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Tooth Staining and Discoloration: a review of literature. Part I: Etiology and Classification

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Dental News Volume XXII, Number IV, December, 2015



By Dr. Sawsan Nasreddine,Dr. Fida Sayah, Dr. Fady Kassir, and Pr. Mounir Doumit, 
of the Lebanese University, School of Dentistry







Abstract

Discoloration of the tooth can erode the sparkle from a smile. There are many factors that contribute to tooth staining. It is important to understand that in some cases staining can be prevented but in others it cannot.  There are two types of tooth discoloration: extrinsic which affects teeth from the outside and intrinsic which affects the teeth from the inside.
The purpose of this article is to review literature on the etiologies and classification of tooth staining and discoloration.
Key words: Etiology, classification, extrinsic discoloration, intrinsic discoloration

Introduction
The appearance of the dentition is of concern to a large number of people seeking dental treatment and the color of the teeth is of particular cosmetic importance. Tooth discoloration is usually esthetically displeasing and p…

Adhesion to Moderate Fluorosed Enamel: Silorane Composite versus Methacrylate Composite: in vitro study.

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Dental News Volume XXII, Number IV, December, 2015


By Dr. Chems Belkhir, Dr. Afef Karmandi, Dr. Rim Mabrouk, Dr. Najet Aguir, and Dr. Mohammed Semir Belkhir







Introduction
Dental fluorosis is a hypomineralisation of the dental hard tissues induced by an excessive intake of fluoride occurring during odontogenesis.4 Fluorosis is clinically manifested, depending on individual susceptibility, by opaque white spots, lines following the perikymata direction, or wavy yellowish and brownish striations of the enamel. Later, the opaque surfaces develop and turn into chalky and the enamel develops small cavities. After tooth eruption, the enamel pits and fissures turn into brown or black.22 A fluorosed tooth requires a particular therapeutic. The fluorosed enamel is hard, brittle and acido-resistant.4, 22 These features represent a real problem for resin composite bonding to this enamel which is little studied. Few years ago, a low shrinkage restorative material of polymerization; silorane composite; w…