منابع مشابه
Tooth Preparation Using Guide Pin Instruments and the Biological Width
Previous surveys have shown that subgingival restoration margins generally lead to significant inflammation of the marginal periodontium 6, 13, 16, 17 and, inter alai, trauma of the “biological width”. This term is defined as the area of the coronal periodontium of the limbus aleovaris, which consists of the connective tissue and epithelial attachment as well as the gingival sulcus (Figure 1a)....
متن کاملProfile characteristics of cut tooth surfaces developed by rotating instruments.
THE irregularity of the cut tooth surfaces resulting from the shaping of cavities would appear to have a twofold significance. First, these irregularies should have some effect on the adaptation of the specified filling material to the cavity walls, and second, they may tend to undermine or weaken groups of enamel rods at the eavo-surface margins, thus resulting in a failure of the tooth struct...
متن کاملEffect of rotary cutting instruments on the resin-tooth interfacial ultra structure: An in vivo study
OBJECTIVES To evaluate the effect of cutting teeth with different types of burs at various speeds on surface topography of tooth surface and interfacial gap formation at resin-tooth interface. MATERIAL AND METHODS The human molars were divided into seven groups: Diamond bur in airrotor (DA) & micromotor (DM), crosscut carbide bur in airrotor (CCA) & micromotor (CCM), plain carbide bur in airr...
متن کاملSurface appearance of tooth cavity walls when shaped with various instruments.
SINCE the introduction of faster operating speeds for rotating instruments, there has been an increased concern regarding the effects of various instruments on the cut tooth surface. Very little information on this subject exists in the literature. The work of Street' describing the effects of instruments on enamel walls represents the most complete report in the current literature. It is the p...
متن کاملDoes wisdom tooth provide tooth germs for tooth regeneration?
Introduction Regenerating a tooth completely in human oral cavity is not achieved by current studies yet. Here, we have conceived a man-induced method to construct a teeth germ which might be used to regenerate a tooth in vivo. This idea was generated by traits of the development of the compound odontoma, a benign tumour of tooth malformation. This is a kind of developmental tooth malformation,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Lancet
سال: 1841
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(02)97431-3