27. Analysis in minimal invasive approach in axial reduction with chamfer finishing line from students of FDM – Plovdiv
M.Rusev, J.Georgieva, G.Todorov, D.Ivanova
MU – Plovdiv, FDM, Department of Prosthetic Dentistry
In our daily practice we often use to prepare teeth with chamfer finishing line.
It was organized a competition in the Department of Prostetic Dental Medicine, Faculty of Dental Medicine, Medical University of Plovdiv. The aim of it was to make preparation of natural and phantom teeth with axial reduction with chamfer finishing line. Students from 4th -5th course were participating.
Aim: To find out the differences in angles of preparation according to the long axis .
Мaterials and methods: We used working plaster models with natural and phantom teeth fixed in .Silicone keys made before preparation were used to check the reduction of teeth. They were cut in two planes facio-lingual and mesio-distal. The preparation was made with preselected burs. Afterward we took pictures from distance of 6 centimetres from the objects. We fixed some important reference points on the pictures: long axis ,a point of tangency to tooth surface. Angles of preparation were measured.
Conclusions: This method gave us the possibility to find out the deviation of degrees of preparated tooth surfaces.
Keywords: chamfer finishing line, angle of preparation, natural and phantom teeth