ENDO : RCT : Access Cavity Preparation

Burs :

For initial entrance : Round-end carbide fissure bur/ diamond stone bur.

                                   (Extra-Coarse, dome-ended cylinder bur for cutting through non-precious metals.)

                                   (Small diamond bur, for porcelain jacket crown)

For dentin removal & drop into pulp chamber : Round bur (regular-length = 9mm; surgical-length bur = 14-15 mm)

(No. 2 = Maxillary PreMolar & Mandibular Anterior,

No. 4 = Maxillary Anterior & Mandibular Posterior,

No. 6 = Molars with large pulp chambers) 

Endodontics - 4th Edition : Ingle, Bakland.