background and aims. a proper bond must be created between the existing composite resin and the new one for successful repair. the aim of this study was to compare the effect of three mechanical surface treatments, using diamond bur, air abrasion, and er,cr:ysgg laser, on the repair bond strength of the silorane-based composite resin. materials and methods. sixty cylindrical composite resin spe...

Aim: To evaluate the comparative efficacy of Polymer bur (Smartprep) and Conventional burs (Carbide bur & Diamond Points) in selective Dentin caries removal. Materials and method: 15 freshly extracted carious human premolars and molars were selected for this study. These teeth were split in the center of carious lesion, in order to obtain two corresponding half. Thus 30 samples were prepared in...

INTRODUCTION Thermal changes can occur on the external root surface when root-end cavity preparation is performed, which may damage periodontal ligament cells and alveolar bone. OBJECTIVE The purpose of this study was to evaluate the temperature changes during preparation of the root-end cavities at 1 and 3 mm to the sectioned apical root surfaces when either tungsten carbide round bur, diamo...

Objective: Zirconia is increasingly being used in restorative dentistry but its removal is often a difficult procedure due to its resistance to cutting with conventional diamond burs. Zirconia cutting burs have been developed and this study aims to compare 4 such burs. Methods: 35 experienced restorative dentists selected from our Practice Based Network (PBN) were asked to evaluate the cutting ...

Highand low-speed rotary dental handpieces have been used for a long time in restorative dentistry for cavity preparation. However, problems inherent to conventional burs, such as noise, heat and vibration, have led to the development of new dental burs, such as the chemical vapor deposition diamond-coated bur. Its advantages are many, such as less noise, less pain for the patient, precise cutt...

The aim of this study is to examine the effect of different finishing and polishing systems on the surface roughness, microhardness and microleakage of a nano-hybrid composite. The effect of four different finishing and polishing systems (Mylar-strip, Diamond finishing bur, Sof-lex disc, PoGo) were evaluated on a nanohybrid composite (Ceram-X mono, Denstply). The surface roughness was measured ...

AIM This in vitro study aimed to compare the time required for removal, the presence of residues of restorative material, tooth structure loss and dental surface morphology after removal of composite resin and amalgam restorations from occlusal cavities in primary molars using conventional high-speed bur and CVDentus® ultrasonic diamond tips. MATERIALS AND METHODS A total of 37 primary molars...

Background: Diamond burs are recommended for grinding enamel and they are available in different grid sizes, therefore the aim of this study was to evaluate the effect of beveling with 4 different grid size diamond fissure bur s on shear bond strength of light cured composite resin. Materials and Methods: Forty extracted anterior teeth were sectioned at the level of cervical line. The crowns we...

Background and Aims: Restoration of non-carious cervical lesions (NCCLs) is challenging due to the difficulty of adhesion of dental tissues. The aim of this study was to investigate the effects of three methods of surface treatments using diamond bur, Er: YAG laser and sandblasting on the microtensile bond strength of resin composite to the noncarious dentin in cervical lesions. Materials and ...