Australasian Dentist Issue 92

CATEGORY 86 AUSTRALASIAN DENTIST The benefits of the digital workflow according to Dr Chang u The Smile Design module is quick and intuitive, allowing for the patient to already see ‘results’ at the very first consultation. This was beneficial with case acceptance. u The most recent version of the Smile Design module now allows for smile design to be carried out in the lower teeth. u The digital workflow enabled multiple scans to be sent to the technician easily and quickly, including the pre-operative situation, the patient approved temporaries, and the actual tooth preparations themselves. u The digital images of the smile design and the digital models are all able to be virtually super-imposed and cross-arch mounted, which enables the technician to accurately design the final restorations to the dentist’s prescription u The accuracy of the TRIOS ensured a perfect fit of the restorations, with no or minimal adjustments during delivery. Discussion The digital workflow has significant advantages over the traditional analogue workflow, in that many processes are now quick and efficient. The ability to show the patient a photo-realistic rendering of the proposed final outcome at the very first consultation is invaluable for case acceptance. Being able to import the smile design simulation into the CAD design software also ensures that the initial design can be accurately copied. The entire case is then able to be completed with a clearly defined endpoint, leading to no surprises for the dentist or the patient. u About Dr Chee Chang Dr Chee Chang trained at the University of Otago (NZ) graduating in 1999. He then joined Wellington Hospital In the capital city of Wellington, New Zealand and worked as a dental house surgeon where he further developed his skills in oral surgery and management of complex medically compromised patients. Following this, commenced work in private practice in Auckland, and would later relocate to the UK where he worked in Somerset county and in London. Chee completed a postgraduate diploma from the Royal College of Surgeons (UK) in 2006 in advanced general dentistry. He later returned to New Zealand to undertake specialist training, finishing in 2009. During this time, Chee completed his research thesis on dental ceramics, and has published in the Journal of Prosthodontics. He has maintained teaching positions at both the University of Sydney and Melbourne University. Chee lectures regularly to dental students, dentists and other dental specialists on all aspects related to prosthodontics and implant dentistry. He is a frequently invited speaker at conferences, both in Australia and overseas, and is a key opinion leader for a number of dental companies. Figure 7 – 3D printed model of the digital wax-up, based off the smile design Figure 8 – Upper teeth prepared and retracted ready for scanning Figure 9 – Lower teeth prepared and retracted. Figure 10 – Intraoral scan of preparations Figure 11 – Provisional veneers were made from the diagnostic model Figure 12 – Patient approved temporaries scanned and imported into 3Shape Dental System Figure 13 – Upper veneers on 3D-printed model Figure 14 – Lower veneers on 3D-printed model. Figure 15 – Veneers in situ Figure 16 – View of lower veneers, showing a very close match to the initial simulation Figure 17 – Final smile LINICAL