Dental News Articles

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. ...

Dr. Chems Belkhir: Associate Professor of Endodontics Dr. Asma Arous: Private  clinician Dr. Mohammed Semir Belkhir : Professor of Endodontics and chairman Abstract Introduction The objective of this study was to evaluate the adhesion quality of a two-step total-etch adhesive system, to mild fluorosed enamel, by two different etching protocols. Materials and methods Thirteen human teeth (molars and premolars) showing a mild fluorosis (TFI 1-3) according to Thylstrup and Fejerskov index were used. On each tooth two amelo-dentinal Class II box-only cavities were prepared. The distal cavities were etched once for 30 seconds using orthophosphoric acid at 37%. The mesial cavities were etched twice for 30 seconds using orthophosphoric acid at 37%. Following the obturation with resin composite, thermocyling, infiltration with methylene blue and sectioning in the mesio-distal direction, the teeth were observed with ...