Introduction: The objective of this study was to evaluate dentinal defects formed by new rotary system - Protaper next™ (PTN).
Materials And Methods: Sixty single-rooted premolars were selected. All specimens were decoronated and divided into four groups, each group having 15 specimens. Group I specimens were prepared by Hand K-files (Mani), Group II with ProTaper Universal (PT; Dentsply Maillefer), Group III with Hero Shaper (HS; Micro-Mega, Besancon, France), and Group IV with PTN (Dentsply Maillefer). Roots of each specimen were sectioned at 3, 6, and 9mm from the apex and were then viewed under a stereomicroscope to evaluate presence or absence of dentinal defects.
Results: In roots prepared with hand files (HFs) showed lowest percentage of dentinal defects (6.7%); whereas in roots prepared with PT, HS, and PTN it was 40, 66.7, and 26.7%, respectively. There was significant difference between the HS group and the PTN group (P < 0.05).
Conclusion: All rotary files induced defects in root dentin, whereas the hand instruments induced minimal defects.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4450526 | PMC |
| http://dx.doi.org/10.4103/0972-0707.154045 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Alendronate partially rescues the periodontal defects in OIM mouse model of osteogenesis imperfecta.
Sci Rep
January 2025
Department of Growth and Development, University of Nebraska Medical Center, 4000 East Campus Loop South, 68583-0740, Lincoln, NE, US.
Osteogenesis imperfecta (OI) is a fairly common generalized connective disorder characterized by low bone mass, bone deformities and impaired bone quality that predisposes affected individuals to musculoskeletal fragility. Periodontal ligament (PDL)-alveolar bone and PDL-cementum entheses' roles under OI conditions during physiological loading and orthodontic forces remain largely unknown. In addition, bisphosphonates (e.
View Article and Find Full Text PDFProgressive Pre-Eruptive Coronal Resorption Associated With Enamel Degeneration: A Case Series.
J Dent Child (Chic)
September 2024
Department of Orthodontics, University of Marburg School of Dentistry, Marburg, Germany.
The purpose of this article is to present three cases of a rare phenomenon called pre-eruptive coronal resorption (PCR), which occurs in teeth with enamel degeneration. In the first case, the enamel defects occurred due to ectodermal dysplasia, which represents the first documented case of a patient with ectodermal dysplasia who underwent PCR. In the other two cases, the enamel defects occurred due to amelogenesis imperfecta.
View Article and Find Full Text PDFComparative evaluation of coronally advanced flap and semilunar coronally repositioned flap, using platelet-rich fibrin in Miller's Class I recession defects: A randomized clinical trial.
J Indian Soc Periodontol
December 2024
Department of Periodontology, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India.
Background: For a periodontist, treating recession is always a proud moment and a challenging task. The current trial aimed at comparing and clinically evaluating semilunar coronally repositioned flap (SCRF) and coronally advanced flap (CAF) procedures combined with platelet-rich fibrin (PRF) in the management of Miller's Class I recession defects.
Materials And Methods: Thirty-six recession sites were randomly divided into the CAF or SCRF groups.
Progress in the pathogenic mechanism, histological characteristics of hereditary dentine disorders and clinical management strategies.
Front Cell Dev Biol
December 2024
Hospital of Stomatology, Jilin University, Changchun, China.
Hereditary dentine disorders are autosomal dominant diseases that affect the development and structure of dentine, leading to various dental abnormalities and influencing the individual's oral health. It is generally classified as dentinogenesis imperfecta (DGI) and dentine dysplasia (DD). Specifically, DGI is characterized by the abnormal formation of dentine, resulting in teeth that are discolored, translucent, and prone to fracture or wear down easily.
View Article and Find Full Text PDFNon-Invasive Strategies for Remineralization and Hypersensitivity Management in Molar-Incisor Hypomineralization-A Systematic Review and Meta-Analysis.
J Clin Med
November 2024
Centre for Translational Medicine, Semmelweis University, 1085 Budapest, Hungary.
Molar-incisor hypomineralization (MIH) is an enamel defect affecting molars and incisors, often leading to hypersensitivity, enamel breakdown, and increased caries risk. Non-invasive treatments, such as casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) and fluoride varnish, show potential in remineralizing affected enamel and reducing sensitivity, but their efficacy is still debated. This study systematically reviews and analyzes the effectiveness of CPP-ACP and other non-invasive agents in improving remineralization and reducing hypersensitivity in MIH-affected teeth.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!