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Pennington Booth posted an update 6 months, 3 weeks ago
Since the introduction of digitization in cephalometrics, orthodontics has experienced a new horizon. Vardenafil molecular weight Technological advancement is usually followed by comparisons between the methods.
The aim of this study was to compare values of cephalometric analysis performed by CephNinja and NemoCeph for Downs’s analysis.
This prospective study was conducted using 100 diagnostic digital lateral cephalograms taken from the same machine. The samples were collected by non-probability convenience sampling procedures.
The diagnostic images were cropped to standard lateral cephalogram film dimension; a scale image was placed on the top for calibration, numbered 1-100 for identification and was saved in Joint Photographic Experts Group (JPEG) format. A laptop with mouse-controlled cursor was used for NemoCeph and an android phone controlled with finger touch screen was used for CephNinja. Landmark identification for cephalometric analysis was carried out as demanded by the software.
One-way analysis of variance (ANOVA) was used for comparison between the variables, and one-way ANOVA followed by
test was carried out to check the level of significance using Statistical Package for the Social Sciences software program, version 11.0.
The result showed that the difference of mean values obtained using the two software showed no statistical significance for 70% variables.
-axis, incisor occlusal plane angle, and the upper incisor to A-Pog showed a statistically significant difference.
CephNinja presented a satisfactory result with NemoCeph, and can be used interchangeably with confidence.
CephNinja presented a satisfactory result with NemoCeph, and can be used interchangeably with confidence.
Adhesive restoration does not depend primarily on the configuration of the shape of the cavity. Under varying loading conditions, it is essential to know the stress concentration and load transfer mechanism for distinct cavity shapes. The aim of this study was to evaluate and compare the biomechanical characteristics of various cavity shapes, namely oval, elliptical, trapezoidal, and rectangular shapes of class V cavities on mandibular premolars restored with amalgam, glass ionomer cement, and Cention N using three-dimensional (3D) finite element analysis.
A 3D prototype of a mandibular premolar was generated by Digital Imaging and Communications in Medicine (DICOM) images obtained from the cone beam computed tomography and imported to 3D modeling software tool, SpaceClaim. The four distinct load magnitudes of 100, 150, 200, and 250N were applied as a pressure load perpendicular to the lingual plane of the lingual cusp of the occlusal surface (normal load) and at 45° to same (oblique load). The stress distribution patterns and the maximum von Mises stresses were analyzed and compared.
The occlusal stresses were distributed from the force loading point in an approximate actinomorphic pattern, and when the force load was close to the margin, the stress was much greater.
Ovoid cavity showed lesser stress concentration and deformation for each of the tested restorative material.
Ovoid cavity showed lesser stress concentration and deformation for each of the tested restorative material.
The increased prevalence of fluorosis has led to a search for biomarkers of fluoride exposure. Among the biomarkers of sub-chronic exposure to fluoride, hair, fingernails, and toenails have the advantage of being noninvasively collected, easily transported, and stored.
The objective of this study was to comparatively evaluate coronal hair, fingernails, and toenails as biomarkers of fluoride exposure from drinking water; the study was designed as a population-based observational cross-sectional study.
A population-based observational cross-sectional study was conducted in 60 children (20 subjects per group) of ages 12-17 years in three villages of Nilakottai block, Dindigul district, Tamil Nadu, India (Thomaspuram, Bangalapatti, and Singampatti). The fluoride concentration in the household drinking water was analyzed and compared with the fluoride content in the coronal hair, fingernail, and toenail clippings, which was estimated by potentiometric method (fluoride-ion-selective electrode) and expressed il hair, fingernails, and toenails are useful biomarkers for both sub-chronic and chronic fluoride exposure from drinking water. Due to ample sample availability and the highest fluoride content, toenails are the most suitable biomarkers of fluoride exposure from drinking water.
The objective of this study was to determine the effect of suture-less anterior releasing incisions on postoperative wound healing following surgical removal of impacted mandibular third molars.
A total of 112 patients were included in the study. Group 1 had 56 patients in which the anterior releasing incision was not sutured postoperatively, and group 2 had 56 patients, in whom the anterior releasing incision was sutured. The two groups were compared in terms of pain, swelling, and trismus at 1 day, 3 days, and 7 days postoperatively. The Univariate Type III Repeated-Measures ANOVA Assuming Sphericity was used to compare the two modes of treatments at different time points. The periodontal healing distal to the second molar was assessed on the first day and at 2 months following the surgical intervention. The independent
test was used to compare the periodontal healing between the two groups at two time points.
No significant difference was observed between the two groups for pain and trismus (
> 0.05). However, the swelling was significantly greater in group 2 as compared to group 1 (
< 0.001). Periodontal healing was better in group 2, which showed lower periodontal probing depth distal to the mandibular second molar, compared to group 1 (
< 0.05).
Suture-less anterior releasing incision decreases the postoperative swelling and edema, but the periodontal healing was poor when compared to the sutured anterior releasing incision cases. The type of closure technique did not have any significant influence on pain and trismus.
Suture-less anterior releasing incision decreases the postoperative swelling and edema, but the periodontal healing was poor when compared to the sutured anterior releasing incision cases. The type of closure technique did not have any significant influence on pain and trismus.