Purpose
To systematically review the clinical performance of restorative materials after pulp therapy of carious primary teeth. It is part 2 of a systematic review on the clinical effectiveness of ...restorative materials for the management of carious primary teeth supporting the European Academy of Paediatric Dentistry (EAPD) guideline development.
Methods
Four electronic databases were systematically searched up to December 28th, 2020. Randomised controlled clinical trials (RCTs) on restorative materials for the restoration of carious primary teeth after pulp therapy were included. Failure rate, annual failure rate (AFR) and reasons for failure were recorded. Studies were sorted by restorative materials. The Cochrane Risk of bias tool for randomised trials (RoB 2.0) was used for quality assessment.
Results
After identification of 1685 articles and screening of 41 papers from EAPD review group 1, 5 RCTs were included. Restored primary molars with pulpotomy presented the following AFRs: composite resin (CR) 0%, preformed metal crowns (PMCs) 2.4–2.5%, resin-modified glass-ionomer cement combined with CR 3.8%, compomer 8.9%, and amalgam 14.3%. Maxillary primary incisors receiving pulpectomy exhibited AFRs of 0–2.3% for composite strip crowns (CSCs) depending on the post chosen. Reasons for failure were secondary caries, poor marginal adaptation, loss of retention and fracture of restoration. All studies were classified as high risk of bias. Meta-analyses were not feasible given the clinical/methodological heterogeneity amongst studies.
Conclusion
Considering any limitations of this review, CR and PMCs can be recommended for primary molars after pulpotomy, and CSCs for primary incisors receiving pulpectomy. However, a need for further well-designed RCTs was observed.
Aim
To present the application and the outcome of the regenerative endodontic therapy (RET) in a series of symptomatic immature mandibular molars with pulp necrosis and apical periodontitis and to ...review the relevant literature for the documentation of the procedure as a potential treatment option.
Methods
Three young male patients were referred with pain in the left mandibular region resulting from pulp necrosis and apical periodontitis of the first permanent molar. Regenerative endodontic approach was performed for the complete resolution of the lesions and the thickening of the apical root canal walls. The databases of Medline, Pubmed and Google Scholar were also searched for articles in which a regenerative approach has been undertaken for the endodontic management of immature permanent molars with pulp necrosis and apical periodontitis.
Results
Follow-up examinations showed that the teeth remained functional without any signs or symptoms. Final radiographic examination at 12, 18 and 36 months, respectively, revealed complete resolution of the lesions and complete apical closure in the two out of three cases. The search of the literature revealed the existence of only 25 clinical articles in which necrotic immature molars were treated by the regenerative approach. The total number of the treated teeth were 46.
Conclusions
Regenerative endodontic approach may be applied in posterior non-vital molar teeth with a possible favorable outcome. However, the literature support for the documentation of the procedure as a predictable and reproducible treatment option in posterior immature molar teeth is at present limited.
Purpose
The European Academy of Paediatric Dentistry (EAPD) has developed this best clinical practice guidance to help clinicians manage deep carious lesions in primary teeth.
Methods
Three expert ...groups conducted systematic reviews of the relevant literature. The topics were: (1) conventional techniques (2) Minimal Intervention Dentistry (MID) and (3) materials. Workshops were held during the corresponding EAPD interim seminar in Oslo in April 2021. Several clinical based recommendations and statements were agreed upon, and gaps in our knowledge were identified.
Results
There is strong evidence that indirect pulp capping and pulpotomy techniques, and 38% Silver Diamine Fluoride are shown to be effective for the management of caries in the primary dentition. Due to the strict criteria, it is not possible to give clear recommendations on which materials are most appropriate for restoring primary teeth with deep carious lesions. Atraumatic Restorative Technique (ART) is not suitable for multi-surface caries, and Pre-formed Metal Crowns (PMCs) using the Hall technique reduce patient discomfort. GIC and RMGIC seem to be more favourable given the lower annual failure rate compared to HVGIC and MRGIC. Glass carbomer cannot be recommended due to inferior marginal adaptation and fractures. Compomers, hybrid composite resins and bulk-fill composite resins demonstrated similar values for annual failure rates.
Conclusion
The management of deep carious lesions in primary teeth can be challenging and must consider the patient’s compliance, operator skills, materials and costs. There is a clear need to increase the use of MID techniques in managing carious primary teeth as a mainstream rather than a compromise option.
Background/Aim
Greek dentists are facing a new era of a globally continuous effort to improve the first‐aid management and long‐term treatment outcome of traumatic dental injuries (TDI). In Greece, ...where the basic and clinical research in the field of dental trauma has been limited until recently, assessing the attitudes and therapeutic strategies of Greek dentists for dental trauma is of great importance. The aim of this study was to evaluate the knowledge attitudes and therapeutic approaches of Greek dentists in different clinical scenarios of TDI.
Materials and methods
A cross‐sectional study was conducted among 448 dentists. A questionnaire‐based survey of demographic characteristics, attitudes, and a scenario‐based knowledge test, of TDI, which was used to formulate a “Dental Trauma Knowledge Score” with a 0‐8 score range, was administered. Mann‐Whitney U tests (for two categories variables) and Kruskal‐Wallis tests (for more than two categories variables) were performed.
Results
The median knowledge score was 5.0 (IQR: 4‐7), a level considered as “Acceptable.” Knowledge scores were found to significantly differ by age group, with the younger dentists presenting the highest scores. Dentists with a self‐evaluation as “Acceptable” had significantly higher scores. Most of the dentists would refer for CBCT in severe trauma cases. A significant association was found between younger ages and on awareness of the mobile application ToothSOS. Female dentists had significantly higher scores compared to males when asked about avulsion management.
Conclusion
An acceptable level of knowledge on TDI management was revealed among dentists in Greece. Higher knowledge scores were observed among younger dentists.
Alternative Astronomical FITS imaging Varsaki, Eleni E; Nectaria A B Gizani; Fotopoulos, Vassilis ...
arXiv (Cornell University),
09/2012
Paper, Journal Article
Odprti dostop
Astronomical radio maps are presented mainly in FITS format. Astronomical Image Processing Software (AIPS) uses a set of tables attached to the output map to include all sorts of information ...concerning the production of the image. However this information together with information on the flux and noise of the map is lost as soon as the image of the radio source in fits or other format is extracted from AIPS. This information would have been valuable to another astronomer who just uses NED, for example, to download the map. In the current work, we show a method of data hiding inside the radio map, which can be preserved under transformations, even for example while the format of the map is changed from fits to other lossless available image formats.
Mon.Not.Roy.Astron.Soc. 358 (2005) 1061-1068 We present the results of the first successful observations of the Pie Town
link with the Very Large Array (VLA) at 74 MHz on Hercules A. The improvement
...in resolution from 25 arcsec to 10 arcsec resolves the helical- and ring-like
features seen at higher frequencies. We also present new high dynamic range
images of this powerful radio galaxy at 325 MHz. Our low frequency observations
confirm the multiple outburst interpretation of the spectral index differences
at high frequencies. Comparison between our radio and ROSAT X-ray data does not
reveal any association between the X-ray emission from the cluster and the
radio lobes. There are no extra regions of radio emission at 74 MHz.
We present the results of the first successful observations of the Pie Town link with the Very Large Array (VLA) at 74 MHz on Hercules A. The improvement in resolution from 25 arcsec to 10 arcsec ...resolves the helical- and ring-like features seen at higher frequencies. We also present new high dynamic range images of this powerful radio galaxy at 325 MHz. Our low frequency observations confirm the multiple outburst interpretation of the spectral index differences at high frequencies. Comparison between our radio and ROSAT X-ray data does not reveal any association between the X-ray emission from the cluster and the radio lobes. There are no extra regions of radio emission at 74 MHz.
The kpc-scale radio source population Augusto, Pedro; Gonzalez-Serrano, J. Ignacio; Edge, Alastair C ...
arXiv (Cornell University),
10/1999
Journal Article
Odprti dostop
New Astron.Rev. 43 (1999) 663-667 We are conducting a multi-wavelength (radio, optical, and X-ray)
observational campaign to classify, morphologically and physically, a sample of
55 flat-spectrum ...radio sources dominated by structure on kpc-scales. This
sample contains 22 compact-/medium-sized symmetric object candidates, a class
of objects thought to be the early stages of the evolution of radio galaxies.
The vast majority of the remaining objects have core-plus-one-sided-jet
structures, half of which present sharply bent jets, probably due to strong
interactions with the interstellar medium of the host galaxies. Once the
observational campaign is completed, we will constrain evolutionary theories of
radio galaxies at their intermediate stages and possibly understand the physics
of the hypothesized narrow line region in active galactic nuclei, given our
advantageous statistical position.
We are conducting a multi-wavelength (radio, optical, and X-ray) observational campaign to classify, morphologically and physically, a sample of 55 flat-spectrum radio sources dominated by structure ...on kpc-scales. This sample contains 22 compact-/medium-sized symmetric object candidates, a class of objects thought to be the early stages of the evolution of radio galaxies. The vast majority of the remaining objects have core-plus-one-sided-jet structures, half of which present sharply bent jets, probably due to strong interactions with the interstellar medium of the host galaxies. Once the observational campaign is completed, we will constrain evolutionary theories of radio galaxies at their intermediate stages and possibly understand the physics of the hypothesized narrow line region in active galactic nuclei, given our advantageous statistical position.
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