7 Chandler Bone Chisel 4.7 mm, Bi-Bevel Tooth Splitting Chisel

The 7 Chandler Bone Chisel is a bi-bevel tooth-splitting instrument, belonging to the subgroup within the Chandler family that is designed for tooth sectioning rather than bone shaving. The distinction between the mono-bevel (#1, #2, #4) and bi-bevel (#7, #8) Chandler chisels is clinically significant: mono-bevel instruments are used against bone surfaces in a directional push stroke where the single angled face drives the blade in a specific direction; bi-bevel instruments are used against tooth structure in a splitting application where the symmetric beveled faces on both sides of the blade distribute the splitting force equally and drive the two halves of the tooth apart symmetrically.

In tooth extraction, particularly for mandibular molars fused at the furcation or with converging roots that prevent forceps delivery as a whole unit, the bi-bevel chisel is positioned at the furcation and driven apically with mallet strikes until the crown and roots begin to separate. The symmetric force distribution of the bi-bevel prevents the chisel from deflecting to one side as a mono-bevel would, which reduces the risk of inadvertent root fracture in an unintended direction. The 4.7 mm blade width fits the furcation width of most mandibular molars and provides enough blade surface area to stabilize the chisel in the furcation before the mallet stroke is applied. Medical-grade stainless steel, autoclavable.

Product Features

• Chandler bone chisel 7 bi-bevel 4.7 mm blade distributes splitting force symmetrically for controlled tooth sectioning without blade deflection
• Suited to molar furcation sectioning where symmetric root separation is preferred over directional wedging
• Narrower than the #8 at 4.7 mm — for furcations of moderate width or where a narrower initial entry cut is preferred
• Mallet-compatible handle for driven tooth splitting in dense tooth structure
• Medical-grade stainless steel, corrosion resistant, fully autoclavable

#7 vs #8 (both bi-bevel): The #7 at 4.7 mm is the narrower tooth-splitting instrument, suited to molars with a smaller furcation diameter or where a narrower initial sectioning cut is preferred. The #8 at 6.1 mm provides a wider splitting blade for larger-diameter teeth and roots. Both are bi-bevel.