Question

Explain anterior tooth preparation in fized partial dentutes

Answer 1

Burs and phases of the novel technique.

Bur N°1: diamond-coated depth marker of one millimetre with a spherical and flat stopping surface;

Bur N°2: diamond-coated depth marker of two millimetre with a spherical and angulate stopping surface;

Bur N°3: cylindrical diamond of one millimetre with no diamond head;

Bur ANT: soccer diamond bur. it's the sole one standard bur of the kit;

Bur N°4: cylindrical bur with the sole a pair of final millimetre diamond-coated;

Bur N°5: frustum diamond bur with no diamond head.

The innovation of this method is that the easier management of depth and direction of the removing procedures. Indeed, thanks to flat and no diamond-coated stopping surfaces, the tooth doctor will dominate easier the bur throughout tooth reduction. each bur tracks a guide for the subsequent one. There ar less variables to contemplate, that the error-probability is lower.

The technique consists in four phases

First phase: axial and occlusal reduction depths-

Anterior teeth: 2 or 3 grooves ar completed on the incisal surface with the N° a pair of bur.

Second phase: reduction-

Anterior teeth: the tooth incisal reduction is formed between the grooves with the N° three bur.

Third phase: finish preparation-

The N° four bur is employed to arrange the finish. the sleek proximal portion of the bur permits to use the axial surfaces of the forged to guide the tooth doctor within the preparation

Fourth phase: tooth surface processing.-

The N° five bur refines the tooth surface. it's wont to around the line angle of the stump and eliminates any undercut