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Technical details

Index

Electrometric length determination

Modern electrometric devices measure through several impedances the physiological length of a root canal based on the dentine resistance. The foramen physiologicum serves as the end point. Electrometric devices allow for an exact length determination of the foramen in 85-90% of all teeth examined (± 0,5mm), whereas radiographic length determination only provides for exact results in 60% of cases.

Nickel-titanium instruments

For rotary root canal preparation we use mainly Mtwo instruments which can be combined with GT, FlexMaster or profile instruments in case of need. The smallest apical diameter of the physiological foramen is manually gauged with light speed instruments. Stainless steel hand instruments are primarily used for accessing the finest root canals as well as for creating a glide path as a basis for rotary root canal preparation.

Vertical compaction

Warm vertical compaction enables gutta-percha to flow homogenously even in narrow canal ramifications and caverns. Apical canal portions in particular, including their ramifications, can thus be filled to a large extent. For this purpose, gutta-percha is either heated within the canal via heat carriers to reach a flowing temperature or it is heated in a gutta-percha pistol-type delivery device to be directly injected into the canal system at perfect flowing temperature.

Irrigation protocol

Folgendes Spülprotokoll wird derzeit angewendet:

For vital extirpation

During preparation: NaOCL solution at a concentration of 3%, heated to a temperature of 55°C

Final step:

  • 30 second ultra-sound treatment of each canal with non-cutting tips
  • NaOCL solution at a concentration of 3%, heated to a temperature of 55°C
  • Application of CaOH or root canal filling

For retreatment / nectrotic-infected pulp

During preparation: NaOCL solution at a concentration of 3%, heated to a temperature of 55°C

Final step:

  • EDTA at a concentration of 17 % to remove smear layer
  • NaOCL solution at a concentration of 3%, heated to a temperature of 55°C
  • 30 second ultra-sound treatment of each canal with non-cutting instruments
  • NaOCL solution at a concentration of 3%, heated to a temperature of 55°C
  • Application of medicinal substance / root canal filling