AIM To develop and evaluate a reproducible intrinsic discolouration model in vitro, based on tea, which would allow the effectiveness of bleaching to be evaluated. METHOD The crown portions of extracted human third molars were sectioned bucco-lingually in half. Colour assessments were made at baseline, post staining and post whitening using a standard clinical shade guide (SG), a shade vision...

INTRODUCTION Shade is one of the most important attributes when evaluating the success of a restoration. Several factors can influence the visual shade matching process, and therefore the outcome of the final restoration. OBJECTIVES 1. to assess the importance of clinical experience on shade matching accuracy; 2. to assess the influence of two standard light sources on the ability to match sh...

STATEMENT OF THE PROBLEM The literature is limited on the detailed description of the practice of Irish general dentists in the provision of crowns. PURPOSE OF THE STUDY To review the provision of crowns by dentists in Ireland and identify opportunities for improving current clinical practices. MATERIALS AND METHODS A questionnaire was posted to 500 general dentists selected randomly from t...