Video Experimental Relacionado

Updated: Feb 8, 2026

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities

Guided Endodontics: Three-Dimensional Planning and Template-Aided Preparation of Endodontic Access Cavities

Published on: May 24, 2022

Factores oclusales y conductuales asociados con fracturas radiculares verticales en dientes tratados

Piraya Sricharat¹, Napat Nalamliang², Thanomsuk Jearanaiphaisarn³

¹Residency Training Program in Endodontics, Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.

Journal of dentistry

|February 6, 2026

Abstracto

Objectives:

This study investigated clinical factors and oral functional behaviors associated with vertical root fractures (VRFs) in endodontically treated teeth (ETT).

Methods:

Forty-nine matched pairs of patients who attended the Graduate Endodontic Clinic between 2017 and 2024 were included. Each pair consisted of one patient with a VRF in an ETT and one matched control without a VRF. Matching was based on sex, age, tooth type, and duration since root canal treatment. Retrospective clinical and radiographic data were collected to assess tooth-related factors, including root canal filling length, type of restoration, type of post, adjacent teeth, and opposing dentition. At the recall visit, occlusal characteristics, tooth wear, bony exostosis, and mandibular plane angle were examined and patients completed structured interviews regarding oral functional behaviors at the time of VRF detection. Univariable logistic regression was performed, and variables with p < 0.05 were entered into a multivariable model. Mandibular angles were compared using independent t-tests.

Results:

Metal posts, protrusive occlusal interference, unilateral chewing, and frequent intake of hard or sticky foods were significantly associated with VRF. Multivariate analysis confirmed all of these factors, except sticky food intake, as independent predictors, whereas the remaining variables were not significant.

Conclusions:

Unilateral chewing and consumption of hard foods were strongly associated with VRFs, along with the presence of metal posts and protrusive occlusal interference.

Clinical Significance:

Assessing occlusal patterns, masticatory behaviors, and post type in endodontically treated teeth is important. Early identification and management of these factors may help reduce VRF occurrence and improve long-term prognosis.

Palabras clave:

Factores clínicos Dientes tratados endodónticamente Factores funcionales Hábitos parafuncionales Estudio retrospectivo Factores de riesgo Fractura radicular vertical

Más Videos Relacionados

Dynamic Navigation in Endodontics: Guided Access Cavity Preparation by Means of a Miniaturized Navigation System

Dynamic Navigation in Endodontics: Guided Access Cavity Preparation by Means of a Miniaturized Navigation System

Published on: May 5, 2022

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material

Published on: December 20, 2024

Videos de Conceptos Relacionados

Teeth

Teeth

The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...

Sign Test for Matched Pairs

Sign Test for Matched Pairs

The sign test for matched pairs offers a robust method for comparing two paired samples, often for the effects of an intervention in one of them. This method is very useful in situations where the underlying distribution of the data is unknown. The test compares two related samples—often pre- and post-treatment measurements on the same subjects—to determine if there are significant differences in their median values.
To conduct the sign test, we first calculate the differences in...

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches

Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...

Vertical Curve: Problem Solving

Vertical Curve: Problem Solving

Vertical curves provide the transition between two roadway grades, ensuring safety, comfort, and functionality. Calculating elevations at specific stations along the curve involves several systematic steps based on the curve's geometry and provided design parameters.The vertical curve is defined by its length, grades, Point of Vertical Intersection (P.V.I.) location, and P.V.I. elevation. The stations of the Point of Vertical Curvature (P.V.C.), where the curve begins, and the Point of Vertical...

Introduction to Vertical Curves

Introduction to Vertical Curves

Vertical curves are parabolic transitions that connect different grades on highways and railroads, ensuring a smooth alignment between back and forward tangents. The back tangent represents the initial grade, while the forward tangent defines the subsequent grade. These curves can be symmetrical, with equal tangent lengths, or nonsymmetrical, with varying lengths. The key points defining a vertical curve include the Point of Vertical Intersection (P.V.I.), where the tangents meet; the Point of...

Primary and Secondary Growth in Roots and Shoots

Primary and Secondary Growth in Roots and Shoots

Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.