CAD/CAM - international magazine of digital dentistry

12 I I industry report _ guided surgery _coPeriodontiX (Straumann)isthefirstsoftware toofferthe3-Devaluationofperiodontalbonestatus using cross-sectional CBCT image data. The aim is themeasurementofboneprogressionpriorto,during, andaftertreatment,aswellasmonitoringtomeasure the effectiveness of regenerative treatment. X-ray images have always proven a valuable tool in perio- dontal diagnostics.1, 2 Usually 2-D imaging processes, such as bitewing images, intra-oral images of single teeth, or panoramic tomograms, are used for this purpose.Alltheseprocessesareabletoprovideimpor- tantdiagnosticpointers,butnoneofthemarewithout fundamental limitations,3 even at a high quality. It is against this background that cone-beam computed tomography(CBCT)hasgainedincreasingimportance over the past few years and is now firmly entrenched incertainareasofmoderndentistry.4,5Intoday’sperio- dontology,CBCTallowsforpreciseanswerstoanum- ber of diagnostic issues relating to structural bone changes in the dentoalveolar area.12 High-resolution and overlap-free imaging of teeth and bone struc- tures, as well as their pathological deterioration, play amajorroleindiagnostics.6,8–10 _Principle of radiological bone measurement As there have been no satisfactory software-based solutions existed to date for standardized use in the parodontological evaluation of cross-sectional data (obtained using CBCT or CT), software was developed in collaboration with Straumann under the name of coPeriodontiXandisnowpresentedforthefirsttimein itscurrentversion(8.0)fordailyclinicaluse.Theprinciple of standardised evaluation follows the X-ray six-point measuringprincipleinanalogytoclinicalassessment.By positioningadigital3-Dcoordinatesystemcentrallyon the tooth to be measured, the software automatically generates transverse cross-sections of the tooth (Figs. 1a&b).Usingsettable,definedlandmarks,thedistance CAD/CAM 2_2013 Straumann’s coPeriodontiX: 3-D digital bone measurement using cross-sectional CBCT image data in periodontal issues Authors_Drs Jonathan Fleiner, Andres Stricker & Dirk Schulze, Germany Fig. 1a Fig. 1b Fig. 2a Fig. 2b