In vitro rapid intraoral adjustment of porcelain prostheses using a high-speed dental handpiece

A Machining Science Approach to Dental Cutting of Glass Ceramics Using an Electric Handpiece and Diamond Burs

“…6). This agrees with the previous findings in dental cutting of bioceramics using airturbine handpieces and coarse burs [6,9,28], in which surface roughness usually did not depend on the removal rate using coarse diamond burs.…”

Induced damage zone in micro-fine dental finishing of a feldspathic porcelain

“…Especially, clinical delivery of restorations often involves adjustments to internal and occlusal surfaces by rotary diamond burs used in high-speed handpieces [10,11]. Coarse abrasive burs are used for bulk material removal processes, where the objective is to remove materials as efficiently as possible with little regard for surface quality [11,12]. Our previous research reported that subsurface damage depths in the feldspathic porcelain using coarse dental burs were in the range 23-80 m [13].…”

Cracking of Porcelain Surfaces Arising from Abrasive Grinding with a Dental Air Turbine

“…Abrasive grinding using diamond burs in a dental air turbine is one method available for making such adjustments; however, the effects of this type of adjustment on all‐ceramic restorations are not yet fully understood. Previous researchers have demonstrated that surface and subsurface damage can arise from diamond bur machining of ceramic under simulated dental operatory conditions 1–4 . To date, most of this damage has been characterized in terms of the mode of machining damage, specifically the brittle and ductile modes of material removal 5 …”

“…Previous researchers have demonstrated that surface and subsurface damage can arise from diamond bur machining of ceramic under simulated dental operatory conditions. [1][2][3][4] To date, most of this damage has been characterized in terms of the mode of machining damage, specifically the brittle and ductile modes of material removal. 5 Ceramics, with their low-thermal conductivity and inherent brittleness, are known to be susceptible to thermal shock damage.…”