Clinical experience, misunderstood concepts and frequently asked questions. Notes from many years of practice.
Spark is made by Ormco, part of Envista; Invisalign by Align Technology. No published clinical trial compares the two. Laboratory studies of staining give mixed results, and case complexity decides the fee.
ClearCorrect belongs to the Straumann Group, Invisalign to Align Technology. No clinical trial compares them; laboratory studies differ on staining, and flat trimlines deliver more force than scalloped ones.
Angelalign reported about 532,400 cases for 2025, Align 2,611.3 thousand. One cohort of 29 extraction patients compares the two materials directly; the rest of the evidence is laboratory work.
Invisalign has a large clinical record; SureSmile aligners have one accuracy study of 14 patients, and no trial compares the two. Much of SureSmile's reputation comes from its archwire system, a different appliance.
An in vitro test of aligners from 5 companies, K Line among them, found statistically meaningful colour change after tea, coffee and spice exposure. No published study compares its tooth movement with Invisalign; what that means before you choose.
Nuvola is an Italian clear aligner made by G.E.O. S.r.l. near Rome. No published clinical study compares it with Invisalign; this guide sets out what is registered, what is published and what to ask.
Dental implant treatment usually runs in six stages, from CBCT to crown fitting; surgery for one implant takes about 40 minutes, healing sets the timetable.
After impacted wisdom tooth removal, swelling is most often reported on the first two days and has usually eased markedly by day five.
All-on-4 and All-on-6 both support a fixed full-arch implant bridge. The right choice depends on bone volume and position, bite forces, prosthetic design, health risks and long-term maintenance, not on implant count alone.
