Related Experiment Video
Updated: Jan 22, 2026

Denver Papillae Protocol for Objective Analysis of Fungiform Papillae
Published on: June 8, 2015
Papilla management in sub-gingival, interproximal, direct composite restoration: a key step to success
Oliver Bailey1, Christopher O'Connor2
1School of Dental Sciences, Newcastle University, Restorative Department, Framlington Place, Newcastle upon Tyne, UK. oliver.bailey1@newcastle.ac.uk.
Abstract:
Correctly managing interdental papillae is a key step in producing satisfactory, interproximal, direct composite restorations. This article discusses techniques to facilitate the restoration of sub-gingival cavities and suggests a decision-making workflow that can be applied in this challenging situation.
Related Concept Videos
Ecological Succession
Restorative Care
Key Techniques in Microbiology
Key Elements for Plant Nutrition
Classifying Matter by Composition
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
Rate-Determining Steps
In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This slowest step is called the rate-limiting step (or rate-determining step). A reaction cannot proceed faster than its slowest step, and hence, the rate-determining step limits the overall reaction rate.
The concept of rate-determining step can be understood from the analogy of a 4-lane freeway with a short-stretch of traffic-bottleneck caused due to...

