CAD/CAM Sponsored by Dentsply Sirona CEREC
What thickness is best for single-molar crowns?
September 21, 2017 -- If you use ceramic materials to fabricate single-molar CAD/CAM crowns, how do you determine which will hold up best? Researchers put six silicate ceramic materials through testing at three thicknesses to find out which could handle the highest fractural loading. The results might change which material you use.  Discuss
Hot or not? 5-year results for ceramic implant-supported crowns
CE
July 13, 2017 -- CAD/CAM-fabricated implant-supported single crowns made from lithium disilicate and paired with zirconia implants have proved to be successful in clinical studies. But how well do they hold up over the longer term and compare with other options? A new study reports results over a five-year follow-up period.
 Discuss
Study measures displacement of zirconia crowns into implants
CE
May 25, 2017 -- When you are tightening CAD/CAM-fabricated zirconia single-implant crown into an internal conical seal implant-abutment connection, you know there is going to be some displacement, but how much? The researchers of a new study measured this displacement and also asked if it's enough to affect the proximal contacts and occlusion of the prosthesis.
 Discuss
Study tests particle-filled resins for partial crowns
May 4, 2017 -- What materials do you use for single-tooth, partial-crown restorations? Particle-filled composite resin CAD/CAM materials are a promising addition to practitioner's toolbox, but do they hold up over time? Researchers tested 42 partial-crown restorations over two years to see how well these restorations performed.  Discuss
New product: Komet adds crown cutter
April 24, 2017 -- Komet USA has introduced a new crown cutter to aid in removing adhesive-bonded, ceramic restorations.  Discuss
Case report: Using a laser to lengthen an open crown
February 24, 2017 -- In this case, a 73-year-old woman needed to decide between an implant that would replace tooth #4 or a fixed partial bridge for teeth #3 and #5 with a pontic #4. The patient's general dentist used a laser for the procedure rather than a scalpel and handpiece with burs, reducing the treatment time, as Dr. Joshua Weintraub describes in this report.  Discuss
Study measures time for in-office crown fabrication versus labs
January 26, 2017 -- One question any office considering the purchase of a CAD/CAM system must ask is how much time will be saved during crown fabrication versus the traditional process. The more time an office can save, the more procedures it can schedule. Now, researchers have attempted to measure how long each process takes.  Discuss
Legal Cases: TMJ dysfunction following crown and bridge work
August 16, 2016 -- A 63-year-old man with many fillings, previous endodontic treatment, and three-unit bridges presented to his dentist with headaches, tight jaw muscles, and teeth grinding. As William S. Spiegel and Dr. Marc R. Leffler document, sometimes practicing to the dentist's ability is the best course of action for all involved.  Discuss
Study: Can lithium silicate ceramic crowns hold up?
July 14, 2016 -- Lithium silicate ceramic has many advantages for aesthetic and minimally invasive restorations. But what factors influence the success or failure of these crowns over five years? Researchers from Germany studied more than 300 of these crowns and found certain advantages -- and cautions.  Discuss
Case report: Simple and efficient crown removal, extraction, and graft techniques -- Part 2
June 2, 2016 -- Dr. Timothy Kosinski illustrates techniques that can make crown removal, extraction, and grafting more reliable and efficient. In part two of his series, he discusses extractions and graft options.  Discuss
Special Feature
Study tests particle-filled resins for partial crowns

What materials do you use for single-tooth, partial-crown restorations? Particle-filled composite resin CAD/CAM materials are a promising addition to practitioner's toolbox, but do they hold up over time? Researchers tested 42 partial-crown restorations over two years to see how well these restorations performed. Read more.