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Micro CT evaluation of marginal discrepancies of endocrown restored molars with different intrapulpal depths and materials of fabrication. (in-vitro study).
BMC Oral Health
January 2025
Faculty of dentistry, Ain Shams University, Cairo, Egypt.
Objective: The purpose of this study was to evaluate the effect of different preparation depths (0, 2 and 4 mm) of different restoration designs (classic endocrown design versus overlay design) on marginal adaptation of restorations fabricated of two different restorative materials (lithium disilicate and PEEK).
Materials And Methods: Sixty mandibular natural molars were collected as abutments for the restorations of this study, and grouped in three main groups of different cavity depths (0, 2 and 4). Each group was divided into two subgroups according to material of fabrication to (L) for lithium disilicate (IPS emax CAD, Ivoclar vivadent, Switzarland) and (P) for PEEK (Bio-hpp, Bredent, Germany).
[Clinical dilemma and indication selection of restoration for permanent tooth defects in adolescents].
Beijing Da Xue Xue Bao Yi Xue Ban
February 2025
Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.
Adolescence is defined as a population ranging from ten to nineteen years old. Permanent teeth in adolescents are of critical significance as they are actively involved in mastication, contribute to aesthetic appearance, play a role in pronunciation, and are integral to the growth and development of the stomatognathic system. Specifically, permanent teeth in adolescents comprise those with incomplete root development and those with complete root development but unstable gingival margin positions.
View Article and Find Full Text PDFThe need for better metrics for floor-tile topography: Conventional metrics correlate only modestly with shoe-floor friction.
Tribol Int
May 2024
Department of Bioengineering, University of Pittsburgh, 3700 O'Hara St., Benedum Hall Room 302, Pittsburgh, PA 15261.
Roughness metrics measured with stylus profilometry are commonly used to explain a floor's friction performance, yet these metrics inconsistently predict shoe-floor friction. While strong correlations have been shown for systematically modified flooring, the goal of this study is to address a gap regarding the predictive ability of these metrics across heterogeneous porcelain flooring products. The predictive ability of four roughness metrics on oily friction performance was assessed using 23 floors and 4 shoe designs.
View Article and Find Full Text PDFFracture Resistance and Initial Penetration Time of a Novel Zirconia Crown Design for Simplifying Future Endodontic Treatment: An In Vitro Study.
Dent J (Basel)
November 2024
Department of Prosthetic Dental Science, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia.
: This study aimed to investigate the fracture strength of a novel-designed Zirconia crown before and after access opening, and to evaluate the mode of fracture and the time needed for initial penetration through the crown. : This study involved the design and testing of 60 zirconia crowns, divided into three groups (20 crowns each) to compare different structural designs. Group 1 (Control) used a conventional full zirconia crown.
View Article and Find Full Text PDFDental Treatment Needs Among 16-Year-Old Patients with Cleft Lip and Palate: An Observational Study in Western Norway.
Cleft Palate Craniofac J
November 2024
Oral Health Centre of Expertise/Western Norway, Bergen, Norway.
Article Synopsis
- The study evaluated dental alignment and occlusion in 1019 patients with Cleft Lip and/or Palate (CL/P) at age 16, focusing on the need for future dental treatment.
- About one-third of the patients required further dental care, with complete CL/P cases showing a greater need compared to isolated cleft conditions.
- Key factors like missing teeth, oronasal fistula, and being male were linked to worse dental outcomes and increased treatment needs.
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