, 2021 Category: Dentistry Source Type: research

Fracture strength of non-invasively reinforced MOD cavities on endodontically treated teeth
AbstractThe purpose of this in-vitro study was to evaluate the fracture resistance and failure mode of non-invasively reinforced endodontically treated mandibular molars. Sixty freshly extracted defect-free mandibular molars were divided into four experimental groups with extensive MOD cavities on endodontically treated teeth with different restoration types and one control group with intact teeth (n  = 12). The groups were as follows: “Normal”: direct resin composite; “Ring”: glass fiber-reinforced strip (Dentapreg) wrapped around buccal and lingual walls followed by direct resin comp...
Source: Odontology - March 12, 2021 Category: Dentistry Source Type: research

Evaluation of shade correspondence between current monolithic CAD/CAM blocks and target shade tab by considering the influence of cement shade and restorative material thickness
AbstractIt was aimed to evaluate shade matching between novel CAD/CAM blocks and the A2 target shade tab by considering the influence of cement shade and restorative material thickness on the chromatic background. A total number of 120 rectangular-shaped specimens were subtracted from four different prefabricated CAD/CAM blocks [Vita Enamic (VE), Lava Ultimate (LU), GC Cerasmart (GC), and Vita Mark II (VMII)]. These specimens had thicknesses of 0.5  mm and 1.0 mm. Three different shades (A2, opaque, and translucent) of dual-polymerized resin cement were chosen. The dentin shade (A3.5) restorative composite founda...
Source: Odontology - March 12, 2021 Category: Dentistry Source Type: research

Opportunities for caries prevention using an ion-releasing coating material: a randomised clinical study
AbstractIon-releasing materials (containing fluoride and boron, for example) have shown caries-preventive effects in vitro. The purpose of the present study was to investigate the impact of multi-ion-releasing coating material on pH stabilisation, plaque accumulation and the bacterial composition of dental plaque during a time period of 90  days. The null hypothesis tested here was that the evaluated material would not show any differences in pH stabilisation, plaque accumulation or bacterial composition compared with control material.The study was carried out as a double-blind, split-mouth, randomised, controlled cli...
Source: Odontology - March 12, 2021 Category: Dentistry Source Type: research

Microabrasion effect on enamel susceptibility to penetration of hydrogen peroxide: an experimental and computational study
AbstractTo evaluate in vitro transenamel/transdentinal of penetration of H2O2 after microabrasive. Computational models were performed to verify peroxide penetration and evaluate if geometric modifications could affect in vitro results. Enamel/dentin blocks from bovine incisors were prepared and randomly divided into groups (n = 15) according with abrasive (35% phosphoric acid and pumice or 6.6% hydrochloric acid and silica) and bleaching agents (16% carbamide peroxide and 35% H2O2). From artificial pulp chambers, the H2O2 concentration was measured and SEM was used for surface morphology. Numerical models we...
Source: Odontology - March 11, 2021 Category: Dentistry Source Type: research

Epigallocatechin gallate affects the proliferation of human alveolar osteoblasts and periodontal ligament cells, as well as promoting cell differentiation by regulating PI3K/Akt signaling pathway
This study probed into the functions of EGCG treating periodontal diseases. Cultured hAOBs and hPDLCs were passaged and observed by microscopic examination, and alkaline phosphatase (ALP) and immumohistochemical staining were performed for verification. hAOBs and hPDLCs were treated with EGCG and LY294002  + EGCG, then the proliferation of the two cells was assayed by MTT. Mineralization of the treated hAOBs and hPDLCs was detected by ALP activity experiment and Alizarin Red S staining kit. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting were performed for the dete ction of the...
Source: Odontology - March 6, 2021 Category: Dentistry Source Type: research

Correction to: Effects of vasopressin on anesthetic response time and circulatory dynamics of lidocaine
In the original publication of the article, an unwanted asterisk was found in Fig. 3. The correct Fig. 3 is provided below. (Source: Odontology)
Source: Odontology - March 5, 2021 Category: Dentistry Source Type: research

Age-related changes in oral tactile and thermal sensation throughout adulthood
AbstractAlthough the life expectancy of women is over 80  years in many countries, oral sensation has scarcely been compared between adults ≥ 80 years and younger age groups. The purpose of this study was to clarify age-related changes in oral sensation throughout adulthood. After exclusion of individuals with factors that might have confounded so matosensory performance, 123 female participants were divided into four age groups: 20–39 years, 40–59 years, 60–79 years, and 80–96 years. Perceptions of tactile and thermal sensations were examined at points...
Source: Odontology - February 26, 2021 Category: Dentistry Source Type: research

Morphometric evaluation of cranial base and sella turcica in patients with bilateral agenesis of maxillary lateral incisors
AbstractThe aim of this paper is to evaluate the dimensions and morphology of cranial base and sella turcica in patients with bilateral agenesis of maxillary lateral incisors (BMLI). This retrospective study was conducted on lateral cephalometric radiographs of 34 female patients with BMLI (17.69  ± 2.96 years) and 34 female patients with complete dentation and skeletal Class 1 relationship serving as a control group (17.22 ± 2.2 years). Basicranial and maxillomandibular variables together with linear dimensions and morphology of sella turcica were evaluated. Differences ...
Source: Odontology - February 19, 2021 Category: Dentistry Source Type: research

Root canal sealers affect artifacts on cone-beam computed tomography images
AbstractThe purpose of this study was to evaluate the appearance of artifacts by four types of root canal filling sealers on cone-beam computed tomography (CBCT) images. Thirty standardized tooth models were given the radiopacity equivalent to human teeth, and root canal preparation was performed using WaveOne Gold. Root canal filling by a single-point method was performed using WaveOne Gold gutta-percha points and four types of root canal sealers: AH Plus (AH), CANALS (CA), BioRoot RCS (BR), and MTA Fillapex (MTA). Samples were taken by periapical radiography at 60  kV and scanned by CBCT at three tube voltages (70, ...
Source: Odontology - February 7, 2021 Category: Dentistry Source Type: research

Fluorescence intensities of composite resins on photo images
AbstractRecording fluorescence using flash photography, may help reduce time of capture and apply effectively in clinical practice. To test methods for visualizing composite resins fluorescence by direct digital photography. Sixty-four specimen discs (1.5  × 10 mm) were prepared from 8 different composite resin brands. Their CIELAB color coordinates (L*,a*,b*) and fluorescence were measured using a portable colorimeter and a fluorescence spectrophotometer. The mean of three measurements was recorded and then specimens were photographed by a DSLR camera with two different filters (365  nm and 4...
Source: Odontology - February 3, 2021 Category: Dentistry Source Type: research

The antimicrobial effect of different ozone protocols applied in severe curved canals contaminated with Enterococcus faecalis: ex vivo study
AbstractThe aim of this study was to evaluate 3 different irrigation protocols using ozone on monoculture biofilm ofEnterococcus faecalis. Fifty disto-buccal roots of maxillary first molars were instrumented up to the size 25.08, sterilized and then incubated withEnterococcus faecalis for 21  days for biofilm maturation in the root canal walls. After contamination, the initial collection (S1) was performed and the 50 samples were divided in 3 experimental groups (n = 15) and 1 positive control group (n = 5) as follows: Group1: Ozonated water (40 µg/ml); Group2: gaseous ozone (40&...
Source: Odontology - January 28, 2021 Category: Dentistry Source Type: research

An evaluation of peri-implant marginal bone loss according to implant type, surgical technique and prosthetic rehabilitation: a retrospective multicentre and cross-sectional cohort study
AbstractTo evaluate implant loss (IL) and marginal bone loss (MBL); follow-up period of up to 10  years after prosthetic loading. Retrospective multi-centre cross-sectional cohort study. Double analysis: (1) all the implants (n = 456) were analysed; (2) to allow for possible cluster error, one implant per patient (n = 143) was selected randomly. Statistical analysis: Spearman’s correlation coefficient; Kruskal–Wallis (post-hoc U-Mann–Whitney); Chi-square (post-hoc Haberman). (1) Analysing all the implants(456): IL was observed in patients with past periodontitis (6 vs. 2.2%,p 
Source: Odontology - January 26, 2021 Category: Dentistry Source Type: research

Calcium hydroxide/iodoform nanoparticles as an intracanal filling medication: synthesis, characterization, and in vitro study using a bovine primary tooth model
AbstractThe aims of this in vitro study were to synthesize, characterize, and evaluate the efficacy of a Calcium Hydroxide/Iodoform nanoparticles (CHIN) paste compared with Ultrapex as intracanal filling medication using an experimental model of bovine primary teeth. CH nanoparticle synthesis was performed via the simple hydrolysis technique of reacting calcium nitrate with sodium hydroxide. SEM –EDS and FT-IR analyses were used to characterize the obtained product. 30% of CH nanoparticles were combined with 40% of iodoform and 30% silicone oil to prepare an intracanal filling paste (CHIN). All endodontic procedures ...
Source: Odontology - January 26, 2021 Category: Dentistry Source Type: research

Comparison of oral microbiome profile of polymers modified with silver and vanadium base nanomaterial by next-generation sequencing
This study aimed to evaluate two methods of the incorporation of nanostructured silver vanadate decorated with silver nanoparticles (AgVO3) into acrylic resin and characterize the profile of early and late microbial communities in class and family taxonomic level by pyrosequencing. The specimens were made by adding different concentrations of AgVO3 (1, 2.5, and 5%) to the heat-activated acrylic resin by two methods: vacuum spatulation (VS) and polymeric film (PF). A control group (0%) without AgVO3 was also obtained for both methods. After 24  h and 7 days of incubation in human saliva, biofilm samples were colle...
Source: Odontology - January 22, 2021 Category: Dentistry Source Type: research

The histone deacetylase inhibitor, entinostat (MS-275), induces the odontogenic differentiation of an odontoblast-like cell line in the absence of an osteoblast mineralization medium
AbstractThe aim of this study was to determine whether histone deacetylase inhibitors (HDACi), including entinostat (MS-275), valproic acid (VPA), trichostatin A (TSA), and sodium butyrate (NaB), promoted the odontogenic differentiation of the odontoblast-like cell line, MDPC-23 in the absence of an osteoblast mineralization medium. The cells were cultured in basal medium (Dulbecco ’s modified Eagle medium) with and without (controls) the inhibitors. The cell viability and migration were assessed using the cell proliferation reagent WST-1 and a scratch wound healing assay, respectively. The mRNA expression levels of ...
Source: Odontology - January 21, 2021 Category: Dentistry Source Type: research

The existence of butterfly effect and its impact on the dentinal microhardness and crack formation after root canal instrumentation
AbstractTo compare the microhardness and crack formation in root dentine presented with butterfly effect in lower premolars. Sixty mature lower premolars were selected and divided into the control and experimental groups. Teeth in the experimental group were instrumented up to size 30/.04. The roots were cut horizontally into twelve parts of 1-mm-thick cross-section and were numbered accordingly. They were divided into coronal, middle, and apical root sections. Sections were then viewed under a microscope to determine the presence of butterfly effect and subsequently scored. 8 teeth from both control and experimental group...
Source: Odontology - January 17, 2021 Category: Dentistry Source Type: research