Purpose: This study was performed to evaluate and compare the radiopacity of dentin, enamel, and 8 restorative composites on conventional radiograph and digital images with different resolutions.
Materials And Methods: Specimens were fabricated from 8 materials and human molars were longitudinally sectioned 1.0 mm thick to include both enamel and dentin. The specimens and tooth sections were imaged by conventional radiograph using #4 sized intraoral film and digital images were taken in high speed and high resolution modes using a phosphor storage plate. Densitometric evaluation of the enamel, dentin, restorative materials, a lead sheet, and an aluminum step wedge was performed on the radiographic images. For the evaluation, the Al equivalent (mm) for each material was calculated. The data were analyzed using one-way ANOVA and Tukey's test (p<0.05), considering the material factor and then the radiographic method factor, individually.
Results: The high speed mode allowed the highest radiopacity, while the high resolution mode generated the lowest values. Furthermore, the high resolution mode was the most efficient method for radiographic differentiation between restorative composites and dentin. The conventional radiograph was the most effective in enabling differentiation between enamel and composites. The high speed mode was the least effective in enabling radiographic differentiation between the dental tissues and restorative composites.
Conclusion: The high speed mode of digital imaging was not effective for differentiation between enamel and composites. This made it less effective than the high resolution mode and conventional radiographs. All of the composites evaluated showed radiopacity values that fit the ISO 4049 recommendations.
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http://dx.doi.org/10.5624/isd.2013.43.3.145 | DOI Listing |
PLoS One
December 2024
Postgraduate Program in Biophotonics Medicine Applied to Health Sciences, Universidade Nove de Julho, Sao Paulo, Brazil.
Objective: This study aims to evaluate the efficacy of photodynamic therapy as an adjunct to conventional endodontic treatment in patients with apical periodontitis and fistulas. In this study, a fistula is characterized as a pathological conduit originating from the infected region at the root apex of the tooth, traversing the oral mucosa, and extending to the external surface of the gingiva. This pathological condition frequently complicates the management of endodontic infections, thereby necessitating the evaluation of supplementary therapeutic interventions.
View Article and Find Full Text PDFJAMA Oncol
December 2024
Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York.
Importance: Stereotactic body radiation therapy (SBRT) for spinal metastases improves symptomatic outcomes and local control compared to conventional radiotherapy. Treatment failure most often occurs within the epidural space, where dose is constrained by the risk of radiation myelitis (RM). Current constraints designed to prevent RM after spine SBRT are derived from limited data.
View Article and Find Full Text PDFFront Oral Health
December 2024
Department of Preventive Dentistry, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand.
Introduction: Chemo-mechanical caries removal (CMCR) offers an alternative to conventional drilling for carious dentin removal, but limited evidence exists on its long-term effects on treating caries in primary teeth. The primary aims of this study were to compare CMCR to drilling in terms of restoration status and the presence of secondary caries after 24 months.
Methods: A randomized, parallel-group, single-blinded, controlled trial was conducted in Thailand.
J Med Imaging Radiat Sci
December 2024
School of Health Sciences (HESAV), HES-SO University of Applied Sciences and Arts Western Switzerland, Av. de Beaumont 21, 1011 Lausanne, Switzerland; Bureau d'Echange des Savoirs pour des pratiques exemplaires de soins (BEST) a JBI Center of Excellence, Switzerland.
Aims: This scoping review aimed to (1) map the global evidence on extended and advanced clinical practices (ACP) performed by radiographers, and (2) provide an overview of the pillars (clinical practice, leadership and management, education, and research) they relate to, as well as the radiology areas and the geographical location where they were developed.
Methods: Articles were searched in MEDLINE, CINAHL and Embase, and grey literature in ProQuest Dissertation and Theses. Studies concerning radiographers or healthcare professionals with an equivalent title (e.
J Oral Implantol
December 2024
Department of Prosthodontics and Crown Bridge, Faculty of Dental Sciences King George's Medical University, U.P. Lucknow.
A multifaceted study compared transgingival (flapless) implant placement with conventional flapped placement, which employed clinical, radiographic, biochemical, and patient-centered parameters. The study was approved by the institutional ethics committee and was conducted according to the ethical standards in the 1964 Declaration of Helsinki and its amendments. Seventy-five implants were placed, 37 by flapless method (group 1) and 38 by flapped method (group 2).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!