Last week, our community engaged in vibrant discussions on new materials and techniques reshaping the dental technology landscape. Members shared insights on cutting-edge metals improving orthodontic appliances, and debated challenges with 98mm pucks in milling procedures. There was a strong focus on continuing education’s role in reducing remake rates and practical tips for common equipment issues, like managing handpiece runout. Color consistency in lab work was also a hot topic, with members sharing experiences and solutions.
This Week’s Hot Topics
The metal that made braces gentler
This discussion covers recent advancements in metal alloys that are making orthodontic treatment more comfortable for patients. It’s a fascinating look at how small changes can have a big impact on patient experience. Read more here
When the 98mm puck fights back
A practical thread addressing the challenges faced when milling with 98mm pucks, offering tips and tricks from experienced technicians to overcome these hurdles. Read more here
CE that actually improves remake rates
This conversation delves into the continuing education programs that effectively reduce remake rates, highlighting what works and why it’s worth investing in. Read more here
Quarter-turn math on expansion screws
A technical discussion focused on the precise calculations involved in using expansion screws, perfect for those who appreciate the finer details of our craft. Read more here
Handpiece runout killing my margins
Explore solutions to a common yet frustrating issue: handpiece runout. Contributors are sharing their experiences and fixes that save time and improve outcomes. Read more here
A2 in the lab, A3 on the sidewalk
Color consistency is key, and this thread tackles the challenges of managing shade discrepancies between lab work and real-world applications. Read more here
Looking forward to another week of engaging discussions and shared expertise. Thanks for being an active part of our community.
Had the 98mm puck fight back too — clamp deflection was the culprit; backing off to 6 N·m and adding a 1 mm spacer ring stopped chatter on pre‑sintered zirconia. For shade drift, @ErinC, we swapped to 5500K task lights and a 30‑second outdoor check before glazing, and remakes fell about 8%. Caveat: don’t loosen the clamp on CoCr — slow the step‑over and pop in a fresh 2 mm rougher.
@nolan_j92 I chased ‘puck fights’ for weeks and it ended up being collet runout — new ER11 collet and a thorough clean of the spindle taper dropped TIR to about 3 microns and the rim chatter disappeared; just re-probe tool lengths after the swap.
On my DWX‑52D, “98mm pucks” chattered most when the colored zirconia wasn’t fully dry; a 20–30 min pre‑dry at about 60°C before milling cut the squeal and eliminated minor shade drift. Just don’t overbake — stick to the vendor’s pre‑dry window or you’ll embrittle the rim.
Quick example: on a vhf K5+, the chatter with 98 mm zirconia discs was mostly vacuum resonance — dropping suction to about 60% for roughing and adding a 5° helical ramp entry stopped it; “if it screams, change the stream” became my rule. If you don’t have variable suction, crack the gate a bit, but bump it back up for PMMA to avoid a mess. Curious if @marta_cadcam has tried tweaking ramp angle instead of torque when it starts singing.