Accuracy of an electrical impedance device in estimation of remaining dentin thickness vs cone beam computed tomography
The objective of this study is to compare the estimated values of remaining dentin thickness (RDT) recorded by a newly introduced electrical impedance device (Prepometer) with cone beam computed tomography (CBCT) and histological in situ measurement. A total number of thirty human molars were used in this study. A deep class I cavity was prepared. The RDT for each cavity was measured with Prepometer in three different points (mesial, middle, and distal). Same specimens were imaged with high-resolution Cone Beam Computed Tomography CBCT (0.1 mm voxel size) using I CAT next Generation Machine (Imaging Science International...
Source: Odontology - January 11, 2022 Category: Dentistry Source Type: research
After-effects of acute footshock stress on sleep states and rhythmic masticatory muscle activity during sleep in guinea pigs
This study investigated the effects of acute footshock stress (FS) on the occurrence of rhythmic masticatory muscle activity (RMMA) during sleep in guinea pigs. Animals were prepared for chronic recordings from electroencephalogram, electrooculogram and electromyograms of neck and masseter muscles. The signals were recorded for six hours on the two successive days: the first day with stress-free condition (non-FS condition) and the second day with acute FS (FS condition). Sleep/wake states and RMMA were scored visually. Sleep variables and the frequency of RMMA occurring during non-rapid eye movement (NREM) sleep were comp...
Source: Odontology - January 9, 2022 Category: Dentistry Source Type: research
Effects of smoking on the bone alkaline phosphatase in peri-implant crevicular fluid and implant stability quotient around implants before loading
AbstractWe aimed to examine the implant stability quotient(ISQ), alveolar bone level measurements (ABL), and bone alkaline phosphatase (BALP) in peri-implant crevicular fluid (PICF) around implants in smokers and non-smokers before loading in 3 months. 44 dental implants were placed into smoker and non-smoker patients equally. ISQ was measured at baseline and 3 months after surgery. The levels of PICF BALP and alveolar bone were measured. ISQ values significantly increased in smokers and non-smokers in the 3rd month (p < 0.05). ABL measurements were lower at 3 months compared to baseline in both groups (p <...
Source: Odontology - January 6, 2022 Category: Dentistry Source Type: research
Immuno-histopathologic evaluation of mineralized plasmatic matrix in the management of horizontal ridge defects in a canine model (a split-mouth comparative study)
In conclusion, MPM accelerates the formation of superior new bone quality when used in the treatment of HRDs. (Source: Odontology)
Source: Odontology - January 5, 2022 Category: Dentistry Source Type: research
Swallowing dysfunction and the onset of fever in older residents with special care needs: a thirteen-month longitudinal prospective study
AbstractA decline in swallowing function is frequently observed among older residents in nursing homes. We investigated whether swallowing dysfunction was related to the onset of fever in such individuals. Older residents aged ≥ 65 years from three nursing homes were included in this prospective study conducted from July 2017 to May 2019. The follow-up period was 13 months. The outcome was fever incidence in relation to the swallowing dysfunction. Baseline data on the activities of daily living, cognitive functio n, swallowing function, respiratory function, tongue pressure, and comorbidity conditions were collect...
Source: Odontology - January 1, 2022 Category: Dentistry Source Type: research
An in vitro senescence model of gingival epithelial cell induced by hydrogen peroxide treatment
In conclusion, a senescence model of gingival epithelial cells induced by hydrogen peroxide treatment was established which could be employed to study age-related periodontal diseases. (Source: Odontology)
Source: Odontology - January 1, 2022 Category: Dentistry Source Type: research
The ability of different irrigation methods to remove mixtures of calcium hydroxide and barium sulphate from isthmuses in 3D printed transparent root canal models
AbstractThe purpose is to evaluate the efficacy of different irrigation techniques in the removal of various calcium hydroxide [Ca(OH)2] and barium sulfate [BaSO4] formulations from three isthmuses in 3-dimensional (3D) printed molar root canal models. 3D printed transparent models were designed, fabricated, and filled with pure Ca(OH)2 paste, Ca(OH)2–BaSO4 8:1 paste, Ca(OH)2–BaSO4 1:1 paste, pure BaSO4 paste, all in water, and Diapaste. Open-ended needle irrigation (ONI) at 5 and 15 mL/min, double-side-vented needle irrigation (DNI) at 5 mL/min, the GentleWave system (GW), PiezoFlow (PF), and passive ultrasonic act...
Source: Odontology - January 1, 2022 Category: Dentistry Source Type: research
Comparison of imaging modalities in the diagnosis of external cervical resorption (ECR): an in-vitro study
This study aims to assess if diagnostic ability to detect ECR lesions with the two modalities was different and if there was a change in the diagnosis when CBCT was used. A human skull, including the mandible was used for this study. The teeth were randomly allocated to the different subcategories, then pre and post-preparation radiographs with CBCT were taken. Statistical analysis was done using IBM SPSS version 16.0 (SPSS Inc., Chicago, IL, USA). The study sample was composed of 60 participants, the overall sensitivity of intraoral radiographs was significantly lower than CBCT. When the participants were told the radiogr...
Source: Odontology - January 1, 2022 Category: Dentistry Source Type: research
Implant-to-nasal floor dimensions projected by panoramic radiographs in the maxillary incisor –canine region: implications for dental implant treatment
AbstractTo make a comparison of panoramic radiography (PAN) and cone-beam computed tomography (CBCT) determinations of implant-to-nasal floor dimensions (INFD) in the anterior maxillary region, and to assist in determining in which tooth regions additional radiation exposure involved in CBCT scans is justifiable. Data related to INFD by PAN (PAN-D) at implant-to-nasal floor sites (central incisor, lateral incisor, canine) were gathered using 141 implant sites from 119 adult patients. INFD was estimated employing the CBCT technique as a reference method. PAN analysis equations were created for estimation of INFD by CBCT (CB...
Source: Odontology - January 1, 2022 Category: Dentistry Source Type: research
The use of hydroxyapatite toothpaste to prevent dental caries
AbstractDissolution of hydroxyapatite from the tooth structure at low pH can lead to the irreversible destruction of enamel and dentin, which if left untreated can result in pain and tooth loss. Hydroxyapatite toothpastes contain hydroxyapatite particles in micro- or nanocrystalline form that have been shown to deposit and restore demineralized enamel surfaces. As such, they are currently being explored as a fluoride-free anti-caries agent. This narrative review article aims to summarize the recent findings of the research investigating the remineralization potential of HAP toothpaste in vitro, in situ and in vivo, as well...
Source: Odontology - November 22, 2021 Category: Dentistry Source Type: research
Physicochemical and microbiological assessment of a dental adhesive doped with cashew nut shell liquid
In conclusion, the CNSL, anacardic acid and cardol showed antibacterial effects against oral bacteria and, the incorporation of s ubstances did not reduce the performance of the adhesive. (Source: Odontology)
Source: Odontology - November 20, 2021 Category: Dentistry Source Type: research
Identification of a familial cleidocranial dysplasia with a novel RUNX2 mutation and establishment of patient-derived induced pluripotent stem cells
In this study, we identified a novel CCD-specificRUNX2 mutation and established iPSCs with this mutation. Biopsies were obtained from familial CCD patients and mutation analyses were performed through Sanger sequencing and next generation sequencing. CCD-specific human iPSCs (CCD-hiPSCs) were established and maintained under completely defined serum, feeder, and integration-free condition using a non-integrating replication-defective Sendai virus vector. We identified the novel mutationRUNX2_c.371C>G and successfully established CCD-hiPSCs. The CCD-hiPSCs inherited the same mutation, possessed pluripotency, and showed t...
Source: Odontology - November 15, 2021 Category: Dentistry Source Type: research
Clinical and microbiological effects of ultrasonically activated irrigation versus syringe irrigation during endodontic treatment: a systematic review and meta-analysis of randomized clinical trials
This study aimed to systematically review clinical and microbiology-related effects of ultrasonically activated irrigation (UAI) compared to syringe irrigation (SI) during endodontic treatment. Electronic databases searching and manual searching were conducted. Only randomized clinical trials (RCTs) were included comparing UAI to SI. The RoB 2.0 Cochrane tool was used for risk-of-bias (RoB) assessment. The main outcomes were postoperative pain, treatment failure, and microbiology-related outcomes. Qualitative and quantitative analyses, wherever applicable, were performed. Risk ratios (RR) and [standardized] mean difference...
Source: Odontology - November 3, 2021 Category: Dentistry Source Type: research
Root form and canal anatomy of maxillary first premolars: a cone-beam computed tomography study
AbstractThe aim of this study was to evaluate the root and canal morphology of permanent maxillary first premolars in a Polish population using cone-beam computed tomography scanning (CBCT) and to compare the classifications by Vertucci and Ahmed et al. Images of 350 maxillary first premolars were analyzed. Scans were obtained from 226 patients: 131 women and 95 men. The root canal configurations were classified according to Vertucci and a new system by Ahmed et al. In addition, the number of roots and the level where roots bifurcated were identified. The results were submitted to statistical analysis. Most maxillary first...
Source: Odontology - October 29, 2021 Category: Dentistry Source Type: research
Correction to: Synergistic effect of thymoquinone and nystatin in the treatment of oral candidiasis; an in vitro study
(Source: Odontology)
Source: Odontology - October 29, 2021 Category: Dentistry Source Type: research
